The three-level ZVS-PWM DC-to-DC converter

Author

Pinheiro, José Renes ; Barbi, Ivo

Author_Institution

Federal Univ. of Santa Maria, Brazil

Volume

8

Issue

4

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

486

Lastpage

492

Abstract

A novel high-frequency DC-to-DC power converter for high voltage and high power is introduced which features zero voltage switching (ZVS), operation at constant frequency, regulation by pulse width modulation (PWM), and low RMS current stress upon power switches. Its greatest attribute, in comparison with the full-bridge (FB-ZVS-PWM) converter, is that the voltage across the switches is half of the input voltage, This property is achieved due to the use of a three-level leg in place of the conventional two-switch leg. Operation, analysis, design procedure and example, and simulation are presented. A prototype operating at 100 kHz, rated at 600 V input voltage, and 1.5 kW output power and 25 A output current has been fabricated and successfully tested in the laboratory. The measured efficiency at full load was 93%

Keywords

insulated gate field effect transistors; power convertors; power transistors; pulse width modulation; switching circuits; 1.5 kW; 100 kHz; 25 A; 600 V; 93 percent; DC-to-DC power converter; HF; MOSFET; PWM; ZVS; analysis; design; operation; power switches; pulse width modulation; simulation; three-level; zero voltage switching; Analytical models; DC-DC power converters; Frequency conversion; Leg; Pulse width modulation; Pulse width modulation converters; Stress; Switches; Switching converters; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.261019

Filename

261019