Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.912512
