엔코더 위치에 강인한 계통연계 기능을 갖는 권선형유도발전기 제어 기법

Abstract

In order to transmit energy generated through the stator winding of a doubly-fed induction generator (DFIG), we need to synchronize the generated voltage vector with the grid voltage vector. However, the existing synchronization method works only when the encoder is installed at a specific position and equivalent constant is precise. In order th solve this problem, a new synchronization method has been proposed and a way of applying the method to existing doubly-fed induction generator control algorithm has been also proposed. The validity of the proposed methods have been verified using a prototype converter for the control of a 1.5MW-class doubly-fed induction generator.