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51. 发明申请

US20220320996A1 POWER SUPPLY SYSTEM AND POWER SUPPLY DEVICE 有权
公开(公告)号：US20220320996A1
公开(公告)日：2022-10-06
申请号：US17700594
申请日：2022-03-22
申请人： Yokogawa Electric Corporation
发明人： Yuusuke Shimizu , Kei Fukuhara , Iwao Nakanishi
IPC分类号： H02M1/32 , H02M1/00 , H02J1/10
摘要： A power supply system includes at least two power supply devices that supply a current to a load. Each of the at least two power supply devices includes a converter configured to generate a current that is to be supplied to the load, an FET that is connected in series between the converter and the load, a gate voltage monitoring circuit configured to monitor whether a gate voltage of the FET has fallen below a predetermined first reference voltage, and an alarm generation circuit configured to generate an alarm according to a result of monitoring by the gate voltage monitoring circuit.

52. 发明申请

US20220320991A1 REMOTE TEMPERATURE SENSING WITH LOAD-LINE 有权
公开(公告)号：US20220320991A1
公开(公告)日：2022-10-06
申请号：US17219951
申请日：2021-04-01
申请人： Infineon Technologies Austria AG
发明人： Jayadevan RADHAKRISHNAN , Jens A. EJURY
IPC分类号： H02M1/00 , H02M1/32 , G01K7/02 , G01K1/024
摘要： A controller for a power converter includes an output terminal operative to output a modulation signal for controlling a phase current of the power converter. A modulator is operative to generate the modulation signal such that an output voltage of the power converter follows a first portion of a load-line when load current is above a first threshold, the first portion of the load-line having a first slope that determines a rate of change of the output voltage as a function of the load current. An interface is operative to receive a temperature signal. Circuitry is operative to change the first threshold in response to receipt of the temperature signal.

53. 发明申请

US20220311352A1 CONVERTER AND METHOD FOR OPERATING SAME 有权
公开(公告)号：US20220311352A1
公开(公告)日：2022-09-29
申请号：US17616801
申请日：2019-06-06
申请人： Siemens Energy Global GmbH & Co. KG
发明人： Maxime Delzenne , Guenter Ebner
IPC分类号： H02M7/483 , H02M1/00 , H02M1/32
摘要： An electrical converter has an alternating-voltage side with at least two alternating-voltage terminals and a direct-voltage side. At least two series connections connected in parallel and each forming a converter arm of the converter assigned to one of the alternating-voltage terminals. Circular currents can flow between the series connections. According to the method, a load value describing the thermal load of the converter is calculated based on: an active power current value that indicates the active power current component of a phase current flowing across one of the alternating-voltage terminals; a reactive power current value that indicates the reactive power current component of the phase current flowing across the alternating-voltage terminal; and a circular current value that indicates the magnitude of the circular current(s) flowing between the series connections. The converter is controlled while also taking into account this load value.

54. 发明申请

US20220311325A1 LIQUID COOLED CURRENT SENSOR ASSEMBLIES 有权
公开(公告)号：US20220311325A1
公开(公告)日：2022-09-29
申请号：US17212199
申请日：2021-03-25
申请人： FORD GLOBAL TECHNOLOGIES, LLC
发明人： Fan WANG , Serdar Hakki YONAK , Yantao SONG , Miao WANG
IPC分类号： H02M1/32 , H05K7/20 , H02M7/00 , H05K7/14 , H02K11/33
摘要： This disclosure is directed to power systems for transferring power between electrical components. An exemplary power system includes a first electrical component (e.g., an inverter system) having a current sensor assembly for detecting current flowing between the first electrical component and a second electrical component (e.g., an electric motor) in order to more reliably manage and control operation of the second electrical component. The current sensor assembly may include an integrated cooler that includes an internal cooling circuit configured to circulate coolant for cooling one or more bus bars of the current sensor assembly.

55. 发明申请

US20220302823A1 Electrical Power Regulating Apparatus 有权
公开(公告)号：US20220302823A1
公开(公告)日：2022-09-22
申请号：US17641411
申请日：2020-09-09
申请人： Elexsys IP Pty Ltd
发明人： Bevan HOLCOMBE
IPC分类号： H02M1/32 , H02M1/34 , H02M1/00 , H02M1/44 , H05K1/02 , H02J3/32 , H02J3/38 , H02J7/34
摘要： The invention relates to an apparatus for regulating electrical power in an electricity transmission network, the apparatus including: a DC contactor; a transmission network connector including live terminal(s) connected to live connection(s) and a neutral terminal connected to a neutral or earth of the electricity transmission network; switches connected to the DC contactor; electronic controlling devices coupled to the switches and control the switches to independently regulate electrical power on each of the live connection(s) and the neutral connection, the electronic controlling devices receive voltage reading of the live connection(s); calculate average of the voltage reading for the live connection(s); if the average is larger than an upper value, control the switches to reduce voltage on the live connection; if the average is less than a lower value, control the switches to increase voltage supplied on the live connection(s).

56. 发明授权

US11448710B2 Regenerative load bank systems and methods 有权
公开(公告)号：US11448710B2
公开(公告)日：2022-09-20
申请号：US16354544
申请日：2019-03-15
申请人： Hamilton Sundstrand Corporation
发明人： Michael J. Hanson
IPC分类号： H02M1/00 , H02M7/217 , H02M1/088 , H02M1/32 , G01R31/42 , G01R31/317 , H02M7/219
摘要： A regenerative load system includes a voltage input and a load current regulator electrically connected to the voltage input. The system includes a fly back rectifier electrically connected to the load current regulator. A current output is electrically connected to the fly back rectifier. A system for regeneratively testing electrically powered equipment includes a power source. The system includes a unit under test (UUT) having a voltage input electrically connected to the power source, a regenerative load system electrically connected to the UUT. The regenerative load system (RLS) includes a RLS voltage input electrically connected to the UUT, a load current regulator electrically connected to the RLS voltage input, a fly back rectifier electrically connected to the load current regulator, and a current output electrically connected to the fly back rectifier. The current output is configured and adapted to provide current the UUT and/or the power source.

57. 发明申请

US20220294362A1 FLYING CAPACITOR-TYPE NPC THREE-LEVEL TOPOLOGY 有权
公开(公告)号：US20220294362A1
公开(公告)日：2022-09-15
申请号：US17636161
申请日：2020-05-25
申请人： Sungrow Power Supply Co., Ltd.
发明人： Wei Liu , Jiaci Zhuang , Jun Xu
IPC分类号： H02M7/483 , H02M7/487 , H02M1/32 , H02M1/00
摘要： A flying capacitor-type NPC three-level topology, comprising: two half-busbar capacitors and at least one bridge arm. The bridge arm comprises: a flying capacitor, two inner transistor units, two outer transistor units, and two clamping diodes, wherein the capacitance of the flying capacitor is greater than a specific value. Since the flying capacitor has a clamping effect on the two inner transistor units and the capacitance of the flying capacitor is large, voltage fluctuations of the flying capacitor would not cause overvoltage of switching transistors no matter what type of short circuit fault occurs, thereby preventing the switching transistor units from being damaged due to overvoltage and further improving the security of a circuit.

58. 发明申请

US20220294361A1 METHOD AND APPARATUS FOR DETECTING SHORT CIRCUIT OF INVERTER, AND INVERTER 有权
公开(公告)号：US20220294361A1
公开(公告)日：2022-09-15
申请号：US17826395
申请日：2022-05-27
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： Zhiwu XU , Yongbing Gao , Niantao Jiang
IPC分类号： H02M7/48 , H02M1/32 , H02J3/38 , H02S40/32
摘要： A method and an apparatus for detecting a short circuit of an inverter, and an inverter are provided. A voltage of a common bus is increased when a plurality of boost circuits in the inverter are all in a non-working state, and after circuit parameters of input sides of all the plurality of boost circuits are detected, a boost circuit in which a diode is short-circuited in the plurality of boost circuits is further determined based on the circuit parameters of the input sides of the boost circuits. According to the method and the apparatus for detecting a short circuit of an inverter, and the inverter, circuit complexity of the inverter can be reduced, and circuit complexity of a photovoltaic power generation system including the inverter is reduced.

59. 发明授权

US11444551B2 Power conversion device with inverter circuit 有权
公开(公告)号：US11444551B2
公开(公告)日：2022-09-13
申请号：US16966975
申请日：2018-12-26
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Takashi Ogura , Ryuji Kurihara , Ryoichi Inada
IPC分类号： H02M7/5387 , G01R19/165 , H02H5/04 , H02H7/122 , H02J9/06 , H02M1/08 , H02M1/32 , H02P27/06 , H02M1/00
摘要： An object of the present invention is to improve availability when a power is lost. In a power conversion device 1, a gate drive power supply circuit 50 can supply a gate drive power within a predetermined normal voltage range. A backup power supply circuit 70 supplies the gate drive power to a lower arm gate circuit 40 when a voltage of the gate drive power applied from the gate drive power supply circuit 50 to the lower arm gate circuit 40 falls below a normal voltage range. When the gate drive power is supplied from the backup power supply circuit 70, the lower arm gate circuit 40 drives a lower arm switching circuit 22 in a short state in which all switching elements of the lower arm switching circuit 22 are turned on.

60. 发明授权

US11444528B2 Motor controller electrical-discharge control circuit 有权
公开(公告)号：US11444528B2
公开(公告)日：2022-09-13
申请号：US17042902
申请日：2019-03-13
申请人： JING-JIN ELECTRIC TECHNOLOGIES CO., LTD
发明人： Yuxia Qu , Hao Zhang , Ying Wang
IPC分类号： H02M1/32
摘要： The present disclosure discloses a discharge controlling circuit of an electric-motor controller, wherein the discharge controlling circuit includes a discharging-signal transmitting circuit, a switch circuit and a discharging circuit; the switch circuit is connected respectively to the discharging-signal transmitting circuit and the discharging circuit; the discharging circuit is connected to an anode of a busbar; an input end of the discharging-signal transmitting circuit is connected to a discharging-signal outputting pin of the electric-motor controller, and an output end of the discharging-signal transmitting circuit is connected to a cathode of the busbar; the discharging-signal transmitting circuit is configured to output a controlling signal to the switch circuit according to a received discharging signal; and the switch circuit is connected to the anode of the busbar, the cathode of the busbar and the output end of the discharging-signal transmitting circuit, and is configured to be turned on according to the received controlling signal and discharge via the discharging circuit. The discharge controlling circuit of an electric-motor controller of the present embodiment can realize active quick discharging, which prevents the risk of high-voltage leakage, and guarantees the safety of the electric-motor controller.

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