摘要
为提高电动机运行温度保护的性能,本文针对全封闭外置风扇冷却电动机定子结构特点,设计了异步电动机温度测试方案,测量了定子绕组三维温度分布。测量结果表明,由于结构的不对称以及由此导致的散热条件不对称,电动机定子绕组的温度分布也是不对称的,最高温度区域位于接线盒区域的绕组端部。在电动机温度分布测试结果的基础上,分析了定子绕组温度分布特点及其原因,提出了电动机保护和优化设计的新思路,为实现电动机运行温度保护奠定基础。
To improve the performance of motor temperature protection, this paper designed a temperature test system of totally enclosed fan cooled （TEFC） induction motor according to their structural characteristics. Three-di- mensional temperature distribution of stator windings was measured. Measurement results show that because of the asymmetry of the structure and the heat dissipation conditions, temperature distribution of stator windings is asym- metric too. Temperature of end windings which located at the terminal box area is the highest. Based on the test results, the characteristics and reasons of stator windings temperature distribution were analyzed, based on which new ideas of motor protection and optimization design were put forward.
出处
《电工电能新技术》
CSCD
北大核心
2010年第2期72-76,共5页
Advanced Technology of Electrical Engineering and Energy
关键词
异步电动机
温度分布
测试
分析
保护
induction motor
temperature distribution
test
analysis
protection
