하이브리드 능동전력필터의 계통 연계 위상 추종 성능 개선을 위한 위상 동기화 기법의 선정

초록

In this paper, to improve power system connection phase tracking performance of the hybrid active power filter, compared and analyzed the robust phase synchronization method even in power sources including disturbances such as frequency and phase angle variance. Among the SOGI-based methods used to obtain a stable input voltage, the DSOGI-PLL method that tracks the phase angle of the input voltage and the DSOGI-FLL method that tracks the frequency of the system are applied to the hybrid active power filter to compare and analyzed. As a result, the phase synchronization characteristics of DSOGI-FLL method is more robust than the DSOGI-PLL method, and the current compensation characteristics is also more accurate and faster. Therefore, it is judged that the DSOGI-FLL method needs to be selected to improve the power system phase tracking performance of the hybrid active power filter.

키워드