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전기자동차 구동용 영구자석 모터 시스템의 개발 프로세스 및 기술 동향
최윤용(Yunyong Choi),한은실(Eunsil Han),이충성(Chunseong Lee) 한국자기학회 2021 韓國磁氣學會誌 Vol.31 No.3
Beyond the 4th industrial revolution, the beginning of the eco-friendly era has begun. Carbon neutrality with the last means regarding to climate change, has begun. In this reason, the electric motor industry rapidly emerged as the center of the industrial trend toward zero carbon. In particular, the eco-friendly automobile industry is the center of change for the automobile drive system. In other words, the driving core of automobiles is in a state of great transition from the internal combustion engine to the electric motor. In this paper, the development process of the motor drive system, which is the core technology of eco-friendly vehicles, and the design verification case of the motor system using CAE are described. Finally, the future technology development direction for the motor drive system of eco-friendly vehicles are introduced.
퍼스널 모빌리티용 탈희토류 영구자석 동기모터 최적 설계
김기오(Ki-O Kim),임명섭(Myung-Seop Lim),박두하(Du-Ha Park),박지원(Ji-Won Park),최명균(Myeong Gyun Choi),최윤용(Yunyong Choi) 한국자기학회 2023 韓國磁氣學會誌 Vol.33 No.6
This paper presents the optimal design of a 15 kW permanent magnet synchronous motor for personal mobility using non-rare earth permanent magnets (PMs) as an alternative to neodymium PMs. The characteristics of neodymium permanent magnet motors are compared with those when replaced with ferrite permanent magnets, and methods for improvement are suggested. The electromagnetic performance according to the rotor outer diameter, the shape of the PM, and the number of layers of the PM are compared, and the initial design is carried out considering the irreversible reduction characteristics and mechanical stability. Considering that it is for personal mobility, the efficiency of the main operating points for urban driving is considered, and two-step optimization is performed to reduce the number of experimental points. Based on the optimal design results of this paper, the suitability of synchronous motors using rare earth permanent magnets for personal mobility is suggested.