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公开(公告)号：US20220324336A1
公开(公告)日：2022-10-13
申请号：US17714775
申请日：2022-04-06
申请人： ABB Schweiz AG
发明人： Fabio Tombelli
摘要： Disclosed herein is a charger for charging electric vehicles. In one embodiment, the charger includes M AC/DC converters, a DC bus, N DC/DC converters, and D energy exchange ports. The M AC/DC converters are configured to be coupled to a power source at an input side of the M AC/DC converters. The DC bus is connected to an output side of each of the M AC/DC converters. The N DC/DC converters are coupled to the DC bus at an input side of the N DC/DC converters. The D energy exchange ports are coupled to an output side of one or more of the N DC/DC converters at an input side of the D energy exchange ports, and each of the D energy exchange ports is configured to be coupled to an electric vehicle, where N>M, and where an energy storage is coupled to the DC bus.
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公开(公告)号：US20220320893A1
公开(公告)日：2022-10-06
申请号：US17847354
申请日：2022-06-23
发明人： Kazuo HATTORI
摘要： A switching module includes mechanical relays, semiconductor switches, voltage detectors to detect an input voltage to a power converter, and a controller. When the controller determines that the waveform of the input voltage is abnormal during a first determination period, the controller outputs an open command signal to mechanical relays corresponding to a power source electrically coupled to the power converter. When the controller subsequently determines that the waveform of the input voltage is normal during a second determination period, the controller outputs a close command signal to the mechanical relays.
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公开(公告)号：US11451149B2
公开(公告)日：2022-09-20
申请号：US17045627
申请日：2018-05-29
发明人： Kenji Iwazaki , Koichi Arisawa , Takashi Yamakawa , Takuya Shimomugi , Satoru Ichiki , Ikuro Suga
摘要： A power converter is connected between a power supply source of a first direct current power and a power supply destination of a second direct current power obtained by performing power conversion on the first direct current power. The power converter includes: a switching element; a reactor; a first diode; a first capacitor; a second diode. The reactor is connected to a first end of the switching element. The first end of the switching element and a first end of the reactor are connected to a first connection point. A cathode of the first diode is connected to a second end of the reactor. The cathode of the first diode and the second end of the reactor are connected to a second connection point. The second diode includes an anode connected to the first connection point and a cathode connected to the power supply destination.
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公开(公告)号：US20220294397A1
公开(公告)日：2022-09-15
申请号：US17829629
申请日：2022-06-01
摘要： The invention relates to a signal amplifier circuit for amplifying a signal, in particular an audio amplifier circuit, includes at least one first amplifier transistor (Q1) and at least one second amplifier transistor (Q2), wherein the first amplifier transistor (Q1) and the second amplifier transistor (Q2) are connected to one another in a push-pull circuit and are fed by an amplifier voltage source (V+, V−); and one or more bias diodes (D1, D2) thermally coupled in each case to an associated amplifier transistor (Q1, Q2), wherein the bias diodes (D1, D2) are arranged in a parallel connection with respect to the amplifying transistors (Q1, Q2) to reduce or avoid a crossover distortion, wherein the bias diodes (D1, D2) are fed at least partly by a voltage source (UA) which is independent of the amplifier voltage source (V+, V−). The invention furthermore relates to a system and a voltage converter for providing an output-side DC voltage, including a first transformer (T1) and a second transformer (T2) connected to the first transformer (T1).
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公开(公告)号：US11444603B2
公开(公告)日：2022-09-13
申请号：US16888853
申请日：2020-06-01
申请人： King Kuen Hau
发明人： King Kuen Hau
IPC分类号： H03L5/00 , H03K3/012 , H02M1/08 , H02M3/06 , H03K5/00 , H03K19/0175 , H03H5/12 , G06G7/163 , H02M7/06 , H02M1/00 , H02M1/34
摘要： A power control circuit comprising a power supply and a load, the load being synthesized from an impedance synthesizer comprising two-terminal impedance elements connected in series and grouped in impedance modules. The impedance elements in each impedance module are of equal value, while those between the modules bear ratios uniquely defined according to the numbers of impedance elements in the impedance modules. A number of switches associated with said impedance elements short out a selected number of the impedance elements under the control of a first analog signal which may be preprocessed by an analytic function. The analog signal is converted to digital signals by an analog-to-digital converter, then level shifted to control the switches associated with the impedance elements, whereby the amount of power delivered to the load is controllable by the first analog signal. Pulse-width-modulation is deployed to further control the power by a second analog signal, with additional benefit of overload protection.
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公开(公告)号：US11444546B2
公开(公告)日：2022-09-13
申请号：US16851095
申请日：2020-04-17
发明人： Chao Yan , Hongyang Wu , Liping Sun , Jianjun Ni
摘要： The power supply device includes a first winding, a second winding, a third winding, a fourth winding, a first AC-DC conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal. The first and second windings are disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit. The first power supply terminal is coupled to an output of the first AC-DC conversion unit. The third and fourth windings are disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit. The second power supply terminal is coupled to an output of the second AC-DC conversion unit. Phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively shifted left or successively shifted right for 15°.
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公开(公告)号：US11444462B2
公开(公告)日：2022-09-13
申请号：US17167833
申请日：2021-02-04
发明人： Cristian E. Anghel
摘要： Techniques for achieving a constant narrow range DC voltage are disclosed. In an embodiment, a system comprises at least one variable speed, multi-phased generator configured to generate an alternating current (AC) voltage. A plurality of diode rectifier circuits is coupled to the at least one multi-phased generator. The plurality of diode rectifier circuits are configured to convert the AC voltage to a direct current (DC) voltage. A plurality of high-power DC contactors is connected to the plurality of diode rectifier circuits. The plurality of high-power DC contactors is configured to configure outputs of the plurality of diode rectifier circuits in one of a parallel, series, and/or mixed parallel and series configuration. A controller coupled to the plurality of diode rectifier circuits and is configured to reconfigure the plurality of high-power DC contactors based on a control parameter of the at least one multi-phased generator.
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公开(公告)号：US20220263335A1
公开(公告)日：2022-08-18
申请号：US17733278
申请日：2022-04-29
申请人： DENSO CORPORATION
发明人： Kaoru KOUKETSU
摘要： A power conversion device is applicable to a power supply system including a first battery and a second battery having a rated voltage different from a rated voltage of the first battery. The power conversion device includes a charging circuit configured to convert AC power input from an AC power supply into DC power and charge the first battery with the DC power, a voltage converter configured to convert a power supply voltage of the first battery and outputs the converted voltage to the second battery, and an interrupting unit configured to be capable of interrupting a supply of the DC power to the voltage converter during charging of the first battery by the charging circuit.
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19.发明授权公开(公告)号：US11419188B2
公开(公告)日：2022-08-16
申请号：US16643474
申请日：2018-08-13
申请人： LG Electronics Inc.
发明人： Seungbok Ok , Dooyong Oh , Hyunwook Moon , Byeong Wook Park
摘要： An induction heating and wireless power transmitting apparatus includes a first group of working coils including a first working coil and a second working coil connected to each other in parallel, a first inverter that supplies resonant currents to at least one of the first working coil or the second working coil by performing a switching operation, a first semiconductor switch connected to the first working coil configured to turn on and turn off the first working coil, a second semiconductor switch connected to the second working coil and configured to turn on and turn off the second working coil, an auxiliary power supply configured to supply power to the first semiconductor switch and the second semiconductor switch, and a controller that controls the first inverter, the first semiconductor switch, and the second semiconductor switches.
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公开(公告)号：US11413109B2
公开(公告)日：2022-08-16
申请号：US15894212
申请日：2018-02-12
申请人： GYRUS ACMI, INC.
发明人： Kester J. Batchelor , Riyad Moe , Huisun Wang
摘要： An electrosurgical assembly that includes one or more electrodes, and one or more AC conductors electrically connecting the one or more electrodes to a power source that is configured to generate and output an AC power signal to the one or more electrodes via the one or more AC conductors. A rectifier is electrically connected to the one or more AC conductors, and configured to convert the AC power signal into a DC power signal. A light source is electrically powered by the DC power signal.
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