公开(公告)号：US20240014743A1

公开(公告)日：2024-01-11

申请号：US17861157

申请日：2022-07-08

Applicant: Delta Electronics, Inc.

Inventor： Satyaki MUKHERJEE ,  Chi ZHANG ,  Tomas SADILEK ,  Misha KUMAR ,  Boyi ZHANG ,  Peter Mantovanelli BARBOSA

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

CPC classification number: H02M3/33592 ,  H02M3/01 ,  H02M1/0058 ,  H02M1/0009 ,  H02M3/33573

Abstract: A novel phase-shift based modulation strategy is disclosed that enables a DC-DC converter to operate with zero voltage-switching (ZVS) across wide voltage and power range. The converter operates at a fixed fundamental frequency, with the output current controlled based on an amount of phase shift of the fundamental component at the output of an inverter portion of the converter. To achieve soft switching a rectifier portion of the converter is controlled to phase shift the fundamental component of the rectifier voltage observed at a rectifier reference terminal. More specifically, by requiring a phase shift of the voltage at the rectifier terminal relative to the output voltage of the inverter, the inverter current is such that ZVS is achieved. A converter and method are provided to implement DC-DC conversion with soft switching.