公开(公告)号：US20240195293A1

公开(公告)日：2024-06-13

申请号：US18528368

申请日：2023-12-04

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Dong Myoung JOO ,  Jun Hyuk CHOI ,  Joon Sung PARK ,  Jin Hong KIM ,  Byong Jo HYON ,  Yong Su NOH ,  Sang Min PARK ,  Dae Yeon HWANG ,  Hyoung Kyu YANG ,  Poo Reum JANG

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

CPC classification number: H02M3/01 ,  H02M1/0009 ,  H02M1/0012 ,  H02M3/33573

Abstract: A circuit for preventing power imbalance of a resonance-type power converter is proposed. The circuit may include a rectifier converting input alternating current (AC) into direct current (DC) and frequency-controlled first and second resonant converter modules configured to receive an output voltage of the rectifier divided into two stages. The circuit may further include a controller outputting a first frequency command for controlling a frequency of a pulse width modulation (PWM) signal supplied to a switching element of a first switching unit of the first resonant converter module. The circuit may further include a frequency compensator compensating for the first frequency command and then outputting a second frequency command for controlling a frequency of a PWM signal supplied to a switching element of a second switching unit of the second resonant converter module, so as to eliminate power imbalance between the first and second resonant converter modules.