Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Conference_Location :
Palm Springs, CA
Print_ISBN :
978-1-4244-4782-4
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2010.5433599
