General Electric Company

Ge Energy Power Conversion Technology Gmbh

Delta Electronics (shanghai) Co., Ltd

Shanghai Zhongke Shenjiang Electric Vehicle Co., Ltd

Yingqi Zhang

Fan Zhang

Tao Wu

Saijun Mao

Jie Shen

Kunlun Chen

Stefan Schroeder

Yunfeng Liu

Pengju Kang

Fei Xu

Richard S Zhang

Xiaoming Yuan

Ying Zhang

Chao Yang

Zhihui Yuan

Viktor Karoly Varga

Pengcheng Zhu

Bo Qu

Xin Hao

Rajendra Kumar Pokharna

Xiaoli Yao

Jun Wang

Jian Wang

Jianwu Li

Zhuohui Tan

Charles Adrian Becker

Wenqiang Yang

Lin Lan

Xueqin Wu

Brian Eric Lindholm

Baohua Wang

Laigui Qin

Yazhu Zhao

Yao Tao

He Xu

Marius Michael Mechlinski

Li Feng Lin

Jingkui Shi

Ming Su

Wuhua Li

Qingwen Zeng

Junhui Fei

The present application provides a driving circuit of power devices, a switching circuit and a power conversion circuit. The driving circuit is configured to control switching actions of N power devices connected in parallel, where N≥2 and N is a positive integer; the driving circuit includes a driving input circuit and a common magnetic bead, where a first end of the driving input circuit is electrically connected to N first ends of the common magnetic bead, N second ends of the common magnetic bead are electrically connected to control ends of the N power devices in a one-to-one correspondence, and a second end of the driving input circuit is electrically connected to second ends of the N power devices.

Driving circuit of power devices, switching circuit and power conversion circuit

It is a system for supplying power to at least one load. The system comprises at least one power source, load bank and control device coupled to the at least one load. The load bank is coupled to at least one power source and at least one load. The load bank comprises a controllable voltage source, at least three resistors coupled between an output side of the controllable voltage source and the at least one power source, and at least one storage element. The controllable voltage source comprises more than one switches. And the at least one storage element comprises one or more capacitors, batteries, or combinations thereof. The control device is configured for controlling the switches during a first condition such that, to the extent that an output power of the at least one power source exceeds a requisite power of the at least one load, any excess output power is either supplied to the at least one storage element or consumed by the at least three resistors. This invention also provides a method for supplying power to at least one load.

System and method for supplying power to at least one load

An electric coupler includes a body, a first electrical path through the body having a first resistance to electric current within a first frequency range and a second electrical path through the body having a second resistance to electric current within a second frequency range.

Electrical coupler, power converter, and method

A method for controlling a plurality of series connected switch modules each including at least two parallel connected electronic switches, the method includes the step of, in response to failure of any electronic switch of one or more switch modules, turning on any non-faulty electronic switch of one or more faulty switch modules when the electronic switches of other non-faculty switch modules are controlled to be turned on.

Electronic apparatus and system and method for controlling series connected switch modules

The present disclosure relates to a snubber circuit which comprises a static snubber unit, connected in parallel with the switch, for balancing a static voltage sharing across a switch when the switch is in a state of turn-on or turn-off; and a dynamic snubber unit for balance a dynamic voltage sharing across the switch when the switch is in a process of turn-on or turn-off, comprising a dynamic voltage sharing capacitor connected in parallel with the switch and having a relationship between a capacitance and a voltage of the dynamic voltage sharing capacitor; and a controller for controlling the capacitance of the dynamic voltage sharing capacitor to be in a predetermined working area of capacitance rising while the voltage across the switch is increasing. The present disclosure also relates to a power semiconductor device.

Power semiconductor device and snubber circuit thereof

A direct current (DC) circuit breaker for power transmission or distribution system includes a current sensor for sensing current of a system, a controller, a physical switch, and multiple switch modules. The multiple switch modules are electrically coupled to the current sensor and the physical switch in series. Each switch module includes multiple base elements electrically coupled in parallel. Each base element includes a first silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) and a second SiC MOSFET electrically coupled in an opposite series connection mode. The first and second SiC MOSFETs are configured in a synchronous rectification mode by channel reverse conduction control. The controller controls the multiple switch modules to connect current in the system, and break current of the multiple switch modules according to sensed current signals from the current sensor.

Device and method to break the current in power transmission or distribution system

A method used to control the operation of a converting device such that it can provide multi-level output voltage for loads. This method comprises at least the steps of: determine whether the load which the converter is providing electricity for is operating under the first condition or the second condition; generate the first pulse signal after determining that this load is operating under the first condition, select at least one of at least three different current paths, such that when the converter is selecting any of the current paths, it can provide output voltage at the same level; as well as generate the second pulse signal after determining that this load is operating under the second condition, such that the converter can perform the regular energy conversion operations.

System and method for power conversion

A circuit includes a switching module, a control module, and a driving module. The driving module is electrically coupled between the control module and the switching module for generating a driving signal. The driving module includes a normal driving unit and a fault protection unit. The normal driving unit is for turning on and off the switching module according to a first command signal from the control module. The fault protection unit is for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal.

Power conversion circuit having fault protection and voltage balance functions

A circuit includes first and second electronic switches, first and second excitation circuits, and first and second inductors. The first and second electronic switches are electrically coupled in series. The first and second excitation circuits are used for respectively controlling the first and second electronic switches to be turned on and turned off and are configured to synchronously switch the first and second electronic switches. The first inductor is electrically coupled between the first excitation circuit and the first electronic switch, for transmitting the switch control signal of the first excitation circuit to the first electronic switch. The second inductor is electrically coupled between the second excitation circuit and the second electronic switch, for transmitting the switch control signal of the second excitation circuit to the second electronic switch.

Circuit for synchronously switching series connected electronic switches

A system having an alternating current (AC) driven LED unit, an AC voltage regulator, and a controller is provided. The AC driven LED unit includes a first LED and a second LED coupled in reverse parallel. The AC voltage regulator is operable to receive AC voltage originating from an AC voltage source, regulate the AC voltage according to control signals from the controller, and apply regulated AC voltage to the AC driven LED unit, so as to enable the first LED and the second LED to emit light according to the regulated AC voltage. In addition, a method is provided for driving the LED by regulating the AC voltage. By regulating the AC voltage using the AC voltage regulator, benefits of restraining voltage fluctuations, reducing THD, improving power factor, providing dimming control, and mitigating flicker phenomenon can be achieved.

System and method for driving light emitting diodes

A semiconductor module comprising a plurality of electrically conductive top plates, an electrically conductive base plate, a plurality of semiconductor chips installed on the base plate, a first power supply connected to the plates, a second power supply connected to the plates and an electrically insulating outer casing component. The semiconductor chips are individually in contact with the top plates. Each semiconductor chip comprises a first electrode electrically coupled with the base plate, and a second electrical pole electrically coupled with the corresponding top plate. The first power supply connecting plate is equipped with protruding parts that are individually in electrical contact with the top plates. The second power supply connecting plate is electrically connected to the base plate. The outer casing component is used to integrate the first power supply connecting plate and the second power supply connecting plate. The outer casing component comprises at least one opening.

Semiconductor module for high pressure applications

An assembly includes an insulated gate bipolar transistor (IGBT), a gate driver and a short-circuit protection circuit. The gate driver is adapted to supply voltage to a gate terminal of the IGBT. The short-circuit protection circuit includes an IGBT short-circuit detector for determining whether the IGBT is short-circuited, and a supply voltage regulator for regulating the supply voltage in response to the IGBT short-circuit detector determining that the IGBT is short-circuited.

Short circuit protection circuit and method for insulated gate bipolar transistor

A protection system includes a control module, a switch, and an inductive device. The control module is used to provide control signals and switching signals based at least in part on a detected signal measured by a detecting device. The control signals include a first control signal corresponding to a normal mode and a second control signal corresponding to a fault mode. The switch is switched on and off according to the switching signals. The inductive device is coupled with the switch. The inductive device is controlled to be operated with a first inductance in response to the first control signal provided from the control module and a second inductance in response to the second control signal provided from the control module.

System and method for fault protection

A control method for idling anti-rollback of a pure electric vehicle is provided, where the pure electric vehicle has a vehicle controller, a motor controller, a motor, a brake pedal, a handbrake device, an accelerator pedal, and a power battery. The method makes use of the differences between a pure electric vehicle from conventional cars, and collects the states of individual parts of the vehicle through the vehicle controller, and controls the output of the torque of the motor based on the state information of various control components, to prevent the vehicle located on a slope from rolling back, and makes the vehicle move forward at idle.

Control method for idling anti-rollback of pure electric vehicle

An amplifier comprises a power source, a load network comprising a load and a resonance circuit, an input branch having a first end electrically coupled to the power source and a second end electrically coupled to the load network, and an active switch having one terminal electrically coupled to the second end of the input branch. The input branch including at least one parallel-LC-circuit configured to provide an infinitely large impedance at harmonics of a determined order.

Class-E amplifier and lighting ballast using the amplifier

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Shanghai, China

Yingqi Zhang