Performance analysis of DAB DC-DC converter under zero voltage switching

Author

Naayagi, R.T. ; Forsyth, A.J. ; Shuttleworth, R.

Author_Institution

Eng. Syst. Dept., Univ. of Greenwich, Chatham, UK

fYear

2011

fDate

3-5 Jan. 2011

Firstpage

56

Lastpage

61

Abstract

This paper investigates the effect of snubber capacitor on the zero voltage switching (ZVS) boundary of the dual active bridge (DAB) DC-DC converter. The analysis is performed to determine the minimum current required during transistor turn-off to achieve successful ZVS and the ZVS boundary operating conditions of the converter are obtained. The operation of the converter during transistor turn-off with snubber capacitor is explained. SABER simulations verify the operation of the converter under ZVS thereby confirming the accuracy of the analysis. Experimental results corresponding to the ZVS boundary of the converter prototype for 6.4kW, 390V/175V, 20 kHz operation are included to support the analysis.

Keywords

DC-DC power convertors; bridge circuits; capacitors; zero voltage switching; DAB DC-DC converter; dual active bridge DC-DC converter; power 6.4 kW; snubber capacitor; voltage 175 V; voltage 390 V; zero voltage switching; Capacitors; Converters; Inductors; Snubbers; Switches; Transistors; Zero voltage switching; DC-DC converter; charging/discharging snubber; dual active bridge; snubber capacitor; turn-off process; zero-voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Energy Systems (ICEES), 2011 1st International Conference on

Conference_Location

Newport Beach, CA

Print_ISBN

978-1-4244-9732-4

Type

conf

DOI

10.1109/ICEES.2011.5725302

Filename

5725302