永磁超环面电机结构参数对齿槽转矩的影响分析  

Analyzing Influence of Structural Parameters of Permanent Magnet Toroidal Motoron Cogging Torque

作　　者：刘欣 王洪达 LIU Xin;WANG Hongda(Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology,College of Mechanical Engineering,Tianjin Polytechnical University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津市现代机电装备技术重点实验室,天津300387

出　　处：《机械科学与技术》2021年第4期500-507,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51875408);国家留学基金(CSC No.201808120031)。

摘　　要：为了分析永磁超环面电机结构参数对齿槽转矩的影响,在分析该电机齿槽转矩产生机理的基础上,针对该电机空间螺旋变截面的结构特点,将齿槽转矩的产生分为自转和公转两个分量进行分析;运用磁共能法推导了该电机齿槽转矩与输出转矩的数学表达式,并采用有限元仿真验证了数学模型的有效可行性;分析了该电机重要结构参数对齿槽转矩削弱的同时对输出转矩幅值的影响规律。结果表明,内定子槽开口系数、行星轮齿的极弧系数和气隙值的合理选择,能够在削弱齿槽转矩波动的同时提高输出转矩的幅值,有效地提高永磁超环面电机的输出性能。In order to reduce the cogging torque by optimizing its structural parameters,its cogging torque generation mechanism is discussed.According to the structural characteristics of the variable cross-sectionmotor,the cogging torquegeneration is divided into two directions:rotation and revolution.Mathematical models of cogging torque and output torque of the motor are established with the magnetic common energy method,and the finite element simulation is carried out to verify their validity and feasibility.Based on the mathematical models,the influence of structural parameters of the motor on the cogging torque reduction and the output torque amplitude is analyzed.The results show that the reasonable selection of the slot opening coefficient,polar arc coefficient and air gap value of the inner stator slot of the motor can reduce the slot torque fluctuation and increase the output torque amplitude,and effectively improve the output performance of the permanent magnet toroidal motor.

关 键 词：超环面电机 螺旋变截面 齿槽转矩 磁共能法 

分 类 号：TM351[电气工程—电机]