公开(公告)号：US11909330B2

公开(公告)日：2024-02-20

申请号：US17500519

申请日：2021-10-13

申请人： Delta Electronics (Shanghai) Co., Ltd.

发明人： Guoqiao Shen ,  Guojin Xu ,  Ning He ,  Daidong Pan

IPC分类号： H02M7/538 ,  H02M1/32 ,  G05F1/56

CPC分类号： H02M7/538 ,  G05F1/56 ,  H02M1/32

摘要： A current control device and a power conversion system employing the current control device are provided. The current control device controls N power conversion unit(s), where N is a positive integer. The N power conversion units are connected in parallel when N is greater than 1. Each power conversion unit includes a signal input terminal and a current-controlled output terminal electrically connected to an external circuit. The current control device includes a first current sensor and an error compensator. The first current sensor samples a current flowing through the external circuit and acquires a sampling value. The error compensator receives the sampling value and a reference value and generates a compensation value accordingly, and outputs N current command(s) to the N power conversion unit(s) respectively according to the reference value and the compensation value.