Open AccessAir-Barrier Width Prediction of Interior Permanent Magnet Motor for Electric Vehicle Considering Fatigue Failure by Centrifugal Force
Author(s) -
Sungjin Kim,
Sang-Yong Jung,
Yong-Jae Kim
Publication year - 2015
Publication title -
journal of electrical engineering and technology/journal of electrical engineering and technology
Language(s) - English
Resource type - Journals
eISSN - 2093-7423
pISSN - 1975-0102
DOI - 10.5370/jeet.2015.10.3.952
Subject(s) - traction (geology) , automotive engineering , traction motor , rotor (electric) , magnet , electric vehicle , centrifugal force , centrifugal fan , electric motor , tractive force , brushed dc electric motor , synchronous motor , ac motor , engineering , mechanical engineering , power (physics) , electrical engineering , physics , rotational speed , quantum mechanics , inlet
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.