关键词: 永磁同步电动机, 逆变电源, 时步有限元, 定子铁耗

Abstract:

To study the influence of different power supply on the iron loss of permanent magnet synchronous motor, the stator core was divided into several typical areas and the stator total loss was obtained. The accuracy of the algorithm was verified by comparing the calculated results. The results showed that the total loss of the tooth yoke was the highest, accounting for more than half; the second was the tooth middle and the tooth tail; the total loss of the tooth top was the least under sinusoidal power supply. In variable frequency power supply ,the stator iron loss increased with the decrease of the amplitude modulation ratio. However, the stator iron loss increased with the decrease of the frequency modulation ratio.

Key words: permanent magnet synchronous motor (PMSM), inverter power supply, time-stepping finite element, stator iron loss