Design considerations for a 50-kW soft-transition inverter with zero-current and near-zero-voltage switching

Author

Li, Yong ; Lee, Fred C.

Author_Institution

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

Volume

2

fYear

2001

fDate

2001

Firstpage

931

Abstract

In order to provide guidelines for a proposed soft-transition scheme that realizes zero-current and near-zero-voltage switching in high-power applications, this paper presents design considerations via a study example of a 50 kW three-phase prototype inverter for motor drives. Key aspects investigated are determination of the resonant tank parameters, design of the resonant inductor, and selection of the resonant capacitor. A simple device tester with zero-current-switching capability is proposed to select eligible auxiliary switches. Power stage layout and trade-off issues are addressed. The 50 kW prototype has been completely implemented and tested to the full power level, verifying the design methods

Keywords

AC motor drives; capacitors; inductors; invertors; resonant power convertors; switching circuits; 50 kW; auxiliary switches; device tester; high-power applications; motor drives; near-zero-voltage switching; power stage layout; power stage trade-off; resonant capacitor; resonant inductor; resonant tank parameters; soft-transition inverter; three-phase prototype inverter; zero-current switching; zero-current-switching capability; Capacitors; Guidelines; Inductors; Inverters; Motor drives; Prototypes; Resonance; Switches; Testing; Zero current switching;

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.2001.912479

Filename

912479