컨버터 병렬운전을 위한 새로운 제어방법에 대한 연구

In this paper, the control strategy for paralleling operation of multiple converter is investigated. The number of modules in active are detected and the phases of PWM signals applied to each modules are set autonomously by the controller. Even when there is a failure on parallelled-converters, self-detection operations of the number of converters in active also shall be done. And the expandibility of converter modular in parallel can be accomplished easily by adding several parts in the converter power-stage and controller circuitry.