Title :
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
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;
Conference_Titel :
Electrical Energy Systems (ICEES), 2011 1st International Conference on
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4244-9732-4
DOI :
10.1109/ICEES.2011.5725302
