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Ziyan Ren(렌지얀),Dianhai Zhang(장전해),Chanhyuk Park(박찬혁),Chang Seop Koh(고창섭) 대한전기학회 2013 전기학회논문지 Vol.62 No.1
In this paper, for constrained optimization problem, one multi-objective optimization algorithm that ensures both performance robustness and constraint feasibility is proposed when uncertainties are involved in design variables. In the proposed algorithm, the gradient index of objective function assisted by design sensitivity with the help of finite element method is applied to evaluate robustness; the reliability calculated by the sensitivity-assisted Monte Carlo simulation method is used to assess the feasibility of constraint function. As a demonstration, the performance and numerical efficiency of the proposed method is investigated through application to the optimal design of TEAM problem 22--a superconducting magnetic energy storage system.
장전해(Dianhai Zhang),렌지얀(Ziyan Ren),고창섭(Chang Seop Koh) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10
The rotor structure selection is a critical issue in the design of the interior permanent magnet synchronous machine (IPMSM) because of its strong influence on the motor performance. The rotor structure with segmented permanent magnet and iron-bridge between the PM is useful for very wide constant power speed range. So, in this paper, the torque capability and flux weakening capability of different rotor structures are compared in segmented interior permanent magnet synchronous machine (SIPMSM). In this study, the structures are analyzed under the same stator configuration and air gap length.