Design considerations and loss analysis of zero-voltage switching boost converter

Author

Valtchev, V.T. ; Van den Bossche, A. ; Melkebeek, J. ; Yudov, D.D.

Author_Institution

Dept. of Electron., Tech. Univ. of Vama, Bulgaria

Volume

148

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

29

Lastpage

33

Abstract

A novel zero-voltage switching (ZVS) boost converter for medium- and high-power applications is proposed. Compared to conventional hard switching boost converters, the switching losses are decreased by a factor of 3 to 4. A design procedure is proposed, based on the minimisation of the total losses in the switch. It is shown that variations of operating frequency, turn-off current and voltage rise time do not affect the control algorithm or the design procedure, even for a wide range of loading conditions and input voltage. A 3 kW prototype using IGBTs is simulated (PSPICE) and developed. The efficiency obtained is more than 90% for load values higher than 20% of full load, and attains 95% for full load. Advantages of the circuit include zero-voltage-zero-current turn-on and zero-voltage turn-off for a wide range of line voltage and load; switching conditions do not depend on the load. The reliable control strategy makes the proposed ZVS boost converter attractive for medium-power applications where IGBTs are used predominantly

Keywords

DC-DC power convertors; SPICE; bipolar transistor switches; circuit simulation; insulated gate bipolar transistors; load (electric); losses; power bipolar transistors; power semiconductor switches; switching circuits; 3 kW; 95 percent; DC/DC power conversion; IGBTs; PSPICE; ZVS; control algorithm; design considerations; loading conditions; loss analysis; medium-power applications; operating frequency; reliable control strategy; turn-off current; voltage rise time; zero-voltage switching; zero-voltage switching boost converter; zero-voltage turn-off; zero-voltage-zero-current turn-on;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20010013

Filename

902337