起重机用永磁电机等效热阻法瞬态温度场计算  

Equivalent Thermal Network Method Transient Temperature Field Calculation in the Permanent Magnet Motor for Crane

作　　者：韩雪岩[1] 于占洋[1] 李生祥[1] HAN Xue-yan YU Zhan-yang LI Sheng-xiang(Shenyang University of Technology,Shenyang 110870 ,China)

机构地区：[1]沈阳工业大学,沈阳110870

出　　处：《微特电机》2017年第10期13-17,共5页Small & Special Electrical Machines

基　　金：国家科技支撑计划课题项目(2015BAF06B00)

摘　　要：对起重机用细长型外转子永磁同步电机瞬态温度场计算分析,由于细长型特殊结构,铜损耗约占总损耗的90%;同时定子绕组处于电机中心,散热能力差,温升计算成为永磁电机设计的关键环节。以采用S3工作制40%通电持续率对起重机用永磁电机进行温升考核,建立了起重机用永磁电机的瞬态等效热网络模型。重点分析了影响瞬态热网络准确计算温升的影响因素,提出了铜损耗热源时变加载方式。基于ANSYS有限元仿真和样机温升试验对比分析,验证了所建立的起重机用永磁电机瞬态等效热网络模型的正确性。The crane with slender shape external rotor permanent magnet synchronous motor transient temperature fieldwas calculated and analyzed. Due to special anti slim structure, copper loss accounts for about 90% of the total loss; at thesame time, the stator winding part was the core of the motor. The heat dissipation of stator winding was difficult and thetemperature rise was the key to the motor design. The $3 duty 40% electricity rate for crane with permanent magnet motoris analyzed. The transient equivalent thermal network model of the motor was set up. The influence factors for the tempera-ture rise of transient thermal network are analyzed. Copper loss of heat time-varying load was proposed. Besides the coeffi-cient heat transfer motor rotor of housing and hollow shaft were calculaled and analyzed. The finite element simulation ofANSYS and prototype temperature rise test were contrasted, and the permanent magnet motor transient equivalent thermalnetwork was proved to be right.

关 键 词：起重机用永磁电机 细长型 瞬态热网络模型 瞬态温度场 

分 类 号：TM351[电气工程—电机]