УСТРОЙСТВО УПРАВЛЕНИЯ ВЕКТОРОМ АСИНХРОННОГО ДВИГАТЕЛЯ, СПОСОБ УПРАВЛЕНИЯ ВЕКТОРОМ АСИНХРОННОГО ДВИГАТЕЛЯ И УСТРОЙСТВО УПРАВЛЕНИЯ ПРИВОДОМ АСИНХРОННОГО ДВИГАТЕЛЯ

Изобретение относится к области электротехники и может быть использовано для управления асинхронным электроприводом, используемым на транспорте. Техническим результатом является обеспечение стабильного управления вектором во всем диапазоне от низких до высоких скоростей работы асинхронного двигателя в отсутствие контура обратной связи. Устройство управления вектором включает в себя средство (40) расчета команды вторичного магнитного потока асинхронного двигателя (6) с учетом максимального напряжения, которое может генерировать обратный преобразователь (4), на основе команды крутящего момента, поступающей извне, постоянного напряжения, подаваемого в обратный преобразователь (4), и угловой частоты обратного преобразователя (4), которая представляет собой угловую частоту переменного напряжения, выводимого обратным преобразователем (4); средство (8) и (9) генерирования команды тока оси q и команды тока оси d во вращающейся системе координат осей d-q, относительно вторичного магнитного потока ...

СИСТЕМА ЭЛЕКТРОПРИВОДА

Изобретение относится к области электротехники и может быть использовано для управления электродвигателями переменного тока. Техническим результатом является возможность потребления избыточной мощности при выполнении следящего управления крутящим моментом без создания нестабильности в управлении электродвигателем. В системе привода электродвигателя переменного тока, величина тока которого контролируется по методу обратной связи, команда по току производится в процессе нормальной работы в соответствии со значением команды крутящего момента на характеристической линии оптимального КПД (CL0), чтобы выбрать оптимальную фазу тока, максимизирующую выходной крутящий момент при постоянной амплитуде тока электродвигателя. Напротив, если электродвигатель переменного тока производит чрезмерное количество генерируемой мощности, превосходящее величину, способную к рекуперации мощности в электродвигателе переменного тока, выполняется режим потребления для специального увеличения потери мощности в электродвигателе ...

СПОСОБ УПРАВЛЕНИЯ ЭЛЕКТРИЧЕСКОЙ МОЩНОСТЬЮ И УСТРОЙСТВО УПРАВЛЕНИЯ ЭЛЕКТРИЧЕСКОЙ МОЩНОСТЬЮ

Изобретение относится к области электротехники и может быть использовано в устройствах управления электрической мощностью в трехфазных двигателях переменного тока. Техническим результатом является повышение точности управления. Способ управления электрической мощностью, содержащий: этап измерения тока; этап вычисления предписанного значения; этап функционирования; этап определения, на котором определяют, изменять ли период работы, в течение которого осуществляется этап функционирования, чтобы он был длиннее одного цикла несущей волны; первый этап подавления, на котором подавляют операцию переключения переключающих элементов в первом полуцикле несущей волны, начиная с начального момента времени периода работы после изменения, в течение которого несущая волна монотонно изменяется; этап сравнения, на котором изменяют наклон несущей волны в течение промежуточного периода между первым полуциклом несущей волны и последним полуциклом несущей волны в течение периода работы после изменения для сравнения ...

СИЛОВОЕ ПРЕОБРАЗОВАТЕЛЬНОЕ УСТРОЙСТВО

... 1. Силовое преобразовательное устройство, содержащее: ! первый силовой преобразователь (2), который получает напряжение постоянного тока от источника питания (1); ! конденсатор (3), который подключен к выходной стороне первого силового преобразователя (2); ! второй силовой преобразователь (4), который преобразует напряжение постоянного тока конденсатора (3) в напряжение переменного тока и выводит напряжение переменного тока на синхронную машину (5); ! средство (6) детектирования информации о вращении, которое детектирует информацию о вращении синхронной машины (5); и ! средство (7) управления, которое управляет первым силовым преобразователем (2) и вторым силовым преобразователем (4) на основе информации о вращении, детектированной средством (6) детектирования информации о вращении, при этом ! на основе информации о вращении синхронной машины (5), детектированной средством (6) детектирования информации о вращении, средство (7) управления управляет вторым силовым преобразователем (4), таким ...

Steuerungssystem für eine rotierende elektrische Maschine

Ein Steuerungssystem (100) für eine rotierende elektrische Maschine, dessen Steuerungsziel eine rotierende elektrische Wechselstrommaschine (80) mit M Spulensätzen (8) ist, umfasst M Wechselrichter (50), die jeweils eine Vielzahl von Schaltelementen (5) enthalten und mit einer Gleichstromenergieversorgung (41) und einem der Spulensätze (8) verbunden sind, um elektrische Energie zwischen einem Gleichstrom und Wechselströmen von N Phasen umzuwandeln; M Stromsensoren (6), die jeweils für jeden Spulensatz (8) bereitgestellt sind, um einen Wechselstrom jeder Phase zu erfassen, der durch den Spulensatz (8) fließt; und eine Wechselrichtersteuerungsvorrichtung (30), die Schaltsteuersignale (S) zur Steuerung der Vielzahl von Schaltelementen (5) erzeugt. Die Wechselrichtersteuerungsvorrichtung (30) führt eine Stromrückkopplungssteuerung der rotierenden elektrischen Maschine (80) unter Verwendung aller von den M Stromsensoren (6) erhaltenen Erfassungswerte für jede der N Phasen durch, um die den M ...

Sensorstörungsdetektionsverfahren, Motortreibersystem und elektrisches Servolenksystem

Ein Sensorausfalldetektionsverfahren ist ein Verfahren zum Detektieren eines Ausfalls einer Mehrzahl von Sensoren in einem Motortreibersystem, wobei das Verfahren Folgendes aufweist: einen Schritt des Durchführens einer Berechnung (A) zum Bestimmen eines Gegen-EMK-Fehlers Ver unter Verwendung eines festen aß-Koordinatensystems oder eines dq-Drehkoordinatensystems zu Referenzzwecken, wobei bei diesem Schritt die Berechnung (A) auf der Basis von Strömen Iα und Iβ auf den αβ-Achsen des festen aß-Koordinatensystems, von Referenzspannungen Vα* und Vβ* auf den aß-Achsen und eines elektrischen Winkels θeines Rotors durchgeführt wird und der Gegen-EMK-Fehler Ver als Funktion des Fehlers zwischen einem geschätzten Phasenwinkel ρund einem gemessenen Phasenwinkel p auf der Basis der unter Verwendung einer Mehrzahl der Sensoren gemessenen Sensorwerte ausgedrückt wird; und einen Schritt des Detektierens eines Ausfalls auf der Basis des Gegen-EMK-Fehlers Ver.

MOTORSTEUERVORRICHTUNG UND BREMSSTEUERVORRICHTUNG

Es werden eine Motorsteuervorrichtung, welche die Rotorposition auf der Grundlage eines Neutralpunktpotentials selbst dann genau schätzen kann, wenn die Last zunimmt, und eine Bremssteuervorrichtung, die von der Motorsteuervorrichtung angesteuert wird, offenbart. Die Motorsteuervorrichtung 3 weist einen Dreiphasen-Synchronmotor 4 auf, der eine Dreiphasenwicklung, einen Umrichter 31, der mit der Dreiphasenwicklung verbunden ist, eine Steuereinheit 6 zum Steuern des Umrichters auf der Grundlage der Rotorposition des Dreiphasen-Synchronmotors und eine Drehpositions-Schätzeinheit 2 zum Schätzen der Rotorposition θd auf der Grundlage des Neutralpunktpotentials Vn der Dreiphasenwicklung aufweist. Die Drehpositions-Schätzeinheit schätzt die Rotorposition selektiv unter Verwendung eines oder mehrerer erfasster Werte des Neutralpunktpotentials entsprechend einem vorab geschätzten Wert der Rotorposition und dem Zustand des Anlegens einer Spannung an die Dreiphasenwicklung.

Transformation angle detector for electric machine with stator and rotor with transformation of currents and voltages from one system into another and vice versa, with sensor for detecting speed and rotor angle

Electric machine (20) contains stator (21) and rotor (25) and carries out transformation of currents and voltages from d,q system into R-S-T system and vice versa. Sensor (1) detects speed and angle (psi 1,0) of rotor position .Sensor is in form of reluctance resolver and is located in housing of machine. It comprises part (4), fixed in housing, and mobile part (3) on machine shaft (2) for detecting rotor position angle. Preferably fixed sensor part contains two secondary coils (5) and one excitation coil (7).

Verfahren und Vorrichtung zur Regelung einer dynamoelektrischen Maschine

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur feldorientierten Stromregelung einer mehrphasigen dynamoelektrischen Maschine (1) mit einem Stator und einem über einen Luftspalt hiervon beabstandeten Läufer. Um das dynamische und akustische Verhalten der Maschine (1) zu verbessern, werden folgende Verfahrensschritte vorgeschlagen:i. Transformation von Phasenströmen der Maschine aus einem statorbezogenen mehrphasigen Koordinatensystem (13) in einen Grundschwingungsstromvektor in einem mit einer Grundschwingungsfrequenz rotierenden zweiachsigen ersten d/q-Koordinatensystem (14),ii. Transformation von Oberschwingungsanteilen der Phasenströme der Maschine aus dem statorbezogenen mehrphasigen Koordinatensystem (13) in zumindest einen Oberschwingungsstromvektor (16) in einem zweiachsigen zweiten d/q-Koordinatensystem (15), das mit einer Oberschwingungsfrequenz der Grundschwingungsfrequenz rotiert,iii. Bestimmung eines ersten Stellgrößenvektors auf Basis einer ersten Regelabweichung ...

DIAGNOSEGERÄT

Diagnosegerät für ein System, wobei das System eine rotierende elektrische Maschine (30), die eine Ankerwicklung (35U bis 35W) und eine Feldwicklung (32) aufweist, eine Ankerspeisungsschaltung (51), die angetrieben wird, um einen Ankerstrom der Ankerwicklung zuzuführen, und eine Feldspeisungsschaltung (52) aufweist, die angetrieben wird, um einen Feldstrom der Feldwicklung zuzuführen, wobeiein feldseitiger Schwellwert, der ein Schwellwert für den Feldstrom ist, und ein ankerseitiger Schwellwert, der ein Schwellwert für den Ankerstrom ist, als eine Kombination des Feldstroms und des Ankerstroms eingestellt sind, bei denen ein erzeugtes Drehmoment der rotierenden elektrischen Maschine gleich wie oder kleiner als ein Drehmomentschwellwert ist, unddas Diagnosegerät aufweist:eine Antriebseinheit (87 bis 89), die die Ankerspeisungsschaltung und/oder die Feldspeisungsschaltung antreibt, undeine Diagnoseeinheit (90), die einen feldseitigen Diagnoseprozess und/oder einen ankerseitigen Diagnoseprozess ...

Verfahren zur indirekten feldorientierten Steuerung eines Drehstrom-Asynchronmotors

Verfahren und System zur Ausrichtung eines Resolvers in einem Elektromotorsystem

Verfahren zum Ausrichten eines Resolvers, wobei der Resolver zum Bestimmen einer Rotorposition in einem Elektromotor bezüglich einer d-Achse dient, wobei das Verfahren die Schritte umfasst: Befehlen eines d-Achsen-Strombefehls und eines Geschwindigkeitsbefehls; Betreiben des Elektromotors ohne eine Last in Ansprechen auf den d-Achsen-Strombefehl und den Geschwindigkeitsbefehl; Bestimmen einer Rotorgeschwindigkeit in Ansprechen auf den Geschwindigkeitsbefehl; und Bestimmen eines Versatzes des Resolvers auf der Grundlage des Geschwindigkeitsbefehls und der Rotorgeschwindigkeit, wenn sich die Rotorgeschwindigkeit im Wesentlichen stabilisiert hat.

Variable torque angle for electric motor

A method for controlling an electric motor 2 in which the torque angle in the d-q-reference frame is at least in part and/or at least at times varied depending on at least one working condition of the electric motor. The working condition may be derived from a design and/or an operation parameter of the motor, particularly an electric and/or mechanical parameter e.g. torque, inductance, applied current, saturation effect. The working condition may be derived from the direct quadrature reference frame. A controller unit 5 may be provided having a programmable memory device 6 and an inverter unit 6. The motor may be a synchronous reluctance electric motor.

REGULAR ELECTRIC MOTOR ARRANGEMENT FOR A STRUTTING MECHANISM

VERFAHREN ZUR DREHZAHLREGELUNG EINES PERMANENTMAGNETMOTORS

PROCEDURE FOR THE SPEED REGULATION OF A PERMANENT MAGNET ENGINE

Verfahren zur Regelung des Drehmoments einer Asynchronmaschine

Die gegenständliche Erfindung beschreibt ein Verfahren zur Steuerung des Drehmoments der Asynchronmaschine im statorfesten Koordinatensystem, ohne ein bekanntes auf einem Spannungs- und Strommodell basierendes Flussmodell verwenden zu müssen. Dies wird dadurch erreicht, indem in statorfesten Koordinaten (a,ß) ausgehend vom aktuellen Rotorfluss ( R(n)) und Statorfluss ( S(n)) der im nächsten Abtastschritt (n+1) auszuführende Statorflussschritt (d S(n + 1)) zur Erreichung eines Soll-Drehmoments, sowie der Rotorfluss ( R(n + 1)) und Statorfluss ( S(n + 1)) für den nächsten Abtastschritt (n+1) berechnet werden.

Verfahren und Langstatorlinearmotor zur Übergabe einer Transporteinheit an einer Übergabeposition

In a long stator linear motor, in order to implement a transfer position in which a transport unit (Tn) is magnetically steered in order to be redirected from a first transport section (Am) to a second transport section (An) and in order that the forward movement of the transport unit (Tn) remains as unaffected as possible by the transfer, it is provided that at the transfer position (U) on at least one side of the transport unit (Tn), the stator current (iA) of at least one driving coil (7, 8) interacting with an excitation magnet (4, 5) of the transport unit (Tn) is supplied as a current vector with a propulsive force-forming current component (iAq) and a lateral force-forming current component (iAd), and the stator current (iA) generates a propulsive force-forming electromagnetic force (FEMV) and/or lateral force-forming electromagnetic force component (FEMS) which is superimposed on the propulsive force (FV) acting on the transport unit (Tn) for production of a steering effect (L).

PROCEDURE AND DEVICE FOR THE FIELD-ORIENTED REGULATION OF AN INDUCTION MACHINE

PULSE WIDTH MULTIPLE MULTIPLIER.

Integrated motor driver/controller with sensorless or sensored commutation

A motor controller configured to control different types of electronically commutated motors (ECMs) includes a range of different rotor orientation signal inputs to accommodate differences between ECM motor types. The motor controller includes a control unit that receives motor operation commands and controls operation of the ECM in accordance with the motor operation commands. The control unit receives and stores data designating ECM type and estimates rotor position based on the designated ECM type.

Method and system for constant temperature control of motorized spindles

The present invention provides a method and system for controlling the temperature of an electric motor by adjusting the electric losses in the motor. In an embodiment, the required load on the motor is determined and a first motor voltage is provided to meet the required load. A predetermined temperature set point for the motor is compared against the temperature of the motor and based on the temperature of the motor and the predetermined temperature set point, a secondary motor voltage is determined. The motor voltage may then be adjusted based on the calculated voltage and the motor load measurement adjusted based on the measured motor speed and actual motor voltage.

APPARATUS FOR THE CONTROL OF A SALIENT-POLE MACHINE

VOLTAGE-CONTROLLED FIELD-ORIENTED INDUCTION MOTOR CONTROL SYSTEM

An induction motor drive control system is controlled according to a torque demand and a rotor flux amplitude demand while using only a shaft position feedback and providing an open loop equivalent of a vector voltage control approach to the control of the induction motor.

UNIVERSAL FIELD-ORIENTED CONTROLLER

RD-19,551 UNIVERSAL FIELD-ORIENTED CONTROLLER A universal field-oriented controller (UFO) for an induction machine drive is capable of decoupling flux and torque in an arbitrary flux reference frame. Transitions between reference frames, including rotor flux, stator flux and air gap flux, are made by changing the effective stator-to-rotor turns ratio. The UFO is capable of operating in a direct field-orientation mode and an indirect field-orientation mode without requiring additional hardware or software.

VECTOR CONTROL DEVICE OF INDUCTION MOTOR, VECTOR CONTROL METHOD OF INDUCTION MOTOR, AND DRIVE CONTROL DEVICE OF INDUCTION MOTOR

Stability of vector control in an induction motor is important. An inverter is used, and it is essential that stable vector control be maintained over the entire output range of the inverter. One technique is to use feedback to adjust the inverter output voltage to match the maximum voltage that the inverter can actually output. However, this can cause a discrepancy between the inverter output voltage command and the output voltage of the inverter until the output voltage of the inverter is corrected, leading to problems in stable vector control. The invention allows performance of stable vector control over the entire range of the induction motor by generating the secondary magnetic flux command to the induction motor in a feed forward manner, independently of the output voltage saturation state of the inverter.

VARIABLE-FLUX MOTOR DRIVE SYSTEM

The present invention provides a variable-flux motor drive system including a permanent-magnet motor 4 having a permanent magnet, an inverter 1 to drive the permanent-magnet motor, and a magnetize means to pass a magnetizing current for controlling the flux of the permanent magnet. The permanent magnet is a variable magnet whose flux density is variable depending on a magnetizing current from the inverter 1. The magnetize means passes a magnetizing current that is over a magnetization saturation zone of magnetic material of the variable magnet. This system improves a flux repeatability of the variable magnet 53 and a torque accuracy.

VECTOR CONTROLLER OF PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR

In a method for controlling a current command value by comparing a voltag e with a set value, it is required to vary the set value depending on voltag e variation and thereby complicated control is required. The vector controll er of a permanent magnet synchronous motor comprises a section for correctin g a current command value by a current command value correction value calcul ated based on a modulation factor to thereby be able to achieve a stable flu x-weakening control in a single pulse mode in a high speed region with a sim ple arrangement.

Einrichtung zur Leistungsregelung von Drehstrommaschinen

PROCEDURE FOR THE CONTROLLING OF A SYNCHRONOUS ENGINE AND AN ELECTRIC DRIVE FOR THE EXECUTION OF THIS PROCEDURE.

Method and system for operating a vibration in an automobile

The invention relates to a method and system for operating a vibration in an automobile. The method and system for operating an automotive electric motor having first and second components is provided. A desired frequency of vibration for the electric motor is selected. A current is caused to flow through at least one of the first and second components such that the second component moves relative to the first component. The current is modulated such that the motor vibrates at the desired frequency.

Motor controller

A motor controller for an axial-gap motor (1), which has a rotor (3), two stators (4, 5) disposed on both sides of the rotor (3) in the axial direction, and armature windings (6, 7) wrapped around the stators (4, 5), includes a field current controller (43, 44) which adjusts the field current in the current supplied to the armature windings (6, 7) of at least one of the stators (4, 5) so as to restrain a thrust force acting on the rotor (3) in the axial direction of the rotor (3). This restrains the thrust force acting on the rotor (3) of the axial-gap motor (1).

Vector control apparatus for induction motor, vector control method for induction motor, and drive control apparatus for induction motor

The vector control device includes: secondary magnetic flux command computing means (40) for computing a secondary magnetic flux command to an induction motor (6) by taking a maximum voltage that an inverter (4) can generate into account on a basis of a torque command from an external, a DC voltage to be inputted into the inverter, and an inverter angular frequency, which is an angular frequency of an AC voltage to be outputted from the inverter; q-axis/d-axis current command generating means (8 and 9) for generating a q-axis current command and a d-axis current command on a d-q axes rotating coordinate system in reference to a secondary magnetic flux of the induction motor (6) on a basis of the torque command and the secondary magnetic flux command; output voltage computing means (voltage non-interference computation portion 14, adder 17, and adder 18) for computing an output voltage that the inverter (4) is to output on a basis of the q-axis current command, the d-axis current command ...

Motor control device and electric power steering device

DEVICE AND METHOD FOR ESTIMATING AND CORRECTING A MEASUREMENT ERROR OF A ROTOR POSITION SENSOR OF A ROTATING ELECTRIC MACHINE

SYSTEMS AND METHODS FOR GENERATING SYNCHRONOUS POWER.

DEVICE AND METHOD FOR ESTIMATING AND CORRECTING A MEASUREMENT ERROR OF A POSITION SENSOR OF AN ELECTRICAL ROTATING MACHINE

일차 자속 제어 방법

... 일차 자속 제어에 있어서, 토크에 따라 일차 자속 지령값을 변경함으로써 전류 위상을 적절히 제어하여, 토크에 따라 효율이 좋은 동작점에서 회전 전동기를 구동하는 기술을 제공한다. 어느 토크 T에 대해서, 일차 자속의 진폭 Λδ이 값 Λδ0(T)를 취할 때에, 전기자 전류의 진폭 ia를 최소값으로 한다. 이 때, 최대 토크/전류 제어가 가능해진다. 따라서 일차 자속 지령값의 진폭에 값 Λδ0(T)를 채용하고 일차 자속 제어를 행함으로써, 자동적으로 전기자 전류가 결정된다. 즉, 전류 위상 β가 일의적으로 결정된다. 즉, 상기 토크 T에 따른 원하는 위상에 전류 위상 β를 제어하게 되어, 토크에 따라 효율이 좋은 동작점에서 회전 전동기가 구동된다.

드라이브 시스템 및 인버터 장치

... 센서리스 제어를 안정적으로 행하는 드라이브 시스템 및 인버터 장치를 제공한다. 실시 형태의 드라이브 시스템은, 전동기(M)와, 전동기(M)를 구동하는 교류 전류를 출력하는 주 회로부(50)와, 주 회로부(50)의 출력 전류값을 검출하는 검출부(80)와, 전동기(M)에 통전하는 전류에 상당하는 전류 지령값을 생성하는 전류 지령 생성부(10)와, 전류 지령값과 전류값이 일치하도록 주 회로부(50)의 게이트 지령을 생성하는 게이트 지령 생성부(40)와, 주 회로부(50)의 출력 전압 목표 벡터를 연산하는 연산부(42)와, 주 회로부(50)가 기동할 때의 초기 추정에 있어서, 전류값과 출력 전압 목표 벡터에 기초하여, 전동기(M)의 회전 위상 추정값을 연산하는 추정부(70)를 구비한다. 초기 추정에 있어서의 전류 지령값은 전동기(M)의 회전자를 자기 포화시키는 전류를 흐르게 하는 것이며, 회전 위상 추정값의 연산에 사용하는 전동기(M)의 동적 인덕턴스는, 전동기(M)의 회전자가 자기 포화되었을 때의 값이다.

MOTOR CONTROL DEVICE AND ITS CONTROL METHOD

It is possible to provide a motor control device which can appropriately control a magnetic field and effectively perform operation even when a DC bus voltage of a power conversion circuit changes. A control method for this is also provided. The motor control device includes: current instruction calculation units (1, 2) which obtain a d-axis current instruction and a q-axis current instruction in accordance with a torque instruction; a coordinate conversion unit (9) which converts a motor current detection value into a dq-coordinate system so as to obtain a d-axis current value and a q-axis current value; a current control unit (3) which obtains a dq-axis voltage instruction so that the d-axis current value and the q-axis current value coincide with the d-axis current instruction and the q-axis current instruction; a modulation ratio calculation unit which obtains a modulation ratio according to the dq-axis voltage instruction and the DC bus voltage of the power conversion circuit; a PWM ...

MOTOR CONTROL DEVICE AND CONTROL METHOD THEREOF

It is possible to provide a motor control device which always operates with a maximum voltage and a high efficiency even when a DC bus-bar voltage of a power conversion circuit fluctuates, and a method for controlling the motor. The motor control device includes: a d-axis and q-axis current instruction calculation unit (1, 2); a d/q conversion unit (9); a current control unit (3); a modulation wave instruction calculation unit (5); and a PWM generation unit (6). The motor control device further includes: a modulation wave instruction limit unit (13) which limits a first modulation wave instruction and generates a second modulation wave instruction; a modulation ratio saturation degree calculation unit (14) which obtains a modulation ratio saturation degree from the first modulation wave instruction and the limit value from the modulation wave instruction limit unit; and a weak field control unit (4) which corrects the d-axis current instruction value in accordance with the modulation ratio ...

MOTOR CONTROL DEVICE

In order to provide a practical implementation means which reliably determines control system malfunctions with a motor control device, a motor control device is equipped with: a motor driving means that supplies motor current to a motor; a motor current detection means that detects the motor current; and a controller, to which the motor current detection value from the motor current detection means is input, and which outputs a drive signal with respect to the motor driving means. The controller is equipped with: a voltage control means that controls the voltage applied to the motor; a power supply voltage detection means; a means that restricts the maximum value (%) of the drive duty ratio of a PWM circuit to a smaller value when it is determined that a power supply voltage drop has occurred; and a malfunction detection means for determining a malfunction when the motor current value is abnormal.

METHOD OF CONTROLLING INDUCTION MOTOR

A device for controlling the torque generated by an induction motor with high accuracy comprises a rotation detector (2) for detecting the rotational speed of an induction motor ; a current detector (3) for detecting the primary current of the induction motor ; amplifier means (6a) for amplifying the difference between an estimated primary current from a flux monitor and the primary current from the current detector (3); a flux monitor (4a) for estimating the secondary flux and primary current of the induction motor (1) based on the rotational speed obtained from the rotation detector (2) and on the difference signal obtained from the amplifier means (6a); and control means (5) for controlling the voltage to be applied to the induction motor based on the estimated secondary flux obtained from the flux monitor. The amplifier means (6a) amplifies the difference of the primary current according to the feedback gain consisting of eight independent elements, allowing torque control with high ...

DEVICE AND A METHOD FOR ESTIMATING INDUCTANCES OF AN ELECTRIC MACHINE

A device for estimating inductances of an electric machine having a salient-pole rotor is presented. The device comprises a processing system that controls stator voltages to constitute a balanced multi-phase alternating voltage when the rotor is stationary. The processing system estimates a position of the rotor based on a negative sequence component of stator currents. To estimate the quadrature-axis inductance, the processing system controls direct-axis current to be direct current and quadrature-axis voltage to be alternating voltage. The quadrature-axis inductance is estimated based on the quadrature-axis alternating voltage and on quadrature-axis alternating current. To estimate the direct-axis inductance, the processing system controls direct-axis voltage to be alternating voltage and the quadrature-axis voltage to be zero. The direct-axis inductance is estimated based on the direct-axis alternating voltage and on direct-axis alternating current. 1. A device for estimating inductances of an electric machine when a rotor of the electric machine is stationary , the device comprising a processing system configured to:control stator voltages of the electric machine to constitute a balanced multi-phase alternating voltage,estimate rotational position of the rotor based on a negative sequence component of stator currents of the electric machine, the negative sequence component being caused by saliency of the rotor,control direct-axis current of the electric machine to be direct current and quadrature-axis voltage of the electric machine to be alternating voltage,estimate quadrature-axis inductance of the electric machine based on the quadrature-axis alternating voltage and on quadrature-axis alternating current caused by the quadrature-axis alternating voltage,control direct-axis voltage of the electric machine to be alternating voltage and the quadrature-axis voltage of the electric machine to be substantially zero, andestimate direct-axis inductance of the ...

Four quadrant motor controller minimizing distortion index

A motor control apparatus and method is disclosed for controlling a multiphase AC motor by controlling electrical quantities such as voltage or current applied to the stator of the motor. The apparatus includes a motor command unit for defining a reference signal indicative of a desired motor parameter such as torque, speed, or position, a DC voltage link, a controller, a line-side converter including active switches in a bridge configuration for controlling the bidirectional flow of electrical power between the DC voltage link and a source of AC power, and a motor-side converter including active switches in a bridge configuration for controlling stator electrical quantities by controlling the bidirectional flow of electrical power between the DC voltage link and the motor, where the motor-side converter includes control means responsive to the reference signal for controlling the active switches to produce stator electrical quantities that correspond to the reference signal.

Electric power steering apparatus

An electric power steering apparatus that ideally compensates dead time of the inverter without the tuning operation, improves distortion of the current waveform and the responsibility of the current control, and suppresses sound, vibration, the ripple that the low speed steering maneuver is effective. The apparatus converts dq-axes current command values calculated based on at least a steering torque into 3-phase duty command values, controls a 3-phase brushless motor by an inverter of a PWM-control, and applies an assist torque to a steering system of a vehicle, wherein 3-phase detection voltages are estimated based on 3-phase motor terminal voltages, loss voltages due to a dead time of the inverter are estimated from differences between 3-phase correction command voltages calculated from the 3-phase duty command values and the 3-phase detection voltages, and a dead time compensation of the inverter is performed by feeding back dead time compensation values obtained by compensating the ...

Inverter and method of controlling same

An inverter is provided. The inverter includes a current providing unit providing a first axis current and a second axis current to an induction motor; a revolutions per minute (RPM) measuring unit measuring the RPM of the induction motor; and a control unit changing the second axis current according to the measured RPM.

MOTOR CONTROL SYSTEM AND METHOD FOR ENVIRONMENTALLY-FRIENDLY VEHICLE

A motor control system and method are provided for a vehicle that reduces torque ripples due to motor system characteristics while the vehicle is running at ultra-low speed in an electric vehicle running mode. The system includes a current command generator that generates a current command based on a torque command, a motor speed, and a reference voltage. A current controller generates a voltage command based on the current command. A coordinate transformer transforms the voltage command into a 3-phase voltage command by a coordinate transformation and a PWM (pulse width modulation) signal generator generates a switch signal based on the 3-phase voltage command. A PWM inverter generates a 3-phase driving current to drive a motor based on the switch signal and a current control ripple compensator applies a reverse phase harmonic wave to the current controller to reduce a harmonic wave caused by errors generated from the current controller.

CURRENT SOURCE INVERTER DEVICE

A current source inverter device according to an embodiment includes an inverter that supplies AC power to a number n (integer of 1 or greater) of AC motors each having a number m (integer of 2 or greater) of windings per phase; and a controller that controls the inverter and AC motor. The inverter includes a switching unit, in which a number n×m+1 of switching elements per phase are connected in series, and a number n×m of nodes among the switching elements are respectively connected with a number n×m of different windings with the same phase among the windings of the number n of the AC motors. The controller includes a mode selector that selects at least one winding as a supply target of the AC power from the number n×m of the windings based on a rotation speed of the AC motor.

APPARATUS FOR OPERATING INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR

Provided is an apparatus for operating interior permanent magnet synchronous motor by receiving a first current command of a flux weakening control region I in a system including a detector measuring a position and a speed of a rotor of an IPMSM, the apparatus including a feedback unit transmitting over-modulated voltage information to a correction unit, the correction unit using the rotor speed and the over-modulated voltage information to correct the first current command to a second current command of a flux weakening control region II, a control unit controlling the second current command to output a voltage, a first limit unit limiting an output of the control unit to a maximum voltage synthesizable by an inverter unit, and the inverter unit applying a 3-phase voltage command for following a command torque to the IPMSM using an output of a voltage limit unit.

Optimized field oriented control strategies for permanent magnet synchronous motors

A motor control system and associated method includes a transform component configured to receive current values associated with a motor being driven by the motor control system, and output rotating coordinate system values representing a flux generating component and a torque generating component of a current space vector. The motor control system and method further includes a control component configured to receive the flux generating component and the torque generating component of the current space vector, and generate motor control signals for driving the motor by performing a Cartesian to polar transform to obtain values associated with a rotating coordinate system followed by an angle addition to convert the rotating coordinate system values to values of a stationary coordinate system.

Shift range control apparatus

A rotational angle sensor detects the rotational position of a motor and outputs a motor rotational angle signal corresponding to the rotational position of the motor. An output shaft sensor detects a change in the magnetic field of a target that rotates integrally with an output shaft to which the rotation of the motor is transmitted, and outputs an output shaft signal according to the rotational position of the output shaft. A shift range control unit includes a motor control unit.

METHOD AND APPARATUS FOR CONTROLLING AN AC INDUCTION MOTOR

A method and apparatus for controlling an AC induction motor, having at least two phases. The motor is controlled by two input signals (S1, S2), which are connected to a resolver (1), the output signals of which are used to generate separate supply signals to the motor phases. When doing this a first and a second signal (B1, B2), representing the magnetic field in the motor, are fed back to the resolver (1) for modification of the input signals (S1, S2). A measuring and calculating unit (12) generates the signals which represent the magnetic field in the motor by reconstruction from measuring signals and has two signal channels for generation of the magnetic field signals above and below a predetermined frequency (w0), respectively. In a first signal channel a signal (E') which represents the magnetizing voltage is integrated and fed through a high pass filter (24), the integrator and the high pass filter being combined into a single block, while in the other signal channel a signal (I' ...

METHOD FOR BRAKING A FIELD-GUIDED ELECTRIC MOTOR

Die Erfindung betrifft ein Verfahren zum Abbremsen eines feldgeführten Elektromotors, der über eine Steuervorrichtung (2) an einem Akkupack (3) mit einer Versorgungsspannung (Uv) betrieben wird. Der Elektromotor (1) weist einen Stator (8) und einen Rotor (9) auf, wobei der Stator (8) mehrere Feldwicklungen (a, b, c) trägt. Zur Ausbildung eines antreibenden elektromagnetischen Drehfeldes im Motorbetrieb werden die Feldwicklungen (a, b, c) in Abhängigkeit der Drehlage des Rotors (9) von der Steuervorrichtung (2) bestromt. In einem rekuperativen Bremsbetrieb werden in den Feldwicklungen (a, b, c) des Stators (8) induzierte Spannungen einen rekuperativen Akkustrom (37) mit einer Rückspeiseleistung (PBattery) bewirken, die den Akkupack (3) auflädt. Der Motorstrom (7) setzt sich aus einem ersten, feldbildenden Motorstromanteil (id) und einem zweiten, momentbildenden Motorstromanteil (iq) zusammen, wobei im Bremsbetrieb des Elektromotors (1) die Größe des momentbildenden Motorstromanteils (iq) ...

Motor performing vector control in a start mode

POWER CONVERSION SYSTEM AND POWER CONVERSION DEVICE

PROBLEM TO BE SOLVED: To provide a power conversion system and a power conversion device to aim for further improved reliability. SOLUTION: A power conversion system of this invention comprises: a motor; an inverter circuit to output a U-phase current, a V-phase current, and a W-phase current to the motor; a current sensor to detect the U-phase current, the V-phase current, and the W-phase current; and a control circuit to control the inverter circuit based on a torque command value and the value detected by the current sensor so that the U-phase current, the V-phase current, and the W-phase current output from the inverter circuit form a sine wave. The control circuit comprises: a current component calculation part to extract current components overlapped in the U-phase current, the V-phase current, and the W-phase current for every phase based on the value detected by the current sensor; and an AC current abnormality detection part to detect abnormality in the AC current running the motor ...

VECTOR CONTROLLER FOR AUTOMATIC REGULATION

PURPOSE: To largely delete the labor of trial drive regulation by simply measuring the motor constant by utilizing a vector controller, and automatically regulating on the basis of the measured result. CONSTITUTION: The prescribed current is flowed to a motor by using a vector controller prior to the operation, and a voltage component detector 14 detects the d-shaft and q-shaft components of a motor voltage on the basis of the motor voltage generated from the result. A motor constant calculator 16 inputs a torque current command it from a speed regulator 5, a rotary speed signal ωr from a rotating speed detector 4 and d-shaft and q-shaft components of the motor voltage from a voltage component detector, and calculates the control constants of r, l1 L1, L2, J on the basis of the measured results. Then, the calculation of the vector control uses the control constants to control the speed of the motor. COPYRIGHT: (C)1986,JPO&Japio ...

Трехфазное устройство преобразования мощности с фиксированной нейтральной точкой

Изобретение относится к области преобразовательной техники. В процессе регулирования тока секция (2) регулятора тока выполняет пропорционально-интегральное регулирование на основе расхождения между командным током Id_cmd d-оси и измеренным током Id_det d-оси и расхождения между командным током Iq_cmd q-оси и измеренным током Iq_det q-оси. Секция (4) регулятора потенциала нейтральной точки вычисляет скорректированное командное напряжение V_cmd' путем сложения величины V_cmp компенсации регулирования нейтральной точки с трехфазным командным напряжением V_cmd. Ограничитель LMT3 выдает обработанное ограничителем командное напряжение V_cmd'' путем ограничения выходного сигнала скорректированного командного напряжения V_cmd'. Преобразователь (5) трех фаз в две фазы выдает величины Vd_back, Vq_back обратной связи путем преобразования трех фаз обработанного ограничителем командного напряжения V_cmd'' в две фазы. Секция (2) регулятора тока выполняет интегральное регулирование в соответствии с величинами ...

ЭЛЕКТРОПРИВОД С ПОВЫШЕННОЙ ЧУВСТВИТЕЛЬНОСТЬЮ К ОТРАБОТКЕ МАЛЫХ УГЛОВЫХ СКОРОСТЕЙ ВРАЩЕНИЯ

Изобретение относится к области электротехники и может быть использовано в системах регулирования для отработки и регулирования задаваемых угловых скоростей вращения объекта управления в широком диапазоне: от тысячных долей градуса в секунду до сотен градусов в секунду. Технический результат заключается в увеличении чувствительности отработки задаваемой угловой скорости вращения объекта управления в режиме низких скоростей вращения без увеличения разрядности датчика углового положения. В электроприводе, состоящем из двигателя, редукторной передачи, датчиков обратной связи, электронного блока и объекта управления, два датчика углового положения размещают по осям вращения объекта управления и ротора исполнительного двигателя и осуществляют интегрирование задаваемых угловых скоростей вращения объекта управления и ротора двигателя, замыкание двух контуров регулирования по осям вращения объекта управления и ротора исполнительного двигателя, вычисление сигналов рассогласования, анализ величины ...

УСТРОЙСТВО УПРАВЛЕНИЯ ЭЛЕКТРОДВИГАТЕЛЯ ПЕРЕМЕННОГО ТОКА

... 1. Устройство (200) управления электродвигателя (6) переменного тока, содержащее: ! инвертор (2), который подключен к источнику постоянного тока и выводит трехфазные переменные токи произвольной частоты и произвольное напряжение на электродвигатель (6) переменного тока; ! детектор (3, 4, 5) тока, который детектирует ток электродвигателя (6) переменного тока; ! модуль (50) формирования команд управления напряжением/ШИМ-сигналов, который вычисляет команду управления выходным напряжением инвертора (2) на основе сигнала из детектора (3, 4, 5) тока и формирует сигнал широтно-импульсной модуляции, чтобы управлять переключающим элементом, который расположен в инверторе (2), на основе команды управления выходным напряжением; и ! модуль (100A, 100B, 100C, 100D) компенсации дисбаланса токов электродвигателя, который формирует величины компенсации дисбаланса токов электродвигателя соответствующих фаз на основе токов, по меньшей мере, любых двух из фаз из токов, детектируемых посредством детектора ...

СИСТЕМА И СПОСОБ (ВАРИАНТЫ) УПРАВЛЕНИЯ ДВИГАТЕЛЕМ

... 1. Система управления двигателем, содержащая:блок управления, который определяет выходные напряжения для работы двигателя на основе требования вращающего момента;блок переключения, который формирует сигналы переключения для инвертора, который приводит в действие двигатель,в которой блок переключения формирует сигналы переключения, основанные выходных напряжениях,в которой блок переключения формирует сигнал выхода из диапазона напряжений (OOV) путем сравнения выходных напряжений, максимального рабочего цикла и напряжения на шине DC, которая обеспечивает питание инвертора; имодуль фильтра, который формирует размер OOV, фильтруя сигнал OOV,в которой блок управления выборочно ограничивает требование вращающего момента на основе размера OOV.2. Система управления двигателем по п.1, дополнительно содержащая блок регулирования скорости, который формирует требование вращающего момента на основе заданной скорости вращения, в которой блок регулирования скорости выборочно приостанавливает требование ...

Motorsteuerung

Control unit for inverter-fed induction motor

A control unit for an inverter-fed induction motor transforms a default value of torque and magnetic flux for two phases into a default value for three phases to set the primary current and transforms this into a two-phase current, including torque current and excitation current. Circuits calculate (a) the default excitation current based upon the flux and the excitation inductance, (b) the deviation of the actual excitation current from this, (c) the default excitation voltage in the same phase as the current, (d) the default torque current on the basis of the default torque and flux, (e) the deviation of the actual torque current from this, (f) the default torque voltage on the basis of the torque current.

METHOD FOR INCREASING THE MAXIMUM SPEED OF A SYNCHRONOUS MOTOR WITH A GIVEN EXCITING FIELD POWER AND TERMINAL VOLTAGE AND APPARATUS THEREFOR

Elektrische Servolenkungsapparatur

Eine elektrische Servolenkungsvorrichtung beinhaltet eine Wechselstromdrehmaschine, die ein Hilfsdrehmoment zum Unterstützen eines Lenkdrehmoments eines Lenksystems erzeugt; und eine Steuervorrichtung, die eine Steuerung derart durchführt, dass die gestattete elektrische Stromamplitude der Wechselstromdrehmaschine groß wird, falls eine Drehgeschwindigkeit der Wechselstromdrehmaschine vergrößert wird. Entsprechend ist es möglich, die Grenze der Zahl von Wiederholungen oder der kontinuierlichen Zeit von stationärem Lenken oder Endkontakt aufzuheben oder abzuschwächen.

Steuerungsvorrichtung einer Motorantriebsvorrichtung

Offenbart ist eine Steuerungsvorrichtung einer Motorantriebsvorrichtung, die in der Lage ist, eine Starkfeldsteuerung geeignet zu beenden, in einem Aufbau, der die Starkfeldsteuerung und die Viereckwellensteuerung basierend auf einem Spannungsindex, beispielsweise einem Modulationsfaktor, durchführt. Eine Spannungswellenformsteuerungseinheit führt eine PWM-Steuerung durch, wenn ein Spannungsindex M, der die Größe der Spannungsbefehlswerte Vd und Vq bezüglich einer DC-Spannung Vdc angibt, kleiner als ein vorbestimmter Viereckwellenschwellenwert ist, und führt eine Viereckwellensteuerung durch, wenn der Spannungsindex M gleich oder größer als ein Viereckschwellenwert ist. Eine Feldeinstellungseinheit 8 führt eine Starkfeldsteuerung bei der Bedingung durch, dass der Spannungsindex M gleich oder größer als ein vorbestimmter Starkfeldschwellenwert ist, der kleiner als der Viereckschwellenwert ist. Eine Modussteuerungseinheit 5 beendet die Starkfeldsteuerung, die durch die Feldeinstellungseinheit ...

MOTORSTEUERVERFAHREN, MOTORSTEUERSYSTEM UND ELEKTRISCHES SERVOLENKSYSTEM

Ein Motorsteuerverfahren ist bereitgestellt, das folgende Schritte aufweist: einen Schritt zum Erfassen zumindest eines Messdrehmomentwinkels und zweier Schätzungsdrehmomentwinkel; einen Schritt zum Finden aller Kombinationen von zwei Drehmomentwinkeln, die in Bezug auf eine Gruppe kombiniert werden können, die aus zumindest einem Messdrehmomentwinkel und zwei Schätzdrehmomentwinkeln gebildet ist, und Ausführen einer Berechnung zum Bestimmen des Fehlers in jeder der Kombinationen; einen Schritt zum Auswählen eines Steuermodus für einen Motor aus einer Mehrzahl von Steuermodi, die einen Sensormodus, einen sensorlosen Modus und einen Abschaltmodus umfassen, wobei die Auswahl durchgeführt wird durch Berücksichtigen einer Tabelle, die Beziehungen zwischen der Mehrzahl von Steuermodi und einer Mehrzahl von Referenzmustern darstellt, die sich auf berechnete Fehlergruppen beziehen; und einen Schritt zum Steuern eines Motors gemäß dem ausgewählten Steuermodus.

FIELD-ORIENTED REGULATION OF AN INDUCTION MACHINE AT THE TENSION COVER

PROCEDURE FOR THE TORQUE REGULATION OF AN ASYNCHRONOUS MACHINE

CURRENT COLLECTION UNIT AND MOTOR CONTROL DEVICE

Verfahren zur Regelung des Drehmoments einer Asynchronmaschine

The objective invention describes a method for controlling the torque of the asynchronous machine in the stator-fixed coordinate system without having to use a known flux model based on a voltage and current model. This is achieved by virtue of the fact that the stator flux step (deltapsiS(n+1)) to be carried out in the next scanning step (n+1) in order to achieve a desired torque and the rotor flux (psiR(n+1)) and stator flux (psiS(n+1)) for the next scanning step (n+1) are calculated in stator-fixed coordinates (alpha,beta) on the basis of the current rotor flux (psiR(n)) and stator flux (psiS(n)).

Integrated motor driver/controller with sensorless or sensored commutation

A motor controller configured to control different types of electronically commutated motors (ECMs) includes a range of different rotor orientation signal inputs to accommodate differences between ECM motor types. The motor controller includes a control unit that receives motor operation commands and controls operation of the ECM in accordance with the motor operation commands. The control unit receives and stores data designating ECM type and estimates rotor position based on the designated ECM type.

PROCESS AND DEVICE FOR THE CONTROL AND REGULATION OF AN ALTERNATING CURRENT, SPECIFICALLY SYNCHRONOUS, ELECTRIC ROTATING MACHINE

Procédé de régulation d'une machine électrique tournante (1) comprenant : une étape préalable de détermination d'une loi de commande en tension discrète de la machine (1), déterminant la tension de commande discrète (~s,k-1) à appliquer chaque instant d'échantillonnage (k), sous la forme d'un premier terme correspondant à l'évolution libre de l'état de la machine en l'absence de commande, entre les instants d'échantillonnage précédent (k-1) et courant (k), et d'un second terme dépendant de valeur du couple de consigne et d'une valeur de consigne (W*) d'énergie magnétique consommée par la machine, et à chaque instant d'échantillonnage, une étape de détermination de la tension commande (~s,k-1) à appliquer à la machine pour que le couple de la machine atteigne le couple de consigne (I*), et l'énergie magnétique consommée corresponde à la valeur de consigne d'énergie (W*).

APPARATUS FOR THE CONTROL OF A SALIENT-POLE MACHINE

Apparatus for controlling a salient-pole machine includes a stator current control element to make the stator current iS follow preset desired values i?*. A field current control element develops from preset desired flux values ?*, from the flux signal output of a flux computer (direction .PHI.L) and from an inductance parameter (the shunt inductance Xq of the machine) a fictitious field current value signal i?*, which represents the field current value which would be used to control a hypothetical nonsalient-pole machine. This signal i?* is modified by a correction factor derived from the product of the longitudinal component of the flux ?d (from the flux computer) and the difference between the reciprocals < IMG > of the shunt and series inductances of the machine, to give a field current control signal that accounts for the asymmetry of the salient-pole machine.

ARRANGEMENT AND METHOD FOR FORCE COMPENSATION IN ELECTRICAL MACHINES

An electrical machine (1) comprises a rotor (20), a stator (10), a rotor power supply (50), at least one sensor (70) and a rotor magnetization control arrangement (60). The rotor has rotor windings (22) for controlling magnetization of rotor magnetic poles (24). The sensor is arranged to measure a parameter associated with a relative force between the stator and the rotor. The rotor magnetization control arrangement is communicationally connected to the sensor for receiving a signal representing the measured parameter. The rotor magnetic poles are divided into at least two groups (23). The rotor magnetization control arrangement is arranged for controlling the magnetization of the groups individually by providing a respective individually controllable rotor current. The rotor magnetization control arrangement is arranged to individually control the rotor currents in dependence of the signal representing the measured parameter. A method for controlling such an electrical machine is also ...

MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD

The present invention is provided with: a control-start/stop-determining unit 11 that receives as inputs a start/stop request signal for controlling the starting and stopping of a motor 5 and information about the rotation speed of the motor 5, and outputs a state signal for switching the state of a driving voltage between the three states of control stop, control start, and control initiate; and a drive voltage control unit 12 for gradually increasing the phase current fed to the motor 5 using a PWM signal while the state signal transitions to the state of control initiate after transitioning from the state of control stop to the state of control start.

MOTOR CONTROL DEVICE AND CONTROL METHOD

In this motor control method, applied voltage applied to a motor through an inverter is controlled by voltage phase control. This control method is provided with: a phase command value calculation step for calculating, on the basis of a torque command value for a motor, a phase command value to be used in the voltage phase control, by feed-forward control; an amplitude command value calculation step for calculating an amplitude command value used in the voltage phase control in accordance with the drive voltage of the inverter; a voltage command value calculation step for calculating a voltage command value for the motor in accordance with the phase command value and the amplitude command value; and a voltage application step for applying the applied voltage to the motor from the inverter in accordance with the voltage command value.

TRAINING APPARATUS, ARRANGEMENT AND METHOD

The present invention relates to a training apparatus comprising a training element (1) for a user performing exercises, an AC motor (3) and a frequency converter (5) being arranged to control the AC motor (3), wherein the frequency converter (5) comprises measuring means being arranged to measure a voltage and a current of the AC motor (3) and calculation means being arranged to calculate a magnetic state of the AC motor (3) using the measured voltage, the measured current, a reference torque and a reference flux in order to generate a torque of the AC motor (3). The training apparatus further comprises a control unit (6) having a machine control module (27) being arranged to calculate the reference flux and the reference torque using an intended overall torque, wherein the machine control module (27) is connected to the frequency converter (5) and arranged to transmit the reference flux and the reference torque to the frequency converter (5). Further, the present invention comprises a ...

VARIABLE-FLUX MOTOR DRIVE SYSTEM

The present invention provides a variable-flux motor drive system including a permanent-magnet motor 4 having a permanent magnet, an inverter 1 to drive the permanent-magnet motor, and a magnetize means to pass a magnetizing current for controlling the flux of the permanent magnet. The permanent magnet is a variable magnet whose flux density is variable depending on a magnetizing current from the inverter 1. The magnetize means passes a magnetizing current that is over a magnetization saturation zone of magnetic material of the variable magnet. This system improves a flux repeatability of the variable magnet 53 and a torque accuracy.

DRIVE CONTROL APPARATUS FOR ELECTRIC CAR

VARIABLE SPEED WIND TURBINE

A variable speed wind turbine (10) is disclosed comprising a turbine rotor (12) that drives an AC induction generator (16 and 18), a power converter (20-34) that converts the generator output to fix ed- frequency AC power, a generator controller (38 and 40), and an inverter controller (50 and 52). The generator controller (38 an d 40) uses field orientation to regulate either stator cur- rents or voltages to control the torque reacted by the generator. The invert er controller (50 and 52) regulates the output currents to supply multi-phase AC power having leading or lagging currents at an angle specified by a power factor control signal.

Device for controlling electric motor and method for controlling electric motor

A device that is for controlling an electric motor and that performs voltage phase control is provided with: a dq-axis voltage generation unit that calculates a dq-axis voltage command value on the basis of a voltage phase command value and a voltage vector norm command value; a stabilization filter that is configured from a first through fourth filter determined on the basis of the propagation characteristics from an imposed voltage to an output current, and that eliminates the resonance characteristics of dq-axis current with respect to the dq-axis voltage command value; and a voltage imposition unit that imposes an AC voltage to the motor on the basis of the final dq-axis voltage command value. The stabilization filter generates a final d-axis voltage command value from the results of performing the processing of the first filter and second filter on a d-axis voltage command value and a q-axis voltage command value, and generates a final q-axis voltage command value from the results ...

Motor control apparatus, machine learning apparatus and method therefor

Current source inverter device

Permanent magnet synchronization motor vector control device

Provided is a vector control device for a permanent magnet synchronization motor driven by an inverter. The vector control device includes: a current instruction generation unit (10) for generating a d-axis current instruction (id) and q-axis current instruction (iq) from a given torque instruction (T); and a current control unit (20) operating so that the motor current coincides with the current instruction. The current instruction generation unit includes: a d-axis basic current instruction generation unit (11) for generating a first d-axis basic current instruction (id1) by using the torque instruction; a limiter unit (12) for inputting the current instruction (id1) and outputting a value limited to below zero as a second d-axis basic current instruction (id2); a d-axis current instruction correction unit (14) for outputting the current instruction (id2) corrected in accordance with the d-axis current instruction correction value dV as a d-axis current instruction (id); and a q-axis ...

Valve control device

Controller for motor

Rotating armature controller

CONTROL CIRCUIT INDUCTION MOTOR.

METHOD AND SYSTEM FOR OPERATING AN ASYNCHRONOUS ELECTRIC MACHINE FOR A MOTOR VEHICLE.

APPARATUS FOR CONTROLLING SPEED IN VECTOR CONTROLLED AN AC MOTOR

본 발명은 교류 전동기의 전류 검출에 있어서 전류 센서, 주변 회로 등에 의해 발생되는 측정 전류의 오차를 억제하여 보다 정확한 속도 제어 및 토크 제어에 적용함으로써 교류 전동기의 소음 및 진동을 감소할 수 있는 벡터 제어 교류 전동기의 속도 제어 장치를 제공한다. 본 발명은 기존과 같이 스펙트럼 분석을 해야 하는 부담으로부터 벗어날 수 있고, 고가의 프로세서를 구비하지 않고도 구현할 수 있어서 경제적이다 The present invention is to control the error of the measurement current generated by the current sensor, peripheral circuit, etc. in the current detection of the AC motor by applying to more accurate speed control and torque control, vector controlled AC which can reduce the noise and vibration of the AC motor Provided is a speed control device for an electric motor. The present invention is free from the burden of spectral analysis as before, and economical because it can be implemented without having an expensive processor. 오프셋 오차, PI제어, 백터제어, 속도제어, 전류보상, 오차연산, 상전류 Offset error, PI control, vector control, speed control, current compensation, error operation, phase current

ELEVATOR CONTROL DEVICE

Method and apparatuses for detecting failure of motor current sensor

MOTOR AND APPARATUS AND METHOD FOR CONTROLLING THE MOTOR

A motor, and a method and apparatus for controlling the motor for a washer are provided. The motor includes a stator on which a plurality of coils are wound and disposed in a circular shape, a rotor having a plurality of permanent magnets spaced apart from the coils by a predetermined distance, and a motor controller performing a vector control method for controlling a current vector applied on a d-q axis rotating coordinate system in a start mode of the rotor to make a current speed of the rotor follow a reference speed of the rotor by comparing the current speed with the reference speed. The motor controller includes a speed/position detector for detecting the current speed and a current position of the rotor using an on/off signal of a hall sensor installed on the stator.

VECTOR CONTROLLER OF PERMANENT MAGNET SYNCHRONOUS MOTOR

In a method for controlling a current command value by comparing a voltage with a set value, it is required to vary the set value depending on voltage variation and thereby complicated control is required. The vector controller of a permanent magnet synchronous motor comprises a section for correcting a current command value by a current command value correction value calculated based on a modulation factor to thereby be able to achieve a stable flux-weakening control in a single pulse mode in a high speed region with a simple arrangement.

AC MOTOR CONTROLLER

An AC motor controller comprising an inverter connected to a DC power supply to output a three-phase AC current to the AC motor, a current detector for detecting the current of the AC motor, and a voltage command/PWM signal generating section for calculating an inverter output voltage command according to the signal from the current detector and generating a pulse-width modulation signal for controlling a switching element included in the inverter according to the output voltage command. The controller further comprises a motor-current unbalance compensating section for generating a motor-current unbalance compensation amount according to the current detected by the current detector. The voltage command/PWM signal generating section directly or indirectly adjusts the pulse-width modulation signal depending on the operating status of the inverter according to the amount of motor-current unbalance compensation.

Motor control device, control program therefor, and method for the control

A motor control device determines a rotation angle and an angular speed of a motor, and has: a correcting unit including N number (N is an positive integer equal to or more than 2) of bit-shift circuits, which divide the angular speed by powers of 2 by bit shift, and a circuit, which subtracts output values of the second to Nth bit-shift circuits from an output value of the first bit-shift circuit to determine a correction amount for the rotation angle and correct the rotation angle by the correction amount; so as to determine two-phase direct voltages to obtain a target torque from the three-phase alternate currents passing through the motor according to the angular speed, and convert the two-phase direct voltages into the three-phase alternate voltages according to the sine, cosine of the corrected rotation angle.

Systems and methods for synchronous power generation

One embodiment of the present invention is a unique method of controlling the output of a synchronous electrical machine. Another embodiment is a unique method of controlling the output of a synchronous electrical machine for powering a load. Still another embodiment is a unique aircraft power generation system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for fluid driven actuation systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

Electric motor controller and electric motor control system

A controller 40 performs a control operation in a cycle based on a carrier frequency fc of a carrier, specifically, at timings corresponding to the peaks and troughs of the carrier signal. Moreover, in the case where the carrier frequency fc is switched, a disturbance estimation part forming the controller 40 updates control constants that are used for disturbance estimation and are dependent on the control operation cycle, in a control operation performed one cycle after a control operation immediately after the switching of the carrier frequency fc.

Motor Control with Voltage Harmonic Shaping

A control system for an electric motor comprises a current sensing means arranged to produce a current sensing output indicative of electric current in the motor, current control means arranged to receive the current sensing output and to output a voltage demand indicative of voltages to be applied to the motor, and voltage demand correction means arranged to generate a correction signal and to use the correction signal and the voltage demand to produce a corrected voltage demand.

Synchronous motor control device for controlling synchronous motor to carry out power regenerative operation and stop synchronous motor at the time of power failure

A second q-axis current command value, which is set by a q-axis current command value setting unit when an alternating-current power source fails at the time of driving of a synchronous motor, and a second d-axis current command value, which is set by a d-axis current command value setting unit when the alternating-current power source fails at the time of the driving of the synchronous motor, are set so that an absolute value of power per unit time of the synchronous motor is equal to loss per unit time of the synchronous motor.

Motor control device

An object is to provide a specific achievement means for achieving reliable failure determination in a control system in a motor control device. The motor control device includes motor drive means for supplying a motor current to a motor; motor current detection means for detecting the motor current; and a controller to which a motor current detection value from the motor current detection means is input, and which outputs a drive signal to the motor drive means, in which the controller includes voltage control means for controlling a voltage applied to the motor; power supply voltage detection means; means for limiting the maximum value (%) of a drive duty ratio in a PWM circuit to a smaller value, upon determining power supply voltage drop; and failure determination means for determining a failure in a case of an abnormal motor current value.

ACTUATING DEVICE AND VEHICLE STEERING DEVICE COMPRISING AN ELECTRIC ENGINE AND A ROTOR POSITION SENSOR AND A MULTITURN SENSOR

A regulator may include an output element and an electric motor for driving the output element. The electric motor may have a rotor. A mechanical power transmission device may be located between the rotor of the electric motor and the output element. A rotor position sensor for determining a position of the rotor may be included. A multi-turn sensor may also be included, where the multi-turn sensor is configured to monitor rotation of at least one of the rotor and a rotating element of the mechanical power transmission device 1. A regulator comprising:an output element;an electric motor for driving the output element, the electric motor having a rotor;a mechanical power transmission device between the rotor of the electric motor and the output element;a rotor position sensor for determining a position of the rotor; anda multi-turn sensor configured to monitor rotation of the rotor.2. The regulator according to claim 1 , wherein each of the rotor position sensor and the multi-turn sensor share a transmitter element.3. The regulator according to claim 2 , wherein the transmitter element is a permanent magnet.4. The regulator according to claim 1 , wherein the multi-turn sensor and the rotor position sensor form a sensor module.5. The regulator according to claim 1 , wherein the multi-turn sensor and the rotor position sensor are formed on the same semiconductor chip.6. The regulator according to claim 1 , wherein the output element does not have a position sensor.7. A motor vehicle steering device comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the regulator according to ; and'}a steering rod, wherein the steering rod forms the output element of the regulator for generating a steering movement of at least one vehicle wheel.8. The motor vehicle steering device according to claim 7 , wherein a mechanical connection is included between the output element and a steering wheel.9. The motor vehicle steering device according to claim 7 , wherein the motor ...

CONTROL APPARATUS FOR POWER STEERING APPARATUS AND POWER STEERING APPARATUS USING THE SAME

Provided is a control apparatus for a power steering apparatus, and a power steering apparatus using it that can reduce electromagnetic noise with the aid of a spread spectrum, thereby realizing stabilized motor control. The control apparatus for the power steering apparatus includes a PWM carrier period setting portion configured to set a natural number of PWM carrier periods within one period of a control period and also changeably set a length of the PWM carrier period, a motor current detection execution portion configured to detect a motor current during the control period, a motor rotational angle detection execution portion configured to detect a motor rotational angle during the control period, and an execution timing setting portion configured to set a timing at which the motor current is detected by the motor current detection execution portion or a timing at which the motor rotational angle is detected by the motor rotational angle detection execution portion, based on the control period set by the control period setting portion. 1. A control apparatus for a power steering apparatus , the control apparatus being configured to drive and control a brushless motor configured to provide a steering force to a steering mechanism configured to turn a turning target wheel according to a steering operation performed on a steering wheel , the control apparatus comprising:a current instruction value calculation portion configured to calculate a current instruction value directed to the brushless motor according to a driving condition of a vehicle;a voltage instruction value calculation portion configured to calculate a voltage instruction value directed to the brushless motor based on the current instruction value;a PWM control portion configured to output a PWM duty signal to each phase of the brushless motor according to the voltage instruction value;a bridge circuit including a switching circuit configured to be driven and controlled by the PWM duty signal, the ...

MOTOR CONTROL APPARATUS

A microcomputer stores an offset correction value for correcting an offset of a detected current along with a pulse shift for each of a detected current of a maximum phase to which power is supplied for the longest time among three phases and a detected current of a minimum phase to which power is supplied for the shortest time among the three phases, and corrects the detected current of each of the phases with use of the stored offset correction values for the detected current of the maximum phase and the detected current of the minimum phase.

MOTOR DRIVE DEVICE THAT REDUCES COLLISION NOISE OF MOVING MEMBER, METHOD OF CONTROLLING SAME, AND STORAGE MEDIUM

A motor drive device that is capable of reducing collision noise generated by a mirror while maintaining a driving speed of the mirror. A control circuit of the motor drive device controls driving of a motor including magnetic sensors for detecting a rotational position of a rotor. An energization time-setting circuit of the control circuit sets an energization time period of the motor, and the control circuit controls driving of the motor depending on a detection result output from each magnetic sensor and the set energization time period. 1. A motor drive device that controls driving of a motor including a detection sensor for detecting a rotational position of a rotor , comprising:one or more processors, wherein the processor functions as the following units according to a program stored in a memory:a setting unit configured to set an energization time period of the motor; anda control unit configured to control driving of the motor, depending on a detection result output from the detection sensor and the energization time period set by the setting unit.2. The motor drive device according to claim 1 , wherein the motor includes a first stator and a second stator claim 1 ,wherein an output voltage from the detection sensor switches depending on a rotational position of the rotor, andwherein the control unit measures a time period which elapses until the output voltage from the detection sensor switches as a measured time period, and switches energization of the first stator and the second stator depending on a result of comparison between the measured time period and the set energization time period.3. The motor drive device according to claim 2 , wherein the control unit switches directions of electric currents flowing through respective coils included in the first stator and the second stator.4. The motor drive device according to claim 3 , wherein in a case where the measured time period and the set energization time period are equal to each other claim 3 , the ...

Device for controlling electric automobile

An electric vehicle includes a motor, an ECU, and an inverter device. A motor control module of the inverter device includes: a parameter map having motor parameters stored therein; an open loop control section to generate control variables in open loop control by a voltage equation using the parameters stored in the parameter map, in response to a torque command from the ECU; a current feedback control section to perform control to eliminate a deviation relative to a command current value generated in an inverter, in response to the torque command from the ECU; and a hybrid control section to control the motor on the basis of control variables which are generated on the basis of the control variables generated by the open loop control section and control variables generated by the current feedback control section.

ACTIVE VEHICLE SUSPENSION

A method of on-demand energy delivery to an active suspension system is disclosed. The suspension system includes an actuator body, a hydraulic pump, an electric motor, a plurality of sensors, an energy storage facility, and a controller. The method includes disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event. 1. (canceled)2. A method of energy delivery to an active suspension system , comprising:providing an active suspension system in a vehicle, the active suspension system comprising a hydraulic pump and an electric motor, the hydraulic pump and electric motor being operatively coupled, one or more sensors, an energy storage facility, one or more bypass valves, a controller, and one or more active suspension actuators, each actuator comprising an actuator body, a compression volume, an extension volume, and a piston;detecting a road induced movement of a wheel of the vehicle with at least one of the one or more sensors;sending data representing the movement from the at least one of the one or more sensors to the controller;determining, at the controller, based on the data representing the movement, a first torque command to be applied to a shaft of the hydraulic pump;receiving a required amount of energy at the electric motor from the energy storage device;applying a first torque corresponding to the first torque command to the shaft of the hydraulic pump using at least a portion of the required amount of energy received thereby altering a pressure in at least one of the compression volume or the extension volume; andmodifying flow of hydraulic fluid to the hydraulic pump from at least one of the compression volume or the extension volume with at least one of the one or more bypass valves.3. The method of claim 2 , further comprising ...

PERMANENT MAGNET MOTOR WITH PASSIVELY CONTROLLED VARIABLE ROTOR/STATOR ALIGNMENT

An electric motor including: a first and second subsystems, one of which is a magnetic rotor assembly and the other of which is a coil stator assembly; a hub assembly supporting the magnetic rotor assembly and the coil stator assembly and defining an axis of rotation; and a bearing assembly supporting at least one of the first and second subsystems on the hub assembly, wherein the first subsystem has an array of lift-generating elements for generating axially directed magnetic fields, the second subsystem has an electrically conductive region aligned with and opposite to the array of lift-generating elements of the first subsystem, and wherein the bearing assembly enables the magnetic rotor assembly to rotate about the rotational axis of the hub assembly and enables the separation distance of the magnetic rotor assembly from the coil stator assembly to change. 1. An electric motor comprising:a first subsystem and a second subsystem, one of the first and second subsystems comprising a magnetic rotor assembly and the other one of the first and second subsystems comprising a coil stator assembly;a hub assembly supporting the magnetic rotor assembly and the coil stator assembly and defining an axis of rotation; anda bearing assembly supporting at least one of the first and second subsystems on the hub assembly,wherein the magnetic rotor assembly comprises an array of torque-generating magnets;wherein the coil stator assembly comprises an array of driving coils opposing the array of torque-generating magnets of the magnetic stator assembly;wherein the first subsystem comprises an array of lift-generating elements for generating axially directed magnetic fields;wherein the second subsystem comprises an electrically conductive region aligned with and opposite to the array of lift-generating elements of the first subsystem, the array of lift-generating elements and the electrically conductive region separated from each other in the axial direction by a separation distance; ...

Electric Machine for a Motor Vehicle or Motorcycle

An electric machine for a vehicle includes a stator and a rotor, where the rotor is inserted into an interior space of the stator such that the rotor rotates about an axis of rotation during normal operation of the electric machine. The rotor has a receiving area in which a rotor position sensor is received, and the rotor position sensor is configured to supply an output signal to control the electric machine during normal operation of the electric machine, said output signal indicating a rotational position of the rotor. 1. An electric machine for a vehicle , wherein the electric machine comprises:a stator; anda rotor, which is inserted into an interior space of the stator such that the rotor rotates about an axis of rotation during normal operation of the electric machine,wherein the rotor has a receiving area in which a rotor position sensor is received,wherein the rotor position sensor is configured to supply an output signal to control the electric machine during normal operation of the electric machine, said output signal indicating a rotational position of the rotor.2. The electric machine according to claim 1 ,wherein the rotor is a hollow shaft which rotates about the axis of rotation, andwherein the receiving area is formed by the interior space of the hollow shaft.3. The electric machine according to claim 2 , wherein the rotor position sensor is secured in the interior space on a carrier element and supported by the carrier element.4. The electric machine according to claim 3 ,wherein the rotor position sensor is secured on the carrier element by form fit and/or force locking, andwherein the rotor position sensor is configured to be loosened from the carrier element in a nondestructive manner.5. The electric machine according to claim 3 , wherein the rotor position sensor is integrated in the carrier element.6. The electric machine according to claim 2 , further comprising:a sensor track on an inner wall of the hollow shaft forming the rotor which ...

METHOD AND APPARATUS FOR DETECTING FAILURE OF CURRENT SENSOR OF MOTOR

A method and apparatus for detecting a failure of a current sensor measuring the magnitude of a current, by which a motor is driven. A required current calculator calculates a phase and a magnitude of a current required for a motor, in accordance with a torque required for the motor. An estimated current calculator calculates an estimated current, in accordance with the phase and the magnitude of the required current. A failure detector detects a failure of a current sensor by comparing the estimated current with a current measured by the current sensor. 1. An apparatus for detecting a failure of a current sensor measuring a magnitude of a current , by which a motor is driven , the apparatus comprising:a required current calculator calculating a phase and a magnitude of a current required for a motor, in accordance with a torque required for the motor;an estimated current calculator calculating an estimated current, based on the phase and the magnitude of the required current and position information of the motor; anda failure detector detecting a failure of a current sensor comparing the estimated current with a current measured by the current sensor.2. The apparatus according claim 1 , wherein the phase of the required current is determined in accordance with a required current in a d axis direction and a required current in a q axis direction of a magnetic flux of a rotor of the motor.3. The apparatus according to claim 1 , wherein the magnitude of the required current is determined in accordance with a required current in a d axis direction and a required current in a q axis direction of a magnetic flux of a rotor of the motor.4. The apparatus according to claim 1 , wherein the failure detector compares the estimated current with the current measured by the current sensor at a position of the motor in which the magnitude of one of phase currents of the estimated current is the greatest.5. The apparatus according to claim 1 , wherein the failure detector compares ...

NORMALIZATION OF MOTOR PHASE MEASUREMENTS

A method of normalizing phase measurements for a motor using a normalizing phase measurements (NPM) algorithm that a processor implements to cause a motor controller coupled to stator terminals of the phases to execute forcing a set of input current or voltage vectors (set of input vectors) including repeating the forcing after rotating the rotor through a full mechanical cycle to generate resulting current or voltage samples (resulting samples) of non-normalized phase A and phase B waveforms. The magnitude of the input vectors are sufficiently small to not move the rotor. A maximum value (x_max) and a minimum value (x_min) are determined for each of the non-normalized phase A and phase B waveforms. An offset value and normalization scale factor (NSF) are determined from the max and min values. The offsets and NSFs are applied to the non-normalized phase waveforms to generate normalized phase A and phase B waveforms. 1. A method of normalizing phase measurements for controlling an N-phase motor (motor) including phase A and at least phase B , comprising: forcing a set of input current or input voltage vectors (set of input vectors) to said stator terminals including repeating said forcing after rotating a rotor of said motor through discrete angles to complete at least one full mechanical cycle to generate resulting current or voltage samples (resulting samples) of non-normalized phase A waveforms and of non-normalized phase B waveforms, wherein a magnitude of said input vectors are all sufficiently small to not move said rotor, and wherein a time duration for said input vectors is essentially constant;', 'determining a maximum value (x_max) and a minimum value (x_min) for each of said non-normalized phase A waveforms and said non-normalized phase B waveforms;', 'using said x_max and said x_min, determining an offset value and normalization scale factor (NSF) for each of said non-normalized phase A and said phase B waveforms, and', 'applying said offset value and ...

Motor control device and motor control method

In an αβ coordinate system, vectors of currents flowing in three-phase AC motor are set in directions fixed relative to a zero vector current according to a voltage applied in six non-zero vector switching modes of an inverter. A current vector closest to a command current value is specified from those current vectors. Then, only a non-zero vector current when operating the inverter in the non-zero vector switching mode corresponding to the specified current vector is calculated.

MOTOR DRIVING CONTROL APPARATUS AND ELECTRIC APPARATUS

This motor driving control apparatus has (A) an inverter unit configured to drive a motor; (B) a separation switch configured to separate a power source from the inverter unit; and (C) a controller configured to instruct the separation switch to separate the power source from the inverter unit and control the inverter unit to perform switching according to a speed and a braking target torque, upon detecting an event that braking should be performed without passing a regenerative current to the power source from the inverter unit. By introducing the separation switch that operates as described above, it becomes possible to perform control so as to consume the power by the motor itself without passing the regenerative current to the power source such as a battery. 1. A motor driving control apparatus , comprising:an inverter configured to drive a motor;a separation switch configured to separate a power source from the inverter; anda controller configured to instruct the separation switch to separate the power source from the inverter and control the inverter to perform switching according to a speed and a braking target torque, upon detecting an event that braking should be performed without passing a regenerative current to the power source from the inverter.2. The motor driving control apparatus as set forth in claim 1 , wherein the power source is a battery.3. The motor driving control apparatus as set forth in claim 1 , wherein the separation switch is a switch to block a current from the power source to the inverter and a current from the inverter to the power source.4. The motor driving control apparatus as set forth in claim 1 , wherein the separation switch is a switch to selectively or simultaneously block a current from the power source to the inverter and a current from the inverter to the power source.5. The motor driving control apparatus as set forth in claim 1 , wherein the separation switch is a switch to block a current from the inverter to the power ...

VEHICLE DRIVING DEVICE AND METHOD THEREOF

A vehicle driving device is driven by a power unit. A three-phase motor includes a first stator winding and a second stator winding. The first stator winding is connected in parallel to the second stator winding, and the first stator winding and the second stator winding are synchronized with each other. A first current sensor is coupled to the first stator winding for measuring a first-phase current. A second current sensor is coupled to the first stator winding for measuring a second-phase current. A third-phase current of the first stator winding is generated according to a calculating procedure of the first-phase current and the second-phase current. A duty cycle between a first power module and a second power module is controlled according to a feedback compensation of the first-phase current, the second-phase current and the third-phase current. 1. A vehicle driving device , which is driven by a power supply unit , comprising:a three-phase motor comprising a first stator winding and a second stator winding, wherein the first stator winding is connected in parallel to the second stator winding, the first stator winding and the second stator winding are synchronized with each other, and each of the first stator winding and the second stator winding comprises a first-phase winding end, a second-phase winding end and a third-phase winding end;a first current sensor having a first end and a second end, wherein the first end of the first current sensor is coupled to the first-phase winding end of the first stator winding, and the first current sensor is configured to measure a first-phase current of the first stator winding;a second current sensor having a first end and a second end, wherein the first end of the second current sensor is coupled to the second-phase winding end of the first stator winding, and the second current sensor is configured to measure a second-phase current of the first stator winding;a first power module electrically connected to the power ...

Machine learning system and magnetizer for motor

A machine learning system according to an embodiment of the present invention includes a state observer for observing the winding temperature, winding resistance, current value, and rotor magnetic flux density of a magnetization unit having a magnetizing yoke and windings; a reward calculator for calculating a reward from the rotor magnetic flux density obtained by the state observer; and a learning unit for updating an action value table based on a magnetization rate calculated from the rotor magnetic flux density and a target magnetic flux density, the winding temperature, and the winding resistance.

Shift range control apparatus

A rotational angle sensor detects the rotational position of a motor and outputs a motor rotational angle signal corresponding to the rotational position of the motor. An output shaft sensor detects a change in the magnetic field of a target that rotates integrally with an output shaft to which the rotation of the motor is transmitted, and outputs an output shaft signal according to the rotational position of the output shaft. A shift range control unit includes a motor control unit.

METHOD AND SYSTEM FOR CONTROLLING A BRUSHLESS ELECTRIC MOTOR

A method for closed-loop control of the velocity of a brushless d.c. motor that supplies a torque (τ) to a rotating mechanical member, including carrying out a control of a FOC (Field-Oriented Control) type () comprising obtaining (), from a triad of stator phase currents (Ia, Ib, Ic) of the motor, a pair of currents (Id, Iq) in a reference system (d, q) of rotation of the motor (), and obtaining from a corresponding pair of voltages (Vq, Vd) in a reference system of rotation of the motor () a triad of phase voltages (Va, Vb, Vc) of the motor (), a quadrature voltage (Vq) of said corresponding pair of voltages (Vq, Vd) being obtained via a closed-loop control procedure () comprising measuring () an orientation of the rotor (θ), said control method () comprising () acquiring a reference angular velocity (ω*) of the motor to be supplied to the control of a FOC type (); according to the invention, said closed-loop control procedure () comprises regulating the orientation of the rotor (θ ) to follow a reference orientation (θ*), which forms an angle of 90° with respect to a direction of a stator magnetic field (B), which rotates with an angular velocity equal to said reference angular velocity (ω*). 1. A method for closed-loop control of the velocity of a brushless d.c. motor , which supplies a torque to a rotating mechanical member , comprising carrying out a control of a FOC (Field-Oriented Control) type comprising:obtaining, from a triad of stator phase currents of the motor, a pair of currents in a reference system of rotation of the motor; andobtaining, from a corresponding pair of voltages in a reference system of rotation of the motor, a triad of phase voltages of the motor,a quadrature voltage of said corresponding pair of voltages being obtained via a closed-loop control procedure comprising measuring an orientation of the rotor,said control method comprising acquiring a reference angular velocity of the motor to be supplied to the control of a FOC type,said ...

CONTROL METHOD FOR REDUCING TORQUE RIPPLE IN AN ELECTRICAL MACHINE

A method of controlling torque ripple in an electrical machine that includes a field winding for creating nominally constant field current using DC current and an armature winding for creating a rotating magnetic field using AC current, calls for superimposing a spatially varying current component on to the DC current of the field winding. Other methods are also disclosed that are suitable for electrical machines that have a winding that is excited with nominal DC current including SRMs, FSMs, and wound-field synchronous motors. 1. A method of controlling torque ripple in an electrical machine , the method comprising:splitting each phase winding of an electrical machine into an AC winding and a DC winding;exciting the AC winding of each phase winding with symmetrically displaced sinusoidal currents; andexciting the DC winding of all phase windings with a varying DC current based on spatially varying magnetic properties of the electrical machine.2. The method of controlling torque ripple in an electrical machine according to claim 1 , further comprising calculating the spatially varying magnetic properties of the electrical machine claim 1 , wherein the spatially varying magnetic properties of the electrical machine are represented as f(δ)=1+k[sin(3δ+γ)+tan(γ)cos(3δ+γ)]+k[sin(6δ+γ)+tan(γ)cos(6δ+γ)] claim 1 , wherein δ is angular degrees (position) claim 1 , kand kare constants claim 1 , and γ is a phase angle.3. The method of controlling torque ripple in an electrical machine according to claim 2 , wherein the varying DC current is represented as i=√{square root over (3)}If(δ) claim 2 , wherein I is a nominal DC current.4. The method of controlling torque ripple in an electrical machine according to claim 1 , wherein exciting the AC winding of each phase winding with sinusoidal currents comprises projecting the phase currents into a reference frame that moves synchronously with the electrical machine rotor.5. The method of controlling torque ripple in an electrical ...

Variable torque angle for electric motor

A method for controlling an electric motor (such as a synchronous reluctance electric motor) is suggested, in which the torque angle in the d-q-reference frame is at least in part and/or at least at times varied depending on at least one working condition of the electric motor.

Apparatus for correcting offset of resolver of environment-friendly vehicle, system including the same, and method thereof

The present disclosure relates to an apparatus for correcting an offset of a resolver of an environment-friendly vehicle. The apparatus includes a resolver offset correcting error determining unit configured to determine whether a resolver offset correction error occurs, by determining whether an engine clutch is released and a torque command of a motor. The apparatus further includes a motor speed change value calculating unit configured to calculate a change value of a speed of the motor when it is determined that the resolver offset correction error occurs and a controller configured to extract a resolver offset change value by using a resolve offset change value table for the change value of the speed of the motor.

ELECTRIC MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING APPARATUS USING THE SAME

An electric motor control device, capable of suppressing a torque ripple even when electrical characteristics on a motor have errors or variations, comprises: a fundamental electric-current instruction generator for outputting d-axis and q-axis fundamental electric-current instructions for outputting fundamental torque from the motor having saliency; a position dependency component generator for outputting a position dependency component(s) of the motor according to its rotational position; an electric current correction instruction calculator for calculating d-axis and q-axis current correction instructions from the d-axis and q-axis fundamental electric-current instructions, and the position dependency component(s); an electric current correction instruction superposition unit for generating d-axis and q-axis current instructions by performing superposition of the d-axis and q-axis current correction instructions on the d-axis and q-axis fundamental electric-current instructions; and an electric current controller for controlling a current to flow through the motor by an inverter, based on the d-axis and q-axis current instructions. 17.-. (canceled)8. An electric motor control device for controlling an electric motor , having saliency , by an inverter of a vector control scheme , the electric motor control device , comprising:a fundamental electric-current instruction generator for outputting a d-axis fundamental electric-current instruction and a q-axis fundamental electric-current instruction for thereby outputting fundamental torque from the electric motor;a position dependency component generator for outputting a position dependency component of the electric motor in accordance with a rotational position of the electric motor;an electric current correction instruction calculator for calculating a d-axis current correction instruction and a q-axis current correction instruction from said d-axis fundamental electric-current instruction and said q-axis ...

Apparatus for controlling inverter

Disclosed herein is an apparatus for controlling an inverter in an inverter system. The apparatus includes: a first determining unit to determine a magnitude, a phase and a frequency of an input voltage to an electric motor in the inverter system; and a second determining unit to determine a restart command voltage for generating an inverter driving voltage larger than a residual voltage in the electric motor using the magnitude of the input voltage determined by the first determining unit, when the inverter system is restarted.

CONTROLLER FOR PERMANENT MAGNET SYNCHRONOUS MOTOR, CONTROL METHOD, AND IMAGE FORMING APPARATUS

A method for controlling a permanent magnet synchronous motor having a rotor using a permanent magnet, the rotor rotating by a rotating magnetic field caused by a current flowing through an armature is provided. The method includes: presuming, based on a target speed and an estimated speed that is an estimated value of a rotational speed of the rotor, whether or not a step-out occurs; correcting, when it is presumed that a step-out occurs, an estimated angle that is an estimated value of a position of magnetic poles of the rotor; and controlling, based on a post-correction estimated angle that is the estimated angle after the correction, a current flowing through the armature to cause the rotating magnetic field rotating at the target speed. 1. A controller for a permanent magnet synchronous motor having a rotor using a permanent magnet , the rotor rotating by a rotating magnetic field caused by a current flowing through an armature , the controller comprising:a drive portion configured to feed a current to the armature to drive the rotor;a speed estimating portion configured to estimate a rotational speed of the rotor based on the current flowing through the armature;a magnetic pole position estimating portion configured to estimate a position of magnetic poles of the rotor based on an estimated speed that is the rotational speed estimated;a control unit configured to control, based on an estimated angle that is an estimated value of the position of magnetic poles outputted by the magnetic pole position estimating portion, the drive portion to cause the rotating magnetic field rotating at a target speed indicated in an inputted speed command;a step-out presuming portion configured to presume, based on the target speed and the estimated speed, whether or not a step-out occurs; anda correction portion configured to correct the estimated angle when the step-out presuming portion presumes that a step-out occurs; whereinwhen the correction portion corrects the estimated ...

Motor control device

A motor control device including: an operation control part that generates a torque command based on an operation command, and controls a rotational position and/or rotational speed of the spindle; a current control part that generates an excitation current command to control secondary magnetic flux of the induction motor, and a torque current command to control torque of the induction motor based on the torque command; a change detection part that detects a change in operation command requiring increasing the secondary magnetic flux of the induction motor; a magnetic flux amplification part that performs magnetic flux amplification to temporarily increase the excitation current command or a magnetic flux command in the current control part, in a case of a change in the operation command being detected; and a gain change part that changes gain of the operation control part when performing magnetic flux amplification.

Systems, methods and computer-readable mediums for detecting position sensor faults

At least one example embodiment discloses a system including a memory storing instructions and at least one controller configured to execute the instructions to cause the system to obtain a measured speed of an electric machine and a measured position of the electric machine based on output from a sensor, select an observer based on a speed value, obtain an estimated speed of the electric machine and an estimated position of the electric machine using the selected observer, determine a control output based on the measured speed and the measured position, the control output being the measured speed and the measured position or the estimated speed and the estimated position and control the electric machine using the control output.

Motor control device and motor control method

A motor control device includes processing circuitry configured to calculate a current command value corresponding to torque that should be generated by a motor, divide the calculated current command value into individual current command values for coil groups, control power feeding to the coil groups independently for each of the coil groups based on a corresponding one of the individual current command values, set, for each one of the coil groups, an upper limit value of a corresponding one of the individual current command values and, when the individual current command value for any one of the coil groups is limited to a value that is smaller than a corresponding one of the upper limit values, supplement an amount limited in the individual current command value by increasing the individual current command value for at least a remaining one of the coil groups.

METHOD AND DEVICE FOR CONTROLLING AN INVERTER

The invention relates to a method () for controlling an inverter () using space-vector pulse width modulation, in particular to control an electric machine (), said inverter () being equipped with a plurality of controllable switches (S) and being designed to provide a polyphase electric current (IU, IV, IW), in particular to supply multiphase electric current to an electric machine (). In said method, a reference phase angle (alpha_R) is predefined, and the inverter () is controlled in such a way that a plurality of different successive switching states (V-V) is established for the switches (S) in order to provide the electric current (IU, IV, IW) in the form of a current space vector (I*). The inverter () is controlled in such a way that the current space vector (I*) is provided at a phase angle (alpha_I) which differs from the reference phase angle (alpha_R), a difference (delta_I) of the phase angle (alpha_I) from the reference phase angle (alpha_R) being determined according to a power loss (PA, PB, PC) and/or a temperature (TA, TB, TC) of at least one of the switches (S). 1. A method for operating an inverter by means of space vector modulation , wherein the inverter includes a plurality of controllable switches and is designed to provide a polyphase electric current , wherein a reference phase angle is predefined , the method comprising: 'a plurality of different consecutive switching states of the switches is configured, in order to provide the electric current in the form of a current space vector, and', 'controlling the inverter so that'}the current space vector has a phase angle which deviates from the reference phase angle, wherein a deviation of the phase angle from the reference phase angle is determined as a function of a power dissipation, a temperature, or both power dissipation and temperature of at least one of the switches (S).2. The method as claimed in claim 1 , wherein the power dissipation and/or the temperature of two or three switches claim ...

Magnet flux amount estimation device, abnormal demagnetize determination device, synchronous motor driving device, and electric motor car

According to one embodiment, a magnet flux amount estimation device includes a magnetic pole position detector configured to detect a magnetic pole position of a permanent magnet synchronous motor including a permanent magnet within a rotor; an inductance-equivalent value determination module configured to determine an inductance-equivalent value of a d-axis corresponding to a determined magnetic pole direction; and a magnet flux amount estimator configured to calculate an estimation value of a magnet flux amount of the permanent magnet, based on the inductance-equivalent value.

Power converter

In a power converter, vibration and noise of a motor due to pulsation of a direct current link voltage are reduced. An inverter circuit is provided, which is configured to convert a direct current link voltage having a pulsating component to an alternating current to output the alternating current to a permanent magnet synchronous motor. A controller is provided, which is configured to control the inverter circuit by vector control and which, in a control state in which fundamental voltage vectors do not include a zero vector (voltage vector for which a motor terminal voltage is zero), performs such control that the phase of a resultant voltage vector of a d-axis voltage vector and a q-axis voltage vector of the permanent magnet synchronous motor varies depending on pulsation.

CONTROL DEVICE FOR PERMANENT MAGNET TYPE ROTATING ELECTRICAL MACHINE

In order to reduce deviation of correction amount when calculating a magnetic pole position correction amount of a permanent magnet type rotating electrical machine, and perform magnetic pole position correction with high accuracy, in state where the permanent magnet type rotating electrical machine is rotated, a d-axis current command value and a q-axis current command value in dg vector control are kept substantially zero, an actual d-axis voltage and an actual q-axis voltage are calculated from a midpoint potential detected from a midpoint potential detection unit, a magnetic pole position correction amount is calculated based on a predetermined arithmetic expression from the actual d-axis voltage and the actual q-axis voltage, and magnetic pole position origin correction is performed based on the magnetic pole position correction amount. 1. A control device for a permanent magnet type rotating electrical machine , comprising:an inverter connected between a DC power supply and the permanent magnet type rotating electrical machine and for converting a DC voltage output from the DC power supply into an AC voltage;an inverter control device for controlling driving of the inverter;a magnetic pole position detector for detecting a magnetic pole position of the permanent magnet type rotating electrical machine; anda midpoint potential detector for detecting a midpoint potential of the inverter, whereinin a state where the permanent magnet type rotating electrical machine is rotated, a d-axis current command value and a q-axis current command value in dq vector control are kept substantially zero, an actual d-axis voltage and an actual q-axis voltage are calculated from the midpoint potential detected from the midpoint potential detector, a magnetic pole position correction amount is calculated based on a predetermined arithmetic expression from the actual d-axis voltage and the actual q-axis voltage, and magnetic pole position origin correction is performed based on ...

Constant torque control method for permanent magnet synchronous motor

A constant torque control method for a permanent magnet synchronous motor. The method includes: 1) starting a motor; setting a torque T of the motor; calculating a given current iq_limit on a q-axis based on the torque T; setting a target current iq_A on the q-axis to be equal to the given current iq_limit; and allowing the motor to operate in a constant torque control mode by a current-based proportional integral (PI) controller on the q-axis; 2) presetting a reference speed Vref1 of the motor; measuring a real-time speed V of the motor; when the real-time speed V is less than the reference speed Vref1, increasing an extra current delta_iq to the given current iq_limit to intervene the real-time speed V of the motor; and 3) measuring the real-time speed V of the motor; and calculating a speed difference Err=V−Vref2.

Motor control apparatus and electric power steering system

In an apparatus, an execution determiner determines, for each of sequential first and second motor control cycles, whether to execute a voltage correction task for a voltage command, and obtains, for each of the first and second motor control cycles, a voltage correction as a function of a fundamental voltage correction and the determination result. A voltage corrector corrects, for each of the first and second motor control cycles, the voltage command based on the voltage correction. A correction voltage feedback unit feeds back a value of the voltage correction calculated at the first motor control cycle to a voltage command calculator. The voltage command calculator calculates a value of the voltage command for the second motor control cycle based on the value of the voltage correction fed back from the correction voltage feedback unit in addition to a value of the motor current parameter and a predetermined current command.

ELECTRIC POWER STEERING APPARATUS

An electric power steering apparatus of vector control system that calculates steering assist command values of dq axes based on at least a steering torque, calculates dq-axes current command values from the steering assist command values, converts the dq-axes current command values into 3-phase duty command values, driving-controls a 3-phase brushless motor by an inverter of a PWM control, and applies an assist torque to a steering system of a vehicle, wherein the electric power steering apparatus has plural dead time compensating functions of which efficiencies to respectively perform a dead time compensation of the inverter are different each other, and performs the dead time compensation by gradually shifting from one of the plural dead time compensating functions to an another dead time compensating function while mixing the plural dead time compensating functions. 110-. (canceled)11. An electric power steering apparatus of a vector control system that calculates steering assist command values of dq-axes based on at least a steering torque , calculates dq-axes current command values from said steering assist command values , converts said dq-axes current command values into 3-phase duty command values , driving-controls a 3-phase brushless motor by an inverter of a pulse width modulation (PWM) control , and applies an assist torque to a steering system of a vehicle , wherein said dead time compensating function A is a compensation function based on motor terminal voltages and has an effect in a low speed steering maneuver, and said dead time compensating function B is a compensation function based on a motor rotational angle and has an effect in a low speed steering maneuver and a middle speed steering maneuver, and', 'wherein said dead time compensation is performed by gradually switching from one of said dead time compensating functions A and B to other dead time compensating function while mixing said dead time compensating functions A and B., 'wherein said ...

MOTOR CONTROL DEVICE, ELECTRICALLY DRIVEN ACTUATOR PRODUCT, AND ELECTRICALLY DRIVEN POWER STEERING DEVICE

To limit d-axis current to an arbitrary value while avoiding duty saturation of a motor. A motor control device including: a voltage command value calculation unit () configured to calculate a voltage command value of voltage applied to a motor (), based on a q-axis current command value and a d-axis current command value; a driving circuit () configured to output driving power to the motor (), based on the voltage command value; a d-axis current command value calculation unit () configured to calculate the d-axis current command value limiting the voltage command value to a maximum voltage applicable to the driving circuit or less by field-weakening control; a d-axis current command value limitation unit () configured to limit the d-axis current command value calculated by the d-axis current command value calculation unit (); and a q-axis current command value limitation unit () configured to limit the q-axis current command value lest the voltage command value exceed the maximum voltage due to limitation of the d-axis current command value by the d-axis current command value limitation unit (). 1. A motor control device comprising:a voltage command value calculation unit configured to calculate a voltage command value of voltage applied to a motor, based on a q-axis current command value and a d-axis current command value;a driving circuit configured to output driving power to the motor, based on the voltage command value;a d-axis current command value calculation unit configured to calculate the d-axis current command value limiting the voltage command value to a maximum voltage applicable to the driving circuit or less by field-weakening control;a q-axis current command value calculation unit configured to calculate the q-axis current command value;a d-axis current command value limitation unit configured to limit the d-axis current command value calculated by the d-axis current command value calculation unit;a q-axis current command value limitation unit ...

THYRISTOR STARTER

A thyristor starter accelerates a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. A second controller controls the firing phase of a thyristor in a converter such that DC output current of the converter matches a current command value, based on a detection signal of a position detector. In the first mode, the current command value is set such that the current value is higher as the rotation speed of the synchronous machine is higher. 1. A thyristor starter for starting a synchronous machine , comprising:a converter that converts AC power into DC power;a DC reactor that smoothes the DC power;an inverter that converts the DC power applied from the converter through the DC reactor into AC power with a variable frequency and supplys the AC power to the synchronous machine;a position detector that detects a rotor position of the synchronous machine;a first controller that controls a firing phase of a thyristor in the inverter, based on a detection signal of the position detector; anda second controller that controls a firing phase of a thyristor in the converter such that DC output current of the converter matches a current command value, based on a detection signal of the position detector, whereinthe thyristor starter accelerates the synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode and a second mode, the first mode of performing commutation of the inverter by intermittently setting the DC output current to zero, the second mode performing commutation of the inverter by induced voltage of the synchronous machine, andin the first mode, the current command value is set such that a current value is larger as rotation speed of the synchronous machine is ...

Software-Controlled Electronic Circuit for Switching Power to a Three-Phase Motor

The circuit for controlling a rotating three-phase motor of the type having three interconnected motor coils each corresponding to one of three phases employs a plurality of switching circuit components, each connected to the motor to supply current to one of the coils. A signal generator circuit produces in synchronism with the rotation of the motor a variable duty cycle pulse-width modulated signal for each of the switching circuit components. A logic gating circuit is coupled to the signal generator circuit and to the switching components. The logic gating circuit is operative to cause the switching circuit components to selectively place pairs of motor coils in current conducting states such that when the variable duty cycle pulse-width modulated signals are each concurrently in the same logical on-off state, the logic gating circuit supplies a logical off state to each of the switching circuit components. 1. A circuit for controlling a rotating three-phase motor of the type having three interconnected motor coils each corresponding to one of three phases , comprising:a plurality of switching circuit components and each connected to the motor to supply current to one of said coils;a signal generator circuit producing in synchronism with the rotation of the motor a variable duty cycle pulse-width modulated signal for each of the switching circuit components; anda logic gating circuit coupled to the signal generator circuit and to the switching components and being operative to cause the switching circuit components to selectively place pairs of motor coils in current conducting states such that when the variable duty cycle pulse-width modulated signals are each concurrently in the same logical on-off state, the logic gating circuit supplies a logical off state to each of the switching circuit components.2. The circuit of wherein each of the plurality of switching circuit components comprises a pair of transistors claim 1 , one coupled to supply a direct current ...

LINEAR MOTOR, LINEAR MOTOR CONTROL APPARATUS, AND LINEAR MOTOR CONTROL METHOD

A linear motor control apparatus for controlling at least one of torque, speed and position of a linear motor includes circuitry that receives at least one of a magnetic pole position value, torque command signal, and speed command signal, and imparts a high-frequency voltage to at least one of a d-axis and a q-axis and impart a load current to the q-axis based on the at least one of the magnetic pole position value, torque command signal, and speed command signal. The d-axis is an axis extending in a central direction of a stator tooth of a stator, and the q-axis is an axis extending in a direction offset 90 degrees from the central direction in an electrical angle. 1. A linear motor control apparatus for controlling at least one of torque , speed and position of a linear motor , comprising:circuitry configured toreceive at least one of a magnetic pole position value, torque command signal, and speed command signal, andimpart a high-frequency voltage to at least one of a d-axis and a q-axis and impart a load current to the q-axis based on the at least one of the magnetic pole position value, torque command signal, and speed command signal,wherein the d-axis is an axis extending in a central direction of a stator tooth of a stator, and the q-axis is an axis extending in a direction offset 90 degrees from the central direction in an electrical angle.2. The linear motor control apparatus according to claim 1 , wherein the linear motor comprises the stator claim 1 , and a mover comprising a mover iron core claim 1 , a plurality of teeth formed in the mover iron core such that the plurality of teeth is protruding toward the stator claim 1 , a plurality of field magnets positioned in the plurality of teeth claim 1 , respectively claim 1 , and a plurality of armature windings wound around the plurality of teeth respectively such that each of the armature windings is housed in a slot formed between adjoining teeth of the plurality of teeth claim 1 , and the plurality of ...

METHOD FOR CONTROLLING A POWER TRAIN AND CORRESPONDING CONTROL SYSTEM

A system and method for controlling a power train of a motor vehicle having an electric motor includes regulating the currents in the rotor and stator of the electric motor so that they reach required current values using control signals of the electric motor. The currents to be regulated and the control signals being expressed in a rotating reference frame including a plurality of axes. The control signals result from a transformation including a change of variable allowing the dynamic decoupling of the regulation along each of the axes. Regulating each axis includes an application to the current to be regulated of two different linear operators as a function of the value of the current to be regulated of that axis with respect to its required value, the result of the application of the two linear operators having to be substantially equal to the control signal of that axis. 112-. (canceled)13: A method for controlling a power train equipping a motor vehicle and comprising an electric motor provided with a rotor and a stator , comprising:regulating the currents in the rotor and in the stator so that they reach required current values using control signals of the electric motor, said currents to be regulated and said control signals being expressed in a rotating reference frame comprising a plurality of axes, said control signals resulting from a transformation comprising a change of variable allowing the dynamic decoupling of the regulation along each of the axes of said plurality of axes,wherein said regulating comprises, for each of the axes of said plurality of axes, an application, to the current to be regulated of that axis, of two different linear operators as a function of the value of the current to be regulated of that axis with respect to its required value, the result of the application of the two linear operators having to be substantially equal to the control signal of that axis.14: The method as claimed in claim 13 , wherein claim 13 , for each of the ...

METHOD AND AN APPARATUS FOR CONTROLLING AN ELECTRICAL MACHINE WITH TWO OR MORE MULTIPHASE STATOR WINDINGS

An apparatus comprises a processing system () configured to produce voltage control signals for controlling an electrical machine () comprising two or more multiphase stator windings. The processing system is configured to produce the voltage control signals on the basis of rotation-converted stator currents expressed in a coordinate system bound to a rotor of the electrical machine and on the basis of a model of the electrical machine modeling at least inductances of the multiphase stator windings and mutual inductances between the multiphase stator windings. The processing system is configured to convert phase currents of the multiphase stator windings into the rotation-converted stator currents with a conversion rule corresponding to a form of the model of the electrical machine where each of the stator flux-linkages of the model is dependent on only one of the rotation-converted stator currents in spite of the mutual inductances between the multiphase stator windings. 122-. (canceled)23. A method for controlling an electrical machine comprising two multiphase stator windings , the method comprising:controlling power stages connected to the multiphase stator windings on the basis of four rotation-converted stator currents expressed in a coordinate system bound to a rotor of the electrical machine and on the basis of a model of the electrical machine modeling at least inductances of the two multiphase stator windings and mutual inductances between the two multiphase stator windings, andconverting stator phase currents of the two multiphase stator windings into the four rotation-converted stator currents with a conversion rule corresponding to a form of the model of the electrical machine where each of stator flux-linkages of the model is dependent on only one of the rotation-converted stator currents when inductance parameters of the model are unaltered,{'sub': d', 'd', 'q', 'q', 'd', 'd', 'q', 'q', 'd', 'd', 'q', 'q, 'wherein inductance coefficients between the ...

CONTROL DEVICE AND CONTROL METHOD FOR LINEAR MOTOR

A control device for linear motor where a range in which the current magnetic pole position of the linear motor exists is refined using the pulse energization with a suppressed amount of movement of the mover, direct current excitation is performed while changing the refined estimated magnetic pole position by a second amount of change smaller than a first amount of change used for refinement of the estimated magnetic pole position during pulse energization, and it is determined that the estimated magnetic pole position matches the current magnetic pole position of the linear motor when the amount of movement of the mover acquired each time the estimated magnetic pole position is changed matches the amount of movement of the second amount of change. 1. A control device for linear motor that controls a linear motor , the control device comprising:a section estimation unit that estimates which of a plurality of sections obtained by dividing magnetic pole positions from 0° to 360° includes a current magnetic pole position of the linear motor based on a movement direction of a mover by a plurality of pulse energizations;a magnetic pole position refinement unit that performs pulse energization while changing the estimated magnetic pole position by a first predetermined amount of change from any one of a minimum value and a maximum value of the section estimated by the section estimation unit to the other, and approximates the estimated magnetic pole position to the current magnetic pole position based on the movement of the mover when the pulse energization is performed; anda magnetic pole position detection unit that performs direct current excitation while changing the estimated magnetic pole position by a second amount of change smaller than the first amount of change and performs an acquisition of an amount of movement of the mover when the estimated magnetic pole position is changed by the second amount of change, after direct current excitation is performed at the ...

Motor control device

Provided is a motor control device that can detect an abnormality of a motor at an early stage. A motor control device includes: a control unit that calculates a voltage command value based on an input current command value and controls drive of the motor by using the calculated voltage command value; a virtual motor unit that simulates the value of a current flowing through the motor, based on the voltage command value calculated by the control unit and a plurality of parameters related to specifications of the motor; and a determination unit that determines whether or not the motor is in an abnormal state by comparing the current command value input to the control unit and the current value simulated by the virtual motor unit.

Method for driving an actuator of an hvac system

A method for driving an actuator of an HVAC system is provided, and which comprises the steps of: a] determining an actuation command to the actuator; and b] ramping a drive power to the actuator between a steady-state-velocity drive power and a zero-velocity drive power to effect a required acceleration or deceleration to a movable member of the HAVC system without or substantially without over-powering of the actuator. An HVAC system is also provided. The HVAC system implementing the above method is not only capable of reducing the noise produced by an HVAC system, but is also capable of reducing an over-powering of the actuator when there is a low load on the system.

Synchronous machine control apparatus

A synchronous machine control apparatus for correcting a rotor position error that is a difference between a rotor position of a synchronous machine and a rotor position detected by a position detection unit is provided with a current control device for performing control in such a way that respective current command values and respective current detection values in a generation direction (γ axis) of an armature interlinked magnetic flux and in a direction perpendicular (δ axis) to the generation direction of the armature interlinked magnetic flux coincide with each other and with a magnetic flux calculation device for calculating a phase of an armature interlinked magnetic flux, based on an armature current detection value of the synchronous machine and an armature voltage command value therefor; the rotor position error is corrected based on the γδ-axis current command values and a phase of the armature interlinked magnetic flux.

INVERTER CONTROL METHOD AND MOTOR CONTROL DEVICE

An inverter control method is a method for controlling an inverter that outputs an application voltage, which is a voltage to be applied to a motor that drives a load by using rotation of a shaft. The method includes: causing the inverter to output the application voltage having an amplitude smaller than a first maximum and causing the motor to rotate at a first speed and drive the load which is predetermined; and causing the inverter to output the application voltage having an amplitude of a second maximum and causing the motor to rotate at a second speed and drive the predetermined load. The first maximum is a possible maximum value of an amplitude of the application voltage when the motor drives the predetermined load at the first speed. The first speed is a maximum of a speed of rotation of the motor when the motor drives the predetermined load. The second maximum is a possible maximum value of the amplitude of the application voltage when the motor drives the predetermined load at the second speed. The second speed is lower than the first speed.

VARIABLE MAGNETIZATION MACHINE CONTROLLER

A variable magnetization machine control system comprising a controller configured to generate a reversely rotating d-axis/q-axis current vector trajectory during a change in a magnetization state of a variable magnetization machine to drive the variable magnetization machine at a predetermined speed while maintaining the driving voltage below a predetermined maximum magnitude. 1. A variable magnetization machine control system comprising:a controller configured to determine a beginning of a change in a magnetization state of a variable magnetization machine, generate a reversely rotating d-axis/q-axis current vector trajectory while the change in the magnetization state of the variable magnetization machine is occurring to drive the variable magnetization machine at a predetermined speed while maintaining the driving voltage below a predetermined maximum magnitude, determine an ending of the change in the magnetization state, and discontinue generating the reversely rotating d-axis/q-axis current vector trajectory upon determining the ending of the change in the magnetization state.2. The variable magnetization machine control system according to claim 1 , whereinthe reversely rotating d-axis/q-axis current vector trajectory has an elliptical trajectory.3. The variable magnetization machine control system according to claim 2 , wherein{'sub': q', 'd', 'q', 'd, 'a radius of the elliptical trajectory has a d-axis to q-axis ratio corresponding to a ratio L/Lwhere Lrepresents a q-axis inductance and Lrepresents a d-axis inductance.'}4. The variable magnetization machine control system according to claim 2 , whereinthe controller is configured to establish a reverse rotating frequency of the variable magnetization machine equal to an electric fundamental frequency of the variable magnetization machine.5. The variable magnetization machine control system according to claim 2 , whereinthe controller is configured to generate a second reversely rotating d-axis/q-axis ...

Polarity detection for power conversion

A power conversion apparatus includes circuitry to: generate a first command to provide a first electrical output to a motor; receive a first electrical response to the first electrical output; estimate a position of a magnetic pole of the motor based on the first electrical response; set a pulse provide condition in accordance with the estimated position of the magnetic pole; generate a second command to provide a positive electrical pulse output and a negative electrical pulse output to the motor in accordance with the pulse provide condition; receive a positive electrical response to the positive electrical pulse output and a negative electrical response to the negative electrical pulse output; calculate a magnitude difference between the positive electrical response and the negative electrical response; change the pulse provide condition to generate a modified second command when the magnitude difference is smaller than a predetermined difference level; and estimate a polarity of the magnetic pole based on the magnitude difference corresponding to the modified second command when the magnitude difference is larger than the predetermined difference level.

Electric power control method and electric power control device

An electric power control method comprising: a current measuring step; a command value calculating step; an operating step; a determining step of determining whether to change an operation period within which the operating step is performed so as to be longer than one cycle of the carrier wave or not; a first reducing step of reducing the switching operation of the switching elements in a first half cycle of the carrier wave starting from a start timing of the operation period after the change during which the carrier wave monotonously changes; a comparing step of changing a slope of the carrier wave in an intermediate period between the first half cycle of the carrier wave and a last half cycle of the carrier wave in the operation period after the change to compare the carrier wave with the duty command value in the magnitude, the comparing step performing the switching operation of the switching elements according to a result of the comparison; and a second reducing step of reducing the switching operation of the switching elements in the last half cycle of the carrier wave.

PERMANENT MAGNET MOTOR CONTROL

A three-phase permanent magnet motor is controlled by generating two-phase control signals. A rotation speed value is generated representing a rotation speed of the permanent magnet motor based on a q-current reference value and a q-current feedback value, the q-current reference value and the q-current feedback value corresponding to a q-phase winding. A d-phase voltage change value is generated based on a d-current reference value and a d-current feedback value, the d-current reference value and the d-current feedback value corresponding to the d-phase winding. A first d-phase voltage value is generated based on the rotation speed value, the d-phase voltage change value, the d-current reference value and the q-current reference value. A first q-phase voltage value is generated based on the rotation speed value, the q-current reference value and the d-current reference value. 1. A method of controlling a three-phase permanent magnet motor by generating two-phase control signals , the two phases defined as a d-phase and a q-phase , the d-phase and q-phase having a d-phase winding and a q-phase winding , respectively , separated by ninety (90) degrees , comprising:generating a rotation speed value representing a rotation speed of the permanent magnet motor based on a q-current reference value and a q-current feedback value, the q-current reference value and the q-current feedback value corresponding to the q-phase winding;generating a d-phase voltage change value based on a d-current reference value and a d-current feedback value, the d-current reference value and the d-current feedback value corresponding to the d-phase winding;generating a first d-phase voltage value based on the rotation speed value, the d-phase voltage change value, the d-current reference value and the q-current reference value; andgenerating a first q-phase voltage value based on the rotation speed value, the q-current reference value and the d-current reference value.2. The method of claim 1 , ...

Methods and apparatuses for compensating for friction torques of permanent magnet synchronous motors

A method of compensating for a friction torque of a permanent magnet synchronous motor may include: receiving input of a motor current and a rotor speed of the permanent magnet synchronous motor; estimating a motor torque based on the input motor current; acquiring a first friction torque corresponding to the input rotor speed and the estimated motor torque by using a lookup table of friction torques; compensating for a second friction torque of the permanent magnet synchronous motor based on the first friction torque, wherein the compensating is in response to a first torque command input to control driving of the permanent magnet synchronous motor and outputs a second torque command that compensates for the second friction torque; and/or controlling the driving of the permanent magnet synchronous motor based on the second torque command.

Rotating machine control device and electric power steering control device

A control unit includes: control command generation means for generating a first control command and a second control command that specifies currents to flow through a first winding set and second winding set respectively; voltage calculation means for calculating a first voltage command from the first control command and calculating a second voltage command from the second control command; and first voltage application means and second voltage application means for applying voltages to the first winding set and the second winding set of a rotating machine on the basis of the first voltage command and the second voltage command, wherein discharge control for electric charge of a smoothing capacitor is performed while torque generated by current flowing from the smoothing capacitor to the first winding set and torque generated by current flowing from the capacitor to the second winding set are cancelled out with each other.

CONTROL DEVICE FOR PERMANENT MAGNET-TYPE ROTATING ELECTRICAL MACHINE

Provided is a control device for a permanent magnet-type rotating electrical machine (), which includes a current coordinate transformation unit () configured to output a d-axis current and a q-axis current by coordinate transformation of three-phase AC currents respectively detected by current detection units (), a current correction direction calculation unit () configured to calculate a current correction direction through use of the d-axis current and the q-axis current, and a current correction amount addition unit () configured to correct a d-axis current command and a q-axis current command based on the current correction direction. In this manner, an induced voltage is converged to lie within a maximum voltage circle in accordance with a power supply voltage. 1. A control device for a permanent magnet-type rotating electrical machine , a rotor including a permanent magnet; and', 'a stator including coils configured to generate a rotating magnetic field for rotating the rotor,, 'wherein the permanent magnet-type rotating electrical machine includes wherein the inverter receives AC voltage commands as input and applies AC voltages to the permanent magnet-type rotating electrical machine based on the AC voltage commands;', 'wherein the magnetic-pole position detector detects a magnetic-pole position of the rotor;', 'wherein the current detectors respectively detect AC currents flowing between the inverter and the permanent magnet-type rotating electrical machine;', 'wherein the processor:', 'transforms the AC currents respectively detected by the current detectors into a d-axis current and a q-axis current with a magnetic field direction at the magnetic-pole position being defined as a d-axis and a direction orthogonal to the d-axis being defined as a q-axis;', 'receives a d-axis current command and a q-axis current command as input from outside, and performs a correction by correcting the d-axis current command and the q-axis current command to output a ...

POSITIONING DEVICE FOR PRODUCING A ROTATIONAL POSITION SIGNAL AND AN EXCITATION DEVICE FOR PRODUCTING AN EXCITATION SIGNAL FOR A RESOLVER

A positioning device () for producing a position signal indicative of a rotational position of a resolver is presented. The positioning device comprises a signal interface () for receiving alternating signals (V_cos, V_sin) from the resolver and a processing system () for generating the position signal based on position-dependent amplitudes of the alternating signals and on polarity information indicative of a polarity of an excitation signal (V_exc) of the resolver. The processing system is configured to recognize a polarity indicator, such as a change of frequency or phase, on a waveform of one or both of the alternating signals and to determine the polarity information based on the recognized polarity indicator. Thus, the polarity information related to the excitation signal is included in the alternating signals and therefore there is no need for a separate signaling channel for transferring the polarity information to the positioning device.

METHOD AND LONG STATOR LINEAR MOTOR FOR TRANSFERRING A TRANSPORT UNIT AT A TRANSFER POSITION

Method for transferring a transport unit of a long stator linear motor at a transfer position from a first transport section to a second transport section. On each side of the transport unit, excitation magnets are arranged to interact with driving coils, and on both sides of the transport unit, excitation-magnetic lateral forces are acting on the transport unit by an interaction of the excitation magnets with ferromagnetic components of the guide structure. Method includes supplying on at least one side of the transport unit a stator current n a driving coil to generate a lateral force-forming electromagnetic force that acts on the transport unit, so that a resulting lateral force, as a sum of the acting excitation-magnetic lateral force and of the lateral force-forming electromagnetic force, on each side of the transport unit is different to produce a steering effect on the transport unit at the transfer position. 1. A method for transferring a transport unit of a long stator linear motor at a transfer position from a first transport section , having a number of driving coils arranged on a guide structure one behind the other in a direction of movement of the transport unit in a region of the transfer position , to a second transport section , having a number of driving coils arranged on a guide stricture one behind the other in a direction of movement of the transport unit in a region of the transfer position , wherein , on each side of the transport unit , excitation magnets are arranged to interact with driving coils in a region of the transport unit , wherein on both sides of the transport unit excitation-magnetic lateral forces are acting on the transport unit by an interaction of the excitation magnets with ferromagnetic components of the guide structure , comprising:supplying on at least one side of the transport unit a stator current in at least one driving coil in the region of the transfer position that generates a lateral force-forming electromagnetic ...

STRAY MAGNETIC FIELD COMPENSATION FOR A ROTOR POSITION SENSOR

A method may be used to error compensate a measurement of an electric motor's rotor position in a power steering system of a motor vehicle. The electric motor generates torque for assisting steering of the motor vehicle, and stray magnetic fields of motor currents affect the measurement of the rotor position with a magneto-resistive rotor position sensor. The method may involve calculating at least two compensation values based on a current vector, rotor position, and hardware dependent parameters. The at least two compensation values account for errors in the rotor position measurement due to stray magnetic fields of motor currents. The method may also involve calculating a compensated rotor position signal by subtracting the at least two compensation values of the measured rotor position, as well as transferring the compensated rotor position signal as part of a feed-back loop to a target motor torque determination in the motor control. 19.-. (canceled)10. A method for error compensating a measurement of a position of a rotor of an electric motor in a power steering system of a motor vehicle , wherein the electric motor generates torque for assisting steering of the motor vehicle , wherein stray magnetic fields of electric motor currents affect the measurement of the rotor position by a rotor position sensor , the method comprising:measuring the rotor position with the rotor position sensor;determining a target motor torque based on signals representative of at least a vehicle velocity and a torque applied to a steering wheel;transferring the target motor torque into target voltages;transforming the target voltages into a current vector in a rotating reference frame fixed to the rotor of the electric motor;transforming the current vector into motor currents expressed in a coordinate system fixed to a stator of the electric motor;calculating at least two compensation values based on the current vector or a current vector transformed from the motor currents into a ...

Unknown

The invention concerns a drive unit for an adjustment system (), in particular in a motor vehicle, with an adjustable element () moved by an electric motor, comprising: 112. A drive unit for an adjustment system () , with an adjustable element () moved by an electric motor , comprising:{'b': '4', 'a drive motor () operated by an electromagnet,'}{'b': 9', '42', '4, 'a magnetic field sensor () which is arranged on a pole pot () or a housing of the drive motor () in order to provide an electrical sensor signal dependent on the magnetic field,'}{'b': 7', '44', '4, 'a control unit () which is configured to detect a magnetic field which varies on rotation of a rotor () of the drive motor ().'}294244. The drive unit according to claim 1 , wherein the magnetic field sensor () is arranged on an outside of the pole pot () or housing and radially opposite the rotor ().394244. The drive unit according to claim 1 , wherein the magnetic field sensor () is arranged on an inside of the pole pot () or housing and radially opposite the rotor ().442429a. The drive unit according to claim 1 , wherein the pole pot () has a flattened region () on which the magnetic field sensor () is arranged.544142941. A drive unit according to claim 1 , wherein the drive motor () has stator magnets () arranged on an inside of a casing of the pole pot () claim 1 , wherein the magnetic field sensor () is arranged on a region of the pole pot which is defined by a space between two adjacent stator magnets ().642. The drive unit according to claim 1 , wherein the pole pot () is formed from a soft magnetic material.74414242942. The drive unit according to claim 6 , wherein the drive motor () has stator magnets () arranged on an inside of a casing of the pole pot () claim 6 , wherein this at least one region has a magnetic saturation due to a magnetic circuit through the pole pot () claim 6 , wherein the magnetic field sensor () is arranged on the pole pot () in the region of the magnetic saturation.844. The ...

METHOD FOR DETERMINING THE ANGULAR POSITION OF THE ROTOR OF AN INVERTER-FED SYNCHRONOUS MOTOR, AND AN APPARATUS FOR CARRYING OUT THE METHOD

In a method for determining the angular position of the rotor of a synchronous motor fed by an inverter, the inverter is actuated by a signal electronics including a control unit, in particular having a processing unit and a memory, the stator current in particular is acquired with the aid of at least one current-acquisition device, the synchronous motor having a stator winding, which is fed by a three-phase voltage, i.e. stator voltage, which is set by the inverter such that the acquired stator current is controlled to a predefined setpoint stator current by the control unit, a setpoint stator current with a first actuation angle relative to the stator winding is predefined, in particular in the d-direction, the stator flux is determined from the time characteristic of the stator voltage and the acquired values of the stator current, and an angle value, in particular the angular position, is determined from the determined stator flux and a flux-value dependence as a function of a stator current. 114-. (canceled)15. A method for determining an angular position of a rotor of a synchronous motor fed by an inverter , the synchronous motor including a stator winding fed by a three-phase voltage , comprising:actuating the inverter by a signal electronics including a control unit;acquiring a stator current with the aid of at least one current-acquisition device;setting a stator voltage by the inverter to control the acquired stator current, by the control unit, to a predefined sepoint stator current having a predefined first actuation angle relative to the stator winding;determining a stator flux from a time characteristic of the stator voltage and acquired values of the stator current; anddetermining an angle value from the determined stator flux and a flux-value dependence as a function of the stator current.16. The method according to claim 15 , wherein the signal electronics includes a processing unit and a memory.17. The method according to claim 15 , wherein the ...

CURRENT CONVERSION METHOD AND DEVICE, VEHICLE COMPRISING SUCH A DEVICE

A current conversion method for an electrical device. The electrical device includes a three-phase electric motor and two three-phase inverters. Each inverter is controlled by modulation of at least six non-zero space vectors or space vector modulation. The output voltage of each inverter is given by a reference space vector. For each inverter, the method includes modulating the space vectors by a space-vectors activation sequence having at least two switching intervals in which three adjacent space vectors are used. A device to convert current and a vehicle implementing the current conversion method are provided. 18-. (canceled)9. A current conversion method for an electrical device comprising a three-phase motor and two three-phase inverters , each inverter being controlled by a space vector modulation of at least non-zero six space vectors and an output voltage of each inverter being given by a reference space vector , the method comprising , for each inverter , a step of modulating the space vectors by an activation sequence of the space vectors comprising at least two switching intervals in which three adjacent space vectors are implemented.10. The current conversion method according to claim 9 , wherein for each passage from one switching interval to another switching interval for each activation sequence claim 9 , a phase of the three-phase electric motor is kept unchanged and each other phase of the three-phase electric motor switches from a predetermined voltage to an opposite of said predetermined voltage.12. The current conversion method according to claim 11 , further comprising a step of adjusting at least one of the modulation index Maccording to an amplitude of a root of an input signal of the three-phase motor.13. The current conversion method according to claim 9 , further comprising a step of adapting at least one phase angle between phases of the three-phase motor according to an amplitude of a root of the input signal of the three-phase motor.14. ...

Arrangement and Method for Force Compensation in Electrical Machines

An electrical machine () comprises a rotor (), a stator (), a rotor power supply (), at least one sensor () and a rotor magnetization control arrangement (). The rotor has rotor windings () for controlling magnetization of rotor magnetic poles (). The sensor is arranged to measure a parameter associated with a relative force between the stator and the rotor. The rotor magnetization control arrangement is communicationally connected to the sensor for receiving a signal representing the measured parameter. The rotor magnetic poles are divided into at least two groups (). The rotor magnetization control arrangement is arranged for controlling the magnetization of the groups individually by providing a respective individually controllable rotor current. The rotor magnetization control arrangement is arranged to individually control the rotor currents in dependence of the signal representing the measured parameter. A method for controlling such an electrical machine is also disclosed. 123.-. (canceled)24. An electrical machine , comprising:a rotor having rotor windings for controlling magnetization of rotor magnetic poles;a stator, provided around said rotor and arranged for allowing said rotor to rotate relative said stator; anda rotor power supply arranged to supply said rotor windings with current;at least one sensor, arranged to measure a parameter associated with a relative force between a part of said stator or a part mechanically attached to said stator and a part of said rotor or a part mechanically attached to said rotor; anda rotor magnetization control arrangement, communicationally connected to said at least one sensor for receiving a signal representing said measured parameter;said rotor magnetic poles being divided into at least two groups of rotor magnetic poles, each group of rotor magnetic poles having at least one rotor magnetic pole;said rotor magnetization control arrangement being arranged for controlling said magnetization of said at least two ...

PERMANENT-MAGNET-TYPE ROTATING ELECTRICAL MACHINE

Given a first intersection point of the surface of a rotor and a straight line that joins a central point of a permanent magnet on a stator side and a tooth tip section closest to the central point of the permanent magnet on the stator side, a flange is formed outward of an arc having, as the radius thereof, a distance from a second intersection point of the inner peripheral face of the stator and a straight line that joins the rotation axis of the rotor and the first intersection point, up to the tooth tip section. 1. A permanent-magnet-type rotating electrical machine comprising a rotor that forms a magnetic field using permanent magnets , and a stator that opposes the rotor across a gap ,wherein the stator has teeth protruding towards the rotor side, and a core back,the teeth each include a tooth central section around which a winding is wound, a tooth tip section which opposes the rotor and around which no winding is wound, and a flange which is formed between the tooth central section and the tooth tip section and protrudes on both sides in a circumferential direction, andgiven a first intersection point of a surface of the rotor and a straight line that joins a central point of a permanent magnet on the stator side and the tooth tip section closest to the central point of the permanent magnet on the stator side, the flange is formed outward of an arc having, as the radius thereof, a maximum value, for all rotation angles of the rotor, among a distance from a second intersection point of an inner peripheral face of the stator and a straight line that joins a rotation axis of the rotor and the first intersection point, up to the tooth tip section.2. The permanent-magnet-type rotating electrical machine according to claim 1 ,wherein the minimum height of the flange is smaller than ½ the minimum width of the tooth central section.3. The permanent-magnet-type rotating electrical machine according to claim 1 ,wherein the number of poles X of the rotor and the number ...

ELECTRIC POWER STEERING APPARATUS

An electric power steering apparatus that ideally compensates dead time of the inverter without the tuning operation, improves distortion of the current waveform and the responsibility of the current control, and suppresses sound, vibration, the ripple that the low speed steering maneuver is effective. The apparatus converts dq-axes current command values calculated based on at least a steering torque into 3-phase duty command values, controls a 3-phase brushless motor by an inverter of a PWM-control, and applies an assist torque to a steering system of a vehicle, wherein 3-phase detection voltages are estimated based on 3-phase motor terminal voltages, loss voltages due to a dead time of the inverter are estimated from differences between 3-phase correction command voltages calculated from the 3-phase duty command values and the 3-phase detection voltages, and a dead time compensation of the inverter is performed by feeding back dead time compensation values obtained by compensating the loss voltages to the dq-axes current command values.

MOTOR CONTROL DEVICE AND CONTROL METHOD

A motor control method of the present invention is a motor control method for controlling, by a voltage phase control, an applied voltage applied to a motor via an inverter. The control method includes: calculating a phase command value to be used for the voltage phase control by a feedforward control based on a torque command value to the motor; calculating an amplitude command value to be used for the voltage phase control, based on a drive voltage for the inverter; calculating a voltage command value to the motor based on the phase command value and the amplitude command value; and a voltage application step of applying the applied voltage from the inverter to the motor based on the voltage command value. 1. A motor control method for controlling , by a voltage phase control , an applied voltage to be applied to a motor via an inverter , the motor control method comprising:calculating a phase command value to be used for the voltage phase control by a feedforward control based on a torque command value to the motor;calculating an amplitude command value to be used for the voltage phase control, based on a drive voltage for the inverter;calculating a voltage command value to the motor based on the phase command value and the amplitude command value; andapplying the applied voltage from the inverter to the motor based on the voltage command value, wherein generating a first signal proportional to the torque command value, proportional to a rotation speed of the motor, and inversely proportional to the amplitude command value, and', 'calculating the phase command value by use of a function taking the first signal as a variable., 'calculating the phase command value includes,'}2. The motor control method according to claim 1 , wherein generating a second signal proportional to the rotation speed of the motor and inversely proportional to the amplitude command value, and', 'calculating the phase command value based on the first signal and the second signal., ' ...

ANGLE DETECTING DEVICE, MOTOR DRIVE CONTROLLING DEVICE, MOTOR DEVICE AND METHOD OF CONTROLLING AN ANGLE DETECTING DEVICE

An angle detecting device, generating phase information for indicating phases corresponding to rotational positions of a rotor of a motor, comprises an intersection detecting unit, configured to detect timing at which paired sensor signals intersect with each other, and to detect points of intersection; an intersection level detecting unit configured to detect intersection levels that are amplitude levels of the sensor signals, based on the timing at which the respective pairs of the sensor signals intersect with each other; an intersection level adjusting unit configured to adjust the detected intersection levels of the sensor signals to a certain amplitude level, and to output a successively selected one of the adjusted sensor signals as an intersection level adjustment signal; and a phase information detecting unit configured to generate detection results indicative of whether the intersection level adjustment signal is greater than respective threshold levels corresponding to the phases, thereby generating the phase information responsive to the detection results. 110-. (canceled)11. An angle detecting device that is used for controlling a motor by using at least a plurality of sensor signals , each of which has a signal level indicative of a rotational position of a rotor of the motor , comprising:a signal selection unit configured to select a sensor signal from the plurality of sensor signals in every phase section, thereby outputting the selected sensor signal, the phase section being defined by at least one of a magnitude relationship between amplitude levels of the plurality of sensor signals and a magnitude relationship between processed sensor signals respectively obtained by processing the plurality of sensor signals;a level adjusting unit configured to change an amplitude level of the selected sensor signal into a predetermined amplitude level, thereby outputting a level adjustment signal; anda phase information detecting unit configured to output the ...

SYSTEM AND METHOD FOR DETERMINING ROTOR POSITION OFFSET OF AN ELECTRIC MACHINE

A method according to an exemplary aspect of the present disclosure includes, among other things, detecting a position, including a polarity, of a rotor to detect incorrect rotor position offset of an electric machine without generating torque or motion within the electric machine. 1. A method , comprising:detecting a position and a polarity of a rotor of an electric machine without generating torque or motion within the electric machine, wherein the step of detecting includes:sensing an angular position of the rotor with a sensor;determining an alignment and a polarity of a direct axis of the rotor; andcomparing the position and the polarity of the direct axis to the angular position to determine an incorrect rotor position offset.2. The method as recited in claim 1 , wherein the step of detecting includes:applying a voltage; andanalyzing a current response from the electric machine to determine the position, including the polarity, of the rotor.3. The method as recited in claim 2 , wherein the step of detecting includes:applying a first voltage of a first magnitude and a first frequency to the electric machine to produce a first current response;processing a first current response from the electric machine to determine an alignment of the direct axis of the rotor;applying a second voltage of a second magnitude and a second frequency to the electric machine; andanalyzing a second current response from the electric machine to determine the polarity of the direct axis of the rotor.4. The method as recited in claim 3 , wherein the first magnitude is a different magnitude from the second magnitude.5. The method as recited in claim 3 , wherein the first frequency is a different frequency from the second frequency.6. The method as recited in claim 3 , wherein the step of processing includes processing a negative sequence current response from the electric machine.7. The method as recited in claim 3 , wherein the first voltage is a sinusoidal rotating voltage and the ...

NORMALIZATION OF MOTOR PHASE MEASUREMENTS

A method of normalizing phase measurements for a motor using a normalizing phase measurements (NPM) algorithm that a processor implements to cause a motor controller coupled to stator terminals of the phases to execute forcing a set of input current or voltage vectors (set of input vectors) including repeating the forcing after rotating the rotor through a full mechanical cycle to generate resulting current or voltage samples (resulting samples) of non-normalized phase A and phase B waveforms. The magnitude of the input vectors are sufficiently small to not move the rotor. A maximum value (x_max) and a minimum value (x_min) are determined for each of the non-normalized phase A and phase B waveforms. An offset value and normalization scale factor (NSF) are determined from the max and min values. The offsets and NSFs are applied to the non-normalized phase waveforms to generate normalized phase A and phase B waveforms. 1 forcing a set of input current or input voltage vectors (set of input vectors) to said stator terminals including repeating said forcing after rotating a rotor of said motor through discrete angles to complete at least one full mechanical cycle to generate resulting current or voltage samples (resulting samples) of non-normalized phase A waveforms and of non-normalized phase B waveforms, wherein a magnitude of said input vectors are all sufficiently small to not move said rotor, and wherein a time duration for said input vectors is essentially constant;', 'determining a maximum value (x_max) and a minimum value (x_min) for each of said non-normalized phase A waveforms and said non-normalized phase B waveforms;', 'using said x_max_and said x_min, determining an offset value and normalization scale factor (NSF) for each of said non-normalized phase A and said phase B waveforms, and', 'applying said offset value and NSF to each of said non-normalized phase A and phase B waveforms to generate a normalized phase A waveform and a normalized phase B waveform ...

Motor driving circuit and control method thereof

A motor driving circuit including a first and a second driving signal output circuit is configured to selectively output a six-step square wave driving signal from the first driving signal output circuit, or a space-vector driving signal from the second driving signal output circuit to an inverter to drive a motor according to whether an operating power exceeds a power threshold. The first driving signal output circuit is configured to generate the six-step square wave driving signal. The second driving signal output circuit is configured to generate the space-vector driving signal.

CONTROLLER FOR INCREASING TORQUE OUTPUT OF ELECTRIC MOTORS

A motor includes a stator comprising windings configured to be energized, and a rotor electromagnetically coupled to the stator and configured to turn relative thereto when the stator is energized. The motor also includes a motor controller configured to measure a speed at which the rotor turns, and energize said stator to generate a first torque output at the rotor when the measured speed is below a first threshold. The motor controller is also configured to energize the stator to generate a second torque output at the rotor when the measured speed is at least the first threshold, wherein the second torque output is greater than the first torque output. 1. A motor comprising:a stator comprising windings configured to be energized;a rotor electromagnetically coupled to said stator and configured to turn relative thereto when said stator is energized; and measure a speed at which said rotor turns,', 'energize said stator to generate a first torque output at said rotor when the measured speed is below a first threshold, and', 'energize said stator to generate a second torque output at said rotor when the measured speed is at least the first threshold, wherein the second torque output is greater than the first torque output., 'a motor controller configured to2. The motor of claim 1 , wherein said motor controller is further configured to energize said stator to generate the second torque output at said rotor by increasing a torque output at said rotor from the first torque output to the second torque output at a first rate.3. The motor of claim 1 , wherein said motor controller is further configured to energize said stator to generate the first torque output at said rotor and the second torque output at said rotor during a torque acceleration phase.4. The motor of claim 3 , wherein said motor controller is further configured to energize said stator to resume the first torque output when the measured speed descends below a second threshold during a torque deceleration ...

Method and apparatus for on-line estimation of initial position of surface permanent magnet electric machine

The present invention relates to a method and apparatus for on-line estimation of an initial position of a surface permanent magnet electric machine in a stationary state or at a first speed. The method (100) for on-line estimation of an initial position of a surface permanent magnet electric machine in a stationary state or at a first speed comprises: injecting a high-frequency pulsating voltage signal; acquiring a d-axis high-frequency current signal responding to the high-frequency pulsating voltage signal; and estimating an initial position of the surface permanent magnet electric machine on the basis of a second harmonic of the d-axis high-frequency current signal. According to the present invention, the apparatus (200) for on-line estimation of an initial position of a surface permanent magnet electric machine in a stationary state or at a first is speed is also provided, the apparatus comprising a voltage injection unit configured to inject a high-frequency pulsating voltage signal, a current acquisition unit configured to acquire a d-axis high-frequency current signal responding to the high-frequency pulsating voltage signal, and an analysis unit configured to analyse a second harmonic of the d-axis high-frequency current signal so as to estimate an initial position of the surface permanent magnet electric machine.

DYNAMIC GENERATOR VOLTAGE CONTROL FOR HIGH POWER DRILLING AND LOGGING-WHILE-DRILLING

A power generation system for a drilling tool includes a turbine, an alternator, a converter and a first active rectifier control (ARC). The turbine is adapted to be driven by a fluid flow in a well. The alternator is coupled to the turbine and generates an alternative current (AC). The converter converts the AC to direct current (DC) and carries out active rectification. The first active rectifier control (ARC) controls the active rectification of the converter. 1. A power generation system for a drilling tool , comprising:a turbine adapted to be driven by a fluid flow in a well;an alternator coupled to the turbine and to generate an alternative current (AC);a converter to convert the AC to direct current (DC) and to carry out active rectification; anda first active rectifier control (ARC) to control the active rectification of the converter; anda load of the drilling tool coupled to the second converter.2. The power generation system of claim 1 , wherein the first ARC controls the active rectification based on the AC from the alternator claim 1 , regenerated energy from the load claim 1 , and the DC from the first converter.3. The power generation system of claim 2 , further comprising a first resolver associated with the alternator claim 2 ,wherein the first ARC controls the active rectification further based on a feedback from the first resolver.4. The power generation system of claim 2 , wherein the first ARC comprises a space and position estimator that estimates a back-electromotive force (EMF).5. The power generation system of claim 1 , further comprising:a capacitor bank coupled to the first converter;a second converter coupled to the capacitor bank and carrying out an active rectification.6. The power generation system of claim 5 , further comprising a second ARC that controls the active rectification of the second converter.7. The power generation system of claim 6 , wherein the second ARC controls the active rectification of the second converter based on ...

Electric power steering apparatus

An electric power steering apparatus of a vector control system that drives and controls a motor by an inverter and applies an assist torque to a steering system of a vehicle, including the first compensation function to perform a dead time (DT) compensation based on respective phase motor terminal voltages and respective phase duty command values, the second compensation function to perform a DT compensation based on steering assist command values, the third compensation function to perform the DT compensation based on dq-axis current command values, and a temperature detecting section to detect temperature of ECU, wherein the correction of the DT compensation is performed based on the temperature, wherein switches of the compensation functions are performed by using a conditional branch due to software and a gradual-changing switch, wherein the dq-axis DT compensation values after the conditional branch and the gradual-changing switch are performed are calculated, and wherein the dq-axis voltage command values are compensated by the dq-axis DT compensation values.

MOTOR DRIVE SYSTEM

In a motor drive device , a phase compensation amount calculation unit calculates a phase compensation amount Δθ for compensating a voltage phase θv* when a control mode is switched in a control selection unit . The control selection unit outputs the three-phase voltage command Vuvw* according to any one of the plurality of control modes based on the modulation factor Kh*, the voltage phase θv*, and the phase compensation amount Δθ. A PWM control unit outputs gate signals Gun, Gup, Gvn, Gvp, Gwn, and Gwv based on the three-phase voltage command Vuvw* and a rotor position θd. The inverter has a plurality of switching elements, and controls the plurality of switching elements based on gate signals Gun, Gup, Gvn, Gyp, Gwn, and Gwv to drive the AC motor 1. A motor drive system , comprising:an AC motor;a rotor position detection unit that detects a rotor position of the AC motor;a current sensor that detects a three-phase AC current flowing through the AC motor;a coordinate conversion unit that calculates a d-axis current and a q-axis current of the AC motor based on the rotor position and the three-phase AC current;a current control unit that outputs a d-axis voltage command and a q-axis voltage command based on an input d-axis current command value and q-axis current command value, and based on the d-axis current and the q-axis current;a modulation factor/voltage phase calculation unit that calculates a modulation factor and a voltage phase based on the d-axis voltage command and the q-axis voltage command;a phase compensation amount calculation unit that calculates a phase compensation amount for compensating the voltage phase;a control selection unit that outputs a three-phase voltage command according to any one of a plurality of control modes based on the modulation factor, the voltage phase, and the phase compensation amount;a PWM control unit that outputs a gate signal based on the three-phase voltage command and the rotor position; andan inverter that includes a ...

Control device for ac rotating machine, and control device for electric power steering

A control device applies voltages to an AC rotating machine based on voltage command values on stationary coordinates. Currents in a plurality phases flowing the rotating machine are detected as detection currents. Coordinate conversion is applied to those detection currents based on any phase in the rotating machine, for generate detection currents on rotational coordinates. Voltage command values on the rotational coordinates are generated based on current command values on the rotational coordinates and the detection currents. Coordinate conversion is applied to those voltage command values based on the any phase, for generate first voltage command values on the stationary coordinates. Phases of one of the first voltage command values and generated second voltage command values on the stationary coordinates are corrected to generate the second voltage command values. One of the second and the first voltage command values are selected as the voltage command values on the stationary coordinates.

Process and device for the field orientation control of a permanent magnet excited synchronous electric motor for a motor vehicle has rotation speed limiters

A process for the field orientation control of a permanent magnet-excited synchronous motor controls long and cross currents (1,2), leads to an uncoupling network, converts to a multiphase ac voltage by a transformer (13), feeds to a pulse inverter controlling the motor and has rotation-dependent voltage limiters (3,4). An Independent claim is also included for a device to operate the above process.

Method for adjusting and detecting rotor position of synchronous motor

Method for detecting/adjusting synchronous motor rotor position

To obtain an adjustment method of rotor position detection of a synchronous motor with excellent productivity. An adjustment method of rotor position detection of a synchronous motor, wherein a synchronous motor having a stator wound around a stator coil and a rotor provided with magnetic poles, and a rotational position detector having a sensor rotor fixed to the rotor and a sensor stator disposed opposite to the sensor rotor for detecting a rotational position of the rotor are provided, and wherein an amount of deviation between the rotational position of the synchronous motor determined from an output of the rotational position detector and an actual rotational position of the synchronous motor is adjusted, the method comprising: a step of detecting the amount of deviation during rotation of the synchronous motor; and a step of mechanically adjusting a relative position between the rotational position detector and the synchronous motor based on a detected value of the amount of deviation, is provided.

Method and device for the field-oriented control of a synchronous machine

The invention relates to a method and to a device for the field-oriented control of a synchronous machine. For this purpose, a cross current target value, a longitudinal current target value, a cross current actual value and a longitudinal current actual value are determined. The values obtained are fed to a control unit that determines a longitudinal voltage component and a cross voltage component. Said voltage components are converted into voltages of a multiphase rotational flow system and then forwarded to a pulse controlled inverter. A control of the synchronous machine is carried out by the output signals of the pulse controlled inverter. The detection of the cross current target value and the longitudinal current target value is carried out such that the sum of the losses is minimized in each operating point of the synchronous machine.

电动机驱动装置的控制装置

提供一种对控制动作点范围可以变大的交流电动机优选的电动机驱动装置的控制装置。具备：电流控制部、电压控制部、基于交流电动机的目标转矩(TM)来决定电流控制周期(Pi)的电流控制周期决定部、基于交流电动机的旋转速度(ω)来决定电压控制周期(Pv)的电压控制周期决定部和基于电流控制周期决定部以及电压控制周期决定部的决定来设定电流控制周期(Pi)以及电压控制周期(Pv)的控制周期设定部，其中，电流控制周期决定部根据目标转矩(TM)将随着目标转矩(TM)变小而连续地或者分阶段地变大的值决定为电流控制周期(Pi)，电压控制周期决定部根据旋转速度(ω)将随着旋转速度(ω)变低而连续地或者分阶段地变大的值决定为电压控制周期(Pv)。

유도전동기의 속도제어 장치

유도전동기의 속도제어 장치가 개시된다. 본 발명의 장치는, 유도전동기의 회전속도를 검출하여, 상기 회전속도와, 소재의 최소 직경, 상기 유도전동기의 최대 속도 및 선속도 지령을 이용하여 상기 소재의 직경을 연산하고, 연산한 소재의 직경과, 상기 선속도지령을 이용하여 지령속도를 연산하고, 연산한 소재의 직경과, 장력지령, 소재의 최소 직경 및 마찰손 보상을 이용하여 토크제한값을 연산하여, 상기 토크제한값에 따라, 지령속도를 제한한다.

Method for calibrating resolver offset

레졸버 옵셋 보정 방법이 개시된다. 일 실시예는 모터의 지령 전류를 설정하고, 모터가 회전하는지 여부를 확인하며, 상기 설정된 모터의 지령 전류에 따라 상기 모터에 흐르는 모터 전류를 측정하고, 상기 모터의 회전 여부를 기초로, 상기 모터 전류를 이용하여 레졸버 옵셋을 계산한다. A resolver offset correction method is disclosed. In one embodiment, the command current of the motor is set, whether or not the motor is rotating, the motor current flowing in the motor in accordance with the command current of the set motor is measured, and based on the rotation of the motor, Calculate the resolver offset using the current.

AC motor control device

电动机系统

本发明提供一种电动机系统，具备：电动机(3)，其将定子(53)的电枢磁极的数量、第1转子(51)的磁极的数量、和第2转子(52)的磁芯的数量之比设定成1∶m∶(1+m)/2；和ECU(60)，其根据转矩指令值(Tr_c)来生成d轴电压指令值(V d_ c)及q轴电压指令值(V q_ c)，并在该电压指令值的向量和的大小超过根据电池(11)的输出电压(V 0 )而设定的上限电压(V ulmt )时，修正该电压指令值，以便产生使第1转子的磁极的磁通量减少的磁场削弱电流。

Power inverter

FIELD: transport. SUBSTANCE: synchronous machine rpm control device comprises rpm data detector 6 to make inverter 2 up charge voltage V c of capacitor 3 for it to exceed induced voltage V m generated by machine 5 in switching into inertial motion mode. Inverter maintains charge voltage V c in said mode to control field attenuation so that said induced voltage V m downs below DC voltage V dc in switching from inertial motion mode into generation mode or regenerative mode. EFFECT: higher reliability, reduced power consumption. 7 cl, 14 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 466 040 (13) C1 (51) МПК B60L 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011112852/11, 03.08.2009 (24) Дата начала отсчета срока действия патента: 03.08.2009 (72) Автор(ы): КОНО Масаки (JP), КАТО Со (JP) (45) Опубликовано: 10.11.2012 Бюл. № 31 2 4 6 6 0 4 0 (56) Список документов, цитированных в отчете о поиске: SU 1051681 А, 30.10.1983. US 20030029654 A1, 13.03.2003. EP 0594457 A1, 27.04.1994. EP 1724147 A2, 22.11.2006. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 05.04.2011 2 4 6 6 0 4 0 R U (87) Публикация заявки РСТ: WO 2010/026699 (11.03.2010) C 1 C 1 (86) Заявка PCT: JP 2009/003670 (03.08.2009) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры" (54) СИЛОВОЕ ПРЕОБРАЗОВАТЕЛЬНОЕ УСТРОЙСТВО (57) Реферат: Устройство управления вращением синхронной машины содержит средство (6) детектирования информации о вращении и вынуждает преобразователь (2) поднять напряжение Vc заряда конденсатора (3) таким образом, чтобы оно оказалось выше индуцированного напряжения Vm, генерируемого синхронной машиной (5) во время переключения в режим движения по инерции. Преобразователь поддерживает напряжение Vc заряда во время режима движения по инерции и выполняет управление ослаблением поля таким образом, чтобы индуцированное напряжение Vm, генерируемое ...

레졸버 옵셋 보정 방법

레졸버 옵셋 보정 방법이 개시된다. 일 실시예는 모터의 지령 전류를 설정하고, 모터가 회전하는지 여부를 확인하며, 상기 설정된 모터의 지령 전류에 따라 상기 모터에 흐르는 모터 전류를 측정하고, 상기 모터의 회전 여부를 기초로, 상기 모터 전류를 이용하여 레졸버 옵셋을 계산한다.

System and method for preventing demagnetization of permanent magnets in an electric machine

一种用于驱动永磁体电机的电动机驱动器，包括：逆变器，其具有被选择性地操作以控制电机中的电流和端电压的开关；以及控制器，其可操作地连接到逆变器，以控制开关的切换，以控制电机中的电流和端电压。控制器接收与在一个或多个相上提供给电机的电流和电压中的至少一个有关的输入，分析电压和电流以识别电机中的故障，并控制逆变器中的多个开关的切换以基于所识别的故障来调整电机中的电流和端电压，其中电机中所修改的电流和端电压可防止电机中的永磁体消磁。

电机驱动装置

一种电机驱动装置，包括：逆变器控制单元，其被配置成使用用于设置电机的驱动的控制命令值和包括供应至电机的驱动电力的电流值的反馈值来生成用于对电机进行反馈控制的控制信号并且输出控制信号；逆变器，其被配置成根据从逆变器控制单元输出的控制信号向电机供应驱动电力；以及异常检测单元，其被配置成检测逆变器的异常。当供应至电机的驱动电力的三相AC电压值之和大于预定电压值并且反馈值与供应至逆变器控制单元的控制命令值之间的差小于预定值时，异常检测单元确定逆变器是异常的。

Synchronous motor control device

本发明提供一种为进行电源再生以及停电时的同步电动机的停止而控制同步电动机的同步电动机控制装置。同步电动机驱动时交流电源停电时，通过q轴电流指令值设定部设定的q轴电流指令值以及同步电动机驱动时交流电源停电时通过d轴电流指令值设定部设定的d轴电流指令值，以使同步电动机每单位时间的功率的绝对值等于同步电动机每单位时间的损失的方式被设定。

Magnet flux amount estimation device, abnormal demagnetize determination device, synchronous motor driving device, and electric motor car

本发明涉及磁铁磁通量推定装置、异常减磁判定装置、同步电机驱动装置及电动车。根据一实施方式，磁铁磁通量推定装置具备：磁极位置检测单元，用于检测在转子内部具有永久磁铁的永磁同步电机的磁极位置；等效电感值判断单元，用于判断与所述经判定的磁极方向对应的d轴的等效电感值；磁铁磁通量推定单元，根据所述等效电感值计算所述永久磁铁的磁铁磁通量的推定值。

Apparatus for controlling inverter

인버터 제어장치가 개시된다. 본 발명의 일실시예의 장치는, 전동기의 토크전류와 전동기 정보를 이용하여 인버터 지령전압을 보상하는 보상전압을 생성하여, 지령전압에 인가한다. An inverter control apparatus is disclosed. An apparatus according to an embodiment of the present invention generates a compensation voltage for compensating an inverter command voltage using the torque current and motor information of the motor and applies the compensation voltage to the command voltage.

Motor control assembly and motor control method

本发明提供了一种电机控制装置和电机控制方法。绕组切换信号生成器（10）被构造为从电流指令计算器（2）和恒定输出控制器（8）中的至少一个获得指示场弱化的程度的信息，以及在低速旋转状态下当场弱化的程度超过预定条件时生成用于从低速旋转状态切换到高速旋转状态的绕组切换信号。

Inverter control device

Variable speed control device of induction motor

전동기의 취약 자계 영역이나 저속 운전 영역에 있어서, 자속 위치 검출을 위한 일차 각주파수 지령치 ω 1 * 의 연산 오차를 제거하여 자속 연산치를 오차없이 구한다. 벡터 제어되는 유도 전동기의 가변 속도 제어 장치로서, 유기 전압 벡터를 구하기 위한 3상/2상 변환기(21), 벡터 회전기(24)와, 자속축 위치에 근거하여 M 축 유기 전압 및 T 축 유기 전압을 구하는 연산 회로(22)와, 유기 전압 벡터의 절대치 또는 T 축 유기 전압을 자속 상당치에 의하여 제산하여 구한 일차 각주파수 ω 1 을, M 축 유기 전압 E M 이 입력되어 이 E M 이 제로가 되도록 동작하는 조절 수단(52)의 출력에 의해 보정하여 적분기(102)에 부여하는 일차 각주파수 지령치 ω 1 * 를 연산하는 일차 각주파수 연산 수단(200)을 구비한 가변 속도 제어 장치에 관한 것이다. 조절 수단(52)의 출력에 변수 F(x) 를 곱하고, 조절 수단(52)의 비례 이득을 취약 자계 영역에서 작게 한다.

Vector controller of induction motor

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Motor control with voltage harmonic shaping

一种用于电动机的控制系统，包括电流感测装置，所述电流感测装置被布置为产生指示所述电机中的电流的电流感测输出；电流控制装置，所述电流控制装置被布置为接收电流感测输出并输出指示要施加到所述电机的电压的电压需求；以及电压需求校正装置，所述电压需求校正装置被布置为产生校正信号并使用所述校正信号和电压需求以产生用于电压谐波整形的校正后的电压需求。