An Efficiency-oriented Two-stage Structure Employing Partial Power Regulation

Mingxiao Li, Ziwei Ouyang*, Michael A.E. Andersen, Gang Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

An improved two stage structure with partial power regulation concept is proposed in this paper. The partial input power is regulated by a pre-regulator, while the full input power is transferred by a high frequency and high efficiency LCLC resonant converter. It serves as a second stage and operates as a DC transformer (DCX) to boost the input voltage and provide galvanic isolation. The proposed architecture facilitates reduced secondary device ratings of the active clamp flyback (ACF) converter. A 24-32V input, 432V, 432W output isolated dc-dc converter for photovoltaic applications is built to verify the effectiveness of the proposed circuit structure. The peak efficiency of 96% is achieved with 278W/inch3.

Original languageEnglish
Title of host publicationProceedings of IEEE 9th International Power Electronics and Motion Control Conference
PublisherIEEE
Publication date29 Nov 2020
Pages2104-2109
Article number9367921
ISBN (Electronic)9781728153018
DOIs
Publication statusPublished - 29 Nov 2020
Event9th IEEE International Power Electronics and Motion Control Conference - Nanjing, China
Duration: 29 Nov 20202 Dec 2020

Conference

Conference9th IEEE International Power Electronics and Motion Control Conference
CountryChina
CityNanjing
Period29/11/202002/12/2020
Series2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Keywords

  • High frequency
  • High power density
  • LCLC resonant converter
  • Partial power regulation
  • Two stage structure

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