蒸发冷却环境下电机定子绝缘与传热的试验研究

蒸发冷却，在定子绝缘方面优越于其它冷却方式之处在于，它在冷却定子的同时自然形成一个气、液、固三相的绝缘体系。为电机定子的运行提供了安全、可靠、高效的绝缘、传热的整体大环境．本文以一台高功率密度、高速整流异步发电机的定子为研究对象。对浸泡式蒸发冷却中的气、液、固三相绝缘体系的电场、热场分布等问题进行了系统的试验分析．根据制造企业的工艺允许条件。提供三种适合于蒸发冷却电机定子的新型绝缘结构，基于试验结果，对这些结构给予了可行性分析。得出了有价值的试验研究结论．

Study on Insulation and Heat Transfer of Stator under Evaporative Cooling by Testing

Evaporative cooling, in the aspect of stator insulation, is superior to other cooling methods, because it naturally forms a insulation system of gaseity, liquid and solid while it cools the stator. This system offers a safe, reliable and effective whole surrounding for insulation and heat transfer of the running stator. By testing, this paper studies the insulation system consisted of gaseity, liquid state and solid state materials, basing on a commutate asynchronism generator of high power density and speed, It mainly studies on capabilities of heat transfer and electric. According to the acceptant technics condition of the manufacture, the paper offers three kind of new stator insulation structures adapted to evaporative cooling mode, and gives the testing results and feasible research to these new insulation structure. At last a valuable research conclusion is educed.