Aiming at high-power low-speed direct-drive motors,a comparative study of their electromagnetic char-acteristics is carried out to compare the effects of different stator silicon steel materials on the electromagnetic char-acteristics and efficiency of such motors under no-load and load conditions,taking the design of a 36-slot,30-pole pole-slot motor with similar number of high-power low-speed direct-drive motors as an example.Finite element anal-ysis shows that the use of oriented silicon steel stator material of high-power low-speed direct-drive permanent mag-net motor compared with the conventional silicon steel stator material of this kind of motor,the electromagnetic char-acteristics of the better,no-load oriented silicon steel material will weaken the saturation phenomenon of the tooth part,the load improves the output torque of the motor,reduces the rate of electromotive force waveform aberration;reduces the magnitude of the eddy current loss of the permanent magnets,the two part of the efficiency of the motor is not much difference,as the engineering of this kind of motor to provide reference for the actual production.The ef-ficiency difference between the two motors is not big,which provides reference for the actual production of this kind of motors in engineering.
关键词
大功率低速直驱永磁电机/取向硅钢/有限元分析
Key words
high-power low-speed direct-drive permanent magnet motors/oriented silicon steel/finite element a-nalysis
维普
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