Thermal analysis of multibarrier interior PM synchronous Machine using lumped parameter model

Author

El-Refaie, Ayman M. ; Harris, Nathan C. ; Jahns, Thomas M. ; Rahman, Khwaja M.

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA

Volume

19

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

303

Lastpage

309

Abstract

This paper presents a lumped-parameter thermal model for a multi-barrier interior PM synchronous machine. The model consists of a network of 12 thermal resistances that make it possible to estimate temperatures at 9 critical points inside the machine including the stator end windings, rotor magnets, and the bearings. The details of the model are presented and two machines are analyzed, including a 6 kW 12-pole automotive starter/alternator and a 0.5 kW 4-pole electric water pump machine. The lumped-parameter model results for both machines demonstrate good agreement with results obtained using detailed thermal finite element analysis.

Keywords

finite element analysis; permanent magnet machines; rotors; stators; synchronous machines; thermal analysis; 0.5 kW; 6 kW; automotive starter/alternator; electric water pump machine; lumped parameter model; multibarrier interior PM synchronous machine; permanent magnet machines; rotor magnets; stator end windings; thermal analysis; thermal finite element analysis; Alternators; Automotive engineering; Machine windings; Magnetic analysis; Magnets; Rotors; Stator windings; Synchronous machines; Temperature; Thermal resistance; AC machines; brushless machines; equivalent circuits; losses; optimization methods; permanent magnet machines; synchronous machines; thermal factors;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2004.827011

Filename

1300694