双圈磁钢飞轮电机的设计及优化  

Design and Optimization of A Double-Circle Permanent Magnet Motor Used in Reaction Flywheel System

作　　者：殷明 王森 陶侃凯 聂周 裴堃 刘凯[3] YIN Ming;WANG Sen;TAO Kankai;NIE Zhou;PEI Kun;LIU Kai(Machine Patrol Operation Center of Guangdong Power Grid. Ltd.,Guangzhou 510180;Shanghai Aerospace Control Technology Institute,Shanghai 201109;School of Electrical Engineering, Southeast University,Nanjing 210096)

机构地区：[1]广东电网有限责任公司机巡作业中心,广州510180 [2]上海航天控制技术研究所,上海201109 [3]东南大学电气工程学院,南京210096

出　　处：《飞控与探测》2020年第2期75-80,共6页Flight Control & Detection

摘　　要：反作用飞轮系统是卫星等航天器实现姿态调节的执行机构,目前国内卫星姿态调节用的飞轮电机是常规单层磁钢飞轮电机,根据该系统对飞轮电机的具体性能要求,在常规飞轮电机的基础上提出一种双圈磁钢结构的飞轮电机,以此改善常规飞轮电机气隙磁密波形及反电势波形质量不高、转矩波动和电机损耗大等问题。首先采用有限元软件对双圈磁钢飞轮电机进行结构设计,其次在双圈磁钢飞轮电机尺寸确定的情况下,对电机的磁极对数和极弧系数进行优化,由于双圈磁钢飞轮电机的磁钢产生的磁密在气隙中分布相比常规飞轮电机更加均匀,所以最后将其与常规飞轮电机进行定量对比,对比结果表明,双圈磁钢飞轮电机的气隙磁密波形质量比常规飞轮电机的气隙磁密波形质量更好,其转矩脉动更小,提高了反作用飞轮系统的控制精度和稳定性。同时双圈磁钢飞轮电机的电机损耗更小,增大了飞轮电机的运行效率。Reaction flywheel system is the actuator of attitude adjustment for satellite and other spacecraft.At present,the flywheel motor used for satellite attitude control in China is a conventional single-layer magnetic steel flywheel motor.According to the specific performance requirements of flywheel motor in the system,this paper proposes a double-circle magnetic steel flywheel motor and the electromagnetic design and optimization of the motor is carried out,which improves the air gap magnetic flux waveform,torque ripple and increases the output torque and reduces the losses of motor.Firstly,the finite element software is used to simulate the flywheel motor.Then the number of poles and the arc coefficient of the motor are optimized as the size of the flywheel motor is determined.Because the magnetic density produced by the double magnetic steel flywheel motor is more evenly distributed in the air gap than that of the conventional flywheel motor,it is finally compared with the conventional flywheel motor quantitatively.In the end,the double-circle magnetic steel flywheel motor is compared with the conventional one.The results show that the air gap flux density waveform of the double-coil magnet flywheel motor is improved and the torque ripple is reduced.The control accuracy and stability of the reaction flywheel system are improved.The loss of the double-circle magnet flywheel motor is smaller,which enhances the operation efficiency of the motor.

关 键 词：飞轮系统 无刷直流电机 外转子 无铁心 优化 

分 类 号：TM351[电气工程—电机]