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
In recent shipboard power systems, variable-frequency drive (VFD) loads are increasingly used not only for propulsion but also for operating various auxiliary devices such as fans, pumps, and compressors. Given that most VFDs employ diode rectifiers, the inclusion of multiple VFD loads leads to significant degradation of voltage and current waveforms in the power system. According to classification society regulations, the voltage total harmonic distortion (THD) must generally remain below 8%, with individual harmonic components not exceeding 5%. However, these limits are often exceeded as the proportion of VFD loads increases. This paper presents a detailed harmonic analysis of shipboard power system under varying VFD load ratios, filter installation conditions, and system inductance levels. In particular this study identifies the critical VFD load ratio beyond which the harmonic distortion exceeds classification limits and proposes the appropriate sizing of passive filters to mitigate this issue. Furthermore, it investigates the nonlinear relationship between system inductance and VFD load ratio, offering predictive insights into THD behavior under different system conditions.
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.
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