公开(公告)号：US11469674B2

公开(公告)日：2022-10-11

申请号：US17014446

申请日：2020-09-08

Applicant: Delta Electronics, Inc.

Inventor： Da Jin ,  Yahong Xiong ,  Yingjun Li ,  Qinghua Su

IPC: H02M3/158 ,  H02M3/00

Abstract: A power conversion system is provided. The power conversion system includes N power conversion circuits. Each power conversion circuit includes an input, an output, two switching power conversion units and at least one resonant capacitor. The input and output are configured to receive an input voltage and output an output voltage respectively. Each switching power conversion unit includes a plurality of switches and a winding. The plurality of switches operates periodically according to a switching period. A dotted terminal of one winding is electrically coupled to an undotted terminal of the other winding. The two windings are magnetically coupled to each other to form a transformer. In one switching period, the resonant capacitor stores an energy or outputs the stored energy as the corresponding switch is turned on or off. A resonance is generated between the resonant capacitor and inductor with a resonant frequency and a resonant period.

公开(公告)号：US20210075323A1

公开(公告)日：2021-03-11

申请号：US17014446

申请日：2020-09-08

Applicant: Delta Electronics, Inc.

Inventor： Da Jin ,  Yahong Xiong ,  Yingjun Li ,  Qinghua Su

IPC: H02M3/158 ,  H02M3/00

Abstract: A power conversion system is provided. The power conversion system includes N power conversion circuits. Each power conversion circuit includes an input, an output, two switching power conversion units and at least one resonant capacitor. The input and output are configured to receive an input voltage and output an output voltage respectively. Each switching power conversion unit includes a plurality of switches and a winding. The plurality of switches operates periodically according to a switching period. A dotted terminal of one winding is electrically coupled to an undotted terminal of the other winding. The two windings are magnetically coupled to each other to form a transformer. In one switching period, the resonant capacitor stores an energy or outputs the stored energy as the corresponding switch is turned on or off. A resonance is generated between the resonant capacitor and inductor with a resonant frequency and a resonant period.