Flux Weakening Mechanism of Interior Permanent Magnet Synchronous Machines With Segmented Permanent Magnets

被引：35
作者：
Duan, Shiying [1 ]
Zhou, Libing [1 ]
Wang, Jin [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2014年 / 24卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Field weakening capability; frozen permeability technique; segmented interior permanent magnet synchronous machine (IPMSM); FINITE-ELEMENT-ANALYSIS; ELECTRIC VEHICLES; DESIGN; MOTOR; OPERATION;
D O I：
10.1109/TASC.2013.2280847
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：
The flux weakening mechanism of interior permanent magnet synchronous machines with segmented permanent magnets (PMs) in the rotor is studied in this paper. Air gap flux density with and without segments are analyzed and compared, based on both analytical and finite element methods. Frozen permeability technique is used to separate the PM component flux density in iron bridges at load condition, to find out the influence of demagnetizing current on flux variation. Design parameters are optimized to improve the field weakening capability. A novel explanation is proposed to explain the improvement effect of the flux weakening capability by magnet segmentation.
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页数：5
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