内置式分数槽集中绕组伺服电机过载能力研究  

Study on the Overload Capacity of IPM Servo Motors

作　　者：李文瑞 姜璐 杨松 甘磊 Li Wenrui;Jiang Lu;Yang Song;Gan Lei(BYD Auto Industry Company Limited,Shenzhen,Guangdong 518083,China;Midea Group Co.,Ltd.,Foshan,Guangdong 528311,China)

机构地区：[1]比亚迪汽车工业有限公司,广东深圳518083 [2]美的集团,广东佛山528311

出　　处：《机电工程技术》2024年第10期236-239,共4页Mechanical & Electrical Engineering Technology

摘　　要：随着智能工业机器人的发展,伺服电机转矩密度及过载能力不断提升。然而过载提升将导致电机温升过高等问题。对此,提出一种具有高过载能力和较低温升的内置式伺服电机设计方案。首先,分析影响永磁同步电机过载能力的主要因素,并从基本转矩公式出发,研究电机空载反电势和交、直轴电感与极限输出转矩的内在关系;其次,对电机绕组形式及极槽配合等进行优选;再次,在定子冲片和铁心长度保持不变的条件下,利用有限元法对比分析不同内置式转子拓扑结构和电、磁负荷配比对过载能力的影响规律。仿真结果表明,内置式“一”字型、“V”字型和Spoke型拓扑聚磁性逐渐增强,抗饱和能力逐渐减弱,最大转矩分别为6.1、5.8、5.7 N·m。另外通过优化电、磁负荷配比,可以有效抑制磁路饱和,提高过载能力。With the development of intelligent industrial robots,torque density of servo motor is constantly improving.However,it will lead to problems such as excessive motor temperature rise.An interior permanent magnet(IPM)servo motor design scheme with high overload capacity and low temperature is proposed.Firstly,the main factors affecting the overload capacity of permanent magnet synchronous motors are analyzed,and the intrinsic relationship among open-circuit EMF of the motor,inductance of the alternating and direct axes and the ultimate output torque is studied from the basic torque formula.Secondly,the motor winding form and pole-slot combination are optimized.Next,keeping the same core length and same stator core,finite element method(FEM)is used to comparatively analyze the effects of different IPM topologies and electric and magnetic load ratios on overload capacity.Simulation results show that magnetic flux concentrating performances of“—”type,“V”type and spoke type with maximum torque of 6.1,5.8,5.7 N·m respectively are increasing in sequence order while the magnetic saturation inhibition performances are decreasing.Besides,the magnetic saturation can be inhibited effectively by the optimization of electric/magnetic load allocations so that the overload capacity can be enhanced.

关 键 词：过载能力 磁路饱和 内置式伺服电机 

分 类 号：TM32[电气工程—电机]