公开(公告)号：US20210036628A1

公开(公告)日：2021-02-04

申请号：US17073678

申请日：2020-10-19

Applicant: ABB Schweiz AG

Inventor： Ke Dai ,  Derong Lin ,  Chengjing Li ,  Tian Tan ,  Tinho Li ,  Kai Tian

IPC: H02M5/458 ,  H02M1/14 ,  H02P27/08

Abstract: A system and a method for power conversion. The system includes a rectifier; an inverter; a DC-link capacitor coupled between the rectifier and the inverter; and a controller. The controller is configured to obtain a current value at an output of the inverter and a voltage value across the DC-link capacitor, determine an average component and a fluctuating component of an output voltage of the inverter based on the obtained current value and the voltage value, and determine a current reference for controlling the rectifier based on the average component and the fluctuating component of the output voltage.

公开(公告)号：US11476771B2

公开(公告)日：2022-10-18

申请号：US17073678

申请日：2020-10-19

Applicant: ABB Schweiz AG

Inventor： Ke Dai ,  Derong Lin ,  Chengjing Li ,  Tian Tan ,  Tinho Li ,  Kai Tian

IPC: H02M5/458 ,  H02M1/14 ,  H02P27/08

Abstract: A system and a method for power conversion. The system includes a rectifier; an inverter; a DC-link capacitor coupled between the rectifier and the inverter; and a controller. The controller is configured to obtain a current value at an output of the inverter and a voltage value across the DC-link capacitor, determine an average component and a fluctuating component of an output voltage of the inverter based on the obtained current value and the voltage value, and determine a current reference for controlling the rectifier based on the average component and the fluctuating component of the output voltage.