DocumentCode :
3612604
Title :
High step-up isolated resonant converter with voltage quadrupler rectifier and dual-phase-shift control
Author :
Hongfei Wu ; Tian Xia ; Xiaohai Zhan ; Yan Xing
Author_Institution :
Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Volume :
8
Issue :
12
fYear :
2015
Firstpage :
2462
Lastpage :
2470
Abstract :
An isolated resonant converter with voltage-quadrupler rectifier (VQR) and dual-phase-shift (DPS) control strategy is proposed for high step-up and wide voltage range applications. The VQR is composed of a resonant-type voltage doubler and a conventional voltage doubler. The output voltage is improved and the voltage stresses of the secondary-side devices are reduced significantly. Hence, low voltage-rated switches and diodes with better switching and conduction performances can be applied to improve the efficiency. The DPS modulation strategy is adopted to implement the boost and buck modes operation, and to achieve wide voltage gain range. With the DPS control strategy, zero-voltage switching performance is achieved for both the primary and secondary sides power devices, and zero-current switching is achieved for all of the diodes within the entire voltage and load ranges. The operational principles and characteristics of the proposed converter are presented in detail. The analysis and performance have been fully validated experimentally on a 400 V/400 W output hardware prototype.
Keywords :
PWM power convertors; resonant power convertors; switching convertors; voltage control; zero current switching; zero voltage switching; DPS control strategy; DPS modulation strategy; VQR; boost mode operation; buck mode operation; conduction performance; dual phase shift control; low voltage rated diode; low voltage rated switch; primary side power device; resonant type voltage doubler; secondary side power device; step-up isolated resonant converter; switching performance; voltage quadrupler rectifier; voltage stresses; zero current switching; zero voltage switching performance;
fLanguage :
English
Journal_Title :
Power Electronics, IET
Publisher :
iet
ISSN :
1755-4535
Type :
jour
DOI :
10.1049/iet-pel.2014.0665
Filename :
7364335
Link To Document :
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