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公开(公告)号：EP4422058A1
公开(公告)日：2024-08-28
申请号：EP22891828.0
申请日：2022-10-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： WU, Zihan , HUANG, Jingjing , JIA, Jia
Abstract: A rectification circuit, apparatus, and method are provided. The rectification circuit includes M rectification units, and M is an integer greater than or equal to 2. An nth rectification unit includes a first switch transistor, a second switch transistor, and a bias circuit, the first switch transistor and the second switch transistor have different turn-on conditions, and n is an integer greater than or equal to 1 and less than or equal to M. A control end of the first switch transistor in the nth rectification unit is driven by a first voltage generated by a bias circuit in an (n-i)th rectification unit, and a control end of the second switch transistor in the nth rectification unit is driven by a second voltage generated by a bias circuit in an (n+j)th rectification unit, where i is an integer greater than or equal to 0, j is an integer greater than or equal to 0, n-i is greater than 0, and n+j is less than or equal to M. The rectification circuit can effectively improve energy conversion efficiency.
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公开(公告)号：EP4160849B1
公开(公告)日：2024-05-01
申请号：EP22192216.4
申请日：2022-08-25
CPC classification number: H02J50/10 , H02M7/217 , H02M3/33576 , H02M7/06 , H02M1/0045 , H02M1/32
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公开(公告)号：EP3105766B1
公开(公告)日：2018-11-14
申请号：EP14719659.6
申请日：2014-04-08
Applicant: Siemens Aktiengesellschaft
Inventor： SCHMITT, Daniel
CPC classification number: H02M1/32 , H01F27/40 , H01F38/023 , H02M7/003 , H02M7/217
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Patent Agency Ranking
公开(公告)号：EP2828966B2
公开(公告)日：2018-10-24
申请号：EP13709318.3
申请日：2013-03-04
Applicant: Sew-Eurodrive GmbH & Co. KG
Inventor： MARAHRENS, Klaus
CPC classification number: H02M1/12 , H02M1/126 , H02M7/003 , H02M7/217 , H02M2001/123
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公开(公告)号：EP3381099A1
公开(公告)日：2018-10-03
申请号：EP16868022.1
申请日：2016-11-24
Applicant: BYD Company Limited
Inventor： HOU, Yongjun , WANG, Wenqing
CPC classification number: H02H7/1225 , H02H7/1216 , H02M1/32 , H02M3/156 , H02M3/33507 , H02M7/217
Abstract: The present disclosure provides a control apparatus of a switch-mode power supply and a switch-mode power supply. In the control apparatus of the present disclosure, a short-circuit protection module is set, and when a switching transistor of the switch-mode power supply is turned on, and the short-circuit protection module detects that a voltage across a current sensing resistor of the switch-mode power supply is less than a predetermined value within a predetermined period, that is, the current sensing resistor is short-circuited, the short-circuit protection module generates a short-circuit protection signal, and a driving controller controls the switching transistor to turn off according to the protection signal, thereby switching off the control apparatus, preventing breakdown of the switch-mode power supply, and avoiding erroneous protection.
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公开(公告)号：EP3255443B1
公开(公告)日：2018-08-22
申请号：EP17171253.2
申请日：2017-05-16
Applicant: Rolls-Royce plc
Inventor： Sathik, Mohamed , Gajanayake, Chandana , Jayasinghe, Shantha , Gupta, Amit , Simanjorang, Rejeki
IPC: G01R31/327 , G01R31/40 , G01R31/26
CPC classification number: G01R31/2617 , G01R31/2621 , G01R31/2637 , G01R31/327 , G01R31/40 , H02M3/158 , H02M7/217 , H02M7/537
Abstract: A method of monitoring the health of a semiconductor power electronic switch such as an insulated gate bipolar transistor (IGBT) is provided. The method having the steps of: measuring one or more parameters selected from the group consisting of: a rate of change of voltage dV dt across the switch; a rate of change of current di dt through the switch, a charge present on a gate of the switch ( Q G ), a peak overshoot voltage ( V PO ) across the switch, and a peak overshoot or reverse recovery current ( I RR ) through the switch; and estimating the health of the switch based on the measured parameter(s).
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9.发明公开
公开(公告)号：EP3355433A1
公开(公告)日：2018-08-01
申请号：EP16847782.6
申请日：2016-04-21
Applicant: Johnson Controls Technology Company , Johnson Controls Air Conditioning And Refrigeration Company (Wuxi) Co., Ltd , York (Wuxi) Air Conditioning And Refrigeration Co., Ltd.
Inventor： MIAO, Yu , XIE, Yongquan , LI, Chengzhi , SHAO, Guobin
IPC: H02H7/20
CPC classification number: H02H7/1257 , H02H7/20 , H02M7/217 , H03K17/0828
Abstract: An IGBT short-circuit detection and protection circuit, comprising: a driving unit, the output end thereof outputting a PWM driving signal and being connected to gate ends of a first IGBT (IGBT1) and a second IGBT (IGBT2), so as to simultaneously control the turning ON/OFF of the first IGBT and the second IGBT; a comparing unit, comprising a threshold pin and a detection pin (Vdesat), the threshold pin being connected to a threshold voltage, the detection pin being connected by means of a first diode (D1) and a second diode (D3) to collectors (C) of the first IGBT and the second IGBT, respectively, the detection pin supplying a detection current to the first diode and the second diode, cathodes of the first diode and the second diode being connected to the collectors of the first IGBT and the second IGBT, respectively; when the voltage at the detection pin is higher than the threshold voltage, the driving unit controlling the first IGBT and the second IGBT to be turned off. The IGBT short-circuit detection protection circuit achieves bidirectional short-circuit protection of two IGBTs in inverse series connection, without requiring an additional protection circuit.
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公开(公告)号：EP3282569A4
公开(公告)日：2018-07-11
申请号：EP17746711
申请日：2017-01-07
Inventor： TIAN CHEN , ZHANG JIALIANG
CPC classification number: H02J7/06 , H02H3/202 , H02H7/18 , H02J7/0022 , H02J7/0029 , H02J7/0031 , H02J7/007 , H02J7/008 , H02J7/0093 , H02J7/022 , H02J7/027 , H02J7/04 , H02J7/041 , H02J7/045 , H02J7/047 , H02J2007/0062 , H02J2007/0096 , H02J2007/0098 , H02M1/08 , H02M3/335 , H02M3/33507 , H02M3/33523 , H02M3/33576 , H02M3/33592 , H02M7/217 , H02M2001/0009
Abstract: A charging system, a surge voltage protection method when charging a device (2) and a power adapter (1), wherein the charging system comprises: a power adapter (1) and a device (2). The power adapter (1) comprises: a first rectifying unit (101), a switching unit (102), a transformer (103), a second rectifying unit (104), a first charging port (105), a second voltage sampling circuit (114), a control unit (107), and a comparing unit (115); the control unit (107) adjusts a duty cycle of a control signal, such that the voltage of a third pulsation waveform outputted from the second rectifying unit (104) satisfies charging needs; the comparing unit (115) applies a comparison signal to the switching unit (102) when a sampled voltage is greater than a reference voltage, so as to control the switching unit (102) to enforce forcible turn-on. The device (2) comprises a second charging port (201) and a battery (202) ; the second charging port (201) and the battery (202) are connected; when the second charging port (201) is connected to the first charging port (105), the second charging port (201) applies the voltage of the third pulsation waveform to the battery (202), such that the voltage of a pulsation waveform which is outputted by the power adapter (1) is directly applied to the battery (202), thus implementing safety protection against lightning.
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