NDLI: Thermal analysis of solid rotor in PMSM used for EV

Content Provider	IEEE Xplore Digital Library
Author	Zhang Xiaochen Li Weili Cheng Shukang Cao Junci Zhu Chunbo
Copyright Year	2009
Description	Author affiliation: School of Electrical and Automation Engineering, Harbin Institute of Technology, 150001, China (Zhang Xiaochen; Cheng Shukang; Zhu Chunbo) \|\| School of Electrical and Electronic Engineering, Harbin University of Science and Technology, 150040, China (Li Weili; Cao Junci)
Abstract	A solid rotor permanent magnet synchronous motor (PMSM) is developed for the electric propulsion part in electric vehicles (EV). The rotor in this kind of motor is composed of splits solid bodies, interior permanent magnets and starting bars. Wedges and bars are shot circuited by end rings that promote the generation of starting torque jointly. While PMSM used in EV, it may need to start frequently at different load, which would cause eddy losses in rotor and related to thermal demagnetization of permanent magnet directly. In this paper, a prototype of 30kW solid rotor PMSM is proposed, and numerical calculation models for thermal analysis are established. The 2D electromagnetic fields were calculated by using finite element method (FEM) first and motor losses in rotor were determined. From the analysis of fluid analysis of air in airgap, an effective coefficient of heat transfer is proposed to deal with the complex heat exchanges between rotor and stator. Then steady thermal field is analyzed, and influences of motor fan, loads and stray loss on rotor temperature distribution were studied. Some associate test work has been done with results in a good agreement with the analysis data. Some reasonable conclusions were obtained, which can provide some help for the design of this kind of PMSM and its application in EV.
Starting Page	1637
Ending Page	1642
File Size	983275
Page Count	6
File Format	PDF
ISBN	9781424426003
DOI	10.1109/VPPC.2009.5289644
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solids Rotors Magnetic analysis Permanent magnet motors Synchronous motors Bars Thermal loading Heat transfer Propulsion Electric vehicles thermal field EV PMSM solid rotor
Content Type	Text
Resource Type	Article

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