Temperature Estimation of IPMSM Using Thermal Equivalent Circuit

Author

Lee, Byeong-Hwa ; Kim, Kyu-Seob ; Jung, Jae-Woo ; Hong, Jung-Pyo ; Kim, Young-Kyoun

Author_Institution

Dept. of Automotive Eng., Hanyang Univ., Seoul, South Korea

Volume

48

Issue

11

fYear

2012

Firstpage

2949

Lastpage

2952

Abstract

This paper deals with the temperature estimation of interior permanent magnet synchronous motor (IPMSM). A thermal equivalent circuit of IPMSM is proposed with considering eddy current loss of PM as well as core losses of rotor. Heat sources, which are core loss of stator/rotor core and eddy current loss of PM, are calculated by numerical method to enhance the accuracy of thermal estimation. The thermal equivalent model is represented by the thermal resistances and thermal capacitances, which are determined by motor configuration. Meanwhile, a temperature test is performed using prototype to determine the heat transfer. Finally, this thermal equivalent model is verified by a temperature test in a 25 kW 12-pole/18-slot IPMSM.

Keywords

eddy current losses; equivalent circuits; machine theory; permanent magnet motors; rotors; stators; synchronous motors; thermal analysis; IPMSM; eddy current loss; heat source; interior permanent magnet synchronous motor; numerical method; power 25 kW; rotor core losses; stator core; temperature estimation; thermal capacitance; thermal equivalent circuit; thermal equivalent model; thermal estimation; thermal resistance; Core loss; Eddy currents; Equivalent circuits; Integrated circuit modeling; Permanent magnet motors; Rotors; Thermal resistance; Core loss; demagnetization; eddy current loss; interior permanent magnet synchronous motor; permanent magnet temperature estimation; thermal equivalent circuit;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2196503

Filename

6332739