Title :
A High Input Voltage Three-Phase ZVZCS DC-DC Converter with Vin /3 Voltage Stress on Primary Switches
Author :
Song, Ting-Ting ; Chung, Henry S H ; Tapuhi, Saad ; Ioinovici, A.
Author_Institution :
City Univ. of Hong Kong, Kowloon
Abstract :
A high-voltage three-phase ZVZCS DC-DC converter with low voltage stress is presented in this paper. The voltage stress on the primary switches is only one-third of the input voltage. By using the phase shift pulsewidth modulation (PWM) and secondary snubber, four of the six primary switches are operating with zero-voltage switching (ZVS) and two of them are operating with zero-current switching (ZCS), in order to reduce the switching loss. Moreover, the converter has wide soft-switching range. Analysis of the converter´s operation is given. A 2.2 kW, 1000 V/110 V dc-dc converter prototype has been built and tested. Experimental results are favorably compared with theoretical predictions.
Keywords :
DC-DC power convertors; PWM power convertors; switching convertors; zero current switching; zero voltage switching; PWM; phase shift pulsewidth modulation; power 2.2 kW; primary switches; secondary snubber; switching loss; three-phase ZVZCS DC-DC converter; voltage 1000 V; voltage 110 V; voltage stress; zero-current switching; zero-voltage switching; DC-DC power converters; Low voltage; Phase modulation; Pulse width modulation; Snubbers; Space vector pulse width modulation; Stress; Switches; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2007.4342012
