屏蔽电机温度场仿真分析  

Simulation Analysis of Temperature Field of Canned Motor

作　　者：胡晓琦 张玉龙 Hu Xiaoqi;Zhang Yulong(First Representative Office in Harbin,Marine Equipment Shenyang Bureau,Harbin 150001,China;Marine Equipment Shenyang Bureau,Shenyang 110000,China)

机构地区：[1]海装沈阳局驻哈一代表室,黑龙江哈尔滨150001 [2]海装沈阳局,辽宁沈阳110000

出　　处：《防爆电机》2024年第6期57-60,90,共5页Explosion-proof Electric Machine

摘　　要：科技进步推动屏蔽电机性能有所提升,然而,定子与转子屏蔽套位于气隙两侧,导致气隙加宽,进而降低了电机功率因数和效率,并使电机温度升高更为显著。过高的温度对电机绝缘材料构成严峻挑战,不达标的绝缘将加速老化,增加安全事故风险。同时,永磁体性能也会受到影响,出现可逆或不可逆的退磁。此外,转轴因高温发生微小形变,降低其结构强度。因此,温升已成为永磁屏蔽电机性能进一步提升的主要障碍。为此,现以永磁屏蔽电机为核心,构建了温度场模型,并详细研究了流体流速、屏蔽套厚度及铁心叠压系数对温度场的影响,为探索屏蔽电机温度场控制方法提供了数据支撑。The scientific and technological advances promote the performance improvement of canned motors.However,the shielding sleeves of stator and rotor are located on both sides of the air gap,which results in a wider air gap,and then reduces the power factor and efficiency of the motor and rises the motor temperature significantly.The excessive temperature poses a serious challenge to motor insulation materials,and substandard insulation will accelerate aging and increase the risk of safety accidents.At the same time,it will affect the performance of permanent magnets,and occur reversible or irreversible demagnetization.In addition,the shaft is slightly deformed due to high temperature,which reduces the structural strength.Therefore,the temperature rise has become the main obstacle to further improve the performance of permanent-magnet canned motor.This paper takes a permanent-magnet canned motor as a core to establish the temperature field model,and researches the influences of fluid flow rate,shielding sleeve thickness and core overlaying coefficient on the temperature field in detail.It provides data support to explore the temperature field control method of the canned motor.

关 键 词：屏蔽电机 温度场 屏蔽套 流体流速 铁心叠压系数 

分 类 号：TM301.3[电气工程—电机]