인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This paper proposes an enhanced three-phase Phase-Locked Loop (PLL) algorithm based on Cascaded Delayed Signal Cancellation (CDSC) for accurate per-phase detection under unbalanced grid conditions. PLL is essential for extracting grid frequency and phase in grid-connected power converter applications. However, conventional three-phase PLLs are mainly used for inverter control and have limitations in accurately estimating independent per-phase quantities under voltage unbalance and grid distortion. To address this limitation, an enhanced CDSC-PLL is proposed, in which each phase is independently processed and an average-based compensation method is applied. Through this approach, the effects of the harmonic components in the estimated angular frequency are reduced. The performance of the proposed algorithm was verified under unbalanced grid conditions. The results show that the proposed method achieves improved harmonic suppression and effective per-phase phase estimation compared with a Moving Average Filter (MAF)-based PLL and a conventional CDSC-PLL.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.