Performance Comparison of Optimally Designed Induction Motors with Aluminum and Copper Squirrel-Cages

A significant improvement in motor efficiency is expected when substituting aluminum with copper die-cast rotor in squirrel-cage induction motors due to a reduction in the rotor ohmic losses. Other performance criteria, such as starting torque, power factor, and steady-state current, may also change...

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Bibliographic Details
Published inElectric machines and power systems Vol. 28; no. 12; pp. 1195 - 1207
Main Author Faiz, M. B. B. Sharifian, A. Keyhani, A. Proca, J.
Format Journal Article
LanguageEnglish
Published Informa UK Ltd 01.12.2000
Subjects
Optimal Design Squirrel-CAGE Induction Motor Objective Functions
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Summary:A significant improvement in motor efficiency is expected when substituting aluminum with copper die-cast rotor in squirrel-cage induction motors due to a reduction in the rotor ohmic losses. Other performance criteria, such as starting torque, power factor, and steady-state current, may also change, and the motor may need to be redesigned to obtain optimal performance. This paper compares the performance of optimally designed squirrel-cage induction motors with aluminum and copper rotor bars with equivalent specifications. The design is optimized using three objective functions.
ISSN:0731-356X
1521-0502
DOI:10.1080/073135600449062