Title :
ZCS PWM bidirectional converter with one auxiliary switch
Author :
Mousavi, Ahmad ; Pahlevaninezhad, Majid ; Das, Pritam ; Jain, Praveen
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, ON, Canada
Abstract :
Dc-dc bidirectional converters transfer energy between two different dc sources. Soft switching in both directions of operation has been difficult in non-isolated bidirectional converters. To achieve soft switching in the main switches in such converters, usually two independent auxiliary circuits with multiple auxiliary switches are used. A ZCS PWM bidirectional converter is proposed in this paper. In the proposed bidirectional converter a novel yet simple auxiliary circuit with only one auxiliary switch has been applied to provide soft switching at both buck and boost modes of operation. The soft switching range of the proposed converter is independent of the duty cycle and operates with a simple control circuit. In this paper, description and operating principles of the proposed converter are discussed and experimental results obtained from a 500W, 100V-400V prototype are presented to validate the feasibility of the converter.
Keywords :
DC-DC power convertors; PWM power convertors; switching convertors; zero current switching; DC sources; DC-DC bidirectional converters; ZCS PWM bidirectional converter; auxiliary switches; control circuit; independent auxiliary circuits; nonisolated bidirectional converters; power 500 W; voltage 100 V to 400 V; zero-current switching; Capacitors; Inductors; Load flow; Switches; Zero current switching; Zero voltage switching; Bidirectional dc-dc converter; efficiency measurement; topology combination; zero-current switching (ZCS); zero-voltage switching (ZVS);
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2011 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4577-0542-7
DOI :
10.1109/ECCE.2011.6063909
