Radial Force Compensation Method of Single Winding Bearingless Flywheel Motor Application to Flywheel Energy Storage
Yuan Ye1,Sun Yukun2,Huang Yonghong1,Yang kai1
1. College of Electrical and Information Engineering, Jiangsu University Zhenjiang 212013 China; 2. College of Electrical Engineering, Nanjing Institute of Technology Nanjing 211167 China
Abstract：The position of rotor and stator in switched reluctance motor is exchanged to obtain the single winding bearingless flywheel motor(SWBFM), which is more useful for flywheel energy storage. The suspension force and torque are produced by single windings and the rotor could direct drive the flywheel with less mechanical transmission. The accurate mathematical model of Maxwell stress tensor method obtained by finite element analysis and the correction factor is the basis to control motor stable and depends on the selection of integrating path. Considering the relationship between the angle and the radial force coefficient, and the difference of radial force coefficient with each tooth pole, radial force compensation methods of βdirection constraint and without βdirection constraint are present to ensure the SWBFM stable suspension under the condition of winding fault. The results show that the proposed compensation methods are feasible and have high precision.
袁野,孙玉坤,黄永红,杨凯. 用于飞轮储能的单绕组磁悬浮飞轮电机径向力补偿方法[J]. 电工技术学报, 2015, 30(14): 177-183.
Yuan Ye,Sun Yukun,Huang Yonghong,Yang kai. Radial Force Compensation Method of Single Winding Bearingless Flywheel Motor Application to Flywheel Energy Storage. Transactions of China Electrotechnical Society, 2015, 30(14): 177-183.
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2015, Vol. 30 
