Power converter device and driving method thereof

A leg includes: two semiconductor device groups connected in series and a division current is generated in a current which flows in the semiconductor device group between elements in the semiconductor device groups, a current sensor which detects a current which flows in the semiconductor device group, a voltage command generation unit which calculates a voltage command value to be outputted, a voltage drop calculating unit which calculates a voltage drop of the semiconductor device group by using a current value which is detected by the current sensor and voltage drop characteristics including a division characteristic of the semiconductor device group, and a switching control unit which corrects a voltage command value which is generated by the voltage command generation unit by using the voltage drop which is calculated so as to control ON/OFF of the switching element.

High-precision oscillator systems with feed forward compensation for ccfl driver systems and methods thereof

System and method for generating one or more ramp signals. The method includes an oscillator configured to generate at least a clock signal, and a ramp signal generator configured to receive at least the clock signal and generate a first ramp signal. Additionally, the ramp signal generator is coupled to a first resistor including a first terminal and a second terminal. The first resistor is configured to receive an input voltage at the first terminal and is coupled to the ramp signal generator at the second terminal. Moreover, the first resistor is associated with a first resistance value. Also, the clock signal is associated with at least a predetermined frequency. The predetermined frequency does not change if the input voltage changes from a first magnitude to a second magnitude. The first magnitude is different from the second magnitude.

CONTROL UNIT FOR AN INVERTER LOADED BY A RESONANT LOAD NETWORK

An inverter may include at least two switching means for feeding a series oscillator circuit from a source, wherein a control device of the inverter controls the switching means in such a way that: in a first mode A, the inverter feeds the oscillator circuit via the switching means from the source; and in a second mode B, the oscillator circuit is decoupled from the source, wherein the control device switches back and forth between the two modes A and B to set a reference current in the oscillator circuit or a reference voltage on the oscillator circuit. 1. An inverter including:at least two switching devices configured to feed a series oscillator circuit from a voltage source, and in a first mode A, the inverter feeds the oscillator circuit via the switching means from the source, and', 'in a second mode B, the oscillator circuit is decoupled from the source,, 'a control device configured to control the switching devices in such a way that'}wherein the control device is operative to switch back and forth between the two modes A and B to set a reference current in the oscillator circuit or a reference voltage on the oscillator circuit,wherein, during operation to feed the series oscillator circuit from the voltage source, the control device is operative to deactivate or to release for deactivation at least one of the switching devices on reaching or understepping a predetermined current threshold value, or to adjust a control signal to de-activate at least one of the switching devices, wherein the current threshold values are selected in such a way that a switching frequency of control signals controlling the switching devices determines an operating frequency of the steady-state oscillator circuit in mode A, wherein a resonant frequency of the oscillator circuit is less than the switching frequency of the control signals, andwherein the inverter includes a bridge circuit including two or four of the switching devices configured such that the inverter operates in ...

ADAPTIVE INDUCTIVE POWER SUPPLY

A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable of modifying the resonant frequency of the tank circuit, the inverter frequency, the inverter duty cycle or the rail voltage of the DC power source. 1. A method for controlling operation of an inductive power supply system , comprising the steps of:establishing an inductive coupling between an inductive power supply and a remote device, the inductive power supply having a controller;dynamically adjusting a resonant frequency of the inductive power supply, when the remote device is inductively coupled with the inductive power supply, to achieve an optimal operating configuration for the inductive power supply, wherein the controller is configured to control dynamic adjustments in the resonant frequency.2. The method of wherein the inductive power supply system includes a DC source having a rail voltage and an inverter with an operating frequency and duty cycle claim 1 , wherein the controller is operably coupled to the DC source and the inverter claim 1 , said method further comprising adjusting claim 1 , via the controller claim 1 , at least one of the operating frequency of the inverter claim 1 , a duty cycle of the inverter claim 1 , and a rail voltage of the DC source claim 1 , wherein the inductive power supply includes a drive circuit operably coupled to the inverter claim 1 , wherein the drive circuit is adapted to regulate the operating frequency of the inductive power supply claim 1 , wherein the drive circuit is adapted to regulate the duty cycle of the inductive power supply; andrepeating said step of adjusting at least one of an operating frequency of the inverter, a duty cycle of the inverter and a rail voltage of the DC source during operation of the ...

THREE-LEVEL INVERTER AND POWER SUPPLY EQUIPMENT

The present application provides a three-level inverter and power supply equipment, including: a first IGBT, where a collector thereof is connected to a positive direct current bus, an emitter thereof is connected to a first connection point, and the collector and the emitter are bridge-connected to a first freewheeling diode; a second IGBT, where a collector thereof is connected to the first connection point, an emitter thereof is connected to a second connection point, and the collector and the emitter are bridge-connected to a second freewheeling diode; a third IGBT, where a collector thereof is connected to the second connection point, an emitter thereof is connected to a third connection point, and the collector and the emitter are bridge-connected to a third freewheeling diode; a fourth IGBT, where a collector thereof is connected to the third connection point, an emitter thereof is connected to a negative direct current bus. 1. A three-level inverter , comprising:a first insulated gate bipolar transistor (IGBT), wherein a collector of the first IGBT is connected to a positive direct current bus, an emitter of the first IGBT is connected to a first connection point, and the collector and the emitter of the first IGBT are bridge-connected to a first freewheeling diode;a second IGBT, wherein a collector of the second IGBT is connected to the first connection point, an emitter of the second IGBT is connected to a second connection point, and the collector and the emitter of the second IGBT are bridge-connected to a second freewheeling diode;a third IGBT, wherein a collector of the third IGBT is connected to the second connection point, an emitter of the third IGBT is connected to a third connection point, and the collector and the emitter of the third IGBT are bridge-connected to a third freewheeling diode;a fourth IGBT, wherein a collector of the fourth IGBT is connected to the third connection point, an emitter of the fourth IGBT is connected to a negative ...

FLYBACK POWER SUPPLY, INVERTER AND ELECTRICALLY POWERED VEHICLE

Primary-side windings of the transformers (T,T,T) are connected in parallel to each other. A switch (SW) turns on/off primary side currents of the transformers (T,T,T). Each transformer (T,T,T) includes a plurality of secondary-side windings. 1. A flyback power supply comprising:a plurality of transformers; anda switch turning on/off primary side currents of the transformers,wherein primary-side windings of the transformers are connected in parallel to each other, andeach transformer includes a plurality of secondary-side windings.2. The flyback power supply according to claim 1 , wherein secondary-side winding numbers of the transformers are different from each other.3. A flyback power supply comprising:a plurality of first transformers;a plurality of second transformers; anda switch turning on/off primary side currents of the first and second transformers,wherein primary-side windings of the first transformers are connected in parallel to each other, andprimary-side windings of the second transformers are connected in series to each other and connected in parallel to the primary-side windings of the first transformers.4. An inverter comprising the flyback power supply according to .5. An electrically powered vehicle comprising the inverter according to .6. An inverter comprising the flyback power supply according to .7. An electrically powered vehicle comprising the inverter according to . The present invention relates to a flyback power supply, an inverter and an electrically powered vehicle having plural secondary-side outputs.A flyback type, a forward type, a push-pull type and a half/full bridge type are known for switching power supplies in which an input (primary side) and an output (secondary side) are insulated from each other. A transformer is used for insulation in all the types.Particularly, a flyback power supply has a small number of components, and is used as a compact/small capacity power supply of 100 W or less in capacity. When plural secondary- ...

Solid-State Power Control Method and Apparatus

With the disclosed device, a control method is set forth to control the flow of power between an electrical source and an electrical load. 1. An electronic power control system comprising:a single conductor for supplying circuit power, said conductor also providing a command voltage, said conductor coupled to a diode, a resistive element and a voltage regulator which, in the presence of an input current from said conductor, induces an output to power a drive, a circuit of said drive capable of issuing a non-mid-state, fast rise and fall time voltage output to a power semiconductor;wherein user supplied input voltage allows a semi-conductor to release the input of the drive circuit, thereby allowing for filtered voltage change at the input from a low state to a threshold state, at which time fast rise-time voltage is delivered to said power semiconductor and to series-coupled capacitive and resistive elements which feed back to the input to lock the input above or below a threshold voltage; andwherein the output drives said semi-conductor through a capacitor pumping circuit to induce a negative voltage bias in the semi-conductor input.2. The system of further comprising a clamping of the drive output by the feedback supplied input voltage when a voltage threshold state is reached.3. The system of further comprising small filtered voltage-level changes applied to the input of said drive to induce adaptive dither modulation (ADM)-regulation behavior to maintain a user-selectable criteria.4. The system of further comprising small filtered voltage-level changes applied to the input of said drive to induce ADM-regulation behavior to maintain a user-selectable load current.5. The system of claim 1 , wherein said power semiconductor may be single or multiple claim 1 , normally on or off claim 1 , N- or P-channel.6. The system of claim 1 , wherein a signal semiconductor in said drive circuit may be single or multiple claim 1 , normally on or off claim 1 , N- or P-channel.7. ...

METHOD FOR GENERATING HARMONICS FREE DC TO AC INVERTERS

This invention presents a method that generates a harmonics free AC voltage at a specific frequency, such as 60 Hz, from unregulated DC source by precisely biasing complementary push-pull NOMS and PMOS switches. The precise bias triggering pulse is continuous pulse that is created using a feedback linear regulator. Since the feedback linear regulator uses low power electronics such as op-amps and comparators, the bias triggering pulse is stepped up using low power step-up transformer for high voltage applications. The step-up transformer is used to step-up the bias triggering pulse at the output of the feedback amplifier to drive the solid state switches precisely so that the output is harmonic free sine wave. In order to minimize the power losses by the switches, two DC-DC converters are used to control the voltages across the NMOS and PMOS switches. One DC-DC converter generates a positive voltage that is connected to the drain of the NMOS switch; where its voltage follows the output voltage during the positive half cycle of the load's current. The other DC-DC converter generates a negative voltage that is connected to the drain of the PMOS switch and it follows the output voltage during the negative half cycle of the current. Hence, a power factor controller is not needed as the NMOS automatically conducts when the load current is positive and the PMOS automatically conducts when the load current is negative. This method is applicable to a single phase as well as three phase system, and for a standalone load as well as for grid connected load. Also, this method does not require the need for a high power filter or bulky inductors to remove the harmonics as the harmonics are removed by precisely biasing each switch during its conduction. 1. A method for delivering a harmonics free AC power from an unregulated DC power source which is comprising of: an unregulated DC voltage source , a positive voltage (V+) DC-DC converter , a negative voltage (V−) DC-DC Converter , ...

Switch Device for an Electric Motor, Control Device and Steering System

A switch device for an electric motor includes at least one half-bridge having two semiconductor switches to energize at least one phase of the electric motor on demand. The switch device further includes a drive device assigned to the semiconductor switches and configured to actuate the semiconductor switches in accordance with an activation signal. The driver device includes an oscillator to generate an operating clock frequency, an apparatus to receive a synchronization signal, and a device to adjust the operating clock frequency in accordance with the synchronization signal. 1. A switch device for an electric motor , comprising:at least one half-bridge having two semiconductor switches configured to energize at least one phase of the electric motor on demand; and an oscillator configured to generate an operating clock frequency,', 'an apparatus configured to receive a synchronization signal, and', 'an adjustment device configured to adjust the operating clock frequency in accordance with the synchronization signal., 'a driver device assigned to the two semiconductor switches and configured to actuate the two semiconductor switches in accordance with an activation signal, the driver device including2. The switch device as claimed in claim 1 , further comprising:a counter included in the adjustment device and configured to detect the operating clock frequency of the oscillator in accordance with the synchronization signal.3. The switch device as claimed in claim 1 , wherein:the oscillator is a voltage-controlled oscillator and the adjustment device is further configured to modify an input voltage of the oscillator to adjust the operating clock frequency.4. The switch device as claimed in claim 1 , wherein:the driver device further includes a data bus connection.5. The switch device as claimed in claim 1 , wherein the driver device is further configured to receive and transmit the activation signal in a daisy-chain series circuit.6. A control device for an electric ...

MULTI-WINDING SINGLE-STAGE MULTI-INPUT BOOST TYPE HIGH-FREQUENCY LINK'S INVERTER WITH SIMULTANEOUS/TIME-SHARING POWER SUPPLIES

A multi-winding single-stage multi-input boost type high-frequency link's inverter with simultaneous/time-sharing power supplies, having the circuit structure formed by connecting a plurality of mutually isolated high-frequency inverter circuits having an input filter and an energy storage inductor, a common output cycloconverter and filter circuit by a multi-input single-output high-frequency transformer. Each input end of the multi-input single-output high-frequency transformer is connected in one-to-one correspondence to the output end of each high-frequency inverter circuit. The output end of the multi-input single-output high-frequency transformer is connected to the input end of the output cycloconverter and filter circuit. The inverter has the following characteristics: multiple input sources are connected to a common ground or a non-common ground. The multiple input sources supply power to load in a simultaneous/time-sharing manner. The output and input high-frequency isolation is performed. The output cycloconverter and filter circuit is shared. 1. A multi-winding single-stage multi-input boost type high-frequency link's inverter with simultaneous/time-sharing power supplies , wherein , the inverter is formed by connecting a plurality of mutually isolated high-frequency inverter circuits having an input filter and an energy storage inductor , a common output cycloconverter and filter circuit by a multi-input single-output high-frequency transformer; each input end of the multi-input single-output high-frequency transformer is connected in one-to-one correspondence to an output end of each high-frequency inverter circuit; an output end of the multi-input single-output high-frequency transformer is connected to an input end of the output cycloconverter and filter circuit; each high-frequency inverter circuit with the input filter and the energy storage inductor comprises the input filter , the energy storage inductor , and a single-input single-output high- ...

SINGLE-STAGE MULTI-INPUT BUCK TYPE LOW-FREQUENCY LINK'S INVERTER WITH AN EXTERNAL PARALLEL-TIMESHARING SELECT SWITCH

A circuit structure of a voltage type single-stage multi-input low-frequency link inverter with an external parallel-timesharing select switch is formed by connecting a plurality of input filters connected to ground and a common output low-frequency isolation voltage-transformation filter circuit through a multi-input single-output high-frequency inverter circuit. Each input end of the multi-input single-output high-frequency inverter circuit is connected to an output end of each of the input filters in a manner of one-to-one correspondence. An output end of the multi-output single-input high-frequency inverter circuit and the output low-frequency isolation voltage-transformation filter circuit are connected. The multi-input single-output high-frequency inverter circuit includes an external multi-path parallel-timesharing select four-quadrant power switch circuit and a bidirectional power flow single-input single-output high-frequency inverter circuit successively connected in cascade. 1. A single-stage multi-input buck type low-frequency link's inverter with an external parallel-timesharing select switch , comprising: a plurality of input filters connected to a ground , a common output low-frequency isolation voltage-transformation filter circuit and a multi-input single-output high-frequency inverter circuit , wherein the plurality of input filters and the common output low-frequency isolation voltage-transformation filter circuit are connected by the multi-input single-output high-frequency inverter circuit; each input end of the multi-input single-output high-frequency inverter circuit is connected to an output end of each input filter in a manner of one-to-one correspondence; an output end of the multi-input single-output high-frequency inverter circuit is connected to an input end of a low-frequency transformer of the output low-frequency isolation voltage-transformation filter circuit , or an input end of an output filter inductor , wherein the input end of ...

Power conversion apparatus

A power inversion apparatus includes a smoothing capacitor, first and second primary coils, a secondary coil, first to fourth switches of bridge circuit switches, a clamp capacitor, and a switch controller. The switch controller calculates a lower-arm duty ratio of each of the first and second switches using a map or a mathematical expression by feed-forward control based on an input voltage. The switch controller outputs a fixed value that is equal to or greater than a maximum value of the lower-arm duty ratio within a variation range of the input voltage as an upper-arm duty ratio of each of the third and fourth switches. The switch controller generates a pulse width modulation signal based on the calculated lower-arm duty ratio and the fixed value of the upper-arm duty ratio, and outputs the pulse width modulation signal to the bridge circuit switches.

STEP UP/DOWN INVERTER CIRCUIT AND METHOD FOR CONTROLLING SAME

A step up/down inverter circuit () is provided with: a plus line () and a minus line () connected to the plus terminal and minus terminal of a DC power supply, respectively; a voltage dividing circuit (), a first leg (), and a second leg () which are disposed between the plus line () and the minus line (); a first reactor L, having one end connected to a first intra-leg wiring connecting the switching elements SW of the first leg (); a second reactor L, having one end connected to second intra-leg wiring connecting the switching elements SW of the second leg () and having the other end connected to the other end of the first reactor (L); a bidirectional switching element SW disposed between the first intra-leg wiring and a w-terminal (); another bidirectional switching element SW disposed between the second intra-leg wiring and a u-terminal (); and a smoothing circuit () for smoothing the voltages output from the bidirectional switching elements SW 1. A step up/down inverter circuit that converts DC power of a first voltage from a DC power supply into AC power of a second voltage , the step up/down inverter circuit comprising:plus and minus lines respectively connected to plus and minus output terminals of the DC power supply;a first leg disposed between the plus line and the minus line and having two switching elements connected in series;a second leg disposed between the plus line and the minus line and having two switching elements connected in series;a first reactor having one end connected to a first intra-leg wiring connecting the two switching elements of the first leg;a second reactor having one end connected to a second intra-leg wiring connecting the two switching elements of the second leg and having the other end connected to the other end of the first reactor;a first bidirectional switching element having one end connected to the first intra-leg wiring and having the other end connected to a first output terminal by a first output line;a second ...

Electromagnetic interference (emi) reduction in multi-level power converter

A multi-level power converter system includes a multi-level power converter configured to synthesize at least three direct current (DC) voltages into an alternating current (AC) output voltage, and includes a plurality of transistors. A controller generates pulse-width modulation (PWM) signals used to control a state of the plurality of transistors of the multi-level converter by comparing first and second carrier signals to a reference signals, wherein a period of the first and second carrier signals is randomly varied from a nominal period.

POWER CONVERTER

A power supply device for converting an AC power input into a DC power output comprises a rectifier module connected to the AC power input for producing rectified power; a final stage DC-DC converter for producing the DC power output; and one or more smoothing stages provided between the rectifier module and the final stage DC-DC converter to smooth the rectified power. There is an initial DC-DC converter module is provided between the rectifier and one of the smoothing stages to lower the voltage range of the output signal from the rectifier. The lowered voltage range of the rectified power is provided directly to the final stage DC-DC converter, without a power storage device storing the lowered voltage range rectified power. 1. A power supply device for converting an AC power input into a DC power output , comprising:a rectifier module connected to the AC power input for producing rectified power;a final stage DC-DC converter for producing the DC power output; andone or more smoothing stages provided between the rectifier module and the final stage DC-DC converter to smooth the rectified power; wherein an initial DC-DC converter module is provided between the rectifier module and one of the smoothing stages to lower a voltage range of an output signal from the rectifier module;wherein the lowered voltage range of the rectified power is provided directly to the final stage DC-DC converter, without a power storage device storing the lowered voltage range of the rectified power.2. A power supply device according to claim 1 , wherein one of the smoothing stages is provided between the initial DC-DC converter module and the final stage DC-DC converter.3. A power supply device according to claim 1 , wherein one or more of the smoothing stages comprises a capacitor.4. A power supply device according to claim 3 , wherein the capacitor is of a small enough value to perform voltage smoothing claim 3 , but is not large enough to remain substantially charged claim 3 , when ...

METHOD FOR GENERATING HIGHLY EFFICIENT HARMONICS FREE DC TO AC INVERTERS

This invention presents a highly efficient harmonics free DC-AC power inverter using a pair of push-pull switches with feedback loop that acts as a voltage regulator. The feedback loop voltage regulator uses a series-shunt feedback amplifier to regulate the output voltage by amplifying the error signal between a pure sine wave referenced signal and the measured output voltage signal. A step-up low power transformer is used to step-up the triggering pulse at gates of the push-pull solid state switches to the desired rated output voltage so that the output voltage becomes harmonic free sine wave, but high voltage feedback amplifier, if feasible, maybe used without using the transformer. The reference signal may be synchronized with the grid for on grid applications, but it can also be used for stand alone loads. In order to optimally minimized the conduction power loss across the push-pull solid state switches of the DC-AC inverter, the positive voltage V+ and the negative voltage V− must be regulated and controlled, so that the voltage across the push-pull switches are minimized. Hence, two DC-DC converters are used to generate the regulated voltages V+ and V−. Each of those voltages is controlled using a feedback loop that drives the pwm of the DC-DC converter. At this point, the conduction power loss of the DC-AC push-pull solid state switches are optimally minimized, but the DC-DC converters are not. In order to minimize the conduction power loss of the DC-DC converters, two multilevel converters with n-array series voltage sources, or n-array series capacitors, are used. The voltage level at the top of each capacitor is carefully selected so that the overall conduction power loss of the DC-DC converters is minimized. The power conduction power loss proportional to the number of levels used but this comes at higher cost and complexity. 1. A highly efficient harmonics free DC to AC inverter system that includes unregulated DC voltage source , that may be supplied ...

Charging Systems with Direct Charging Port Support and Extended Capabilities

An alternating current (AC) to direct current (DC) power converter may have a connector with a pair of power supply contacts and a pair of data contacts. An electronic device may be connected to the connector of the power converter. The power converter may supply DC power to the electronic device using the power supply contacts. The power converter may include control circuitry that has a resistor coupled across the data contacts. When the electronic device and the power converter are connected to each other, each may advertise to the other that capabilities are present that exceed industry standards. At the same time, standard-compliant discovery operations may be performed to probe the value of the resistance of the resistor that is coupled across the data contacts. When extended capabilities are discovered, extended functions may be performed including accelerated charging functions and data communications functions. 1. A power converter configured to supply power to external equipment , the power converter comprising:a connector having first and second power line contacts and first and second data line contacts;an alternating current (AC) to direct current (DC) converter circuit that is configured to supply the power to the external equipment by applying a DC power supply voltage across the first and second power line contacts when the connector is in connection with the external equipment; andcontrol circuitry that is configured to detect signal pulses received from the external equipment over the first data line contact when the connector is in connection with the external equipment, wherein the control circuitry is configured to determine whether the external equipment has capabilities that extend beyond standards-compliant capabilities based on the detected signal pulses, and wherein the control circuitry is configured to adjust the DC power supply voltage applied by the AC to DC converter circuit across the first and second power line contacts in response ...

Inverter Device

In a switching circuit in which a power semiconductor switching element and a unipolar type diode are connected in parallel, the noise due to ringing is reduced. When the main circuit current flowing is equal to or less than a predetermined value, an Si-IGBT is switched and driven by a gate resistance. In this case, when the main circuit current detected is equal to or more than a threshold value, a main circuit current detection circuit changes a gate resistance switching pMOS from ON state to OFF state. Accordingly, the Si-IGBT operates with a summation of a gate resistance and a gate resistor. More specifically, a gate resistance value of a gate drive circuit of the Si-IGBT increases. Therefore, dv/dt of the collector-emitter voltage of the Si-IGBT, i.e., the recovery dv/dt of the unipolar type diode, is small, and therefore, the noise due to ringing can be reduced.

Vehicle auxiliary power supply device and overcurrent protection method thereof

A vehicle auxiliary power supply device includes a resonant inverter circuit that converts DC input into a desired AC voltage and outputs the AC voltage and a control unit. The control unit includes a resonance-time managing unit managing resonance time of current flowing in the resonant inverter circuit, a gate-off-command generating unit detecting overcurrent flowing in the resonant inverter circuit based on detected current of a current detector, and, when the overcurrent is detected, generating, based on detected current of the current detector and resonance time managed by the resonance-time managing unit, a gate-off command to turn off switching elements included in the resonant inverter circuit after the elapse of time after which current flowing in the switching elements becomes zero for the first time, and a gate-signal generating unit generating a gate signal that controls the switching elements to be turned off when the gate-off command is input.

Method and apparatus for providing power

Embodiments of the subject invention are drawn to power supply units and systems for supplying power to loads. Specific embodiments relate to systems incorporating the loads. The power supply units and systems can include a feedback mechanism for monitoring the system and maintaining a parameter of interest at or near a desired value (e.g., for maintaining the frequency of operation at or near resonance). The feedback mechanism is configured such that, if the at least one parameter indicates that the frequency of operation is away from a resonant frequency of the power amplifier, the feedback mechanism adjusts the frequency of operation closer to the resonant frequency of the power amplifier. The at least one load can have a variable impedance, though embodiments are not limited thereto.

Single-phase power converter, three-phase two-phase power converter, and three-phase power converter

This power converter ( 1 ) is provided with: unit cells ( 11 -M) having a semiconductor switch, a DC capacitor (C) and a charge/discharge current I/O terminal; a first arm ( 12 -P) and a second arm ( 12 -N) comprising multiple unit cells ( 11 -M) connected to each other in cascade; an arm connecting unit ( 13 ) which has a first terminal to which the first arm ( 12 -P) is connected, a second terminal to which the second arm ( 12 -N) is connected, and a third terminal to which a DC power source is connected; and a transformer ( 14 ) which has an AC I/O terminal on the primary side and an intermediate terminal on the secondary side winding, and in which the terminal of the first arm ( 12 -P) and the terminal of the second arm ( 12 -N) are connected to the two end terminals on the secondary winding, and the DC power source (Vdc) is connected to the intermediate terminal.

INDUCTIVE POWER TRANSMITTER

An inductive power transmitter comprising: at least two switching elements connected across a resonant circuit, the resonant circuit including an inductance and a capacitance; wherein the transmitter is configured to adjust the value of the capacitance based on a desired operating frequency. 1. An inductive power transmitter comprising:at least two switching elements connected across a resonant circuit, the resonant circuit including an inductance and a capacitance;wherein the transmitter is configured to adjust the value of the capacitance based on a desired operating frequency.2. The transmitter in wherein the capacitance comprises a voltage-controlled variable capacitor.3. The transmitter in wherein the capacitance comprises a passive voltage-controlled variable capacitor.4. The transmitter in wherein the capacitance comprises two capacitors in series and a diode in parallel with a first of the capacitors.5. The transmitter in configured to receive a positive DC voltage at the positive terminal of the diode to adjust the value of the capacitance.6. The transmitter in configured to receive the positive DC voltage at a resistor connected the positive terminal of the diode.7. The transmitter in wherein the DC voltage is substantially inversely proportion to the operating frequency.8. The transmitter in wherein the at least two switching elements comprise an autonomous push pull inverter or a current fed push pull resonant inverter.9. The transmitter in wherein the inductance is in parallel with the capacitance10. An inductive power transfer system comprising:an inductive power transmitter, anda phase locked loop configured to control the operating frequency of the transmitter.11. The system in wherein the transmitter comprises at least two switching elements connected across a resonant circuit claim 10 , the resonant circuit including an inductance and a capacitance claim 10 , wherein the transmitter is configured to adjust the value of the capacitance based on a ...

Balancer Circuit

An apparatus includes a DC-to-AC converter comprising a first output terminal and a second output terminal. The apparatus also includes a DC-to-DC converter comprising a third output. The DC-to-AC converter is configured to receive a DC input voltage from a DC power source, and to produce a first alternating output voltage at the first output terminal, and a second alternating output voltage at the second output terminal. The DC-to-DC converter is configured receive a DC input voltage from the DC power source, and to step down the DC input voltage at the third output. 1. An apparatus comprising:a DC-to-AC converter comprising a first terminal and a second terminal; and wherein the DC-to-AC converter is configured to receive a DC input voltage from a DC power source, and to produce a first alternating output voltage at the first terminal, and a second alternating output voltage at the second terminal, and', 'wherein the DC-to-DC converter is configured to receive a DC input voltage from the DC power source., 'a DC-to-DC converter comprising a third terminal,'}2. The apparatus of claim 1 , wherein the DC-to-DC converter is configured to step down the DC input voltage by about half at the third terminal.3. The apparatus of claim 1 , wherein the DC-to-DC converter is a charge-pump circuit.4. The apparatus of claim 1 , wherein the DC-to-DC converter is a resonant switched capacitor circuit.5. The apparatus of claim 1 , further comprising a switching device claim 1 , wherein the switching device is configured to couple the DC-to-AC converter and the DC-to-DC converter to at least one electrical load.6. The apparatus of claim 5 , wherein the switching device is configured to couple a first group of electrical loads to the first terminal and a second group of electrical loads to the second terminal claim 5 , and wherein a first power demand is associated with the first group of electrical loads and a second power demand is associated with the second group of electrical ...

MODE 7 PUSH-PULL STRUCTURE WITH EXTERNAL PULSE WIDTH MODULATOR CONTROL

A circuit, comprising, a first high-side switch and a second high-side switch each receiving a source voltage, a first low-side switch and a second low-side switch, a first application specific integrated circuit (ASIC) connected to the first high-side switch and the first low-side switch, and a second ASIC connected to the second high-side switch and the second low-side switch, wherein the switches are connected to form an H-bridge circuit to generate a drive current, and wherein the first and second ASICs control the switches in a synchronized manner to cause current to flow through a load in one of a first direction and a second direction. 1. A circuit , comprising:a first high-side switch and a second high-side switch each receiving a source voltage;a first low-side switch and a second low-side switch;a first application specific integrated circuit (ASIC) connected to the first high-side switch and the first low-side switch; anda second ASIC connected to the second high-side switch and the second low-side switch;wherein the switches are connected to form an H-bridge circuit to generate a drive current; andwherein the first and second ASICs control the switches in a synchronized manner to cause current to flow through a load in one of a first direction and a second direction.2. The circuit in claim 1 , wherein each of the switches is metal-oxide-semiconductor (MOS).3. The circuit of claim 1 , wherein at least one ASIC includes a control logic block configured to provide a programmable high-to-low deadtime claim 1 , or a programmable low-to-high deadtime.4. The circuit of claim 1 , wherein the first ASIC has a first synchronization signal output and a first enable signal input claim 1 , the second ASIC has a second synchronization signal output and a second enable signal input claim 1 , the first synchronization signal output is connected to the second enable signal input and the second synchronization signal output is connected to the first enable signal input to ...

Method and Device for Controlling Power Semiconductor Switches Connected in Parallel

The disclosure relates to a method and a control device for controlling at power semiconductor switches connected in parallel for switching a total current. The semiconductor switches each have a gate terminal. An input terminal for feeding the total current, an output terminal for discharging the total current, and a joint control terminal for receiving a joint control signal that has the state ‘disconnect’ or ‘connect’ are provided. The power semiconductor switches are each connected between to the input terminal and the output terminal. At least one ascertainment unit is designed to receive the joint control signal, ascertain individual control signals in accordance with the joint control signal to control the individual power semiconductor switches, and output the individual control signals to the gate terminals of the power semiconductor switches. The individual control signals each have the state ‘disconnect’ or ‘connect’ and differ at least temporarily. 1. A method for controlling at least two power semiconductor switches connected in parallel for switching a total current , the at least two power semiconductor switches each having a gate terminal configured to control the respective power semiconductor switch , the method comprising:providing (i) an input terminal configured to feed the total current, (ii) an output terminal configured to conduct away the total current, and (iii) a common control terminal configured to receive a common control signal, the common control signal having an open state and a close state, the at least two power semiconductor switches each being connected to the input terminal on an input side of the respective power semiconductor switch and to the output terminal on an output side of the respective power semiconductor switch;receiving, with an input side of at least one ascertaining unit, the common control signal;ascertaining, with the at least one ascertaining unit, at least two individual control signals configured to control ...

BALANCER CIRCUIT

An apparatus includes a DC-to-AC converter comprising a first output terminal and a second output terminal. The apparatus also includes a DC-to-DC converter comprising a third output. The DC-to-AC converter is configured to receive a DC input voltage from a DC power source, and to produce a first alternating output voltage at the first output terminal, and a second alternating output voltage at the second output terminal. The DC-to-DC converter is configured receive a DC input voltage from the DC power source, and to step down the DC input voltage at the third output. 1. An apparatus comprising:an input capacitor connected between a first terminal and a second terminal;an output capacitor connected between the second terminal and a third terminal; a first switch connected between the first terminal and a first node;', 'a second switch connected between the first node and a second node;', 'a third switch connected between the second node and a third node; and', 'a fourth switch connected between the third node and the third terminal; and, 'a plurality of switches comprisingan inductor connected between the second node and the second terminal.2. The apparatus of claim 1 , wherein the apparatus is configured to convert an input alternating current (AC) voltage claim 1 , between the first terminal and the second terminal claim 1 , to an output AC voltage between the second terminal and the third terminal.3. The apparatus of claim 2 , wherein the output AC voltage is inverse of the input AC voltage.4. The apparatus of claim 1 , further comprising a resonant switched capacitor connected between the first node and the third node.5. The apparatus of claim 1 , further comprising a controller configured to turn on the first switch and the third switch at substantially a same time.6. The apparatus of claim 5 , wherein the controller is configured to turn off the third switch prior to turning off the first switch.7. The apparatus of claim 5 , wherein the controller is ...

Detection device, control device, and inverter device

A detection error occurs due to ripple when a current transformer detects zero cross of current. Provided is a detection device for detecting zero cross of output current output from switching circuit including a first switching element and a second switching element connected in series, and the detection device has: an acquisition unit which acquires an observation value that is based on gate current or an observation value based on gate voltage of at least one switching element of the first switching element and the second switching element, during Miller period in which Miller capacitance between a drain and a gate is charged; and a detection unit which detects zero cross of output current flowing between (i) output terminal between first switching element and second switching element and (ii) a load connect to output terminal, based on observation value during Miller period.

HIGH POWER BATTERY POWERED RF AMPLIFIER TOPOLOGY

The design of high-power RF amplifiers, specifically the design of the output transformer, is complicated by the relatively low voltage provided by battery packs that are practical for handheld devices meant for possibly delicate uses. Provided is an RF amplifier with one or more taps on the primary coil, wherein each tap is controlled by a half bridge driver. The output transformer primary winding may be driven between any two half bridge drivers, with the number of turns between the half bridge drivers and the fixed output winding determining the overall turns ration for the transformer. 120-. (canceled)21. A control circuit for a radio frequency drive of an electrosurgical device , the control circuit comprising:a voltage data input configured to receive voltage data from a voltage sensing circuit;a current data input configured to receive current data from a current sensing circuit; anda switching signal output configured to source a switching signal to the radio frequency drive of the electrosurgical device, whereinthe control circuit is configured to adjust a frequency of the switching signal based on the voltage data and the current data.22. The control circuit of claim 21 , further comprising a synchronous I/Q sampling circuit claim 21 , configured to sample the voltage data and to sample the current data.23. The control circuit of claim 22 , wherein the synchronous I/Q sampling circuit is configured to sample the voltage data and the current data based on a period of the switching signal.24. The control circuit of claim 23 , wherein the synchronous I/Q sampling circuit is configured to sample the voltage data and to sample the current data once per period of the switching signal at a first phase of a first period of the switching signal claim 23 , and at a second phase of an adjacent period of the switching signal.25. The control circuit of claim 23 , wherein the synchronous I/Q sampling circuit is configured to sample the voltage data and to sample the ...

Adaptive inductive power supply

A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable of modifying the resonant frequency of the tank circuit, the inverter frequency, the inverter duty cycle or the rail voltage of the DC power source.

自适应感应电源及其操作方法

一种无触点电源具有由变换器供电的可动态配置振荡电路。无触点电源感应地耦合到一个或多个负载。变换器连接到DC电源。在将负载添加到系统或从系统移除时，无触点电源能够更改振荡电路的谐振频率、变换器频率、变换器占空比或DC电源的干线电压。

用于运行轨道车辆中的并联的辅助运行变流器的方法

本发明涉及一种用于通过交流电压侧并联连接的辅助运行变流器(1，11，12)为车辆的电负载(3，31，32)供应电能的方法，其中，在接地故障的情况中断开在辅助运行变流器(1，11，12)和能量供应网络(2，22)的接地的N导线(N)之间的通过电流，并且其中在交流电压侧并联连接的辅助运行变流器基波同步地并且脉冲同步地运行。此外，本发明还涉及一种车辆、尤其是轨道车辆的能量供应系统(5)，用于执行上述的方法，其中，能量供应系统(5)包括‑至少两个并联布置的辅助运行变流器(1，11，12)，‑用于对电负载(3，31，32)供电的能量供应网络(2，21，22)，‑至少一个用于断开在辅助运行变流器(1，11，12)和能量供应网络(2，21，22)之间的通过电流的开关(4)。

단상 ac 전력 변환 장치

요약없음

Single phase ac power conversion apparatus

A power conversion apparatus (20) circuit includes pairs of rectifying devices (48,49) connected together at a first node, a pair of capacitors (50, 51) connected together at a second node, and pairs of controllable switching devices (53,54) connected together at a third node, each of the pairs being connected in parallel by DC bus lines (58,59). The AC power source (21) is connected between the first and second nodes and the output voltage to a load (22) is provided between the first and third nodes. The switching devices (53,54) are controlled to switch on and off at proper times to provide a controllable output voltage to the load (22) which is at the same frequency as the input voltage and which may be controlled from zero to substantially twice the peak-to-peak input voltage. The output voltage waveform provided to the load can be filtered to provide a substantially sinusoidal waveform to the load. The power conversion apparatus (20) can also function as an uninterruptible power system by connecting an energy storage device, such as a large capacitor (140) or a battery (146) across the DC bus lines (58,59), and by controlling the charging of the energy storage device when power is available for the source and discharging the storage device when the power source fails. <IMAGE>

Inverter controller

An integrated circuit inverter controller that includes at least one input pin that is configured to receive two or more input signals. The input pin may be multiplexed so that the appropriate input signal is directed to appropriate circuitry within the controller to support two or more functions of the controller. Alternatively, the input signals may be present in differing time periods so that a single pin can support two or more functions. Multifunctional or multitasked pins reduce the overall pin count of the inverter controller.

No-break power supply

An A.C. power supply conditioner uses semi-conductor diodes (D1) and (D2) and energy storage capacitors (C1) and (C2) to produce a high D.C. voltage which is inverted at (TR1) and (TR2) to provide an A.C. output (L0, N0) without use of isolating transformer. A standby battery system includes a low voltage battery 'B' a DC/AC/DC converter 'E', and a charger 'F'. The inverter may provide a high frequency square wave, pulse-width modulated to form an effective sine wave at input frequency. In the event of a fault, switch G may be automatically changed-over. <IMAGE>

Single phase AC power conversion apparatus

A power conversion apparatus (20) circuit includes pairs of rectifying devices (48,49) connected together at a first node, a pair of capacitors (50, 51) connected together at a second node, and pairs of controllable switching devices (53,54) connected together at a third node, each of the pairs being connected in parallel by DC bus lines (58,59). The AC power source (21) is connected between the first and second nodes and the output voltage to a load (22) is provided between the first and third nodes. The switching devices (53,54) are controlled to switch on and off at proper times to provide a controllable output voltage to the load (22) which is at the same frequency as the input voltage and which may be controlled from zero to substantially twice the peak-to-peak input voltage. The output voltage waveform provided to the load can be filtered to provide a substantially sinusoidal waveform to the load. The power conversion apparatus (20) can also function as an uninterruptible power system by connecting an energy storage device, such as a large capacitor (140) or a battery (146) across the DC bus lines (58,59), and by controlling the charging of the energy storage device when power is available for the source and discharging the storage device when the power source fails.

적응성 유도성 전원

비접촉형 전원은 인버터에 의해 전력이 공급되는 동적으로 구성가능한 탱크 회로를 가진다. 비접촉형 전원은 하나 이상의 부하에 유도성으로 결합된다. 인버터는 DC 전원에 결합된다. 부하가 시스템으로부터 추가 또는 제거될 경우에, 비접촉형 전원은 탱크 회로의 공진 주파수, 인버터 주파수, 인버터 듀티 사이클 또는 DC 전원의 레일 전압을 수정할 수 있다.

自适应感应电源

一种自适应感应电源，具有用于通过感应耦合把功率传送给所述远程设备的初级侧的振荡电路，该振荡电路具有一种谐振频率；用于将干线电压的功率施加给所述振荡电路的电路，该电路以一种工作频率和一种占空比施加该功率；与该电路耦合的控制器，该控制器被配置用于改变所述振荡电路的所述谐振频率、所述功率的所述工作频率、所述功率的所述占空比和所述功率的所述干线电压中的至少一种；以及与所述振荡电路耦合的抑制电路，该抑制电路用于抑制所述功率。

PWM control circuit and switching power supply device

从端子(11)输入频率以及占空比任意的方形波信号，从端子(12)输入调制信号，从端子(21、22)输出定时(相位)不同的2个被调制信号。第1斜坡波产生电路(31)产生与方形波信号的上升同步的第1斜坡波，第2斜坡波产生电路(32)产生与方形波信号的下降同步的第2斜坡波。第1比较电路(41)通过按照第1斜坡波和调制信号的比较结果使电平反转来产生第1被调制信号，第2比较电路(42)通过按照第2斜坡波和调制信号的比较结果使电平反转来产生第2被调制信号。由此生成相位差为180°以外的关系的2个PWM信号，得到占空比为50％以外的准矩形波信号。

Method of operation a parallel auxiliary converters in a rail vehicle

FIELD: power engineering. SUBSTANCE: group of inventions relates to power supply to auxiliary equipment of vehicles. Method of supplying electric consumers (3, 31, 32) of the vehicle with electric energy using the auxiliary converters (1, 11, 12) is that the auxiliary converters are driven with synchronization of the main wave and pulse synchronization. In the case of a ground circuit, the current flow between the auxiliary converters (1, 11, 12) and the grounded N-wire (N) of the power network is interrupted. Auxiliary converters are connected in parallel on the side of alternating current. Besides, is stated the electric power system (5) of the vehicle, especially a rail vehicle, for implementing the above method. EFFECT: technical result consists in the continuous power supply of the consumers of the vehicle in the case of a short circuit. 10 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) (19) RU (11) (13) 2 648 494 C1 (51) МПК B60L 1/00 (2006.01) B60L 3/04 (2006.01) B60L 9/00 (2006.01) H02H 11/00 (2006.01) H02J 3/46 (2006.01) H02M 7/06 (2006.01) H02M 7/493 (2007.01) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B60L 1/00 (2017.08); B60L 3/003 (2017.08); B60L 3/0069 (2017.08); B60L 9/00 (2017.08); H02H 11/001 (2017.08); H02H 5/10 (2017.08); H02J 3/46 (2017.08); H02M 7/06 (2017.08); H02M 7/493 (2017.08); H02M 7/53803 (2017.08); H02M 7/53871 (2017.08) (21)(22) Заявка: 2016142372, 23.03.2015 23.03.2015 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: (56) Список документов, цитированных в отчете о поиске: RU 2395146 C2, 20.07.2010. JP 31.03.2014 EP 14162768.7 2012165509 A, 30.08.2012. RU 2457122 C2, 27.07.2012. RU 2462374 C1, 27.09.2012. (45) Опубликовано: 26.03.2018 Бюл. № 9 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 31.10.2016 2 6 4 8 4 9 4 (73) Патентообладатель(и): СИМЕНС АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) 26.03.2018 R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): ВУ Сяо Цян (DE), ...

Adaptive inductive power supply

비접촉형 전원은 인버터에 의해 전력이 공급되는 동적으로 구성가능한 탱크 회로를 가진다. 비접촉형 전원은 하나 이상의 부하에 유도성으로 결합된다. 인버터는 DC 전원에 결합된다. 부하가 시스템으로부터 추가 또는 제거될 경우에, 비접촉형 전원은 탱크 회로의 공진 주파수, 인버터 주파수, 인버터 듀티 사이클 또는 DC 전원의 레일 전압을 수정할 수 있다.

High power battery powered RF amplifier topology

The design of high-power RF amplifiers, specifically the design of the output transformer, is complicated by the relatively low voltage provided by battery packs that are practical for handheld devices meant for possibly delicate uses. Provided is an RF amplifier with one or more taps on the primary coil, wherein each tap is controlled by a half bridge driver. The output transformer primary winding may be driven between any two half bridge drivers, with the number of turns between the half bridge drivers and the fixed output winding determining the overall turns ration for the transformer.

Patent FR2391588B1

High power battery powered RF amplifier topology

In various embodiments, a control circuit for a radio frequency drive of an electrosurgical device is disclosed comprising a voltage data input configured to receive voltage data, a current data input configured to receive current data, and a switching signal output configured to source a switching signal. The control circuit is configured to adjust a frequency of the switching signal based on the voltage data and the current data. The radio frequency drive comprising a transformer comprising a first tap, a second tap, a third tap, a first portion of a primary coil, a second portion of the primary coil, and a secondary coil. Two of the first, second, and third taps are selected to drive the primary coil between the two selected taps.

Drive unit for vibration type compressor

Contacless power supply, method of operating an inductive power supply and inductive power supply system

원격 장치에 무선으로 전력을 공급하기 위한 비접촉형 전원으로서, 유도성 결합에 의해 상기 원격 장치에 전력을 전달하기 위한 제1 와인딩(primary)을 갖는 탱크 회로; 상기 탱크 회로에 전력을 인가하도록 구성된 드라이브 회로; 및 상기 드라이브 회로에 결합된 제어 시스템 - 상기 제어 시스템은 상기 드라이브 회로의 동작을 제어하도록 구성되고, 상기 제어 시스템은 위상 지연을 선택적으로 삽입하여 전력을 변화시키도록 구성됨 - 을 포함하는 비접촉형 전원이 제공된다. A contactless power source for wirelessly powering a remote device, comprising: a tank circuit having a first winding for delivering power to the remote device by inductive coupling; A drive circuit configured to apply power to the tank circuit; And a control system coupled to the drive circuit, the control system configured to control the operation of the drive circuit, the control system configured to selectively insert a phase delay to change power. Is provided.

Fet gate driver circuit

The drive circuit includes a pulse transformer having an input resistor of such a value that it limits the current through the primary winding. The transformer has two secondary windings connected to drive respective FETs in the push-pull inverter. The circuit relies upon the Miller capacitance in the FETs to assure that a conducting FET is fully non-conducting before a second FET can be gated into induction. The Miller capacitance effect is reflected from the secondary of the pulse transformer into the primary where the selected input resistor is connected.

Capacitance reducing method and associated devices

本发明是一种降低电容值使用量的方法及其装置，特别是指应用于一具有电容器的脉冲可控装置，来改善功率因数并同时取代大型电容器使用需求的方法，其包括有一整流步骤、一检测零点步骤、一频率相位锁定同步步骤、一设定脉冲期间步骤及一启动与关闭步骤，借由上述之步骤，当一脉冲可控装置被关闭时，其内部之电容器所储存的电能会维持在一稳定状态，以使得该脉冲可控装置之电容值的需求量得以降低，体积亦较传统装置更来得轻薄短小。

Adaptive inductive power supply

A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable of modifying the resonant frequency of the tank circuit, the inverter frequency, the inverter duty cycle or the rail voltage of the DC power source.

Adaptive inductive power supply

비접촉형 전원은 인버터에 의해 전력이 공급되는 동적으로 구성가능한 탱크 회로를 가진다. 비접촉형 전원은 하나 이상의 부하에 유도성으로 결합된다. 인버터는 DC 전원에 결합된다. 부하가 시스템으로부터 추가 또는 제거될 경우에, 비접촉형 전원은 탱크 회로의 공진 주파수, 인버터 주파수, 인버터 듀티 사이클 또는 DC 전원의 레일 전압을 수정할 수 있다. The contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power source is inductively coupled to one or more loads. The inverter is coupled to a DC power source. When a load is added or removed from the system, the non-contact power supply can modify the resonant frequency, inverter frequency, inverter duty cycle, or rail voltage of the DC power supply of the tank circuit.

Power inverter with reduced switching frequency

根据本发明的一种逆变器系统,包括:带有直流电源(E)的电力负载(R,L),直流电源向带有至少一对在导通和非导通状态之间切换的开关的至少一对逆变器开关(Q1和Q2)提供电流,从而控制直流电源和电力负载之间电流脉冲的流动方向,使得交流电流流过电力负载;参考电压源,代表流过电力负载的交流电流的理想形式;误差信号发生器(24),具有连接到电力负载的第一输入端和连接到参考电压的第二输入端,在输出端(26)产生代表第一和第二输入端之间差值的误差控制电压;及逆变器控制器(16),连接到误差控制信号发生器的输出和逆变器,根据误差控制电压控制至少一对开关的切换频率,从而产生以可变频率流过电力负载的电流脉冲,提供交流电流流过电力负载。

Electromedical power generator

본 발명에 따른 발전기(22)는 자체 발진 방식으로 구성된다. 이는 2개의 캐스코드 회로들(31, 32)로 구성되며, 그의 출력부들(A1, A2)은 푸시-풀 방식으로 여기시키기 위해 병렬 공진 회로(23)와 연결된다. 상기 캐스코드 회로들(31, 32)의 입력 트랜지스터들(33, 35)은 교차 결합되는 반면, 출력 트랜지스터들(34, 36)의 제어 전극들은 비가변 전위와 연결된다. 상기 전력 발진기(22)는 상기 트랜지스터들(33-36)이 가장 낮은 전환 손실을 포함하도록 자체 제어된다.

Electronic power regulator with switch-mode power supply

FIELD: electronic regulators with switch-mode power supply used in particular for dimmers. SUBSTANCE: power regulator has half-bridge control unit 2, generator incorporating circuit 5, two control units 6, 7, and at least two switching members such as field- effect transistors 8,9 most suited to half-bridge circuits; transistor gates are connected to outputs of control units 6, 7 of half-bridge control unit 2. Switch-over time of switching members 8, 9 and, hence, electric power supplied to load K may be varied by varying operating cycle of output voltage in generator circuit 5. Half-bridge control unit 2 is provided with terminals 5a, 5b for connecting external components, especially resistor and capacitor, for setting its operating frequency. Novelty is that terminals 5a, 5b designed for connecting operating frequency setting devices for half-bridge control unit 2 are provided with resistance circuit 14 and capacitor 15 known as such. Resistance circuit 14 has two variable resistors 16, 17, of which first one 16 is mounted so that it functions when capacitor 15 is being charged and other resistor 17 functions when capacitor 15 is being discharged. EFFECT: reduced switching loss. 5 cl, 8 dwg УС ОсСс ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ “” 2 202 145' (51) МПК” 13) С2 Н 02 М 7/538, Н 05 В 39/04 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99107967/09, 17.10.1997 (24) Дата начала действия патента: 17.10.1997 (30) Приоритет: 18.10.1996 Е! 964182 (46) Дата публикации: 10.04.2003 (56) Ссылки: СВ 2085243 А, 21.04.1981. ЗЦ 1647826 АЛ, 07.05.1991. ОЕ 4403707 А, 10.08.1995. (85) Дата перевода заявки РСТ на национальную фазу: 19.04.1999 (86) Заявка РСТ: Е! 97/00630 (17.10.1997) (87) Публикация РСТ: М/О 98/18199 (30.04.1998) (98) Адрес для переписки: 191186, Санкт-Петербург, а/я 230, "АРС-ПАТЕНТ", пат.пов. В.М. Рыбакову, рег. № 90 (71) Заявитель: ОЙ ЛЕКСЕЛ ФИНЛАНД АБ ([|) (72) Изобретатель: САИРАНЕН Мартги (Ё|), САЛОНЕН ...

Patent JPH0437649B2

Power supply apparatus and display apparatus

A liquid crystal display apparatus is capable of reducing a power loss incurred by a power-supply section in a process of generating a power-supply voltage for driving a backlight section. In the configuration of the power-supply section, a main power-supply circuit and an inverter circuit (or a DC-DC converter) are connected to an input-voltage generation unit in parallel to each other, which is used for rectifying and smoothing the commercial alternative current power. The main power-supply circuit and the inverter circuit (or the DC-DC converter) each include an isolation transformer including a primary-side winding not isolated from the commercial alternative current power and a secondary winding provided on the secondary side. The direct current input voltage is supplied to the primary side to be subjected to a power conversion process to generate an output voltage on the secondary side of the isolation transformer. Thus, the number of power conversion process stages for supplying power to the backlight section connected to the inverter circuit (or the DC-DC converter) is reduced by 1. As a result, the power loss incurred by the power-supply section can be reduced to a value smaller than that of the conventional one.

Flyback power supply, inverter and electric vehicle

Stabilized inverter

Circuit for powering a remote device and method of operating thereof

원격 장치에 유도적으로 전력을 공급하기 위한 전력 공급기는 동작 주파수에서 동작하는 인버터와 주 코일을 갖는다. 위상 비교기는 전력 공급기에 의해 전달된 전류 또는 전압의 위상을 비교한다. 비교기에 의해 검출된 위상 관계가 허용불가능하면, 인버터는 디세이블된다. 일정 기간 후에, 인버터는 재인에이블되고, 위상 관계는 다시 결정된다. 전력 공급기, 유도성 회로, 위상 비교기, 탱크 회로, 원격 장치

Discharge lamp lighting device

Patent JPS636216B2

Protection method, system and apparatus for a power converter

Among many embodiments, a power converter and a method for operating a power converter are disclosed. The power converter may include a pair of switches connected in scries, an output transformer connected to a common node between the switches and a protection apparatus for protecting each switch from being hard driven, each switch being enabled by a gate signal and turning ON in alternating half cycles so as to drive transformer current in alternate directions through the transformer. The protection apparatus may include: a detector configured to detect whether an intrinsic diode in a first switch is conducting the transformer current; and a gate signal disabler configured in response to the detector blocking an ON gate pulse from reaching a second switch in the pair of switches so that the second switch is not turned ON while the intrinsic diode of the first switch is conducting.

Ac high voltage detecting apparatus

본 발명에 따른 AC 고전압 측정장치는, 저전압을 AC 고전압으로 변환시키는 고전압 발생부, 변환된 AC 고전압을 양의 전압 및 음의 전압으로 각각 정류하는 정류부, 정류된 양의 전압 및 음의 전압을 각각 제1, 제2 전압으로 전압 배분하는 전압 배압부, 및 제1 전압과 제2 전압의 합성분을 읽어, 상기 AC 고전압을 DC 레벨로 검출하는 측정부를 포함한다. 이에 의해, 화상형성장치의 고전압 발생장치로부터의 AC 고전압을 DC 전압으로 변환하여 전압을 측정함으로써, AC 고전압을 측정하기 위한 다양한 장비의 편차로 인해 발생하는 화상불량을 방지할 수 있다.  The AC high voltage measuring device according to the present invention includes a high voltage generating unit for converting a low voltage into an AC high voltage, a rectifying unit for rectifying the converted AC high voltage into a positive voltage and a negative voltage, respectively, a rectified positive voltage and a negative voltage, respectively. And a voltage backing part for voltage-dividing the first and second voltages, and a measuring part for reading the combination of the first voltage and the second voltage and detecting the AC high voltage at the DC level. Accordingly, by measuring the voltage by converting the AC high voltage from the high voltage generator of the image forming apparatus into a DC voltage, it is possible to prevent image defects caused by the deviation of various equipment for measuring the AC high voltage. AC 고압, 정류, 배압 AC high pressure, rectification, back pressure

System and method for voltage supply to load

FIELD: electricity. SUBSTANCE: source of supply for induction supply of remote device has inverter, operating at working frequency, and the primary winding. Phase comparator compares phase of voltage or current supplied by supply source. If ratio of phases determined by comparator is not permissible, inverter trips. As a certain time period expires, inverter starts again, and ratio of phases is determined again. EFFECT: reduced consumed power. 17 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 407 130 (13) C2 (51) МПК H02J 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (30) Конвенционный приоритет: 14.10.2005 US 11/251,409 (73) Патентообладатель(и): Эксесс Бизнесс Груп Интернешнл ЛЛС (US) (43) Дата публикации заявки: 20.11.2009 2 4 0 7 1 3 0 (45) Опубликовано: 20.12.2010 Бюл. № 35 (56) Список документов, цитированных в отчете о поиске: US 2004/0130915 A1, 08.07.2004. US 2005068795 A1, 31.03.2005. SU 650158 A, 23.03.1979. 2 4 0 7 1 3 0 R U (86) Заявка PCT: IB 2006/053441 (22.09.2006) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 14.05.2008 (87) Публикация PCT: WO 2007/042953 (19.04.2007) Адрес для переписки: 105064, Москва, а/я 88, "Патентные поверенные Квашнин, Сапельников и партнеры", пат.пов. В.П.Квашнину, рег.№ 4 (54) СИСТЕМА И СПОСОБ ДЛЯ ПОДАЧИ ПИТАНИЯ НА НАГРУЗКУ (57) Реферат: Источник питания для индуктивного питания удаленного устройства имеет инвертор, работающий на рабочей частоте, и первичную обмотку. Фазовый компаратор сравнивает фазу напряжения или тока, подаваемого источником питания. Если соотношение фаз, определенное компаратором, является недопустимым, инвертор отключается. Через некоторый промежуток времени инвертор включается вновь и снова определяется соотношение фаз. Технический результат уменьшение потребляемой мощности. 2 н. и 15 з.п. ф-лы, 2 ил. Ñòð.: 1 ru R U (24) Дата начала отсчета срока действия патента: 22.09.2006 (72) Автор(ы): БААРМЭН Дэвид ...

Multi-path parallel inversion control method and system for low-temperature plasma system

本发明公开用于低温等离子体系统的多路并联逆变控制方法及其系统。本发明通过电流检测电路获取初始输出电流有效值I；初始输出电流有效值I通过电流检测电路输送至低温等离子消融手术系统的单片机内进行电流有效值阈值判断，从而判断需开通n路推挽逆变电路；单片机控制n个信号输出端控制CPLD输出n组PWM波，从而实现n个推挽电路并联，或电流判断后，单片机控制n个信号输出端，通过光耦控制相对应推挽逆变电路上的两个继电器通断状态，从而实现n个推挽电路并联。本发明解决了因等离子体手术系统使用部位组织不同，导致使用过程中功率输出不够的现象，也解决了由于强行大功率输出或仪器长时间、满负荷工作导致的烧掉手术主机现象。

Method and apparatus for controlling current in inductive loads such as large diameter coils

A method and apparatus for controlling electric current in loads that are essentially inductive, such that sparking and "ringing" current problems are reduced or eliminated. The circuit apparatus employs a pair of solid state switches (each of which switch may be an array of connected or parallel solid state switching devices such as transistors) and means for controlling those switches such that a power supply supplying two d.c. voltages (e.g. positive 150 volts d.c. and negative 150 volts d.c.) at low resistance may be connected across an essentially inductive load (e.g. a 6 gauge wire loop one hundred meters in diameter) alternatively and such that the first solid state switch is turned off and the second is turned on such that both are not on at the same time but the first turned on and the other on in less time than the inductive time constant (L/R) so that the load is essentially always presented with a low resistance path across its input. In this manner a steady AC current may be delivered to the load at a frequency desired. Shut-off problems are avoided by gradually shortening the period of switching to less than the time constant so that the maximum energy contained in the inductive load is reduced to approximately zero and dissipated in the inherent resistance. The invention circuit may be employed by adjusting the timing of switching to deliver a desired waveform (such as sinusoidal) to the load.

Converter controller

本发明涉及一个集成电路换流器的控制器，它至少配有一个可以接收两个或多个输入信号。输入管脚可以进行复用，这样相应的输入信号就会被指引到控制器内相应的电路，从而实现控制器的两种或多种功能。或者，通过在不同的时间输入信号，用一个管脚就可以支持两种或多种功能。这种多功能、多任务的管脚可以减少用于换流器的控制器的总管脚数。

DC to AC converter with transformer - has switching transistors and storage inductances and diodes

The battery DC input to this converter is switched by two transistors (1, 2) into an energy storage circuit of inductances (5, 6) and diodes (3, 4). The transistor bases (A, B) are switched from a control circuit generator giving H.F. pulses for periods varying between 5 and 150 microseconds, dependent upon the instantaneous value of a generated 50Hz signal. One transistor saturates on positive cycles and the other on negative cycles. The 220V 50Hz output is supplied via an isolating transformer (7) and feedback to the control circuit can stabilise the output. This circuit can give an energy efficiency of 92% at full load with (+-) 1% regulation.

ALTERNATIVE CURRENT GENERATOR WITH PREDETERMINED WAVE FORM PRECISELY

PROCESS FOR CREATING AN ALTERNATIVE CURRENT FROM A DIRECT CURRENT

In order to produce with a good output alternating current from direct current, the voltage curve of the alternating current to be produced is predetermined as a function of time, directly and with a phase shift of 180<o>, by means of an oscillator (1). Thereafter, a half wave of those two voltages is compared in a separate way by means of two voltage comparison units (4, 5) with the output voltage present at each instant, respectively with the output voltage out of phase by 180<o>. By using those two voltage comparison units (4, 5), one of the two switches (6, 7) which provide the user with the direct voltage by a current limiting impedance (8), of which the output is connected to an energy accumulator (9), is provided so as to enable the matching of the output voltage path with the predetermined voltage curve, while a positive, respectively negative voltage is applied to energy accumulator (9) by passing through the switches (6, 7) as soon as and as long as the voltage difference at one of the two voltage comparison units (4, 5) exceeds a predetermined positive threshold for the switching into circuit, respectively a predetermined threshold for the switching out of circuit.

METHOD FOR CREATING AN ALTERNATING CURRENT FROM A DIRECT CURRENT

HIGH VOLTAGE ALTERNATIVE POWER SOURCE PROVIDING AUTOMATICALLY VARIABLE CONTINUOUS POLARIZATION

INVERTER CIRCUIT FOR INDUCTION COOKING APPARATUS.

DEVICE FOR CONTROLLING THE CURRENT OF A CONTINUOUSLY CUTTING VOLTAGE CONVERTER

Low frequency amplifier

CUT-OUT VOLTAGE CONVERTER WITH IMPROVED CONTROL.

Le bloc convertisseur (CV) comprend une entrée pour une tension d'entrée sensiblement continue (V+, V-), comportant une première et deuxième bornes d'entrée (BE1,-BE2) et une sortie comportant une première et une deuxième bornes de sortie (BS1, BS2) pour délivrer entre ces bornes une tension de sortie (VS) de caractéristiques désirées. Un module de commutation (MCOM) possède deux unités d'interruption bidirectionnelle en courant (I1, I2), commandables,connectées entre les deux bornes d'entrée. Des moyens de commande (COMD) sont propres à commander les deux unités d'interruption simultanément et de façon antagoniste en fonction d'une loi de commande (LC) reliée aux caractéristiques désirées de la tension de sortie et comportant, selon une fréquence de découpage, une succession de cycles de durées identiques. Une cellule de filtrage (LPF) comporte une inductance (LF) connectée entre la sortie du module de commutation (MCOM) et l'une des bornes de sortie (BS1), ainsi qu'une capacité (CF) connectée entre les deux bornes de sortie, et possède une fréquence de coupure choisie en fonction de la fréquence de découpage. The converter block (CV) comprises an input for a substantially continuous input voltage (V +, V-), comprising a first and second input terminals (BE1, -BE2) and an output comprising a first and a second terminal. output (BS1, BS2) to deliver between these terminals an output voltage (VS) of desired characteristics. A switching module (MCOM) has two bidirectional current interrupt units (I1, I2), controllable, connected between the two input terminals. Control means (COMD) are suitable for controlling the two interrupting units simultaneously and antagonistically as a function of a control law (LC) linked to the desired characteristics of the output voltage and comprising, according to a switching frequency , a succession of cycles of identical durations. A filter cell (LPF) has an inductor (LF) connected between the output of ...

Patent FR2441290B1

Patent JPS58501255A

(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。

Patent FR2395635B1

SEMICONDUCTOR STATIC ELECTRICAL ENERGY CONVERTER

L'INVENTION CONCERNE UN CONVERTISSEUR STATIQUE D'ENERGIE ELECTRIQUE A SEMI-CONDUCTEURS. CE CONVERTISSEUR EST DU TYPE COMPRENANT UN ETAGE DE PUISSANCE 5 DOTE D'AU MOINS UN TRANSISTOR DE PUISSANCE 7, ET UN ETAGE DE COMMANDE 1 FOURNISSANT UN SIGNAL DE COMMANDE S APPROPRIE A LA CONVERSION A REALISER; SELON L'INVENTION CHAQUE TRANSISTOR EST UN TRANSISTOR AYANT UNE TENUE EN TENSION V SUPERIEURE A SA TENUE V, ET EST ASSOCIE A UN ETAGE INTERMEDIAIRE 4 DE TRAITEMENT DU SIGNAL DE COMMANDE S. CET ETAGE 4 EST ADAPTE POUR PILOTER LA BASE DUDIT TRANSISTOR POUR GARANTIR UN FONCTIONNEMENT DE CELUI-CI SUR UNE ZONE DE TENSION S'ETENDANT DE O A V PERMETTANT AINSI DE BENEFICIER DE LA TENUE EN TENSION V AMELIOREE DUDIT TRANSISTOR. L'INVENTION S'APPLIQUE EN PARTICULIER DANS LE CAS DES ONDULEURS DESTINES A CONVERTIR UNE TENSION ELECTRIQUE CONTINUE EN UNE TENSION ELECTRIQUE ALTERNATIVE. THE INVENTION RELATES TO A STATIC CONVERTER OF ELECTRICAL ENERGY TO SEMICONDUCTORS. THIS CONVERTER IS OF THE TYPE INCLUDING A POWER STAGE 5 WITH AT LEAST ONE POWER TRANSISTOR 7, AND A CONTROL STAGE 1 PROVIDING A CONTROL SIGNAL S APPROPRIATE TO THE CONVERSION TO BE CARRIED OUT; ACCORDING TO THE INVENTION EACH TRANSISTOR IS A TRANSISTOR HAVING A TENSION HOLDING V GREATER THAN ITS HOLDING V, AND IS ASSOCIATED WITH AN INTERMEDIATE STAGE 4 FOR PROCESSING THE S CONTROL SIGNAL. THIS STAGE 4 IS SUITABLE FOR DRIVING THE BASE OF THE said TRANSISTOR TO GUARANTEE AN OPERATION OF THIS ON A VOLTAGE ZONE EXTENDING FROM OAV ALLOWING TO BENEFIT FROM THE IMPROVED V VOLTAGE HOLDING OF THE SAID TRANSISTOR. THE INVENTION APPLIES IN PARTICULAR IN THE CASE OF INVERTERS INTENDED TO CONVERT A CONTINUOUS ELECTRICAL VOLTAGE INTO AN ALTERNATIVE ELECTRICAL VOLTAGE.

CUT-OUT VOLTAGE CONVERTER WITH IMPROVED CONTROL.

CIRCUIT DEVICE TO PROVIDE AN OUTPUT VOLTAGE FUNCTION OF A CONTINUOUS INPUT VOLTAGE AND A PREDETERMINED RATED VOLTAGE

Fluorescent lamp control by integrated circuits without transformers

The oscillatory lamp circuit is supplied by a mains-fed rectifier. Alternate current half-cycles are controlled by identical circuits (1), each having a power transistor (Ta), with current monitored (5a, 5b), via an integrator (6), by a comparator (7) using a reference (Iref) proportional to the rated lamp current. Comparator signals (s2) provide one input to a bistable device (8); another (s1) emanates from a zero-voltage detector (3, 4). the bistable unit responds to these signals by alternately blocking and opening, respectively, the lamp current path (Bla-B2a), via the MOSFET gate (g). For start-up, random pulse generators (11) are connected t the bistable voltage reference input in each control circuit (1), via an OR gate (10). Conduction begins in the first transistor to receive a signal pulse.

INVERTER SUPPLY DEVICE WITH CONTROLLED POWER SUPPLY

L'invention se rapporte à un dispositif d'alimentation à onduleur destiné à alimenter un circuit résonant (2, 5), comportant un générateur (8), comportant au moins un interrupteur (TA , TB ; TA , TB , TC , TD ; TB ) monté en série avec le circuit résonant (2, 5) et une diode de roue libre (DA , DB , DA , DB , Dc , DD ; DB ) montée en parallèle de l'interrupteur (TA , TB ; TA , TB , TC , TD ; TB ), l'interrupteur (TA , TB ; TA , TB , TC , TD ; TB ) étant commandé par un signal périodique de fréquence dite fréquence de travail. Le dispositif comporte en outre :- des premiers moyens (10) fournissant une mesure du courant instantané (i) circulant dans le circuit résonant (2, 5),- des seconds moyens (20) pour déduire du courant instantané (i), le courant maximum (Imax ), - des troisièmes moyens (30) pour déduire du courant instantané (i), le courant, dit de commutation, courant pour lequel l'interrupteur (TB ) ou la diode de roue libre (DB ) qui lui est associée deviennent conducteurs (Icommut ),- des premiers moyens de commande (55) de l'interrupteur (TA , TB ; TA , TB , TC, TD ; TB ), recevant le courant maximum (Imax ), le courant de commutation (Icommut ) et une consigne donnée par l'utilisateur (CU), modifiant la consigne donnée par l'utilisateur (CU) en fonction du courant maximum (Imax ) et du courant de commutation (Icommut ) et, fournissant le signal périodique en fonction de la consigne modifiée (C). The invention relates to an inverter power supply device intended to power a resonant circuit (2, 5), comprising a generator (8), comprising at least one switch (TA, TB; TA, TB, TC, TD; TB) connected in series with the resonant circuit (2, 5) and a freewheeling diode (DA, DB, DA, DB, Dc, DD; DB) connected in parallel with the switch (TA, TB; TA, TB , TC, TD; TB), the switch (TA, TB; TA, TB, TC, TD; TB) being controlled by a periodic signal of frequency called the working frequency. The device further comprises: - first means (10) ...

BACKUP SUPPLY SYSTEM WITH NEUTRAL CONTINUITY

Ce système comprend : - des moyens redresseurs 10, pour effectuer le redressement d'une tension secteur alternative afin d'obtenir une tension continue, ces moyens redresseurs comportant une première borne d'entrée 14, destinée à être reliée au conducteur non à la masse d'une source d'alimentation secteur alternative, et une seconde borne d'entrée 16, destinée à être reliée au conducteur à la masse de cette source d'alimentation secteur alternative; - deux bornes de sortie 20, 22, destinées à être reliées à une charge, la seconde borne d'entrée 16 des moyens redresseurs étant reliée à une première 22 des deux bornes de charge par un conducteur électrique 24 dont la continuité électrique est conservée de la seconde borne d'entrée des moyens redresseurs jusqu'à la première des deux bornes de charge, sans qu'aucun moyen d'isolement ne soit placé entre la seconde borne d'entrée et la première des deux bornes de charge, et - des moyens inverseurs 12, pour convertir la tension continue produite par les moyens redresseurs en une tension alternative et pour maintenir le niveau de cette tension dans une plage correspondant à un fonctionnement normal en dépit des variations de tension en entrée. This system comprises: - rectifier means 10, for effecting the rectification of an AC mains voltage in order to obtain a DC voltage, these rectifier means comprising a first input terminal 14, intended to be connected to the ungrounded conductor an AC mains power source, and a second input terminal 16, intended to be connected to the ground conductor of this AC mains power source; - two output terminals 20, 22, intended to be connected to a load, the second input terminal 16 of the rectifier means being connected to a first 22 of the two load terminals by an electrical conductor 24 whose electrical continuity is preserved from the second input terminal of the rectifier means as far as the first of the two load terminals, without any ...

High power factor conversion circuitry

ABSTRACT OF THE GISCLOSURE A high power factor conversion circuit suitable as a ballast circuit for lamps includes a full-wave rectifier coupled to an AC potential source and providing a pulsating DC pontential. A high frequency inverter is coupled to a load Circuit and to a feedback rectifier circuit supplying a rectified high frequency potential to an energy storage feedback circuit which provides energy in a manner to inhibit a decline in the pulsating DC potential thereby providing a substantially uniform DC potential to the high frequency inverter.

DEVICE AND METHOD FOR DETECTION OF THE CONTINUOUS COMPONENT OF AN ALTERNATIVE CURVE

A.DISPOSITIF ET PROCEDE POUR LA DETECTION DE LA COMPOSANTE CONTINUE D'UNE COURBE ALTERNATIVE. B.DISPOSITIF CARACTERISE EN CE QU'IL COMPORTE UN MOYEN DE MESURE 15, 17 POUR MESURER L'AMPLITUDE INSTANTANEE DE LA COURBE ALTERNATIVE, AVEC UN MULTIPLEXEUR 17 RELIE A UN CIRCUIT D'ECHANTILLONNAGE ET DE MAINTIEN 21 ET A UN CONVERTISSEUR ANALOGIQUENUMERIQUE 23 COOPERANT AVEC UN MICROPROCESSEUR 25 POUR MESURER LA VALEUR INSTANTANEE EN DEUX POINTS DE LA COURBE SEPAREE D'UN NOMBRE IMPAIR DE DEMI-CYCLES ET DEDUIRE DE CES DEUX MESURES LA COMPOSANTE CONTINUE DU SIGNAL. C.L'INVENTION CONCERNE NOTAMMENT LES RESEAUX DE COURANT ALTERNATIF. A. DEVICE AND METHOD FOR DETECTION OF THE CONTINUOUS COMPONENT OF AN ALTERNATIVE CURVE. B. DEVICE CHARACTERIZED IN THAT IT INCLUDES A MEASURING MEANS 15, 17 FOR MEASURING THE INSTANTANEOUS AMPLITUDE OF THE AC CURVE, WITH A MULTIPLEXER 17 CONNECTED TO A SAMPLING AND MAINTAINING CIRCUIT 21 AND TO AN ANALOGIQUENUMERANT COVER 23 WITH A MICROPROCESSOR 25 TO MEASURE THE INSTANTANEOUS VALUE AT TWO POINTS OF THE SEPARATE CURVE OF AN ODD NUMBER OF HALF CYCLES AND DEDUCE FROM THESE TWO MEASUREMENTS THE CONTINUOUS COMPONENT OF THE SIGNAL. C. THE INVENTION CONCERNS IN PARTICULAR ALTERNATIVE CURRENT NETWORKS.

Switching inverters and converters for power conversion

A switching inverter having two single-ended EF2 inverter sections coupled together with a shared ground and partially shared tunable resonant network that is coupled to at least one load, wherein each inverter section comprises a switching section, and wherein the shared tunable network section allows independent tuning of an impedance seen by the corresponding switching section thereby independently tuning even and odd harmonics of the switching frequency.

Brushless DC Motor

SEMICONDUCTOR DEVICE HAVING PROTECTIVE FUNCTION

Pour la protection d'un module onduleur, un comparateur (C15) compare la tension d'une résistance en dérivation avec une tension de référence, et applique un signal d'anomalie de courant à un circuit de défaut (C10), lorsque la tension détectée dépasse la tension de référence, de façon qu'un signal d'arrêt soit appliqué à un circuit d'attaque de dispositif de puissance (C19), ainsi qu'à un circuit d'entrée (C11), pour arrêter le fonctionnement de transistors de puissance respectifs. Le circuit de défaut (C10) peut également recevoir un signal d'arrêt provenant d'un autre circuit de commande et émettre ce signal vers le circuit d'attaque de dispositif de puissance (C19) et le circuit d'entrée (C11). Cette structure permet de simplifier les interconnexions internes d'un module onduleur. For the protection of an inverter module, a comparator (C15) compares the voltage of a shunt resistor with a reference voltage, and applies a current anomaly signal to a fault circuit (C10), when the voltage detected exceeds the reference voltage, so that a stop signal is applied to a power device driver (C19), as well as to an input circuit (C11), to stop the operation of the device. respective power transistors. The fault circuit (C10) may also receive a stop signal from another control circuit and output this signal to the power device driver circuit (C19) and the input circuit (C11). This structure makes it possible to simplify the internal interconnections of an inverter module.

POWER SUPPLY SYSTEM CONTROL CIRCUIT

DIRECT CURRENT CONVERTER DEVICE

L'INVENTION EST RELATIVE A UN DISPOSITIF CONVERTISSEUR DE COURANT CONTINU. IL COMPREND UN TRANSFORMATEUR DONT LE PRIMAIRE EST ALIMENTE PAR UNE BATTERIE PAR L'INTERMEDIAIRE DE DEUX TRANSISTORS DE PUISSANCE COMMANDES ALTERNATIVEMENT AU MOYEN D'UN CIRCUIT PILOTE, ET EST CARACTERISE PAR LE FAIT QU'IL COMPREND DES MOYENS POUR EMPECHER LA CONDUCTION D'UN DES TRANSISTORS DE PUISSANCE TANT QUE L'AUTRE TRANSISTOR N'EST PAS BLOQUE. APPLICATION AUX ALIMENTATIONS SECOURUES. THE INVENTION RELATES TO A CONTINUOUS CURRENT CONVERTER DEVICE. IT INCLUDES A TRANSFORMER WHOSE PRIMARY IS POWERED BY A BATTERY THROUGH TWO POWER TRANSISTORS CONTROLLED ALTERNATIVELY BY MEANS OF A PILOT CIRCUIT, AND IS CHARACTERIZED BY THE FACT THAT IT INCLUDES MEANS TO PREVENT THE CONDUCTION OF A POWER TRANSISTORS UNTIL THE OTHER TRANSISTOR IS BLOCKED. APPLICATION TO EMERGENCY FOODS.

DEVICE AND METHOD FOR DETECTION OF THE CONTINUOUS COMPONENT OF AN ALTERNATING CURVE

ELECTRICAL ENERGY CONVERSION CIRCUIT

Rectifier circuit for induction heating appliance

L'invention concerne un circuit onduleur de tension en demi-pont, alimentant une charge résonante série. Les commutateurs (1, 2) sont commandés à l'ouverture seulement lorsque l'oscillation précédente a cessé et le circuit de commande ne comprend que des éléments logiques à l'exclusion de composants magnétiques. Ce circuit de commande réalise également les fonctions réglage de puissance et sécurités de température et de présence de charge. Il est remarquable en ce qu'il comporte deux comparateurs connectés au point commun (10) aux deux commutateurs (1, 2) qui détectent la variation du potentiel en ce point.

CONSTANT POWER ELECTRICAL SOURCE

METHOD AND DEVICE FOR CONVERTING THE VOLTAGE OF A CONTINUOUS VOLTAGE SOURCE

SEMICONDUCTOR DEVICE HAVING PROTECTIVE FUNCTION

METHOD AND DEVICE FOR CONTROLLING A ZVS CIRCUIT

La présente invention concerne la commande d'un circuit comportant un onduleur à résonance pour alimenter au moins une charge comportant une composante inductive, lequel onduleur comprend au moins deux interrupteurs (Q1 , Q2 ) montés entre les bornes d'une alimentation en tension continue. Selon l'invention, on crée d'une part, pour chaque interrupteur, un signal de décision de commutation (S1 , S2 ) à deux états représentatifs d'une décision d'ouverture ou de fermeture de l'interrupteur, les deux signaux étant en opposition de phase pour le fonctionnement en push-pull. D'autre part, on détecte (3, 4) les changements de sens du courant (lL ) dans la charge. L'ouverture d'un interrupteur se produit au moment où le signal de décision associé commande l'ouverture. Par contre, la fermeture d'un interrupteur ne se produit que si le signal de décision associé commande la fermeture et après que l'on ait détecté un changement de sens du courant. Application: cuisson par induction. The present invention relates to the control of a circuit comprising a resonant inverter for supplying at least one load comprising an inductive component, which inverter comprises at least two switches (Q1, Q2) mounted between the terminals of a DC voltage supply. According to the invention, on the one hand, a two-state switching decision signal (S1, S2) representative of a decision to open or close the switch is created for each switch, the two signals being in phase opposition for push-pull operation. On the other hand, it detects (3, 4) the changes of direction of the current (lL) in the load. The opening of a switch occurs when the associated decision signal commands the opening. On the other hand, the closing of a switch only occurs if the associated decision signal commands the closing and after a change in direction of the current has been detected. Application: induction cooking.

Sinewave inverter using hybrid regulator

A sinewave inverter for converting unstable DC voltage from a variable source such as batteries, fuel cells, wind mills and the like into a distortionless sinusoidal AC voltage of constant amplitude and constant frequency is provided. This pure sinewave inverter with line and load regulated voltage is obtained by using a combination of a hyperbolic frequency modulator with a sinusoidal pulsewidth modulator in the inverter circuit.

Oscillator circuit power generator for stovetop, has one diode between transistor and voltage supply, and another diode between junction point of inductance and capacitor, and junction point of transistor and former diode

Un générateur d'alimentation d'un circuit oscillant comprenant une inductance (L) et un condensateur de résonance (C3, C4), est adapté à fonctionner à fréquence fixe et comprend au moins une paire de transistors (I1, I2) pilotés suivant un rapport cyclique variable pour modifier la puissance.Ce générateur comprend une première diode (D5) entre un premier transistor (I2) et l'alimentation du générateur et une deuxième diode (D4) entre le point de jonction de l'inductance (L) et du condensateur de résonance (C3, C4) et le point de jonction du premier transistor (I2) et la première diode (D5).Utilisation notamment pour alimenter des foyers de cuisson d'une table de cuisson par induction.