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전기자동차 견인용 전동기의 극 수 슬롯 수 조합에 따른 전기적 특성 및 진동 특성 분석
박권일(Kwon-Il Park),차경수(Kyoung-Soo Cha),윤명환(Myung-Hwan Yoon),홍정표(Jung-Pyo Hong) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
The greenhouse effect is getting worse in these days. To reduce this environmental problem, emission regulation in the automotive industries became strict. Accordingly, the automotive makers stared to develop the environmental friendly vehicles such as the hybrid electric vehicle(HEV) and the electric vehicle(EV). EV is an excellent alternative for conventional combustion engine vehicle. As high torque and wide operation range are essential for EV traction motor. Recently, it is necessary to design an electric motor having excellent vibration characteristics as well as electrical characteristics in accordance with the desire of the consumer who demands a comfortable riding condition. This paper deals with electrical and vibration characteristic of a traction motor for EV depending on pole-slot combination. First, four motors having the same output and different number of slots were selected. Second, the electrical characteristics such as average torque and torque ripple induced voltage of each motor were compared using finite element analysis. Third, the vibration order of the four models is calculated numerically and the vibration characteristics of each motor are compared. Finally number of pole slot combinations suitable for traction motor using the results of electrical and vibration characteristics.
돌극성 기반의 센서리스 제어가 가능한 EV 구동용 집중권 IPMSM의 극 수-슬롯 수 조합에 대한 연구
임명섭(Myung-Seop Lim),채승희(Seung-Hee Chai),홍정표(Jung-Pyo Hong) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This paper presents the decision process of pole-slot number combination for a saliency-based sensorless controlled interior permanent magnet synchronous motor(IPMSM) with concentrated winding for EV traction. To figure out the machine characteristics of noise and vibration, the equation about the force order(noise and vibration order) and the simulation results of the radial force are shown. Furthermore, it is suggested that calculating procedure for the changing pattern of d, q-axis inductance profiles varied with rotor position converted from the 3-phase inductances including harmonics to evaluate sensorless drive feasibility. Lastly, 115Nm-14kW 16-pole/24slot sensorless-oriented IPMSM model which is designed based on the decision process is proposed. The validity of the sensorless controlled prototype and the decision process are verified showing the d, q-axis inductance profiles of the machine under the maximum load condition.
전기 자동차용 견인 전동기 설계 및 극수 변화에 따른 특성 분석
이동희(Dng-hee Lee),박민로(Min-Ro Park),차경수(Kyung-Soo Cha),홍정표(Jung-Pyo Hong) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
In this paper, traction motor for Electric Vehicle(EV) is designed according to system requirements, and high power density motor is designed and compared in the same system. The design specifications of the standard motor are Interior Permanent magnet Synchronous Motor(IPMSM) of 8pole-48slot of 100kW class, 280Nm for maximum torque and 12,000rpm for maximum speed. Design of the motor was aimed at maximizing the torque density using response Surface Methodology (RSM). The specifications of the high power density motors to be compared were determined after increasing the reduction gear ratio in the same system specification. Based on the assumption that the carrier frequency of the inverter is the same, the number of poles is determined according to the maximum speed of the motor and the 6pole-36slot model is designed through the same process. The characteristics of the motor such as power density and efficiency were compared according to the design results of the two motors.