| The optimization design of a late-model machine-surface permanent-magnet synchronous motor has been accomplishmented . Magnetic Finite element method in place of magnetic circuit method can make the machine parameter more precise. Genetic algorithm combined with complex method was used to get global optimum solutions. The program result With the portable MATLAB computer language indicated that this kind of machine have more high performance than asynchronous motor and the magnet use level decreased clearly on the condition of meeting the performance specification after optimization, that is to say , high cost performance can be got.
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