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EPS 안전성 향상을 위한 모터 권선 이중화 설계 연구
손병욱(Byoung-ook Son),김영성(Young-sung Kim) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Recently EPS system is being developed not only in cost reduction design, but also in improving the steering stability by preventing the steering force from being lost even if some electric driving parts of the EPS system fail. In this paper, we study the control circuit for driving EPS motor and ECU duplication, and the driving characteristics for each operation, and compare the design structure and driving characteristics of the motor winding redundancy according to the number of pole slots.
설계변수 공차를 고려한 브러시리스 모터 출력밀도 최적설계
손병욱(Byoung-Ook Son),이주(Ju Lee) 대한전기학회 2010 전기학회논문지 Vol.59 No.9
This paper presents the optimum design of the brushless motor to maximize the output power per weight considering the design parameter tolerance. The optimization is proceeded by commercial software that is adopted the scatter-search algorithm and the characteristic analysis is conducted by FEM. The stochastic optimum design results are compared with those of the deterministic optimization method. We can verify that the results of the stochastic optimization is superior than that of deterministic optimization.
손병욱(Byoung-Ook Son),이주(Ju Lee) 한국조명·전기설비학회 2010 조명·전기설비학회논문지 Vol.24 No.12
The brushless motor is getting widely applied to the automotive component with the advantage of the high efficiency, high reliability and etc.. Most of the motor applications require the low vibration and acoustic noise. The cogging torque is the one of the main cause of the noise and vibration. The step-skewed rotor is used to reduce the cogging torque. We analyze the characteristics of the step-skewed rotor and non skewed rotor with the same stator by using 2-dimensional FEM. And then we analyze the characteristics variation according to the rotor eccentricity. The prototype is made and tested. As the results, the step-skewed rotor structure reduce the cogging torque and local radial force but it is more sensitive to rotor eccentricity.
자기 포화와 누설자속이 고려된 자기등가회로법을 이용한 클로우 폴 스테핑 모터의 요크 형상 설계
이형우(Hyung-Woo Lee),조수연(Su-Yeon Cho),배재남(Jae-Nam Bae),손병욱(Byoung-Ook Son),박경진(Kyoung-Jin Park),이주(Ju Lee) 대한전기학회 2009 전기학회논문지 Vol.58 No.10
This paper presents a shape design process of Claw-Poles Stepping Motor(CPSM) using Modified Magnetic Equivalent Circuit Method(MMEC). Because this motor is adopted on low power devices, the motor size is a very small type. But it have a very strong permanent magnet. So magnetic saturation effect happens on yoke teeth of CPSM. Also this magnetic saturation effect causes more leakage flux component between yoke tooth have another pole. In this motor type, it is essential to design a shape of yoke teeth for avoiding the magnetic saturation effect and the leakage flux. In this paper, MMEC including the magnetic saturation effect and the leakage flux component was used for design process. Comparing with data calculated by using the MMEC and results analyzed by 3-D FEM, it could be stated that the design process with MMEC was reasonable. Finally, the model has the optimized shape of yoke teeth was compared with a conventional model for no-load Back EMF and torque at steady-state operation.
PHEV용 IPMSM의 권선에 따른 고조파 특성에 관한 연구
장익상(Ik-Sang Jang),이기덕(Ki-Doek Kim),김미정(Mi-Jung Kim),손병욱(Byoung-Ook Son),방기창(Ki-Chang Bang),이주(Ju Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Interior permanent magnet synchronous motors(IPMSMs) produce not only the magnetic torque, but also the reluctance torque, which is due to the difference between the d-axis and q-axis inductance, by geometrical rotor structure. Therefore, using flux-weakening control, IPMSMs can be driven at higher speed than surface mount permanent magnet synchronous motors(SPMSMs). As Traction Motors Require wide operation range and high torque density, IPMSMs are suitable for traction applications. In this paper, efficiency and characteristics are compared with concentric and distribute winding.