Author： Faiz J. Sharifian M. B. B. Keyhani A. Proca A.
Publisher： Taylor & Francis Ltd
ISSN： 1521-0502
Source： Electric Machines and Power Systems, Vol.28, Iss.12, 2000-12, pp. : 1195-1207
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Abstract
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.
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