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81. 发明授权

US11349383B2 Fault protection method used in multiphase switching converters with daisy chain configuration 有权
公开(公告)号：US11349383B2
公开(公告)日：2022-05-31
申请号：US16934400
申请日：2020-07-21
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Yongheng Sun
IPC分类号： H02M1/32 , H02M3/158
摘要： A fault protection method used in a multiphase switching converter which includes a plurality of switching circuits coupled in parallel and a plurality of control circuits configured in a daisy chain. Each control circuit has a first terminal coupled to a phase control signal, a second terminal coupled to a previous control circuit in the daisy chain to receive a phase input signal, and a third terminal coupled to a latter control circuit in the daisy chain to provide a phase output signal. The fault protection method includes: configuring a first control circuit as a master control circuit to provide the phase control signal; respectively configuring the rest of the control circuits as a slave control circuit to receive the phase control signal; if a fault condition is detected in the first control circuit, changing the first control circuit into a slave control circuit and generating a second pulse on the phase output signal of the first control circuit; and if a second pulse is detected on a phase input signal of a second control circuit, changing the second control circuit into a master control circuit.

82. 发明授权

US11342851B2 Modular DC power supply with independent output converters 有权
公开(公告)号：US11342851B2
公开(公告)日：2022-05-24
申请号：US14376887
申请日：2013-01-14
申请人： Siemens Aktiengesellschaft
发明人： Christian Augesky
IPC分类号： H02M3/335 , G05F1/577 , H02M3/158 , H02M1/42 , H02M1/00 , H02M1/32
摘要： A power supply with a DC-DC converter and a switching converter comprises an intermediate circuit and at least one output switching regulator. The intermediate circuit has an intermediate circuit voltage, and is connected to a supply voltage via the DC-DC converter. The at least one output switching regulator is connected to the intermediate circuit, and configured to supply, on the output side, a regulated output voltage.

83. 发明授权

US11342735B2 Solid-state line disturbance circuit interrupter 有权
公开(公告)号：US11342735B2
公开(公告)日：2022-05-24
申请号：US17224067
申请日：2021-04-06
申请人： INTELESOL, LLC
发明人： Mark Telefus , Bradley Larson , Harry Rodriguez , Stephen C. Gerber
IPC分类号： H02H3/00 , H02H9/08 , H02H3/33 , H02H1/00 , H02M7/217 , G01R15/20 , G01R19/00 , H02H1/06 , H02H3/50 , H02M1/32 , H02M7/06 , H02H3/52
摘要： The invention relates to a novel approach for the protection of electrical circuits from ground faults and parallel and series arc faults in a fully solid-state circuit configuration. Solid-state circuits and methods of use are described that provide the key functions of low-voltage DC power supply, mains voltage and current sensing, fault detection processing and high voltage electronic switching.

84. 发明授权

US11336195B2 Power conversion apparatus that determines, based on a set of data, whether it is operable to perform an output 有权
公开(公告)号：US11336195B2
公开(公告)日：2022-05-17
申请号：US16765039
申请日：2018-11-19
申请人： NETUREN CO., LTD.
发明人： Takahiko Kanai , Haruki Yoshida
IPC分类号： H02M1/32 , H02M5/458 , H02M7/537 , H05B6/04 , H05B6/06 , H02M7/48
摘要： A power conversion apparatus includes a rectifier to convert AC power into constant-current DC power, a resonant inverter to convert the DC power into AC power to be output to a load, and a control unit to receive settings of an output current value of the inverter, a current-supplying time of the inverter, an operation rate defined by dividing the current-supplying time by a sum of the current-supplying time and a non-current-supplying time, and a resonance frequency of the load. The control unit operates the rectifier and the inverter only when it determines that it is operable to perform an output in accordance with the set conditions, based on data in which the output frequency, the current-supplying time and the operation rate are associated with an allowable output current value of the inverter at a temperature equal to or lower than a maximum operable temperature of a switching device.

85. 发明授权

US11336169B2 Power conversion device 有权
公开(公告)号：US11336169B2
公开(公告)日：2022-05-17
申请号：US17292232
申请日：2018-12-25
申请人： Mitsubishi Electric Corporation
发明人： Takuya Kajiyama , Toshiyuki Fujii , Shuhei Fujiwara , Ryosuke Uda , Kazuyori Tahata
IPC分类号： H02M7/02 , H02M1/32 , H02M7/49 , H02M7/5387
摘要： A power converter includes an arm in which a plurality of converter cells are connected in series, each of the converter cells including at least two switching elements, a power storage element and a pair of output terminals. A control device controls the power converter. The converter cell includes a switch to have the converter cell bypassed. When the control device senses failure of the converter cell, it has the failed converter cell bypassed, estimates an output voltage lost by bypassing the failed converter cell, and has a normal converter cell supply the estimated output voltage of the failed converter cell.

86. 发明授权

US11333694B2 Alarm signal generator circuit and alarm signal generation method 有权
公开(公告)号：US11333694B2
公开(公告)日：2022-05-17
申请号：US14329024
申请日：2014-07-11
申请人： FUJI ELECTRIC CO., LTD.
发明人： Takahiro Mori , Akira Nakamori
IPC分类号： G01R23/15 , G01R31/42 , H03K17/18 , H02M1/32
摘要： With regard to an instrument wherein a plurality of phase operations are carried out, the type of failure or the phase in which the failure has occurred is determined and, in accordance with the result of the determination, an alarm signal is generated. Provided that the failure details and the phase in which the failure has occurred can be determined from the generated alarm signal, it is possible, using a configuration wherein an alarm signal having a pulse number corresponding to the phase in which a failure has occurred is generated, or a configuration wherein an alarm signal having a pulse width corresponding to the phase in which a failure has occurred is generated, to determine the type of failure that has occurred and the phase in which the failure has occurred from the pulse number and pulse width.

87. 发明申请

US20220149720A1 SELF-OSCILLATING HIGH FREQUENCY CONVERTER WITH POWER FACTOR CORRECTION 有权
公开(公告)号：US20220149720A1
公开(公告)日：2022-05-12
申请号：US17498426
申请日：2021-10-11
申请人： NexGen Power Systems, Inc.
发明人： Charles Coles
IPC分类号： H02M1/42 , H02M1/00 , H02M1/32 , H05B45/3725
摘要： A self-oscillating converter includes a power transistor coupled to a primary winding for controlling current flow in the primary winding, and a turn-on circuit configured to turn on the power transistor for maintaining oscillation in the self-oscillating converter. The self-oscillating converter also includes a turn-off circuit configured to turn off the power transistor to maintain an on-time of the power transistor at a pre-set value for power factor correction, and modulate the on-time of the power transistor to regulate the output current in the load device.

88. 发明授权

US11329543B2 Device having switching power source operable in burst switching control mode 有权
公开(公告)号：US11329543B2
公开(公告)日：2022-05-10
申请号：US16826508
申请日：2020-03-23
申请人： Brother Kogyo Kabushiki Kaisha
发明人： Yoshiyuki Tsujimoto , Yuya Harada , Keisuke Manoh , Masato Sueyasu
IPC分类号： H02M3/335 , H02M1/00 , H02M1/32 , H02M1/08
摘要： A device includes a driving portion, a transformer having a primary winding and a secondary winding, the secondary winding generating an output voltage, the driving portion being connected across the secondary winding so that the output voltage is applied to the driving portion, a switching element connected in series to the primary winding, a first controller provided in a primary side of the transformer for controlling the switching element, and a second controller supplied with the output voltage. The second controller is configured to perform, during implementation of a burst switching control, transmitting a stop signal to the first controller when the output voltage exceeds a first voltage, and transmitting, after transmission of the stop signal, a resumption signal to the first controller when the output voltage falls below a second voltage lower than the first voltage. The first controller controls the switching element to stop performing switching operations in response to the stop signal, and further controls the switching element to resume performing the switching operations in response to the resumption signal.

89. 发明授权

US11323032B2 Plural power modules conversion device with switch element control 有权
公开(公告)号：US11323032B2
公开(公告)日：2022-05-03
申请号：US16957722
申请日：2017-12-28
申请人： SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
发明人： Kenichi Suzuki , Wataru Miyazawa
IPC分类号： H02M3/158 , H02M1/32 , H02M1/088 , H02M1/08
摘要： A power conversion device according to the present invention is provided with two or more sets of power modules each of which includes a switching element and a switching element control circuit having a third electrode voltage control part and a temperature detection part. The power modules PM1, PM2 are connected in parallel to each other. The switching element control circuit includes a temperature comparison part which calculates an average operation temperature of the switching element, and compares an operation temperature of the corresponding switching element and the average operation temperature. The third electrode voltage control part controls a third electrode voltage based on information including an average operation temperature, an operation temperature of the switching element, and a threshold voltage during operation.

90. 发明授权

US11323020B2 Circuit device having a power converter and a capacitor discharge device 有权
公开(公告)号：US11323020B2
公开(公告)日：2022-05-03
申请号：US16750075
申请日：2020-01-23
申请人： SEMIKRON ELEKTRONIK GMBH & CO. KG
发明人： Roland Bittner , Jochen Kraus , Robin Koschinski , Sebastian Hettrich
IPC分类号： H02J7/00 , H02M1/32 , H02M7/5387
摘要： A circuit device has a power converter, which includes power semiconductor switches and a capacitor which is connected to a first and a second intermediate circuit conductor in an electrically conductive manner, and having a capacitor discharge device for the electrical discharging of the capacitor. The capacitor discharge device includes an actuation device, an electrical discharge resistor and a first semiconductor switch having a first and a second load current terminal, and having a control terminal. The first load current terminal of the first semiconductor switch is connected to the first intermediate circuit conductor via the discharge resistor, and the second load current terminal of the first semiconductor switch connects to the second intermediate circuit conductor. The actuation device on the control terminal of the first semiconductor switch generates an actuating voltage, in accordance with a control signal, for the closing and opening of the first semiconductor switch, and having a capacitor discharge monitoring device, which is designed to monitor an electric monitoring voltage which is present between the first load current terminal of the first semiconductor switch and the second intermediate circuit conductor and, in the event that the monitoring voltage is lower than a monitoring voltage limiting value, to generate a capacitor discharge signal.

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