Title :
Analysis and design consideration of a current-fed ZVZCS phase-shifted full-bridge converter
Author :
Zhong Chen ; Mengnan Li ; Yang Wang
Author_Institution :
Jiangsu Key Lab. of New Energy Generation & Power Conversion, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A new current-fed rectifier based phase-shifted full-bridge (PSFB) converter is proposed in this paper to be suitable for the electrical vehicle application, where the load range is wide and high output voltage is required. The converter can achieve effectively zero-voltage switching (ZVS) for the leading arm and zero-voltage zero-current switching (ZVZCS) for the lagging arm in the whole load range. Compared with the conventional PSFB converter, the presented converter can eliminate the voltage spikes and reverse recovery losses across the output-diodes. It has many remarkable advantages such as simple auxiliary circuit, no duty cycle loss and no energy snubber circuit at secondary side. The operational principle and analysis of the proposed converter are presented and optimum design considerations for some key parameters are also given. To validate the feasibility of the presented topology, a 1kW/300V, 100kHz prototype is implemented and tested.
Keywords :
power convertors; rectifiers; zero current switching; zero voltage switching; PSFB converter; auxiliary circuit; current-fed ZVZCS phase-shifted full-bridge converter; current-fed rectifier based phase-shifted full-bridge converter; design consideration; electrical vehicle application; frequency 100 kHz; power 1 kW; reverse recovery losses; voltage 300 V; voltage spikes; zero-voltage switching; zero-voltage zero-current switching; Capacitors; Clamps; Inductance; Inductors; Rectifiers; Topology; Zero voltage switching; auxiliary circuit; current-fed rectifier; full-bridge converter; zero-voltage zero-current switching (ZVZCS);
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7037989