인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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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.
피인용 0
초록·키워드
In Permanent Magnet assisted Synchronous Reluctance Motors (PMaSynRMs), designing ribs and bridges int the rotor involves a trade-off between structural integrity and magnetic flux leakage. Traditionally, a safety factor of 1.2 is used to prevent mechanical failure, but it fails to quantitatively account for manufacturing uncertainties. To address this, the present study evaluates the structural integrity of a 3-layer fluid-type PMaSynRM rotor using the Conditional Value at Risk (CVaR) technique. To probabilistically evaluate the stress in the rotor, 2D finite element analysis is performed on 10,000 samples generated via Generalized Latin Hypercube Sampling with an independent ±0.1 mm tolerance assigned to the ribs, bridges, and fillets. Under the maximum speed of 10,000 rpm, the CVaR99%, representing the expected value of the top 1% extreme stresses, is calculated as 416.5 MPa. Specifically, although the nominal model was deterministically designed to limit the maximum stress to 350 MPa, the probabilistic distribution demonstrates that the predefined margin successfully accommodates the stress fluctuations induced by manufacturing errors. This result probabilistically verifies that the conventional safety factor of 1.2 is a valid design criterion. By aligning closely with the material's yield stress of 420 MPa, the result ensures rotor’s reliability against the worst-case combinations of manufacturing tolerances without performance loss.
본문·목차
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