A soft switcher optimized for IGBTs in PWM topologies

Author

Ivensky, Gregory ; Sidi, David ; Ben-yaakov, Sam

Author_Institution

Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Issue

0

fYear

1995

Firstpage

900

Abstract

A novel soft switching scheme optimal for power IGBTs is described and investigated theoretically and experimentally. The proposed soft switcher applies an auxiliary IGBT switch which is operated for a short time interval during the turn off commutation of the main IGBT. The main advantage of the proposed switcher is ZCS of the main and auxiliary IGBTs during both turn on and turn off while all other power devices are also soft switched. The proposed soft switcher can be implemented in various types of PWM topologies. The experimental boost power converter was run at a switching frequency of 100 kHz to power levels of 1 kW. The efficiency was measured to be about 95% with a duty cycle of 0.45 and an output voltage of 300 V

Keywords

DC-DC power convertors; PWM power convertors; bipolar transistor switches; circuit testing; commutation; insulated gate bipolar transistors; network analysis; power bipolar transistors; power semiconductor switches; switching circuits; 1 kW; 100 kHz; 300 V; 95 percent; DC/DC; boost power converter; commutation; power IGBTs; soft switching; switching frequency; turn off; turn on; Insulated gate bipolar transistors; Pulse width modulation; Pulse width modulation converters; Resonance; Switches; Switching converters; Switching frequency; Topology; Voltage; Zero current switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1995. APEC '95. Conference Proceedings 1995., Tenth Annual

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2482-X

Type

conf

DOI

10.1109/APEC.1995.469047

Filename

469047