关键词: 感应电机, 永磁再制造, 宽域效率, 负载特征, 遗传算法

Abstract: In order to solve the problem of low efficiency of existing induction motors in the wide speed range, a new method of permanent magnet remanufacturing to improve the wide speed range was proposed. The power 2. 2 kW Y series induction motor was taken as the research object. Based on the induction motor stator, permanent magnet remanufacturing technology was used to design permanent magnet rotor for induction motor. Taking the comprehensive efficiency of the permanent magnet remanufacturing motor based on load characteristics as the optimization objective, the response relationship between the optimization objective and design parameters was constructed by establishing a wide speed range efficiency calculation model and a response surface proxy model and the optimal solution was found by using genetic algorithm. The results show that the wide speed range efficiency of the optimized permanent magnet remanufacturing motor was significantly improved and a set of research system of induction motor permanent magnet remanufacturing method for
wide speed range efficiency improvement is formed.

Key words: induction motor, permanent magnet remanufacturing, wide speed rang efficiency, load characteristics, genetic algorithm