Design Of The High Efficiency Ipmsm Considering The Operating Point With Different Characteristic
2019 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC)(2019)
摘要
This paper suggests a high efficiency design for an outer rotor type permanent magnet synchronous motor (PMSM). The key is to adopt a V-shaped interior permanent magnet synchronous motor (IPMSM) considering two operating points, where their characteristics are different. To derive directions in the motor design process, an outer rotor type surface permanent magnet synchronous motor (SPMSM) is analyzed. First, the loss is investigated, and the limitation of the SPMSM at the low speed operating point is presented. Then the influences of the circuit parameters on each efficiency are examined. From the analysis result, an outer rotor design having the permanent magnets arranged in V-shape is proposed in this paper. When the proposed shape is applied to the outer rotor type, the leakage bypass can be removed, and this can lead to the reduced leakage flux and increased linkage flux. By using the proposed rotor shape and changing core materials, the high efficiency of V-shaped IPMSM considering the different operating point is achieved.
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关键词
Efficiency, operating point, outer rotor type permanent magnet synchronous motor
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