Analysis of indirect temperature-rise tests of induction machines using time stepping finite element method

Author

Ho, S.L. ; Fu, W.N.

Author_Institution

Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China

Volume

16

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

55

Lastpage

60

Abstract

To be able to test the temperature-rise of induction motors with indirect loading is very useful for the motor industry. In this paper different indirect loading schemes including two-frequency methods, phantom loading methods and inverter driven methods, are surveyed. Their merits and demerits are highlighted. A universal method for analyzing all these indirect temperature-rise methods is presented. The analysis is based on the time stepping finite element model of skewed rotor bar induction machines and the solution can include the effects of saturation, eddy-current and the high order harmonic fields directly. The computed losses can also include the stray losses due to the high-order harmonic fields. An 11 kW induction motor, when operating with normal full-load and on phantom loading, has been used to verify the computed results

Keywords

eddy currents; finite element analysis; harmonic analysis; induction motors; losses; rotors; 11 kW; computed losses; eddy-current; high order harmonic fields; indirect loading; indirect temperature-rise tests; induction motors; inverter driven methods; normal full-load operation; phantom loading methods; saturation; skewed rotor bar induction machines; stray losses; time stepping finite element method; two-frequency methods; Coupling circuits; Finite element methods; Imaging phantoms; Induction machines; Induction motors; Inverters; Magnetic fields; Testing; Thermal loading; Voltage;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.911404

Filename

911404