Influence of Load Characteristics on Three-Phase Short Circuit and Demagnetization of Surface-Mounted PM Synchronous Motor

被引：0
|
作者：
Wu, Lijian [1 ]
Du, Yidong [1 ]
Fang, Youtong [1 ]
机构：
[1] Zhejiang Univ, Coll Elect Engn, Hangzhou, Peoples R China
来源：
2019 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE (IEMDC) | 2019年
基金：
中国国家自然科学基金;
关键词：
demagnetization; inertia; load characteristics; load torque; short circuit; MACHINES;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Irreversible demagnetization risk is one of the main drawbacks of permanent magnet synchronous motor (PMSM). Short circuit (SC) current is a critical reason that may cause demagnetization. In the literature, SC current w as often calculated under fixed rotor speed. However, due to the disturbance of current and electromagnetic torque under SC, the speed usually changes according to different load characteristics. Because SC current and torque heavily depend on the speed, this paper investigates the influence of load characteristics on the three-phase SC and demagnetization of a 12-slot/10-pole surface-mounted PMSM. Moreover, since the d-axis SC current is detrimental to demagnetization, the influence of load torque and inertia on the d-axis transient peak current under different loads is discussed. Furthermore, some guidelines are given for the demagnetization check when designing a surface-mounted PMSM.
引用
收藏
页码：758 / 765
页数：8
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