A comparative study of a family of zero-current-transition schemes for three-phase inverter applications

Author

Li, Yong ; Lee, Fred C.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1158

Abstract

This paper explores the fundamental properties of a family of zero-current-transition (ZCT) inverters in a systematic and comparative approach. The inverters studied include several schemes for a circuit configuration with six auxiliary switches and one topology that requires only three auxiliary switches. First, a simplified equivalent circuit is presented to unify common traits of ZCT commutations and their design criteria. Mechanisms for achieving zero-voltage turn-on in ZCT inverters are investigated. Then, with the visual aid of state planes, behaviors of individual inverters, including switching turn-on and turn-off conditions, circulating energy, and device/component stresses, are analyzed against the simplified equivalent circuit. Finally, a comparison of major features is conducted. Both simulation and experimental results are provided for verification

Keywords

commutation; equivalent circuits; invertors; switching circuits; auxiliary switches; circulating energy; commutations; component stresses; device stresses; simplified equivalent circuit; switching turn-off; switching turn-on; three-phase inverter; zero-current-transition schemes; zero-voltage turn-on; Circuit simulation; Commutation; Electromagnetic interference; Equivalent circuits; Pulse width modulation inverters; RLC circuits; Stress; Switches; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE

Conference_Location

Anaheim, CA

Print_ISBN

0-7803-6618-2

Type

conf

DOI

10.1109/APEC.2001.912512

Filename

912512