Устройство векторно-импульсного пуска синхронной машины с обмоткой возбуждения

Полезная модель относится к области электротехники и может быть использована для улучшения пусковых характеристик синхронного двигателя в режимах пуска. Устройство векторно-импульсного пуска синхронной машины с обмоткой возбуждения содержит трехфазный полупроводниковый мост, два датчика напряжения и два датчика тока. Сторона переменного тока трехфазного неуправляемого полупроводникового моста подключена к обмотке статора. На стороне постоянного тока трехфазного неуправляемого полупроводникового моста установлен управляемый полупроводниковый вентиль в виде транзисторного ключа, на управляющий вход которого поступает высокочастотный широтно-модулированный сигнал с выхода блока векторно-импульсного управления. Блок управления формирует управляющий сигнала и подает его на силовой ключ в моменты времени, когда вектор потокосцепления ротора и статора образуют положительный вращающий момент. Устройство векторно-импульсного пуска синхронной машины с обмоткой возбуждения позволяет повысить технико-экономические показатели системы пуска за счет уменьшения количества управляемых полупроводниковых вентилей и улучшения пусковых характеристик двигателя. 2 фиг. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 097 U1 (51) МПК H02P 1/46 (2006.01) H02P 1/50 (2006.01) H02K 19/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016120209, 24.05.2016 (24) Дата начала отсчета срока действия патента: 24.05.2016 (73) Патентообладатель(и): Лицин Константин Владимирович (RU) 03.03.2017 Приоритет(ы): (22) Дата подачи заявки: 24.05.2016 (56) Список документов, цитированных в отчете о поиске: RU 2272351 C1, 20.03.2006. RU Адрес для переписки: 462353, Оренбургская обл., г. Новотроицк, ул. Советская, 93, кв. 57, Лицину Константину Владимировичу 2271600 С1, 10.03.2006. GB 1410141 A, 15.101975. JP 2015033150 A, 16.02.2015. FR 2397744 A1, 09.02.1979. EP 2587661 A1, 01.05.2013. WO 2004084385 A1, 30.09.2004. R U (57) ...

Controller and variable-speed generator-motor starting method

In one embodiment, there is provided a controller that performs control to supply driving electricity to a secondary winding of a variable-speed generator-motor from a secondary exciter and thereby start the variable-speed generator-motor from a standstill state in a variable-speed pumped storage system. The controller performs control to complete a start-up by the driving electricity from the secondary exciter and connect the variable-speed generator-motor in parallel with an electric power system, in a state where a rotating speed of the variable-speed generator-motor is lower than a lower limit speed of a variable-speed operation range.

CONTROL OF HEAVY MACHINES

The present invention relates to a system for controlling rotational speed on a rotating process machine, which for example is a turbine or a propeller, where the rotating process machine is connected to at least one motor and arranged to rotate with a given rotational speed given by the motor, the motor is connected to a control system and the rotational speed of the motor is arranged to be controlled by a control system. The rotating process machine comprises a load control arranged to be adaptable, the control system is connected to the rotating process machine. With the invention, one achieves soft transitions between several selectable rotational speeds and lower energy consumption by step by step adjusting the size and the rotational speed of the motor to varying energy requirement.

CONTROL METHOD FOR STARTING A SYNCHRONOUS ELECTRIC MOTOR

The invention relates to a control method implemented in a variable speed drive for starting a synchronous electric motor (M), said method comprising the following steps: 1. Control method implemented in a variable speed drive for starting a synchronous electric motor (M) equipped with a rotor and connected via output phases to said variable speed drive , said method being characterized in that it comprises the following steps:the application, as input, of a reference speed (ωs) according to a predefined speed profile, said speed profile being at least continuous and comprising a zero initial value, at least a non-zero value in order to cause the rotor of said motor to rotate and a zero final value;the determination of a reference position (θs) based on the reference speed that is applied as input;the determination of a voltage (Vdq) in a frame of reference rotating at the speed of the electric motor, based on the reference speed that is applied as input;the determination of control voltages (Va, Vb, Vc) to be applied to each output phase depending, on the one hand, on the determined reference position and, on the other hand, on said voltage determined in the rotating frame of reference;the application of the control voltages (Va, Vb, Vc) to each output phase to obtain an alignment of the position of the rotor of said motor with the reference position (θs).2. Method according to claim 1 , characterized in that the step of determining the voltage in the rotating frame of reference is carried out with control of the current and consists in:measuring the currents (ia, ib, ic) flowing through the output phases;transforming these currents measured in the three output phases into a measured flux current and a measured torque current;determining a reference flux current (idref) and a reference torque current (iqref) based on the reference speed injected as input;determining the voltage in the rotating frame of reference by virtue of a proportional-integral controller that ...

MOTOR DRIVING APPARATUS AND AIR CONDITIONER

Prior to starting of first and second synchronous motors, direct-current excitation is performed to pull in rotors of the synchronous motors to a designated position. In the direct-current excitation, a difference between a value of a direct current flowing through the first synchronous motor and a value of a direct current flowing through the second synchronous motor is reduced. For example, d-axis currents and q-axis currents corresponding to three-phase currents flowing through the motors are determined; a d-axis voltage command value for making one of the d-axis currents larger in absolute value equal to a d-axis current command value is determined, and a q-axis voltage command value for making one of the q-axis currents larger in absolute value equal to a q-axis current command value is determined; an inverter is driven using the determined d-axis voltage command value and q-axis voltage command value. 1. A motor driving apparatus comprising:an inverter to drive a first synchronous motor and a second synchronous motor each including a rotor; anda controller to control the inverter,wherein the controller pulls in the rotor of the first synchronous motor and the rotor of the second synchronous motor to a designated position by performing direct-current excitation prior to starting of the first synchronous motor and the second synchronous motor, andwherein a difference between a value of a direct current flowing through the first synchronous motor and a value of a direct current flowing through the second synchronous motor is reduced during the direct-current excitation.2. The motor driving apparatus of claim 1 , wherein a larger one of the value of the direct current flowing through the first synchronous motor and the value of the direct current flowing through the second synchronous motor approaches a smaller one of the values.3. The motor driving apparatus of claim 1 , wherein a smaller one of the value of the direct current flowing through the first ...

Integrated Brushless Starter Generator

A brushless starter-generator system is contained within a single housing. The housing has a first end with an opening to receive a drive spline from a motive source and an opposing second end. A brushless, rotating, machine is located adjacent the first end and is kinetically connectable to the drive spline. A power control unit is adjacent the second end and electrically coupled to the brushless, rotating machine. The brushless, rotating machine is selected from the group consisting of a synchronous machine, a permanent magnet machine, and an induction machine. Electrical and mechanical interfaces are identical to a like-rated brushed version for a true “drop-in” replacement capability to facilitate replacements and up-grades

Synchronous electric power distribution startup system

A system includes a synchronous generator coupled to an excitation system. The excitation system may output an excitation signal to excite the synchronous generator to produce a voltage and a current at an output of the synchronous generator. During startup, when the synchronous generator is rotating at less than rated speed, non-rotating synchronous electric motors may be electrically coupled to the synchronous generator. A controller may direct the excitation system to output the excitation signal to generate, with the synchronous generator, a first magnitude of current flow, and the synchronous motor loads are non-rotational in response to receipt of the first magnitude of current flow. In addition, the controller may selectively direct output of a pulse of the excitation signal, when the synchronous generator is rotating at less than rated speed, to urge the non-rotating synchronous motor loads into rotational electrical alignment with the synchronous generator and each other.

Eng Ring and Rotor Bar for Line Start Permanent Magnet Motor

A rotor for an LSIPM comprises a plurality of permanent magnets defining a number of poles (“P”) of the LSIPM, and a plurality of rotor bars spaced about the rotor defining a rotor bar area (“BA”). The rotor bars are formed of a conductive material having an associated conductivity (“σ”). End members are disposed on axial opposite ends of the rotor core. The end members are in electrical contact with the rotor bars. The end members are formed from a material having an associated conductivity (“σ”). Each end ring member has a minimum geometric cross sectional area (“ERA”) and outer diameter that generally corresponds to the rotor core outer diameter. The ERA is greater than 0.5 times the rotor bar area per the number of poles (BA/P) times a ratio of the rotor bar material conductivity to the end member material conductivity (σ/σ). 1. A method comprising: a stator;', a plurality of permanent magnets defining a number of poles (P) for the machine; and', {'sub': 'RB', 'a plurality of rotor bars spaced about the rotor core, the rotor bars defining a rotor bar area (BA) and being formed of a conductive material having an associated conductivity (σ); and'}], 'a rotor core disposed within the stator, the rotor core comprising, {'sub': 'EM', 'end members disposed on axial opposite ends of the rotor core, the end members being in electrical contact with the rotor bars, each end member having a geometric cross sectional area (“ERA”), wherein the end members have an outer diameter that generally corresponds to an outer diameter of the rotor core, and the end members are formed from a material having an associated conductivity (σ);'}], 'providing a line-start synchronous motor, wherein the motor comprisesoperatively coupling a first load to the motor; anddriving the first load from start to at least near synchronous speed during steady state operation of the motor with the first load coupled thereto;{'sub': RB', 'EM, 'wherein the ERA of each of the end members is greater than 0. ...

SOFT START MOTOR CONTROL SYSTEM FOR AN IRRIGATION SYSTEM

An irrigation system broadly comprising a number of irrigation spans and a control system configured to operate single speed drive motors of the irrigation spans in a start-up mode, full speed mode, and wind-down mode. In the start-up mode, the motor controller gradually increases the drive motor speed from 0 rpms to a full speed by ramping a voltage applied to the drive motor from a starting voltage to a full speed voltage according to a start-up voltage profile over a start-up time interval. In the full speed mode, the motor controller operates the drive motor at a full speed voltage. In the wind-down mode, the motor controller gradually decreases the drive motor speed from full speed to 0 rpms by ramping the voltage applied to the drive motor from the full speed voltage to an ending voltage according to a wind-down voltage profile over a wind-down time interval. 1. An irrigation system comprising: a conduit section connected to conduit sections of adjacent irrigation spans for transporting an irrigation fluid from a fluid source to a field;', 'a truss configured to support the conduit section;', 'a plurality of fluid emitters connected to the conduit section for delivering the irrigation fluid to crops in the field; and', a wheel assembly for traversing the field; and', 'a drive train having a single-speed motor for powering the wheel assembly; and, 'a mobile tower connected to the truss and configured to move the truss, conduit section, and fluid emitters across the field, the mobile tower including], 'a plurality of irrigation spans, each including a start-up mode in which the control system gradually increases a speed of the single-speed motor from 0 rpms to a full speed;', 'a full speed mode; and', 'a wind-down mode in which the control system gradually decreases the speed of the single-speed motor from the full speed to 0 rpms., 'a control system for controlling the single-speed motors of the drive trains, the control system configured to operate at least ...

ELECTRIC MOTOR PROTECTION USING STATOR CURRENT AND VOLTAGE MEASUREMENTS

Monitoring conditions of an electric motor using stator current and voltage signals from power supplied to the motor is disclosed herein. The stator voltage and current signals may be used to calculate instantaneous power values which may be used to calculate slip. The slip may be used to monitor for a locked rotor condition during startup of the motor. The slip value may be used to provide thermal protection to the electric motor. 1. A method for providing protection and monitoring to a three-phase electric motor using measurements from a stator of the electric motor , comprising:in an intelligent electronic device (“IED”), sampling a plurality of stator currents and voltages to a motor to obtain a plurality of current and voltage values for each of three phases;calculating a composite power from the plurality of current and voltage values;for a first predetermined frequency, calculate a first magnitude of the composite power using a first predetermined number of composite power samples;for a second predetermined frequency, calculate a second magnitude of the composite power using the first predetermined number of composite power samples;determine a maximum magnitude from the first magnitude and the second magnitude;calculate a slip value from the predetermined frequency corresponding with the determined maximum magnitude;determining operating conditions of the electric motor using the calculated slip value; andwhen the operating conditions are outside of predetermined acceptable operating conditions, providing a protection signal to open a circuit breaker to disconnect the electric motor.2. The method of further comprising:for a third predetermined frequency, calculate a third magnitude of the composite power using the first predetermined number of composite power samples; anddetermine the maximum magnitude from the first, second, and third magnitudes.3. The method of claim 1 , further comprising the step of filtering the calculated composite power to remove high- ...

SYNCHRONOUS TRANSFER CONTROL SYSTEM IN AN ARC RESISTANT ENCLOSURE

A synchronous transfer control system includes an arc resistant enclosure having a main housing having an open top portion and an arc plenum, the arc plenum having a closed front portion, a closed rear portion, and at least one open side portion, and a plurality of synchronous transfer control components housed within the main housing including: (i) a hard bussed first bus structured to be coupled to a first power source, (ii) a second power source, and (iii) a hard bussed second bus, wherein an output of the second power source is able to be selectively coupled to the second bus, wherein the first bus is able to be selectively and individually coupled to each of the motors, and wherein the second bus is able to be selectively and individually coupled to each of the motors. 1. A synchronous transfer control system for controlling operation of a number of electric motors , comprising:an arc resistant enclosure having a main housing having an open top portion and an arc plenum fluidly coupled to the top portion, the arc plenum having a closed front portion, a closed rear portion, and at least one open side portion structured for direct or indirect connection to a duct or vent system, the main housing having a number of enclosure members each made of a material having arc resistant ratings of 50 kA -0.5 s, Type 2B;a plurality of synchronous transfer control components housed within the main housing, the synchronous transfer control components including: (i) a hard bussed first bus structured to be coupled to a first power source, (ii) a second power source, and (iii) a hard bussed second bus, wherein an output of the second power source is able to be selectively coupled to the second bus, wherein the first bus is able to be selectively and individually coupled to each of the motors, and wherein the second bus is able to be selectively and individually coupled to each of the motors.2. The synchronous transfer control system according to claim 1 , wherein the second ...

MOTOR DRIVING CONTROL DEVICE AND CONTROL METHOD OF MOTOR DRIVING CONTROL DEVICE

There is provided a motor driving control device including a state determining unit which determines whether a motor can perform a slow start operation based on a rotating state and a driving state of the motor, a control unit which generates command information corresponding to a speed at which the motor is to be rotated, based on a determination result of the state determining unit, and a motor driving unit which outputs a driving signal corresponding to the command information generated by the control unit to the motor so as to drive the motor. When it is determined that the motor can perform the slow start operation, the control unit generates the command information such that the motor performs the slow start operation. 1. A motor driving control device comprising:a rotation detecting unit configured to detect a rotating state of a motor;a drive detecting unit configured to detect a driving state of the motor;a command acquiring unit configured to acquire first command information for starting the motor;a state determining unit configured to determine whether the motor can perform a slow start operation based on a detection result of the rotation detecting unit and a detection result of the drive detecting unit, when the command acquiring unit acquires the first command information;a control unit configured to generate second command information corresponding to a speed at which the motor is to be rotated, based on a determination result of the state determining unit and the first command information acquired by the command acquiring unit; anda motor driving unit configured to output a driving signal corresponding to the second command information generated by the control unit to the motor so as to drive the motor,wherein when it is determined that the motor can perform the slow start operation, the control unit is configured to generate the second command information such that the motor performs the slow start operation.2. The motor driving control device ...

THYRISTOR STARTER

A thyristor starter is configured to accelerate 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 of a converter to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. In a first case in which a first synchronous machine having a first inductance is started, a switching rotation speed for switching from the first mode to the second mode is set to a higher rotation speed, compared with a second case in which a second synchronous machine having a second inductance larger than the first inductance is started. 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; andan 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, 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 performing commutation of the inverter by intermittently setting DC output current of the converter to zero, the second mode performing commutation of the inverter by induced voltage of the synchronous machine, andin a first case in which a first synchronous machine having a first inductance is started, a switching rotation speed for switching from the first mode to the second mode is set to a higher rotation speed, compared with a second case in which a second synchronous machine having a second inductance larger than the first inductance is started.2. The thyristor starter according to claim 1 , further comprising:a position detector that detects a rotor position of the synchronous machine;a first controller that controls a firing ...

Field Winding Type Synchronous Motor and Control Method Thereof

A field winding type synchronous motor includes an exciter and, after starting by forming a short circuit of a field winding , excites the field winding by using the exciter, and includes a starting control circuit that outputs a control signal controlling On/Off of a first opening/closing device, in which the exciter and the field winding are connected through the first opening/closing device . The starting control circuit includes: a signal transmitting circuit that outputs the control signal at timing, which is detected based on an induced electromotive voltage generated in the field winding, at which switching to a synchronous operation is performed; and a time limit setting circuit that, after a predetermined time elapses after the starting control circuit is started, directs the signal transmitting circuit to output the control signal. 1. A field winding type synchronous motor that , after starting by forming a short circuit of a field winding , excites the field winding by using an exciter , the field winding type synchronous motor comprising:the exciter; anda starting control circuit that outputs a control signal controlling On/Off of a first opening/closing device, the exciter and the field winding are connected through the first opening/closing device,wherein the starting control circuit includes:a signal transmitting circuit that outputs the control signal at timing, which is detected based on an induced electromotive voltage generated in the field winding, at which switching to a synchronous operation is performed; anda time limit setting circuit that, after a predetermined time elapses after the starting control circuit is started, directs the signal transmitting circuit to output the control signal.2. The field winding type synchronous motor according to claim 1 , wherein the starting control circuit detects the timing based on an amplitude or a frequency of the induced electromotive voltage.3. The field winding type synchronous motor according to ...

MOTOR DRIVING APPARATUS AND SYSTEM

A motor driving system includes a first driving controller, a second driving controller, a first motor, a second motor, a third motor, and a fourth motor. The first motor is electrically connected to the first output terminals of the first and the second driving controllers. The second motor is electrically connected to the third output terminal of the first driving controller and the second output terminal of the second driving controller. The third motor is electrically connected to the second output terminal of the first driving controller and the third output terminal of the second driving controller. The fourth motor is electrically connected to the fourth output terminals of the first and the second driving controllers. The first and the second driving controllers receive control signals, and drive the first, the second, the third, and the fourth motors to rotate according to the control signals. 1. A motor driving system , comprising:a first driving controller and a second driving controller, each of the first and the second driving controller having a first output terminal, a second output terminal, a third output terminal, and a fourth output terminal; anda first motor, a second motor, a third motor, and a fourth motor; the first motor being electrically connected to the first output terminals of the first and the second driving controllers; the second motor being electrically connected to the third output terminal of the first driving controller and the second output terminal of the second driving controller; the third motor being electrically connected to the second output terminal of the first driving controller and the third output terminal of the second driving controller; and the fourth motor being electrically connected to the fourth output terminals of the first and the second driving controllers;wherein the first and the second driving controllers are adapted to receive control signals, and drive the first, the second, the third, and the fourth ...

MOTOR DRIVING SYSTEM

A motor driving system includes a first switch, a second switch, a third switch, a fourth switch, a first motor, a second motor, a third motor, and a fourth motor. The interconnections between all the switches allows the detection of any one of a number of motors as being unconnected, and allows control of all the motors individually, to avoid a dedicated switching system being necessary for each motor. 1. A motor driving system , comprising:a first switch, a second switch, a third switch, a fourth switch, a first motor, a second motor, a third motor, and a fourth motor; each of the first, the second, the third, and the fourth switches comprises a first terminal, a second terminal, and a third terminal; each of the first, the second, the third, and the fourth motors comprises an anode and a cathode; the anode and the cathode of the first motor are electrically connected to the third terminals of the first and the third switches; the anode and the cathode of the second motor are electrically connected to the third terminals of the second and the third switches; the anode and the cathode of the third motor are electrically connected to the third terminals of the first and the fourth switches; the anode and the cathode of the fourth motor are electrically connected to the third terminals of the second and the fourth switches; the second terminals of the first and the second switches receive a first DC voltage; the second terminals of the third and the fourth switches are grounded;wherein the first motor is adapted to rotate, according to each of the two first terminals of the first and the third switches receiving a first control signal to turn on the first and the third switches; the second motor is adapted to rotate, according to each of the two first terminals of the second and the third switches receiving the first control signal to turn on the second and the third switches; the third motor is adapted to rotate, according to each of the two first terminals of the ...

SWITCHING PROCESS AND ASSOCIATED CONTROL DEVICE

A method for switching the voltage supply for an alternating current electric engine between a supply from an ASD and a supply from an electrical network, the method comprises a stage for determining an ideal speed of rotation for the electric engine and for synchronising the phase and the amplitude of the voltage delivered by the ASD with the voltage delivered by the electrical network. 1. A method for switching the voltage supply of an alternating current (AC) electric engine between an adjustable speed drive (ASD) and an electrical network , the method comprising:determining an ideal speed of rotation for the AC electric engine; and measuring the voltage delivered by the ASD and the voltage delivered by the electrical network;', 'calculating a signal representing the difference in amplitude between the measured ASD voltage and the measured electrical network voltage, and a signal representing the difference in phase between the measured ASD voltage and the measured electrical network voltage;', 'determining an ideal flow for the AC electric engine; and', 'generating a voltage command signal for the voltage of the ASD on the basis of the ideal flow, and adding the voltage command signal to the signal representing the difference in amplitude between the measured ASD voltage and the measured electrical network voltage., 'synchronizing the phase and the amplitude of the voltage delivered by the ASD with the phase and the amplitude of the voltage delivered by the electrical network, wherein synchronizing comprises2. The method according to claim 1 , wherein generating a voltage command signal comprises generating the voltage command signal on the basis of the ideal speed of rotation claim 1 , and the voltage command signal is added to the signal representing the difference in phase between the measured ASD voltage and the measured electrical network voltage.3. The method according to claim 1 , wherein generating a voltage command is activated by using a vector command ...

Motor drive controller and control method of motor drive controller

A motor drive controller includes: a control circuit unit configured to output a drive control signal for driving a motor in response to a command signal externally input to the control circuit unit; and a motor driving unit configured to output a drive signal to the motor based on the drive control signal output from the control circuit unit. The control circuit unit is provided with: a speed setting unit configured to generate a target rotation speed signal corresponding to a target rotation speed based on a command step determined in response to a step command signal and predetermined setting information when the step command signal is input as the command signal; and a drive control signal generating unit configured to generate and output the drive control signal based on the target rotation speed signal.

DIVIDED PHASE AC SYNCHRONOUS MOTOR CONTROLLER

A circuit includes phase windings, a power switch circuit comprising at least one power switch at a midpoint of the phase windings, a direct current (DC) supply circuit at the midpoint of the phase windings, and one or more non-collapsing DC power supply components to prevent the DC power supply from collapsing when the at least one power switch is on and conducting during one or more portions of a cycle. The one or more non-collapsing DC power supply components each may include one or more of a tap from one of the phase windings electrically connected to the DC power supply, a secondary phase coil winding connected to the DC power supply to power the power supply, one or more resistors between the one of the phase windings and the power switch circuit, one or more Zener diodes between one of the phase windings and the power switch circuit, and/or an electrical component to create a voltage drop between one of the phase windings and the power switch circuit to prevent the power supply from collapsing when the at least one power switch in the power switch circuit is on and conducting. 1. A circuit comprising:phase windings;a direct current (DC) power supply at least approximately at a midpoint of the phase windings to receive alternating current (AC) power from the phase windings and convert the AC power to DC power;a power switch circuit comprising at least one power switch at least approximately at the midpoint of the phase windings to receive AC power from the phase windings;a first non-collapsing DC power supply component connected to the DC power supply to prevent the DC power supply from collapsing when the at least one power switch is on and conducting during a first portion of a cycle; anda second non-collapsing DC power supply component connected to the DC power supply to prevent the DC power supply from collapsing when the at least one power switch is on and conducting during a second portion of the cycle.2. The circuit of wherein the phase windings are ...

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.

Start-up method of an internal combustion engine with the aid of a belt-driven starter generator

A method for improving a start-up of an internal combustion engine with the aid of a belt-driven starter generator which includes a stator winding and a rotor winding, the starter generator for generating a start-up torque being operated in such a way that the stator winding and the rotor winding are energized essentially at the same time immediately after a start-up request of the starter generator. Also described is a processing unit to perform the method and a computer readable medium.

A METHOD FOR REDUCING THE MAXIMUM INRUSH CURRENT OF A COMPRESSOR SYSTEM COMPRISING MULTIPLE ASYNCHRONOUS ELECTRICAL MOTORS AND A COMPRESSOR SYSTEM FOR IMPLEMENTING THIS METHOD

This method for controlling asynchronous electrical motors of a compressor system, comprises: —receiving an order to start a first asynchronous electrical motor and a second asynchronous electrical motor of a compressor system; —unloading said first and second motors, by operating respectively a first load control unit of the first motor and a second load control unit of the second motor, in order to reduce the mechanical load associated to said motors; —starting the first motor and, only once the first motor is running at nominal speed, starting the second motor, —loading both the first and second electrical motor only once the second motor has started and is running at nominal speed, by operating the first load control unit and the second load control unit, in order to increase the mechanical load associated to said motors. 1324210. A method for controlling asynchronous electrical motors ( , ) of a compressor system () , this method comprising:{'b': 100', '32', '42', '10, 'receiving () a command to start a first asynchronous electrical motor () and a second asynchronous electrical motor () of a compressor system ();'}{'b': 104', '36', '46', '34', '44, 'unloading () said first and second motor, by operating respectively a first load control unit () of the first motor and a second load control unit () of the second motor, in order to reduce the mechanical load (, ) associated to said motors;'}{'b': 106', '32', '110', '42, 'starting () the first motor () and, only once the first motor is running at nominal speed, starting () the second motor (),'}{'b': 114', '36', '46, 'loading () both first and second electrical motors only once the second motor has started and is running at nominal speed, by operating the first load control unit () and the second load control unit (), in order to increase the mechanical load associated to said motors.'}2. The method of claim 1 , wherein this method further comprises:{'b': 32', '42', '32', '42, 'stopping one motor among the first ...

SOFT START MOTOR CONTROL SYSTEM FOR AN IRRIGATION SYSTEM

An irrigation system broadly comprising a number of irrigation spans and a control system configured to operate single speed drive motors of the irrigation spans in a start-up mode, full speed mode, and wind-down mode. In the start-up mode, the motor controller gradually increases the drive motor speed from 0 rpms to a full speed by ramping a voltage applied to the drive motor from a starting voltage to a full speed voltage according to a start-up voltage profile over a start-up time interval. In the full speed mode, the motor controller operates the drive motor at a full speed voltage. In the wind-down mode, the motor controller gradually decreases the drive motor speed from full speed to 0 rpms by ramping the voltage applied to the drive motor from the full speed voltage to an ending voltage according to a wind-down voltage profile over a wind-down time interval. 1. A control system for controlling a single-speed motor , the control system being configured to operate the single-speed motor in:a start-up mode in which the control system gradually increases a speed of the single-speed motor from 0 rpms to a full speed;a full speed mode in which the speed of the single-speed motor is the full speed; anda wind-down mode in which the control system gradually decreases the speed of the single-speed motor from the full speed to 0 rpms.2. The control system of claim 1 , wherein the control system initiates the start-up mode at a pre-set starting voltage less than a full speed voltage.3. The control system of claim 2 , wherein the control system actively ramps applied voltage in the start-up mode from the starting voltage to the full speed voltage.4. The control system of claim 3 , wherein the control system ramps applied voltage in the start-up mode from the pre-set starting voltage to the full speed voltage according to a pre-determined voltage profile.5. The control system of claim 1 , wherein the control system operates the single-speed motor in the start-up mode for a ...

MODULAR MULTIPLE SINGLE-POLE ELECTROMAGNETIC SWITCHING SYSTEM AND METHOD

One embodiment describes a wye-delta starter, which includes a first single pole, single current carrying path switching device that selectively connects and disconnects a first winding of a motor in a wye configuration; a second single pole, single current carrying path switching device that selectively connects and disconnects the first winding in a delta configuration, in which the first switching device and the second switching device are coupled via a first interlock; a third single pole, single current carrying path switching device that selectively connects and disconnects a second winding and a third winding of the motor in the wye configuration; a fourth single pole, single current carrying path switching device that selectively connects and disconnects the second winding in the delta configuration, in which the third switching device and the fourth switching device are coupled via a second interlock; and a fifth single pole, single current carrying path switching device that selectively connects and disconnects the third winding in the delta configuration. 1. A wye-delta starter comprising:a first single pole, single current carrying path switching device configured to selectively connect and disconnect a first winding of a motor in a wye configuration;a second single pole, single current carrying path switching device configured to selectively connect and disconnect the first winding in a delta configuration, wherein the first switching device and the second switching device are coupled via a first interlock;a third single pole, single current carrying path switching device configured to selectively connect and disconnect a second winding and a third winding of the motor in the wye configuration;a fourth single pole, single current carrying path switching device configured to selectively connect and disconnect the second winding in the delta configuration, wherein the third switching device and the fourth switching device are coupled via a second ...

AIRCRAFT BRAKE COOLING FAN CONTROL SYSTEM

An aircraft includes a power source arranged to provide AC electrical power of varying frequency, and a brake cooling fan including an impeller which is driven by an electric motor powered by said AC electrical power for cooling brakes of the aircrafts wheels. The brake cooling fan has an operable mode when the frequency of said AC electrical power meets certain criteria indicating that the frequency of the AC power is suitable for powering the motor, and an inoperable mode to protect against unsuitable operation of the motor. The brake cooling fan may then be safely powered with AC power direct from a wild frequency power network on the aircraft without needing a power inverter or constant power supply generator. 1. An aircraft including:a power source arranged to provide alternating current (AC) electrical power of varying frequency, anda brake cooling fan including an impeller driven by an electric motor powered by the AC electrical power,wherein the brake cooling fan is arranged to have an operable mode selected when certain criteria are met, the criteria including whether the frequency of the AC electrical power is suitable for powering the motor, andthe brake cooling fan is arranged to have an inoperable mode selected when the certain criteria are not met and to protect against unsuitable operation of the motor.2. The aircraft according to claim 1 , wherein the certain criteria include whether or not the frequency is less than a maximum amount.3. The aircraft according to claim 1 , wherein the certain criteria include whether or not the frequency has been less than a threshold amount for a certain period of time.4. The aircraft according to claim 1 , wherein the aircraft is so arranged that the inoperable mode of the brake cooling fan is triggered if the frequency of the AC power is not suitable for powering the motor.5. The aircraft according to claim 1 , wherein the aircraft is so arranged that the inoperable mode of the brake cooling fan is triggered if the ...

System And Method For Controlling A Synchronous Motor

A synchronous electrical motor includes a rotor with a DC field winding. An exciter is configured to energize the DC field winding by generating a DC current in a first direction across the DC field winding when activated. A control system is configured to control a current flow across the DC field winding, the control system including a field discharge resistor and a by-passing circuitry. The by-passing circuitry is configured to implement a first by-passing to electrically by-pass the field discharge resistor during a current flow in the first direction across the DC field winding, and to implement a second by-passing to electrically by-pass the field discharge resistor during a current flow in a second direction across the DC field winding. The control system is able to direct all the DC current generated by the exciter to flow across the DC field winding. 1. A synchronous electrical motor comprising:a rotor with a DC field winding,an exciter configured to energize the DC field winding by generating a DC current in a first direction across the DC field winding when activated, anda control system configured to control a current flow across the DC field winding, the control system comprising a field discharge resistor and a by-passing circuitry configured to implement a first by-passing to electrically by-pass the field discharge resistor during a current flow in the first direction across the DC field winding, and to implement a second by-passing to electrically by-pass the field discharge resistor during a current flow in a second direction across the DC field winding, the second direction being opposite to the first direction,characterized in that the control system is able to direct all the DC current generated by the exciter to flow across the DC field winding.2. The synchronous electrical motor according to claim 1 , wherein the by-passing circuitry is able to implement the first by-passing and the second by-passing independently from each other.3. The ...

VARIABLE SPEED GENERATOR-MOTOR APPARATUS AND VARIABLE SPEED GENERATOR-MOTOR SYSTEM

In a variable speed generator-motor apparatus, a power converter includes six two-terminal arms each formed by serially connecting k unit converters that can output arbitrary voltage, an AC rotating electric machine includes an armature winding with 60-degree phase zone formed from a double layer coil, the armature winding being divided into first and second pole sides to form double star connection by binding neutral points and to be drawn out as two sets of three-phase terminals; three-phase terminals on the first pole side are connected to first terminals of three arms, and second terminals of the three arms are star-connected to a first terminal of a DC power supply; three-phase terminals on the second pole side are connected to second terminals of remaining three arms, and first terminals of the three arms are star-connected to a second terminal of the DC power supply. 1. A variable speed generator-motor system comprising a power converter connected to a DC power supply and a three phase synchronous machine having damper windings and connected to an AC side via three terminals , wherein three terminals are connected to neutral points of three sets of three-terminal reactors , terminals of the three-terminal reactors are connected to terminals of three two-terminal arms that are formed by serially connected k (where k is a natural number equal to one or larger) two-terminal unit converters that are able to output an arbitrary voltage via an energy storage element having voltage source characteristic , and terminals of the arms are star-connected to DC terminal , terminals of the three-terminal reactors are connected to the terminals of three two-terminal arms that are formed by serially connected unit converters , and the terminals of the arms are star-connected to DC terminal , a first controller to adjust a frequency and an amplitude of current supplied from the power converter to the synchronous machine to a fixed value;', 'a second controller to synchronize ...

MOTOR CONTROLLER, SHEET CONVEYING DEVICE, AND IMAGE FORMING APPARATUS

A motor controller () according to the present invention includes a pulse width detection portion (), a speed control portion (), a pulse width storage portion (), a same pulse detection portion (), and a stop processing portion (). The pulse width detection portion detects the pulse widths of pulses included in the pulse signal. The speed control portion performs: an acceleration control of the drive motor; and a deceleration control of the drive motor. The same pulse detection portion detects, from among the pulses included in the pulse signal inputted during the deceleration control, a pulse in which the pulse width detected by the pulse width detection portion is the same pulse width as the pulse width of an earliest pulse stored in the pulse width storage portion. The stop processing portion stops control of a rotation speed of the drive motor performed by the speed control portion. 1. A motor controller comprising:a pulse width detection portion configured to, when a pulse signal including a plurality of pulses each having a pulse width corresponding to a commanded speed to a drive motor is inputted, detect the pulse widths of the pulses included in the pulse signal;a speed control portion configured to perform: an acceleration control in which a rotation speed of the drive motor is accelerated from zero to a predetermined target rotation speed, on the basis of the pulse signal in which the pulse width is set such that the commanded speed gradually increases to the target rotation speed; and a deceleration control in which the rotation speed of the drive motor is decelerated to zero, on the basis of the pulse signal in which the pulse width is set such that the commanded speed gradually decreases from the target rotation speed with the same magnitude of acceleration as that in the acceleration control;a pulse width storage portion configured to store the pulse width detected by the pulse width detection portion for an earliest pulse included in the pulse ...

MOTOR ON-DELAY TIMER

A load starting system in which an upstream controller determines the sequence and timing for starting a group of loads in the most efficient and timely manner. The sequence and timing is determined by one or more real-time operational characteristics, device rating characteristics, customer/user characteristics or learned/historic characteristics or by a combination of the one or more real-time, device rating, customer/user or learned/historic characteristic. 1. A method for starting multiple loads in a most efficient and timely manner comprising the steps of:comparing, by a processor, all loads to be started with a threshold characteristic;selecting, by the processor, from all loads to be started, one or more loads that can be started without exceeding the threshold characteristic;starting, by a starter, the one or more selected loads; andrepeating the comparing, selecting and starting until all remaining loads have been started.2. The method of claim 1 , wherein the threshold characteristic can be one of or a combination of:a real-time operational characteristic;a device rating characteristic;a customer/user characteristic; ora learned/historic characteristic.3. The method of claim 2 , wherein the real-time operational characteristics can include:a current;a voltage (bus or starter);a group FLC settings;an on-time;an off-time; anda thermal memory of each starter.4. The method of claim 2 , wherein the device rating characteristic can include:a lighting warm-up/re-strike time;a load characteristic (lighting type, load type, etc.) a transformer inrush rating;a circuit breaker trip setting; oran overload trip class.5. The method of claim 2 , wherein the customer/user characteristic can include:a subset of loads that must be started together; ora load priority sequence.6. The method of claim 2 , wherein the learned/historic characteristic can include:a load inrush current curve.7. A method for starting multiple loads in a most efficient and timely manner comprising ...

Current-Sourced Motor Drive Control for AC Motors

A current sourced control topology is provided for an AC motor controller that eliminates many of the problems associated with prior art motor controllers that use voltage source inverter (VSI) technologies. By controlling the output of AC current sources such as synchronously controlled down converters to directly drive each motor phase, significant efficiency gains and a reduction in electromagnetic interference is achievable.

MOTOR CONTROL SYSTEM AND METHOD WITH ADAPTIVE FLUX LINKAGE ESTIMATION

A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage. 1. A chiller system comprising:a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop;a synchronous motor configured to drive the compressor, the motor comprising a stator winding and a rotor; and applying a voltage of the stator winding to a transfer function comprising an S-domain integration operation and an error correction variable;', 'using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval; and', 'updating the transfer function to replace the first value of the error correction variable with a second value of the error correction variable after the initial motor starting interval to reduce a flux linkage estimation error resulting from the error correction variable;, 'a controller configured to estimate a flux linkage of the rotor bywherein the controller is configured to provide a control signal to the motor based on the estimated flux linkage.2. The chiller system of claim 1 , wherein:the first value of the error correction variable is ...

Motor control system and method with flux linkage estimation error compensation

A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

THYRISTOR STARTER

This thyristor starter includes a control angle operation portion including a function or a table showing relation between a rotation speed of a synchronous machine and a phase control angle of an inverter and finding a phase control angle having a value in accordance with the rotation speed of the synchronous machine found by a speed operation portion. The phase control angle varies from a minimum value to a maximum value in accordance with the rotation speed of the synchronous machine, and a rate of increase in phase control angle relative to the rotation speed of the synchronous machine is varied in a plurality of steps in accordance with the rotation speed of the synchronous machine. 1. A thyristor starter for starting a synchronous machine , comprising:a converter converting first AC power to DC power;an inverter converting said DC power to second AC power at a variable frequency and supplying the second AC power to said synchronous machine;a speed operation portion finding a rotation speed of said synchronous machine;a control angle operation portion including a function or a table showing relation between the rotation speed of said synchronous machine and a phase control angle of said inverter and finding a phase control angle having a value in accordance with the rotation speed of said synchronous machine found by said speed operation portion; anda control unit controlling said inverter based on the phase control angle found by said control angle operation portion,said phase control angle varying from a minimum value to a maximum value in accordance with the rotation speed of said synchronous machine, anda rate of increase in said phase control angle relative to the rotation speed of said synchronous machine being varied in a plurality of steps in accordance with the rotation speed of said synchronous machine.2. The thyristor starter according to claim 1 , whereinthe rate of increase in said phase control angle relative to the rotation speed of said ...

CONNECTING DEVICE FOR MOTOR AND SUPPLY NETWORK

A connecting device for motor and supply network is provided, comprising: a Variable Frequency Drive (VFD), a first switch (S) and a second switch (S), wherein the Variable Frequency Drive (VFD) is connected in series to the first switch (S), and the second switch (S) is connected in parallel to the series circuit composed of the Variable Frequency Drive (VFD) and the first switch (S). The connecting device of the invention further comprises a bidirectional Silicon Controlled Rectifier (SCR) or two anti-parallel single-directional Silicon Controlled Rectifiers (SCRSCR), wherein the bidirectional Silicon Controlled Rectifier (SCR) or the two anti-parallel single-directional Silicon Controlled Rectifiers (SCRSCR) is/are connected in parallel to the second switch (S). The connecting device of the present invention would not be subject to high current surge when VFD bypassing, avoids the high cost for the overrating of the cable and the bypassing switch, and is easy to be implemented. 112121. A connecting device for motor and supply network , comprising: a Variable Frequency Drive (VFD) , a first switch (S) and a second switch (S) , wherein the Variable Frequency Drive (VFD) is connected in series to the first switch (S) , and the second switch (S) is connected in parallel to the series circuit composed of the Variable Frequency Drive (VFD) and the first switch (S) , which is characterized in that:{'b': '2', 'further comprising a bidirectional Silicon Controlled Rectifier (SCR) which is connected in parallel to the second switch (S).'}212121. A connecting device for motor and supply network , comprising: a Variable Frequency Drive (VFD) , a first switch (S) and a second switch (S) , wherein the Variable Frequency Drive (VFD) is connected in series to the first switch (S) , and the second switch (S) is connected in parallel to the series circuit composed of the Variable Frequency Drive (VFD) and the first switch (S) , which is characterized in that:{'b': 1', '2', '2, ' ...

OPERATING CIRCUIT FOR COUPLING A SYNCHRONOUS MACHINE WITH A VOLTAGE NETWORK AND METHOD FOR OPERATING IT

An operating circuit and a method for operating a synchronous machine on a voltage supply network is disclosed. The operating circuit has a converter circuit with controllable converter switches and a controllable switching arrangement to switch the converter circuit between a start converter configuration and a direct converter configuration. The power supply network is connected to a converter output and the synchronous machine is connected to a converter input of the converter circuit. In the direct converter configuration, an AC voltage is provided at the converter output with a preset AC voltage frequency. In the direct converter configuration, the switching of the AC voltage between the converter input and the converter output takes place without intermediate rectification. 1. An operating circuit for coupling a synchronous machine with a voltage network ,with a converter circuit that can be controlled by a control unit having a converter input connected to the synchronous machine and a converter output connected to the voltage network, whereby the converter circuit has a plurality of converter switches that can be controlled by the control unit and a switching arrangement that can be controlled by the control unit, whereby the converter circuit is switched by means of the switching arrangement between a direct converter configuration and a start converter configuration,whereby the control unit is adapted to control the converter circuit in the direct converter configuration depending on the voltage profile at the converter input in order to set an alternating voltage with a preset frequency at the converter output.2. The operating circuit according to claim 1 ,wherein the control unit is adapted to control the converter circuit in the direct converter configuration depending on the voltage profile at the converter input in order to set an AC voltage with a preset voltage value at the converter output.3. The operating circuit according to claim 1 ,wherein the ...

SYNCHRONOUS ELECTRIC POWER DISTRIBUTION STARTUP SYSTEM

A system includes a synchronous generator coupled to an excitation system. The excitation system may output an excitation signal to excite the synchronous generator to produce a voltage and a current at an output of the synchronous generator. During startup, when the synchronous generator is rotating at less than rated speed, non-rotating synchronous electric motors may be electrically coupled to the synchronous generator. A controller may direct the excitation system to output the excitation signal to generate, with the synchronous generator, a first magnitude of current flow, and the synchronous motor loads are non-rotational in response to receipt of the first magnitude of current flow. In addition, the controller may selectively direct output of a pulse of the excitation signal, when the synchronous generator is rotating at less than rated speed, to urge the non-rotating synchronous motor loads into rotational electrical alignment with the synchronous generator and each other. 1. A system comprising:a synchronous generator rotatable by a prime mover;a controller configured to provide excitation signals to the synchronous generator to excite the synchronous generator to output electric power;a controller configured to provide an excitation signal at a first magnitude, during rotation of the synchronous generator at a speed less than rated speed, to supply a load bus with a first magnitude of current flow, the load bus electrically connected to a plurality of synchronous motor loads that are non-rotational in response to receipt of the first magnitude of current flow;the controller further configured to determine a rotating rotor position of the synchronous generator during rotation of the synchronous generator at less than the rated speed and a rotor position of at least one of the synchronous motor loads;the controller further configured to provide a pulse of the excitation signal at a second magnitude, the pulse provided coincident with a predetermined relative ...

METHOD AND ARRANGEMENT FOR ACTUATING POWER PACK

A dual actuated power pack () comprises a battery () and first () and second () electric motors, as well as a power generator (). The first electric motor () is powered by the battery () and the second electric motor () by a grid (). The first and second electric motors () are mechanically coupled () with each other so that when said second electric motor () is powered, said second electric motor () actuates () said power generator () and said first electric motor () at the same time, whereupon the first electric motor () functions as a hi-power battery charger and recharge the battery () when said second electric motor () actuates () the power generator (). When the second electric motor is not used, the first electric motor () is powered (), and the power generator () is actuated () by said first electric motor (101). 2. The dual actuated power pack of claim 1 , wherein said first and second electric motors and said power generator is arranged so that the second electric motor is mechanically coupled at its first end with the power generator and at its second end with said first electric motor.3. The dual actuated power pack of claim 1 , wherein said mechanic coupling is implemented by a shaft claim 1 , clutch or chain or belt or may comprise a gear box in order to arrange the outputted speed range of said first and/or second electric motor for the speed range of the power generator.4. The dual actuated power pack of claim 1 , wherein said power generator comprises a converter for converting energy received from said first and second electric motors to movement of a medium claim 1 , such as movement of an air or fluid claim 1 , like oil.5. The dual actuated power pack of claim 4 , wherein said power generator comprises a pump claim 4 , hydraulic pump or hydraulic power pack claim 4 , or a compressor claim 4 , air compressor or a pneumatic power pack.6. The dual actuated power pack of claim 1 , wherein said second electric motor is typically an induction motor and ...

VARIABLE SPEED MAXIMUM POWER POINT TRACKING, SOLAR ELECTRIC MOTOR CONTROLLER FOR INDUCTION AND PERMANENT MAGNET AC MOTORS

Solar Motor Controller is an electronic device with DC power input terminals that may connect directly to solar PV panels, and output terminals that may connect directly to single or multiphase phase AC electric motors without requiring an energy storage subsystem. The Controller runs electric motors of many frequencies and is capable of interfacing to multiple voltages of solar PV panels with or without maximum power point tracking. The Controller may drive motors in water pumping, HVAC, refrigeration, compressors operation, blowers, machine tools, and many other applications; some controller applications may operate at motor speeds adjusted to conform to power available from attached solar panels. 1. A system comprises:an AC electric motor;at least one photovoltaic panel;a DC-DC converter coupled to receive power from the at least one photovoltaic panel and provide a second DC voltage;a variable-frequency motor drive coupled to receive the second DC voltage and provide AC power to the AC electric motor; anda microcontroller configured to regulate the second DC voltage and to use a maximum-power-point tracking firmware to adjust frequency of the variable frequency motor drive to optimize power output.2. The system of wherein the microcontroller is also configured to adjust a voltage of the AC power provided to the AC electric motor.3. The system of wherein the microcontroller is configured to adjust the voltage of the AC power provided to the AC electric motor with the voltage of the AC power increasing linearly with a frequency of the AC power.4. The system of wherein the microcontroller has firmware adapted to gradually increase the second DC voltage and a frequency of the AC power until the AC motor starts rotating claim 1 , and wherein the microcontroller recognizes that the AC motor has started rotating by detecting a change in current received from the at least one photovoltaic panel.5. The system of wherein the maximum power point tracking firmware comprises ...

Electric unit for a pump-storage power plant

A pumped-storage power plant is disclosed, such as an electric unit having a converter and a rotating electric synchronous machine. The converter is designed as a modular multilevel converter and the machine is directly connectable to the converter, wherein the converter has an adjustable voltage.

End Ring and Rotor Bar for Line Start Permanent Magnet Motor

A rotor for an LSIPM comprises a plurality of permanent magnets defining a number of poles (“P”) of the LSIPM, and a plurality of rotor bars spaced about the rotor defining a rotor bar area (“BA”). The rotor bars are formed of a conductive material having an associated conductivity (“σ”). End members are disposed on axial opposite ends of the rotor core. The end members are in electrical contact with the rotor bars. The end members are formed from a material having an associated conductivity (“σ”). Each end ring member has a minimum geometric cross sectional area (“ERA”) and outer diameter that generally corresponds to the rotor core outer diameter. The ERA is greater than 0.5 times the rotor bar area per the number of poles (BA/P) times a ratio of the rotor bar material conductivity to the end member material conductivity (σ/σ). 1. An electrical machine comprising:a stator;{'sub': 'RB', 'a rotor core having an outer diameter disposed within the stator, the rotor core comprising a plurality of permanent magnet defining a number of poles (P) of the machine, the rotor core further comprising a plurality of rotor bars spaced about the rotor core center axis, the rotor bars defining a rotor bar area (“BA”), the rotor bars being formed of a conductive material having a conductivity (σ); and'}{'sub': EM', 'RB', 'EM, 'end members disposed on axial opposite ends of the rotor core, the end members being in electrical contact with the rotor bars, the end members being formed from a material having an associated conductivity (σ), each end ring member having a minimum geometric cross sectional area (“ERA”), wherein the end members have an outer diameter that is generally equal to the rotor core outer diameter, and wherein the ERA is greater than about 0.5 times the rotor bar area per the number of poles (BA/P) times a ratio of the rotor bar material conductivity to the end member material conductivity (σ/σ).'}2. The machine of claim 1 , wherein the ERA is between about ⅔ times ...

PM Line-Start Motor and Switch-On Method Therefor

A PM line-start motor, preferably motors having a power of at least 5 kW, and a switch-on method therefor are provided. The motor includes a rotor and a stator having a stator winding designed as a pole-reversible rotary field winding. With the aid of the pole-reversible rotary field winding, the regenerative braking torque generated during the asynchronous high-run operation can be avoided, preferably by use of a sequence controller to control the changeover of the pole-reversible rotary field winding in the run-up phase.

AC MOTOR WITH STATOR WINDING TAP AND METHODS FOR STARTING AN AC MOTOR WITH A VARIABLE SPEED DRIVE

Methods for starting an AC motor with a variable speed drive and switching the motor to a higher voltage power source are described. Provided are AC motors with a stator having a plurality of coils, the plurality comprising a complete set of coils for each phase, the complete set comprising a first set of coils comprising first groups of coils connected in series, or parallel, or a combination, and a second set of coils comprising second groups of coils connected in series, or parallel, or a combination, wherein the output of a variable speed drive is connected to a tap on the complete set of coils such that the AC motor may be started with a variable speed drive, and an output of the power line is connected to the series of the first and second sets of coils. 1. An AC motor starting method , comprising:(a) providing power from a variable speed drive to an AC motor comprising:a stator winding with an arrangement of coils per phase;each of the arrangements of coils per phase comprises n subsets of coils, wherein n is the number of poles on the stator;each subset of coils comprises a first group of coils and a second group of coils, where the first groups of coils are connected to form a first set of coils and where the second groups of coils are connected to form a second set of coils;each subset of coils is configured such that the first group of coils is symmetrically disposed relative to a center of the subset and such that the second group of coils is symmetrically disposed relative to the first group of coils;a first end of the second set of coils is in operable connection with a power line;a second end of the second set of coils is connected in series to a first end of the first set of coils;a second end of the first set of coils is connected to a neutral point inside the AC motor;a tap is connected to the point where the first and second sets of coils are connected in series and is in operable connection with a variable speed drive;(b) accelerating the AC ...

Method for controlling medium-voltage inverter and system comprising the same

Disclosed herein are a method for controlling a medium-voltage inverter, and a system including the same. The system includes a motor, a medium-voltage inverter driving the motor, a control unit configured to control an output voltage from the medium-voltage inverter, and an output voltage measuring unit configured to measure counter electromotive force data of the motor including a voltage and a frequency of the counter electromotive force, and transmitting it to the control unit. The control unit generates the output voltage based on the measured counter electromotive force data to re-drive the motor when the output voltage measuring unit completes the measurement of the counter electromotive force data.

METHOD FOR CONTROLLING MULTIPLE MOTORS

In some embodiments, a method for controlling multiple motors to control a plurality of motors connected to a single inverter stably and efficiently is provided. The method may include calculating operation priorities of each of the plurality of motors on the basis of total cumulative operation time information of the plurality of motors, and controlling to operate or stop the plurality of motors on the basis of operation priorities of each of the plurality of motors. 1. In a multi-motor control system for controlling a plurality of motors through a single inverter , a method for controlling multiple motors , the method comprising:calculating operation priorities of each of a plurality of motors based at least on a total cumulative operation time information of the plurality of motors; andgenerating an electrical signal to operate or stop the plurality of motors based on at least the operation priorities of each of the plurality of motors.2. The method of claim 1 , wherein operating or stopping the plurality of motors comprises:operating at least one of the plurality of motors in order of higher operation priorities of the motors when additional operation of the motors is requested; andstopping operation of at least one of the motors in operation in order of lower operation priorities of the motors when stopping at least one of the motors in operation is requested.3. The method of claim 1 , wherein the operation priorities of each of the plurality of motors are in inverse proportion to the total cumulative operation time of each motor.4. The method of claim 1 , further comprising:changing operation from a first motor in operation to a second motor which is not in operation when a difference between a total cumulative operation time of the first motor with the longest total cumulative operation time among the motors in operation and a total cumulative operation time of the second motor with the shortest cumulative operation time among the motors which is not in ...

AIRCRAFT BRAKE COOLING FAN CONTROL SYSTEM

An aircraft includes a power source arranged to provide AC electrical power of varying frequency, and a brake cooling fan including an impeller which is driven by an electric motor powered by said AC electrical power for cooling brakes of the aircrafts wheels. The brake cooling fan has an operable mode when the frequency of said AC electrical power meets certain criteria indicating that the frequency of the AC power is suitable for powering the motor, and an inoperable mode to protect against unsuitable operation of the motor. The brake cooling fan may then be safely powered with AC power direct from a wild frequency power network on the aircraft without needing a power inverter or constant power supply generator. 1. An aircraft including:a power source arranged to provide alternating current (AC) electrical power of varying frequency, anda brake cooling fan including an impeller driven by an electric motor powered by the AC electrical power,wherein the brake cooling fan is arranged to have an operable mode selected when certain criteria are met, the criteria including whether the frequency of the AC electrical power is suitable for powering the motor, andthe brake cooling fan is arranged to have an inoperable mode selected when the certain criteria are not met and to protect against unsuitable operation of the motor.2. The aircraft according to claim 1 , wherein the certain criteria include whether or not the frequency is less than a maximum amount.3. The aircraft according to claim 1 , wherein the certain criteria include whether or not the frequency has been less than a threshold amount for a certain period of time.4. The aircraft according to claim 1 , wherein the aircraft is so arranged that the inoperable mode of the brake cooling fan is triggered if the frequency of the AC power is not suitable for powering the motor.5. The aircraft according to claim 1 , wherein the aircraft is so arranged that the inoperable mode of the brake cooling fan is triggered if the ...

THYRISTOR STARTING DEVICE AND CONTROL METHOD THEREFOR

A thyristor starting device includes: a converter which converts AC power supplied from an AC power source into DC power; a DC reactor which smooths a DC current; an inverter which converts the DC power provided from the converter into AC power, and supplies the AC power to a synchronous machine; a gate pulse generation circuit which generates a gate pulse to be provided to thyristors of the converter and the inverter; a control unit which sets a phase control angle of the gate pulse to be provided to the thyristors of the converter, by controlling a current of the converter such that the DC current flowing into the DC reactor matches a current command value; and an abnormality detection unit which compares a detection value of the DC current with the current command value, and determines an abnormality in the gate pulse based on a comparison result. 1. A thyristor starting device , comprising:a converter which converts AC power supplied from an AC power source into DC power;a DC reactor which smooths a DC current;an inverter which converts the DC power provided from said converter through said DC reactor into AC power, and supplies the AC power to a synchronous machine;a gate pulse generation circuit which generates a gate pulse to be provided to thyristors of said converter and said inverter;a control unit which sets a phase control angle of the gate pulse to be provided to the thyristors of said converter, by controlling a current of said converter such that the DC current flowing into said DC reactor matches a current command value; andan abnormality detection unit which compares a detection value of the DC current with said current command value, and determines an abnormality in said gate pulse based on a comparison result.2. The thyristor starting device according to claim 1 , further comprising:an AC current detector which detects an AC current supplied from said AC power source; anda rectification circuit which rectifies an output of said AC current detector ...

MOTOR DRIVING DEVICE INCLUDING INITIAL CHARGING UNIT

A motor driving device includes: a rectifier that rectifies an AC current and outputs a DC current to a DC link; an inverter unit that converts the DC current to an 1. A motor driving device , comprising:a rectifier that rectifies an AC current supplied from an AC power supply side and outputs a DC current to a DC link that is DC side;an inverter unit that includes a smoothing capacitor on the DC link side to which the rectifier is connected and converts a DC current from the rectifier and outputs an AC current for motor drive;an initial charging unit provided in the DC link and including a switch and a charging resistor connected in parallel to the switch, wherein during an initial charging period before the motor drive is started, the initial charging unit initially charges the smoothing capacitor up to a predetermined voltage with the DC current from the rectifier that flows through the charging resistor in response to the switch being opened;a storage unit that stores a resistance value of the charging resistor and a load capability that is pre-defined as an amount of power for causing the charging resistor to be fused off;a power calculation unit that calculates an average amount of power during a given time interval that is generated in the charging resistor in response to a DC current flowing from the rectifier; andan opening/closing unit configured, during the initial charging period, to shut off the DC current from the rectifier from flowing in the smoothing capacitor when the average amount of power calculated by the power calculation unit reaches the load capability, and allow the DC current from the rectifier to flow in the smoothing capacitor after the shutoff and when the average amount of power calculated by the power calculation unit is smaller than or equal to the predetermined threshold value.2. The motor driving device according to claim 1 , whereinthe motor driving device further comprises a DC voltage detection unit that detects a DC voltage ...

MULTIPLE DRIVE FOR A HEAVY-LOAD APPLICATION AND METHOD FOR OPERATING SUCH A MULTIPLE DRIVE

A multiple drive for a heavy load application includes a plurality of drive trains which are activated such that individual ones of the plurality of drive trains are successively activated automatically during startup of the heavy load application as part of a predefined activation strategy according to a predefined activation scheme and an activation sequence defined therein. In the event of a repeated start of the heavy-load application, a different activation scheme can be used for the activation. 110.-. (canceled)11. A multiple drive for a heavy load application , comprising a plurality of drive trains which are activated such that individual ones of the plurality of drive trains are successively activated automatically during startup of the heavy load application as part of a predefined activation strategy according to a predefined activation scheme and an activation sequence defined therein , wherein a different activation scheme is used when the startup of the heavy load application is repeated.12. The multiple drive of claim 11 , wherein the drive trains include a motor in the absence of an upstream main converter.13. The multiple drive of claim 11 , wherein the drive trains include a motor and a coupling operably connected to the motor and configured as a fluid coupling.14. A method for operating a multiple drive for a heavy load application claim 11 , comprising:automatically activating individual drive trains successively from a plurality of drive trains of the multiple drive during a startup of the heavy load application as part of a predefined activation strategy according to a predefined activation scheme and an activation sequence defined therein; andusing a different activation scheme when the startup of the heavy load application is repeated.15. The method of claim 14 , wherein during the startup of the heavy load application claim 14 , as part of the successive activation of the individual drive trains claim 14 , initially activating only one of ...

POWER CONTROL SYSTEM AND METHOD FOR HYBRID VEHICLE

A power control system for a hybrid vehicle is provided. The system includes a high-voltage battery that is capable of being charged or discharged, a first motor and a second motor, a first inverter connected to the first motor, and a second inverter connected to the second motor. Additionally, a converter has a first side connected to the battery and a second side connected in parallel to the first inverter and the second inverter and a diode is connected in parallel to both sides of the converter. A controller is configured to operate the converter and the first and second inverters to cause electric power of the high-voltage battery to be bypassed via the diode and directly supplied to the first inverter or the second inverter. 1. A power control system for a hybrid vehicle , comprising:a high-voltage battery capable of being charged or discharged;a first motor and a second motor;a first inverter connected to the first motor;a second inverter connected to the second motor;a converter having a first side connected to the battery and a second side connected in parallel to the first inverter and the second inverter;a diode connected in parallel to both sides of the converter; anda controller configured to operate the converter and the first and second inverters to cause electric power of the high-voltage battery to be bypassed via the diode and directly supplied to the first inverter or the second inverter.2. The power control system for the hybrid vehicle according to claim 1 , wherein the diode includes an anode connected to a positive terminal of the battery and a cathode connected to input terminals of the first inverter and the second inverter.3. The power control system for the hybrid vehicle according to claim 1 , wherein claim 1 , when the hybrid vehicle is in an electric vehicle (EV) mode without driving an engine claim 1 , the controller is configured to control a switch of the converter to cause electric power of the high-voltage battery bypassed via the ...

Motor driving device including single inverter for single-phase motor and three-phase motor and appliance having the same

A motor driving device controls a three-phase motor and a single-phase motor to operate in parallel. The motor driving device includes a dc terminal in which an upper and a lower DC-link capacitor are located. The motor driving device also includes a neutral terminal disposed between the upper and lower DC-link capacitors. The motor driving device includes an inverter that includes three pairs of upper switching elements and lower switching elements. Two pairs of upper switching elements and lower switching elements among three pairs are connected to a-phase terminal and b-phase terminal of the three-phase motor, respectively. The other pair of upper switching elements and lower switching elements among three pairs is connected to a first terminal of the single-phase motor. The neutral terminal is connected to c-phase terminal of the three-phase motor and a second terminal of the single-phase motor.

Aircraft engine electrical apparatus

Method and apparatus for controlling the operation of synchronous motor

A method and an apparatus for controlling the operation of the synchronous motor are disclosed in which the synchronous motor is started with a starting power supply and operated with a steadying power supply. The starting power supply is adapted to alternately repeat acceleration and deceleration of the synchronous motor in the neighborhood of the frequency thereby to bring the synchronous motor into the point where the synchronous motor is in synchronism with the steadying power supply. The starting power supply comprises a current control circuit and a phase angle control circuit, which circuits control the motor current in such a manner as to prevent the voltage drop due to the synchronous reactance of the motor from exceeding the induced voltage of the motor, while at the same time controlling the power factor angle to be in the range from a lead 90° to the angle corresponding to a maximum output point produced by said motor current.

Control Apparatus and Method of Dynamo-Electric Machine for Vehicle

시동전동기와 충전발전기의 성능을 갖는 회전전기의 발전모드전환에 있어서, 쇼크를 완화하는 것이 가능한 제어장치 및 제어법을 얻는다. In switching the power generation mode of a rotary electric machine having the performance of a starting motor and a charging generator, a control device and a control method capable of alleviating shock are obtained. 차량용 내연기관에 결합되어서 시동전동기 및 충전발전기로 기능하는 회전전기(1)와, 스위칭 소자 14 ~ 19로 된 인버터와, 회전전기(1)의 계자코일(4)을 제어하는 계자전류제어수단(5)과, 회전전기(1)가 충전발전기로 기능할 때, 저속회전역에서는 인버터에서 전기자 코일(3)에 교호로 전류를 공급해서 인버터 발전모드로 발전하고, 고속회전역에서는 계자코일(4)의 전류제어에 의한 얼터네이터 발전모드로 발전하도록 제어하는 제어수단(24)을 구비하고, 제어수단(24)에 의한 인버터 발전모드로부터 얼터네이터 발전모드로의 전환회전속도와, 얼터네이터 발전모드로부터 인버터 발전모드로의 전환회전속도에 히스테리시스를 갖게 한 것이다. Rotating electric machine 1 coupled to an internal combustion engine for a vehicle and serving as a starting motor and a charging generator, an inverter comprising switching elements 14 to 19, and a field current control means for controlling the field coil 4 of the rotating electric machine 1 5) and when the rotary electric machine 1 functions as a charging generator, in the low speed rotation region, the inverter alternately supplies current to the armature coil 3 to generate the inverter generation mode, and the field coil (4) at the high speed rotation region. Control means 24 for controlling the power generation to the alternator generation mode by the current control, and the rotation speed of switching from the inverter generation mode to the alternator generation mode by the control means 24, and the inverter generation from the alternator generation mode. The hysteresis is given to the rotation speed of the transition to the mode.

복수 고정자 유도 동기 전동기

내용 없음.

Motor control device

一种多电机电控系统的控制方法

本发明提供一种多电机电控系统的控制方法，包括电控系统，电控系统控制吊机左右两侧的左稳索系统、右稳索系统；电控系统包括冷却电路、刹车电路、电机控制电路和启动电路；本发明的继电器线圈9KM3与触头9K7.2、常闭触头9KM2.3相连；继电器线圈9KM2与常闭触头9K7.1、常闭触头9KM3.3相连；当左锁具电机M6启动时，触头9K7.2断开，常闭触头9KM2.3断开，这样左稳索电机M7无法得电启动；当左稳索电机M7启动时，常闭触头9K7断开，常闭触头9KM3.3断开，这样左锁具电机M6也无法得电工作；通过控制开关1K15的闭合、断开，切换控制左锁具电机M6、左稳索电机M7。

Электрическое устройство

1. Электрическое устройство летательного аппарата, содержащее блок управления стартерным электродвигателем для двигателя, выполненный с возможностью обеспечения входного переменного напряжения для блока трансформатор/выпрямитель, в котором частоту входного переменного напряжения выбирают так, чтобы она была выше, чем частота в шине питания переменного тока, из которой питание поступает в блок управления стартерным электродвигателем для двигателя.2. Устройство по п. 1, дополнительно содержащее блок трансформатор/выпрямитель для подачи питания в шину питания постоянного тока летательного аппарата, в котором блок управления стартерным электродвигателем для двигателя обеспечивает входное переменное напряжение для блока трансформатор/выпрямитель.3. Устройство по п. 2, дополнительно содержащее аккумуляторную батарею для подачи питания в шину питания постоянного тока при запуске двигателя.4. Устройство по п. 1, дополнительно содержащее средство контроля постоянного напряжения для измерения выходного напряжения из блока трансформатор/выпрямитель.5. Устройство по п. 4, в котором блок управления стартерным электродвигателем для двигателя выполнен с возможностью регулировать входное переменное напряжение, обеспечиваемое для блока трансформатор/выпрямитель, в ответ на выходное напряжение из блока трансформатор/выпрямитель, измеряемое средством контроля постоянного напряжения.6. Устройство по п. 1, в котором частота входного переменного напряжения является, по меньшей мере, 10-кратной частотой шины питания переменного тока.7. Устройство по п. 1, в котором частота входного переменного напряжения ниже, чем точка, в которой блок РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F02C 7/266 (13) 2015 107 830 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015107830, 06.08.2013 (71) Заявитель(и): САФРАН ПАУЭР ЮК ЛТД. (GB) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ДАДЛИ Нейл (GB) 09.08.2012 GB 1214246.9 (85) Дата ...

直流モ−タの起動制御方式

(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。

交流電動機の群起動制御装置

(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。

Drive apparatus and method for a press machine

구동 장치는 가동 부재, 제1 힘을 발생시키기 위한 적어도 하나의 선형 전기 액츄에이터, 및 제2 힘을 발생시키기 위한 적어도 하나의 선형 유압 액츄에이터를 포함한다. 적어도 하나의 선형 전기 액츄에이터 및 적어도 하나의 선형 유압 액츄에이터는, 결합력을 생성하기 위해 상기 제1 힘과 상기 제2 힘이 상기 가동 부재에 평행하게 작용하도록 배치된다. The drive device includes a movable member, at least one linear electric actuator for generating a first force, and at least one linear hydraulic actuator for generating a second force. The at least one linear electric actuator and the at least one linear hydraulic actuator are arranged such that the first force and the second force act in parallel with the movable member to generate a coupling force.

電動機の起動方法

(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。

用于将同步机与电压网络耦合的操作电路及操作它的方法

本发明涉及一种操作电路（10）和涉及一种用于操作电压供应网络（12）上的同步机（11）的方法。操作电路（10）具有转换器电路（15），转换器电路（15）带有多个可控的转换器开关（20）至（23）和可控的开关布置（30），可控的开关布置（30）适于在启动转换器配置（I）和直接转换器配置（II）之间切换所述转换器电路（15）。功率供应网络（12）被连接到转换器输出（14），并且同步机（11）被连接到转换器电路（15）的转换器输入（31）。在直接转换器配置（II）中，在转换器输出（14）处提供带有预设AC电压频率的AC电压。控制单元（16）控制转换器开关（20）至（23），使得在转换器输出（14）处的AC电压对应于需求。

Variable speed maximum power point tracking, solar induction electric motor controller, and permanent magnet AC motor

Peak-avoiding regulating method and device

本发明实施例提供一种错峰调节的装置及方法，所述装置包括：控制单元，用于接收到PWM信号后，根据预设时序依次控制不同的输出单元开始输出PWM信号，相邻两次输出的PWM信号相差T1时间，所述T1时间为所述PWM信号占空比增加时用电设备所需电流高于正常电流的时间；至少2个输出单元，每个输出单元分别连接有用电设备，用于根据所述控制单元的控制向对应的用电设备输出所述PWM信号。本发明实施例通过用电设备的错峰调节的工作模式，减少PWM信号占空比增加时用电设备对电源的需求，降低了系统设计的硬件成本。

Drive apparatus and method for a press machine

구동 장치는 가동 부재, 제1 힘을 발생시키기 위한 적어도 하나의 선형 전기 액츄에이터, 및 제2 힘을 발생시키기 위한 적어도 하나의 선형 유압 액츄에이터를 포함한다. 적어도 하나의 선형 전기 액츄에이터 및 적어도 하나의 선형 유압 액츄에이터는, 결합력을 생성하기 위해 상기 제1 힘과 상기 제2 힘이 상기 가동 부재에 평행하게 작용하도록 배치된다. The drive device includes a movable member, at least one linear electric actuator for generating a first force, and at least one linear hydraulic actuator for generating a second force. The at least one linear electric actuator and the at least one linear hydraulic actuator are arranged such that the first force and the second force act in parallel with the movable member to generate a coupling force.

Electric device

FIELD: electricity. SUBSTANCE: electric device of an aircraft comprises of a starter motor control unit for the engine, configured to supply an AC input voltage to a transformer/rectifier unit. Preferably, the device comprises of a transformer/rectifier unit for supplying electric power to the DC power bus of the aircraft, wherein the starter motor control unit provides an AC input voltage for the transformer/rectifier unit. EFFECT: invention makes it possible to improve the reliability of the electrical systems of an aircraft. 9 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 623 347 C2 (51) МПК F02C 7/266 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015107830, 06.08.2013 (24) Дата начала отсчета срока действия патента: 06.08.2013 (72) Автор(ы): ДАДЛИ Нейл (GB) (73) Патентообладатель(и): САФРАН ПАУЭР ЮК ЛТД. (GB) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: EP 0377328 A2, 11.07.1990. EP Приоритет(ы): (30) Конвенционный приоритет: 09.08.2012 GB 1214246.9 (45) Опубликовано: 23.06.2017 Бюл. № 18 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 10.03.2015 (86) Заявка PCT: EP 2013/066472 (06.08.2013) (87) Публикация заявки PCT: 2 6 2 3 3 4 7 (43) Дата публикации заявки: 27.09.2016 Бюл. № 27 0605780 A2, 13.07.1994. US 2004/080164 A1, 29.04.2004. US 6128204 A, 03.10.2000. RU 2049261 С1, 27.11.1995. SU 1456632 A2, 07.02.1989. R U 23.06.2017 2 6 2 3 3 4 7 R U C 2 C 2 WO 2014/023726 (13.02.2014) Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" (54) ЭЛЕКТРИЧЕСКОЕ УСТРОЙСТВО (57) Формула изобретения 1. Электрическое устройство летательного аппарата, содержащее блок управления стартерным электродвигателем для двигателя, выполненный с возможностью обеспечения входного переменного напряжения для блока трансформатор/выпрямитель, в котором частоту входного переменного напряжения выбирают так, чтобы она была выше, чем ...

Hybrid outdoor power equipment

Hybrid power equipment comprising a user-selectable power selection switch for switching between DC or AC power, a boost and conserve feature for increasing speed of the working elements as necessary, and a motor or a plurality of motors for moving working elements. Running the OPE at the conserve setting prolongs battery pack duration per charge. The motor may comprise a dual coil commutator configuration. Power supply and control systems allow the user to select operation of the plurality motors or dual coil commutators in either series or parallel configuration depending on the power source.

Device provided with plural dc motors

(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。

Circuit for preventing excitation winding from overvoltage in starting operation process of synchronous motor

本发明公开了一种同步电动机启动运行过程防止励磁绕组过电压电路，包括励磁绕组，励磁绕组的两端连接励磁电源控制电路的励磁电压正负极输出在励磁绕组形成正负极接入端，在励磁绕组正负极接入端并接一个二极管和电阻的串联电路，在二极管两端并联连接一个可控硅，一个触发驱动电路连接可控硅的触发极，在励磁绕组正负极接入端之间连接有电压传感器，所述电压传感器通过一个电压比较电路经触发控制器连接触发驱动电路，本发明结构简单，在励磁绕组上并接一个电压传感器和电压比较电路及触发控制器，将异步启动和同步运行程中励磁绕组感应的电压控制在较低电压范围内，从而保护励磁绕组在安全电压内。

Frequency conversion speed regulation method, storage medium and system for electric shovel

本发明提供一种电铲变频调速方法、存储介质及系统，其中的方法包括：根据电铲电机的速度环的饱和状态设置电流饱和标志符；获取所述电流饱和标识符，根据速度环目标转速值和速度环实际转速值以及设定调节参数得到速度环转速给定值；根据所述速度环转速给定值和所述速度环实际转速值得到速度环转速输出量；根据所述速度环转速输出量调整所述电铲电机的速度环转速。通过上述方案能够克服现有技术中变频调速系统速度环适应性差、速度超调量较大的缺点。

Single-phase AC synchronous motor and control method thereof

【課題】スタート時の振動発生を低減させること、複数同時起動を行う場合には、その消費電力を低減させること、同期回転へのさらなるスムーズな引き込みを行うこと、のいずれか１つまたは複数を達成すること。 【解決手段】制御部１９は、センサ３２の検出信号にしたがって起動用スイッチング素子２１〜２４をスイッチング制御すると共にモータコイル３０に通電する電圧のデューティを徐々に上げて通電電圧を徐々に上げていく第１の起動運転と、永久磁石ロータ３１の回転速度が同期回転速度近傍の所定回転速度に到達するとセンサ３２の検出信号に代えて予め取得した単相交流電源２の周波数の情報に基づき生成された内部同期信号にしたがって起動スイッチング素子２１〜２４をスイッチング制御する第２の起動運転をし、その後に、同期運転へ移行する単相交流同期モータ１を構成する。 【選択図】図１ One or more of reducing vibration generation at the start, reducing power consumption when performing multiple simultaneous activations, and performing further smooth pull-in to synchronous rotation To achieve. A control unit 19 controls switching of activation switching elements 21 to 24 in accordance with a detection signal of a sensor 32, and gradually increases a duty of a voltage to be applied to a motor coil 30 to gradually increase an energization voltage. When the rotational speed of the permanent magnet rotor 31 reaches a predetermined rotational speed in the vicinity of the synchronous rotational speed, it is generated based on the frequency information of the single-phase AC power supply 2 obtained in advance instead of the detection signal of the sensor 32. The single-phase AC synchronous motor 1 that performs the second start-up operation for switching control of the start-up switching elements 21 to 24 according to the internal synchronization signal and then shifts to the synchronous operation is configured. [Selection] Figure 1

Motor drive circuit

필요한 릴레이의 개수를 저감하여 경량화 및 저원가화를 실현한 모터구동회로를 제공하는 것을 그 과제로 한다. An object of the present invention is to provide a motor driving circuit which reduces the number of necessary relays and realizes light weight and low cost. 그것을 해결하기 위한 수단으로 전원회로측 릴레이(2a)의 공통접점(5a)과 모터측 릴레이(12a)의 공통접점(15a)이 접속되어 있다. 또한 전원회로측 릴레이(2b)의 공통접점(5b)과 모터회로측 릴레이(12b)의 공통접점(15b)이 접속되어 있다. 그리고 전원회로측 릴레이(2a)(2b) 및 모터회로측 릴레이(12a)(12b)의 각 변환접점(6a)(6b) 및 (16a)(16b)은 ECU의 릴레이 변환신호에 의해 각각 따로 변환하도록 되어있다. 전원회로측 릴레이(2a)(2b)의 택일적 변환에 의해 각 모터회로(21∼24)로의 통전방향이 변환된다. As a means for solving the problem, the common contact 5a of the power supply circuit side relay 2a and the common contact 15a of the motor side relay 12a are connected. The common contact 5b of the power supply circuit side relay 2b and the common contact 15b of the motor circuit side relay 12b are connected. Each of the conversion contacts 6a, 6b and 16a, 16b of the power circuit side relays 2a and 2b and the motor circuit side relays 12a and 12b is separately converted by the relay conversion signal of the ECU. It is supposed to. The energization direction to each motor circuit 21-24 is changed by the alternative conversion of the power supply circuit side relays 2a and 2b.

Device for adaptive control of smooth launch of high-voltage electric drives

Изобретение относится к области электротехники и может быть использовано в нефтегазодобывающей и нефтеперерабатывающей отраслях промышленности, машиностроении, коммунальном хозяйстве и в иных отраслях народного хозяйства для автоматизации плавного пуска высоковольтных электродвигателей (мощностью до десятков МВт) напряжением 6-10 кВ. Техническим результатом является увеличение надежности работы всей схемы за счет обеспечения возможности запуска основного высоковольтного асинхронного электродвигателя напрямую от сети при выходе из строя низковольтного трехфазного регулятора напряжения (НТРН); оптимальное задание динамики разгона и регулирование частоты вращения основного высоковольтного асинхронного электродвигателя (ВАД), что повышает качество переходных процессов и процессов пуска основного ВАД; обеспечение минимума электромагнитных потерь в основном ВАД. Устройство адаптивного управления плавным пуском высоковольтных электроприводов содержит выключатели и шину питания, участки кабельных линий, высоковольтные асинхронные электродвигатели - резервный и основной. В устройство дополнительно введены основная линия автоматизации с дополнительными коммутационными аппаратами (контакторы и выключатели), понижающим и повышающим трансформаторами для согласования высокого напряжения (6 кВ) и низкого напряжения питания (0,4 кВ), низковольтный трехфазный регулятор напряжения, резервный участок кабельной линии с выключателем, контактором и магнитным пускателем, для запуска основного ВАД при выходе из строя НТРН, а для задания динамики разгона основного ВАД и регулирования частоты его вращения введены датчики частоты вращения, напряжения и тока статора и сумматор в цепи обратной связи и предусмотрен режим плавного пуска основного высоковольтного асинхронного электродвигателя. Система интеллектуально-фазового управления (СИФУ) получает информацию с датчиков частоты вращения, напряжения и тока статора и управляет основным (ВАД) по минимуму в нем электромагнитных потерь, что ...

Divided phase ac synchronous motor controller

분할 상 권선 회로는, 모터 분할 상 권선과, 상기 분할 모터 상 권선의 중간점에서 적어도 하나의 전력 스위치 및 직류(DC) 공급 회로를 모두 포함하는 전력 스위치 회로와, 적어도 하나의 전력 스위치가 온 상태로서 전도 중일 때 DC 전력 공급원의 붕괴를 방지하기 위한, 비-붕괴형 DC 전력 공급 구성요소를 포함한다. 상기 비-붕괴형 DC 전력 공급 구성요소는 상기 DC 전력 공급원에 전기적으로 연결되는 모터 분할 상 권선으로부터의 탭과, 상기 전력 공급원에 전력 공급을 위해 DC 전력 공급원에 연결되는 2차 상 코일 권선과, 분할 상 권선과 전력 스위치 회로 사이의 하나 이상의 저항기와, 상기 분할 상 권선과 상기 전력 스위치 회로 사이의 하나 이상의 제너 다이오드, 및/또는, 상기 전력 스위치 회로 내 적어도 하나의 전력 스위치가 온 상태로서 전도 중일 때 상기 전력 공급원의 붕괴를 방지하기 위해 상기 모터 분할 상 권선과 상기 전력 스위치 회로 간에 전압 강하를 생성하기 위한 전기 구성요소 중 하나 이상을 포함할 수 있다. The divided phase winding circuit includes a motor divided phase winding, a power switch circuit including both at least one power switch and a direct current (DC) supply circuit at an intermediate point of the divided motor phase winding, and at least one power switch is turned on. And a non-disintegrating DC power supply component to prevent collapse of the DC power supply when conducting as. The non-destructive DC power supply component includes a tap from a motor split phase winding electrically connected to the DC power supply, and a secondary phase coil winding connected to the DC power supply for supplying power to the power supply, At least one resistor between the divided phase winding and the power switch circuit, at least one Zener diode between the divided phase winding and the power switch circuit, and/or at least one power switch in the power switch circuit is in an ON state and is conducting. In order to prevent collapse of the power supply source, at least one of the electrical components for generating a voltage drop between the motor division phase winding and the power switch circuit may be included.

Power supply unit and method of multi-machine traction turnout conversion controller

本发明属于轨道交通信号技术领域，具体涉及一种多机牵引道岔转换控制器的供电单元及方法，其特征是：至少包括：两级或两级以上的转辙机电机，在两级转辙机电机之间有控制电路；控制电路用于使两级或两级以上的转辙机电机分时通过三相电源进行驱动；所述的控制电路是继电器，继电器包括电源驱动端和三组开关接点；所述的继电器电源驱动端与供电单元输出端电连接，所述的三组开关接点分别串接在前后两级转辙机电机电源端之间。这种多机牵引道岔转换控制器的供电单元及方法，以便能在多机牵引道岔转换控制器不增加外接电源的条件下实现多个电路的顺序启动。

Gas turbine engine starting method

FIELD: engine building. SUBSTANCE: invention relates to starter-generator devices for aircraft gas turbine engines and method of their start-up and can be used in power supply systems used in aircrafts, ships, other vehicles and autonomous objects. Main electric machine is a brushless synchronous generator with a damper cage, an exciter, a sub-exciter and a rotating rectifier are located in a common housing. Anchor of the main electric machine with anchor winding 3, inductor exciter with excitation winding 5, anchor of synchronous sub-exciter with anchor winding 7 are fixed on the body. On the shaft common for three machines there fixed are the salient poles of inductor 9 of the main electric machine with excitation winding 10, unit of rotary rectifier 11, armature of synchronous exciter with winding 13 and system of permanent magnets 14 of synchronous sub-exciter. EFFECT: implementation at the second stage of GTE start-up of synchronous operating mode of the main electric machine with damper cell as part of a three-stage synchronous generator without changing its design and complication of control devices. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 717 477 C1 (51) МПК F02N 11/14 (2006.01) H02P 1/50 (2006.01) F02C 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F02N 11/14 (2019.08); H02P 1/50 (2019.08); F02C 7/00 (2019.08) (21)(22) Заявка: 2019124156, 25.07.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 23.03.2020 (45) Опубликовано: 23.03.2020 Бюл. № 9 2 7 1 7 4 7 7 R U (56) Список документов, цитированных в отчете о поиске: RU 2680287 C1, 19.02.2019. RU 2524776 C1, 10.08.2014. RU 2000654 C1, 07.09.1993. (54) Способ запуска газотурбинного двигателя (57) Реферат: Изобретение относится к стартергенераторным устройствам для авиационных газотурбинных двигателей и способу их запуска и может быть использовано в системах электроснабжения, применяемых в летательных аппаратах, ...

Brushless Excitation System with Holding Current Resistor

내용 없음

Method and system for controlling a permanent magnet synchronous motor

公开了一种通过基于估计磁链以确定同步马达的转子位置来控制同步马达的方法。该方法包括将该马达的一个定子绕组的电压应用到一个传递函数。该传递函数包括一个S域积分运算和一个纠错变量。处理该传递函数的一个输出，以补偿在该传递函数中所引入的所述纠错变量。产生一个所估计的磁链；以及，基于所述磁链计算所述转子位置的角度。将所计算的转子位置输入到控制器，以控制该转子的位置或速度。

Method of starting synchronous engines with incorporated magnets (options)

FIELD: electrical engineering; power machine engineering. SUBSTANCE: invention relates to the field of electrical engineering and power machine engineering and can be used for direct asynchronous start-up of synchronous motors with incorporated magnets. Method of starting synchronous motors with incorporated permanent magnets in the first variant consists in that, starting is carried out by direct inclusion of the stator winding into the network, then, under the action of an asynchronous torque, the rotor is accelerated to a subsynchronous speed, and the transition from the subsynchronous speed to the synchronous speed occurs due to the action of the synchronizing moment, in accordance with the invention, before starting, the rotor of the synchronous motor with the incorporated permanent magnets is momentarily locked, brought into short circuit mode, the current density in the stator windings and the short-circuited rods of the rotor is increased, that way heating the stator and the rotor, because of which the permanent magnets are demagnetized and their magnetic field is reduced, at this moment, the rotor is pulled out of breaking and a direct asynchronous start is performed with the maximum possible starting torque, while the temperature of permanent magnets decreases with the acceleration of the rotor, the magnetic field of the permanent magnet is restored and the synchronous motor with the incorporated magnets enters synchronism. Method of starting synchronous motors with incorporated permanent magnets in the second variant consists in that the starting is carried out by directly connecting the stator winding to the network, under the action of an asynchronous torque, the rotor is accelerated to a speed close to the synchronous one, and the transition from the subsynchronous speed to the synchronous speed occurs due to the action of the synchronizing moment, according to the invention, before starting, the synchronous motor with the incorporated permanent ...

Asynchronous starting permanent magnet synchronous motor quick starting method based on torque characteristics

本发明公开了一种基于转矩特性的异步起动永磁同步电机快速起动方法，该方法将异步自起动与相位跳变式最大同步转矩起动有机结合。根据电机在起动过程中的转矩特性，利用最大永磁同步转矩弥补异步合成转矩的阶段性出力不足，以输出最大的转矩起动为目的实现电机的快速起动。本发明所述起动方法兼具了异步起动与最大同步转矩起动两种起动方式下电机所能提供的最大起动转矩，保证电机起动转矩的最大化，缩短起动时间，提高电机起动能力，有效避免异步起动永磁同步电机因发电制动转矩过大导致起动失败或起动后期无法牵入同步等问题。

Method and system for controlling a permagnent magnet synchronous motor

쇄교자속(flux linkage)을 추정한 것을 기초로 동기모터의 회전자 위치를 결정함으로써 동기모터를 제어하기 위한 방법이 개시되어 있다. 이 방법은 동기모터의 고정자 권선의 전압을 전달함수에 적용하는 단계를 포함한다. 전달함수는 에스(S)-도메인 통합연산 및 오차수정변수를 포함한다. 전달함수의 출력은 전달함수에 도입된 오차수정변수를 보상하기 위해서 처리된다. 추정한 쇄교자속이 발생되고 회전자 위치의 각도는 그 쇄교자속을 기초하여 계산된다. 계산된 회전자 위치는 동기모터의 위치나 속도를 제어하기 위해서 컨트롤러에 입력된다.

Control device and control method for rotating electrical machine for vehicle

A control apparatus and method for controlling an electric rotating machine for vehicle reduces shock at the time of switching power generation mode. The control apparatus include an electric rotating machine functioning as a starter motor and a charging generator 1, an inverter comprised of switching elements 14 to 19, a field current controller 5 for controlling an electric current of a field coil 4 of the electric rotating machine 1, and a controller 24 by which power is generated in an inverter generation mode in a low-speed rotation range and in an alternator generation mode in a high-speed rotation range. A hysteresis is established between a rotating speed in switching from the inverter generation mode to the alternator generation mode and a rotating speed in switching from the alternator generation mode to the inverter generation mode under the control of the controller 24.

Motor starting method

A motor starting method that starts a motor using an inverter (1) is provided with: a first step that controls the inverter (1) so that an average value of all the DC capacitor voltages follows a capacitor voltage command value that increases from a first voltage, which is greater than a voltage whereby the inverter (1) operates as a PWM converter, to a second voltage whereby an initial voltage (1) that the inverter (1) applies to a motor can be output; and a second step that controls, after the first step, and for a prescribed period of time, the voltages of each of the DC capacitors to follow the capacitor voltage command value that increases from the second voltage to the rated voltage of the DC capacitors, and that also controls a voltage, which increases from the initial voltage to the rated voltage of the motor, and which has a fixed frequency that is lower than the power supply frequency, to be output from the terminals of a three-terminal coupling reactor (12).

Motor starting method

【課題】モジュラーマルチレベルインバータを用いてモータを安定に始動させるモータ始動方法を実現する。 【解決手段】インバータ１を用いてモータを始動させるモータ始動方法は、インバータ１がＰＷＭ変換器として動作する電圧値よりも大きい第１の電圧値からインバータ１がモータに印加する初期電圧値を出力することができる第２の電圧値まで増加するコンデンサ電圧指令値に、直流コンデンサ全ての電圧を平均した値を追従させるようインバータ１を制御する第１のステップと、第１のステップの後、所定の時間期間に亘って、第２の電圧値から直流コンデンサの定格電圧値まで増加するコンデンサ電圧指令値に、各直流コンデンサの電圧を追従させるよう制御するとともに、初期電圧値からモータの定格電圧値まで増加する電源周波数よりも小さい一定周波数を有する電圧が、３端子結合リアクトル１２の端子から出力されるよう制御する第２のステップと、を備える。 【選択図】図１

Control of an electric machine of a system with multiple electric machines

本发明涉及带多电机的系统的电机的控制，属于车辆技术领域。本发明公开的带多电机的系统的电机控制方法用于控制所述多电机的第一电机和第二电机在起动阶段加速至相应的目标转速，所述电机控制方法包括差速控制步骤：控制所述第二电机在其差速起动阶段内相对第一电机不在相同时刻具有相同的转速，其中，所述差速起动阶段包括所述第二电机从零转速加速至其目标转速的30%的起动阶段。本发明能够提升带多电机的系统在起动阶段的NVH性能，可以提高乘客体验。

Drive and control device for at least one commutator motor

A drive and control device for at least one commutator motor, a measurement device (consisting of a measurement element and a filter for identification of the commutator transitions) being connected to the supply lead of each commutator motor, downstream of which measurement device a counter for the commutator transitions is arranged which counter, for its part, is connected to a comparator for the actuating movement, which comparator has a required value input of a control device and whose output is connected to a switching mechanism for controlling the commutator motor.

A kind of online soft starting device of motor

本发明提供一种在线软启动装置，包括壳体，设于壳体上的显示器，设于壳体内并与显示器通信连接的主控器，设于壳体上并与电机相连的功率驱动器，其特征在于主控器包括主控CPU、驱动发生器，以及分别与主控CPU、驱动发生器相连的触发驱动器，该触发驱动器与驱动输出器相连，驱动输出器与功率驱动器相连，和分别与主控CPU、驱动发生器相连的缺相检测器、过零检测器及过流检测器，缺相检测器、过零检测器及过流检测器与功率驱动器的三相交流电输入端相连，与主控CPU相连的触发控制器，该触发控制器与触发驱动器相连。可对软启动的开启、停止以及整个软启动过程、缺相、过零或/和过流，温度、电压、电流进行监控，确保电机安全。支持手机、IPAD、MODBUS等网络通信。

Start controller of rotary electric machine

(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。

Controller of synchronous ac motor with divided phase

FIELD: electrical engineering. SUBSTANCE: invention relates to electrical engineering, namely to synchronous engine controllers with separated phases and rotor position sensors, containing at least one power switch with a control device and DC power supply in the middle point of the separated phase windings of the engine, equipped with a component of uninterrupted power supply. Uninterrupted DC power supply component contains at least one outlet from the separated phase windings of the engine and prevents losses of power supply, when at least one power switch is switched and is in the conducting state. EFFECT: technical result consists in the improvement of efficiency and manufacturability. 53 cl, 24 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 614 531 C2 (51) МПК H02P 27/00 (2006.01) H02P 23/00 (2006.01) G05F 1/00 (2006.01) H02K 29/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015122626, 14.11.2013 (24) Дата начала отсчета срока действия патента: 14.11.2013 (72) Автор(ы): ФЛИНН Чарльз Дж. (US), ТРЭЙСИ Купер Н. (US) (73) Патентообладатель(и): КьюЭм ПАУЭР, ИНК. (US) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 2011018480 A1, 27.01.2011. US Приоритет(ы): (30) Конвенционный приоритет: 14.11.2012 US 61/726,550 (45) Опубликовано: 28.03.2017 Бюл. № 10 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.06.2015 (86) Заявка PCT: US 2013/070208 (14.11.2013) (87) Публикация заявки PCT: 2 6 1 4 5 3 1 (43) Дата публикации заявки: 10.01.2017 Бюл. № 1 6563720 B2, 13.05.2003. US 5375053 A, 20.12.1994. RU 2439774 C1, 10.01.2012. SU 1617554 A1, 30.12.1990. R U 28.03.2017 2 6 1 4 5 3 1 R U Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) КОНТРОЛЛЕР СИНХРОННОГО ДВИГАТЕЛЯ ПЕРЕМЕННОГО ТОКА С РАЗДЕЛЕННОЙ ФАЗОЙ (57) Формула изобретения 1. Схема для двигателя, содержащая: разделенные ...

power converter

Method for starting powerful inductive load from self-contained voltage inverters

FIELD: electrical equipment; mechanics. SUBSTANCE: invention relates to methods and can be used for start-up of asynchronous AC motors. Method, which enables to perform independent cold start-up and power supply of powerful inductive load, in particular, containing asynchronous motor, from independent power sources (voltage inverters), differs by the fact that the solution is achieved by the method of resistor limitation by the specified time of the amplitude of the starting current of the load motor below the value of operation of protection of VI (UPS), but not lower than the value at which the engine can still start and unwind, and which can be used in the form of a simple circuit design with voltage inverters and uninterrupted power supplies of medium and high power. EFFECT: technical result is provision of cold start and power supply (if necessary) from independent current sources (VI and UPS) – such household electric appliances as refrigerators, circulating pumps, powerful fans, air conditioners, et cetera, id est having above-mentioned asynchronous motor. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 693 835 C1 (51) МПК H02P 1/28 (2006.01) H02P 1/50 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H02P 1/28 (2019.02); H02P 1/50 (2019.02) (21)(22) Заявка: 2018128099, 31.07.2018 (24) Дата начала отсчета срока действия патента: 05.07.2019 Приоритет(ы): (22) Дата подачи заявки: 31.07.2018 (56) Список документов, цитированных в отчете о поиске: RU 2422977 C1, 27.06.2011. RU (45) Опубликовано: 05.07.2019 Бюл. № 19 2 6 9 3 8 3 5 R U 2572097 С1, 27.12.2015. RU 2407139 C2, 20.12.2010. RU 4719 U1, 10.08.2005. JP 2008187763 A, 14.08.2008. KR 20110008666 A, 27.01.2011. US 5969497 A1, 19.10.1999. US 20080258672 A1, 23.10.2008. WO 2015099992 A2, 02.02.2015. (54) Способ пуска мощной индуктивной нагрузки от автономных инверторов напряжения (57) Реферат: Изобретение относится к способам и может двигатель, от ...

Dual-stator induction synchronous motor

본 발명은 동기전동기에 관한 것으로, 기동토오크와 동기토오크가 크며, 더욱이 브러시가 필요없고, 보수점검이 용이하며 구조가 간단하고 전용의 기동기도 필요없는 동기전동기를 제공한다. The present invention relates to a synchronous motor, and provides a synchronous motor having a large starting torque and a synchronous torque, moreover, no need for a brush, easy maintenance, simple structure, and no dedicated starter.

Frequency converter, bypass frequency conversion control system and switching control method thereof

本发明提供一种变频器、旁路变频控制系统及其切换控制方法，属于电机驱动控制技术领域。本发明的变频器接入具有相应的第一频率和第一相位的电网电压信号，其中，所述变频器被配置为能够工作于跟踪同步状态，在所述跟踪同步状态下，所述变频器跟踪所述电网电压信号的第一频率和第一相位以使其输出的电压信号的第二频率和第二相位分别基本同步于所述电网电压信号的第一频率和相应的第一相位。本发明的变频器实现简单、成本低、同步速度快、同步性好。

Control method for sensorless permanent magnet synchronous motor (PMSM)

Brushless excitation system with a holding current resistor

ABSTRACT OF THE DISCLOSURE A brushless excitation system for a synchronous motor with a holding current resistor connected across the motor field winding to insure turning on of a semiconduc-tor excitaton control switch due to a gating pulse of limited duration.

Electrical apparatus

An aircraft electrical apparatus comprises an engine starter motor control unit (1) configured to provide an AC input voltage to a transformer rectifier unit (2). Preferably, the apparatus comprises a transformer rectifier unit (2) for supplying power to an aircraft DC supply bus (4), wherein the engine starter motor control unit (1) provides the AC input voltage to the transformer rectifier unit (2).

Optimal supply of an electric motor.

BRUSHLESS DRIVING SYSTEM FOR ELECTRODYNAMIC MACHINE

LE SYSTEME D'EXCITATION SANS BALAIS SELON LA PRESENTE INVENTION POUR UN MOTEUR SYNCHRONE, COMPORTE UNE RESISTANCE 36 D'ETABLISSEMENT DE COURANT DE MAINTIEN MONTEE AUX BORNES DE L'ENROULEMENT DE CHAMP 22 DU MOTEUR POUR ASSURER LA COMMUTATION DANS L'ETAT CONDUCTEUR D'UN INTERRUPTEUR 32 DE COMMANDE D'EXCITATION A SEMI-CONDUCTEUR SOUS L'EFFET D'UNE IMPULSION DE DECLENCHEMENT D'UNE DUREE LIMITEE. THE BRUSHLESS EXCITATION SYSTEM ACCORDING TO THE PRESENT INVENTION FOR A SYNCHRONOUS MOTOR INCLUDES A HOLDING CURRENT ESTABLISHMENT RESISTOR 36 MOUNTED AT THE TERMINALS OF THE FIELD WINDING 22 OF THE MOTOR TO ENSURE THE SWITCHING IN THE DRIVER STATE. A SWITCH 32 FOR A SEMICONDUCTOR EXCITATION CONTROL UNDER THE EFFECT OF A TRIP PULSE OF A LIMITED TIME.

ASSEMBLY COMPRISING A SWITCH SYSTEM, A SYNCHRONOUS MACHINE AND A VARIATOR

La présente invention concerne un ensemble (1) comportant : - un variateur de fréquence (3), - une machine électrique synchrone (2) comportant un rotor et un stator, et - un système de commutation (4) configuré pour relier électriquement la machine électrique synchrone (2) à un réseau électrique (100), le stator comportant un enroulement électrique principal (16) relié au système de commutation de façon à être alimenté par le réseau (100) et un enroulement électrique auxiliaire (17) relié à un variateur de fréquence (3), le système de commutation (4) étant agencé pour connecter l'enroulement électrique principal (16) au réseau (100) lorsque ledit enroulement a une tension, une fréquence et/ou une phase proche(s) de la tension, de la fréquence et/ou de la phase du réseau (100). The present invention relates to an assembly (1) comprising: - a frequency converter (3), - a synchronous electric machine (2) comprising a rotor and a stator, and - a switching system (4) configured to electrically connect the machine synchronous electric motor (2) to an electrical network (100), the stator comprising a main electric winding (16) connected to the switching system so as to be supplied by the network (100) and an auxiliary electric winding (17) connected to a frequency converter (3), the switching system (4) being arranged to connect the main electrical winding (16) to the network (100) when said winding has a voltage, a frequency and / or a phase close to the voltage, frequency and / or phase of the network (100).

TURBOMACHINE GENERATOR STARTER AND METHOD FOR CONTROLLING THE SAME.

Un démarreur-générateur de turbomachine comprend une machine électrique principale (20) ayant un stator et un rotor (22) avec un inducteur rotorique bobiné et des barres d'amortissement formant une cage et une excitatrice (30) ayant un inducteur statorique et un rotor avec des enroulements rotoriques reliés à l'inducteur rotorique de la machine électrique principale via un redresseur tournant (36). Au moins lors d'une première étape de la phase de démarrage, la machine électrique principale (20) est commandée en mode moteur asynchrone en injectant un courant alternatif dans ses enroulements statoriques, un couple de démarrage étant engendré au moyen des barres d'amortissement sans contribution de l'inducteur rotorique de la machine électrique principale à la génération du couple de démarrage. Lors d'une deuxième étape suivante de la phase de démarrage, la machine électrique principale (20) peut être commandée en mode moteur synchrone en injectant un courant alternatif dans ses enroulements statoriques tout en alimentant son inducteur rotorique en courant continu via l'excitatrice (30), le passage de la première à la deuxième étape de la phase de démarrage étant commandé lorsque la vitesse de rotation de l'arbre atteint une valeur prédéterminée. A turbomachine starter-generator comprises a main electric machine (20) having a stator and a rotor (22) with a coiled rotor inductor and damping bars forming a cage and an exciter (30) having a stator inductor and a rotor with rotor windings connected to the rotor inductor of the main electric machine via a rotary rectifier (36). At least during a first step of the start-up phase, the main electric machine (20) is controlled in asynchronous motor mode by injecting an alternating current into its stator windings, a starting torque being generated by means of the damping bars. without the contribution of the rotor inductor of the main electric machine to the generation of the starting torque. In ...