http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
회전자 자속장벽 설계에 의한 영구자석 매입형 BLDC 전동기 코깅 토오크 저감 연구
尹勤榮(Keun-Young Yun),梁炳烈(Byoung-Yull Yang),權炳一(Byung-Il Kwon) 대한전기학회 2006 전기학회논문지 B Vol.55 No.10
For high efficiency and easy speed control of brushless DC (BLDC) motor, the demand of BLDC motor is increasing. Especially demand of interior permanent magnet (IPM) BLDC with high efficiency and high power in electric motion vehicle is increasing. However, IPM BLDC basically has a high cogging torque that results from the interaction of permanent magnet magnetomotive force (MMF) harmonics and air-gap permeance harmonics due to slotting. This cogging torque generates vibration and acoustic noises during the driving of motor. Thus reduction of the cogging torque has to be considered in IPM BLDC motor design by analytical methods. This paper proposes the cogging torque reduction method for IPM BLDC motor. For reduction of cogging torque of IPM BLDC motor, this paper describes new technique of the flux barriers design. The proposed method uses sinusoidal form of flux density to reduce the cogging torque. To make the sinusoidal air-gap flux density, flux barriers are applied in the rotor and flux barriers that installed in the rotor produce the sinusoidal form of flux density. Changing the number of flux barrier, the cogging torque is analyzed by finite element method. Also characteristics of designed model by the proposed method are analyzed by finite element method.
코깅 토오크 저감을 위한 Spoke형 BLDC 전동기의 회전자 극 형상설계에 관한 연구
黃奎尹(Kyu Yun Hwang),李相奉(Sang Bong Rhee),梁炳烈(Byoung Yull Yang),權炳一(Byung Il Kwon) 대한전기학회 2007 전기학회논문지 Vol.56 No.5
In this paper, design of spoke type BLDC motor which have a characteristics of concentrating fluxes and relatively high reluctance torque among IPM BLDC motors has been researched. To reduce cogging torque and torque ripple, rotor pole shape of optimal design is proposed. To clearly see the effects due to the changed rotor pole shape, magnetic circuit model, 2D FEM and design of experiments (DOE) are used. Then considering these results proper rotor pole shape which have an good effect on air gap flux density and cogging torque, back-emf is designed. Moreover, the validity of proposed model in this paper is also verified by comparison between gained experiment and analysis data.