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金光洙(Kwangsoo Kim),金起贊(Ki-Chan Kim),李聖九(Sung-Gu Lee),高成哲(Sung-Chul Go),全衍度(Yon-Do Chun),李喆圭(Chul-Kyu Lee),李柱(Ju Lee) 대한전기학회 2008 전기학회논문지 Vol.57 No.9
This paper is concerned with the problems of accurate losses segregation in capacitor-run single phase motor. Segregation of losses in single phase induction motor is more complicated than that in three phase induction motor, because of the backward magnetic field component in the motor. Generally there are two methods for losses segregation of single phase induction motor. The one is relatively complicated method based on parameter estimation of single phase induction motor. By the way, the other one is simplified method based on IEEE Standard 114. All of the methods for the experimental determination of single phase induction motor losses are studied in this paper. Since the IEEE Standard is not possible to be applied for all type of single phase induction motors, we modified that method to apply for losses segregation of capacitor-run single phase induction motor as unifying the method based on parameter estimation.
축방향 자속형 영구자석 BLDC 전동기의 코깅 토크 저감에 관한 연구
曺元榮(Won-Young Jo),李仁宰(In-Jae Lee),曺允鉉(Yun-Hyun Cho),具大鉉(Dae-Hyun Koo),全衍度(Yon-Do Chun) 대한전기학회 2006 전기학회논문지 B Vol.55 No.9
Cogging torque, the primary ripple component in the torque generated by permanent magnet (PM) motors, is due to the slotting on the stator or rotor. This article shows the reduction of cogging torque in a novel axial flux permanent magnet (AFPM) motor through the various design schemes. 3D finite element method is used for the exact magnetic field analysis. The effects of slot shapes and skewing of slot on the cogging torque and the average torque have been investigated in detail.