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An Approach to Realize Higher Power PWM AC Controller
작성자 관리자 작성일 2008-11-28
논문집명 IEEE Applied Power Electronics Conference 발행년도 1993. 03
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An Approach to Realize Higher Power PWM AC Controller.pdf

SPrasad N. Enjeti, Sewan Choi, “An Approach to Realize Higher Power PWM AC Controller”

Abstract : AC controllers are widely used in industry in many applications. Recent research has shown that PWM operation of ac controllers offers high performance characteristics. However, PWM con- trolled ac controllers are plagued with difficulties to commutate inductive,load current from one hi-directional switch to another due to finite switch on/off times. This paper proposes a four step switching strategy for repeated on/off operation of bi-directional switches in an ac controller. The proposed approach permits safe transition of inductive load current at all power factors from one bi-directional switch to another even in the presence of source side stray inductance. Results from an experimental proto-type ac controller coupled to an inductive load are also discussed. R