Input-series connnected high frequency DC-DC converters with one transformer

Author

Sha, Deshang ; Guo, Zhiqiang ; Liao, Xiaozhong

Author_Institution

Sch. of Autom., Beijing Inst. of Technol., Beijing, China

fYear

2010

fDate

21-25 Feb. 2010

Firstpage

662

Lastpage

665

Abstract

Input -series connected DC/DC converters based on one transformer is proposed for high voltage input and high power applications. Phase-shifted full-bridge (PS-FB) control strategy with common duty cycle control is adopted for each converter. Operation principles of the proposed converter are analyzed. Although primary currents vary for magnetic coupling and turns mismatch, combined peak current control is implemented to limit current sharp increase due to magnetic saturation. The effectiveness of the proposed topology and its control strategy are verified by simulation and experimental results of a 20kw-50kHz prototype.

Keywords

DC-DC power convertors; bridge circuits; power transformers; duty cycle control; high frequency DC-DC converters; high power applications; high voltage input; input-series connected DC-DC converters; magnetic coupling; magnetic saturation; peak current control; phase shifted full bridge control; power transformer; Capacitors; Circuit faults; DC-DC power converters; Frequency conversion; Insulated gate bipolar transistors; MOSFETs; Power transformer insulation; Switches; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE

Conference_Location

Palm Springs, CA

ISSN

1048-2334

Print_ISBN

978-1-4244-4782-4

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2010.5433599

Filename

5433599