Abstract
Permanent magnet synchronous motors are being manufactured and used increasingly in low to medium power range applications due to their inherent advantages. There is a great deal of opportunity to enhance their merits by design optimization, thus reduce production costs and improve performance of the motors. In this paper a design optimization is performed on interior type permanent magnet synchronous motors to achieve high torque development capability with low permanent magnet consumption. A multi-objective optimization is performed in search for optimum magnet dimensions and location. The design optimization results in a motor structure superior to original motor specifications. Finite element method is used to evaluate the accuracy of the results.
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