A Novel Bearingless Switched Reluctance Motor With a Biased Permanent Magnet

被引：57
作者：
Wang, Huijun [1 ]
Liu, Jianfeng [1 ]
Bao, Junfang [1 ]
Xue, Bingkun [1 ]
机构：
[1] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100191, Peoples R China
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2014年 / 61卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Bearingless; decoupling; permanent magnet (PM); switched reluctance motor (SRM); DESIGN; REDUCTION; MACHINES; TORQUE; ROTOR; FORCE; SRM;
D O I：
10.1109/TIE.2014.2317144
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In order to solve the coupling problem between torque and suspending force control in the conventional bearingless switched reluctance motor (SRM), this paper presents a novel bearingless SRM with a biased permanent magnet (PM). Different from the conventional bearingless SRM, the proposed bearingless SRM consists of two motors, in which each motor has two radial control degrees of freedom. In order to realize decoupling control, torque flux is completely independent from radial force flux. When the rotor center is eccentric, suspending force is generated by the control flux from the suspending force pole and the biased flux from the PM. Therefore, in order to explain the advantages of the proposed structure, conventional structures are also compared. Furthermore, the basic design method for the proposed structure and the mathematical model for the suspending force are described. The decoupling and self-starting characteristics are deeply analyzed. The validity of the proposed structure has been verified using finite-element analysis and some experimental results.
引用
收藏
页码：6947 / 6955
页数：9
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