双并列转子永磁电机非对称负载运行特性  

Asymmetric load operation characteristics of dual-parallelrotor permanent magnet synchronous motor

作　　者：戈宝军[1] 范阵雨 林鹏[1] GE Baojun;FAN Zhenyu;LIN Peng(National Engineering Research Center of Large Electric Machines and Heat Transfer Technology,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学大型电机电气与传热技术国家地方联合工程研究中心,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2024年第10期55-65,共11页Electric Machines and Control

摘　　要：双并列转子电机在驱动两侧非对称负载时,轻载侧电机的功角较低,产生了电机材料浪费,效率低等问题。为提升电机整体输出功率,基于双并列转子电机基本理论采用解析法求得电机驱动转矩平均值的表达式,进而提出轻载侧绕组提前的结构设计。而后以一台12极72槽双并列转子电机为例,建立其磁网络模型,通过麦克斯韦应力张量法得出驱动转矩的解析计算式,分析转子偏差角对电机基本转矩脉动的影响,得出最佳绕组提前槽数。最后,针对电机转矩脉动较大的问题,使用响应曲面法,以基本转矩脉动为目标函数,以永磁体偏心距、永磁体极弧系数、并接区高度作为自变量对电机进行优化,有效降低电机转矩脉动,验证了绕组前置的结构改进对提升电机非对称状态下的输出转矩具有显著效果。When the double-parallel rotor motor drives the asymmetric load on both sides,the power Angle of the light side motor is low,resulting in motor material waste and low efficiency.To improve the overall output power of the motor,based on the basic theory of dual parallel rotor motors,an analytical method was used to obtain the expression for the average driving torque of the motor,and then a structural design for advancing the winding on the light load side was proposed.Then,taking a 12-pole 72-slot double-parallel rotor motor as an example,the magnetic network model was established,and the analytical calculation formula of driving torque is obtained through Maxwell stress tensor method.The influence of rotor deviation angle on the basic torque pulsation of the motor was analyzed,and the optimal number of winding advance slots was obtained.Finally,for the problem of large motor torque pulsation,the response surface method was used to optimize the motor with basic torque pulsation as the objective function,and the eccentricity of permanent magnet,polar arc coefficient of permanent magnet and joint height as the independent variables,which effectively reduced the motor torque pulsation.It was verified that the structural improvement of winding front had a significant effect on improving the output torque of the motor under asymmetric state.

关 键 词：永磁同步电机 双并列转子 转矩脉动 等效磁网络 响应曲面法 耦合区 

分 类 号：TM351[电气工程—电机]