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Air-Barrier Width Prediction of Interior Permanent Magnet Motor for Electric Vehicle Considering Fatigue Failure by Centrifugal Force
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 Title & Authors
Air-Barrier Width Prediction of Interior Permanent Magnet Motor for Electric Vehicle Considering Fatigue Failure by Centrifugal Force
Kim, Sung-Jin; Jung, Sang-Yong; Kim, Yong-Jae;
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Recently, the interior permanent magnet (IPM) motors for electric vehicle (EV) traction motor are being extensively researched because of its high energy density and high efficiency. The traction motor for EV requires high power and high efficiency at the wide driving region. Therefore, it is essential to fully consider the characteristics of the motor from low speed to high-speed driving regions. Especially, when the motor is driven at high speed, a significant centrifugal force is applied to the rotor. Thus, the rotor must be stably structured and be fully endured at the critical speed. In this paper, aims to examine the characteristics of the IPM motor by adjusting the width of air-barrier according to the permanent magnet position which is critical in designing an IPM motor for EV traction motors and to conduct a centrifugal force analysis for grasping mechanical safety.
Interior permanent magnet motor;EV traction motor;Air-barrier;Cogging torque;Torque ripple;Electromagnetic field analysis;Centrifugal force analysis;2-D numerical analysis;
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주행 사이클을 고려한 IPMSM의 효율 및 출력 밀도 개선으로 경량 전기 자동차의 주행거리 연장,김동민;정영훈;임명섭;심재한;홍정표;

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