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公开(公告)号:US11811310B2
公开(公告)日:2023-11-07
申请号:US17447069
申请日:2021-09-08
CPC分类号: H02M3/04 , H02M7/04 , H02J7/0013
摘要: Embodiments of the present disclosure provide a power conversion system and a control method. The power conversion system includes multiple power modules, and each power module includes a first port, a second port, and a third port, where the first port of each power module is connected to an external device, second ports of the power modules are independent of each other and used as independent ports to output power, third ports of the power modules are connected in parallel to form a power bus and power flow of the third port of each power module is bidirectional.
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公开(公告)号:US11811297B2
公开(公告)日:2023-11-07
申请号:US17658656
申请日:2022-04-11
发明人: Hong Liu , Jie Kong , Wen Zhang , Baihui Song , Cheng Lu , Hongyang Wu
CPC分类号: H02M3/24 , H02J7/0013 , H02J2207/20
摘要: A power module includes N inverter units outputting N AC voltages and being coupled to N high-frequency AC terminals, wherein the N high-frequency AC terminals are cascaded and connected to a post-stage rectifier circuit. A phase-shift control method for the power module includes: setting at least two phase-shift sequences, wherein phase sequence numbers of the N AC voltages of the N inverter units are different in the at least two phase-shift sequences; in one switching period, controlling the N AC voltages of the N inverter units to shift a first angle according to a first phase-shift sequence of the at least two phase-shift sequences; and in another switching period, controlling the N AC voltages of the N inverter units to shift the first angle according to a second phase-shift sequence of the at least two phase-shift sequences.
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