公开(公告)号：US20220416679A1

公开(公告)日：2022-12-29

申请号：US17622234

申请日：2021-02-04

Applicant: SOUTHEAST UNIVERSITY

Inventor： Zheng WANG ,  Yang XU ,  Pengcheng LIU ,  Zhixiang ZOU ,  Ming CHENG

IPC: H02M5/297 ,  H02M3/335 ,  H02M1/00

Abstract: A current fed high-frequency isolated matrix converter and the corresponding modulation and control schemes are provided. The converter includes a current source full-bridge converter, a high-frequency transformer, a matrix converter, and a three-phase filter. An optimized space vector modulation solution is used for controlling the converter, and by comparing magnitudes of three-phase filter capacitor voltages to determine an action sequence of space vectors, switch tubes are turned on at zero voltage. A current source full-bridge circuit adopts a commutation strategy of a secondary clamping, and by calculating a leakage inductive current commutation time, full-bridge switch tubes are turned off at zero current to achieve safe and reliable commutation, and having advantages of a low system loss, a high efficiency, and a high power density.