According to the characteristic that the high slip asynchronous wind generator always runs overload due to its load changes frequently, a 3D finite model of a sample rotor was built, and the heat source of a temperature field and heat exchange factor concerned were decided. A conclusion by calculating a 3D temperature field of the machine rotor was drawn. The maximum temperature of a rotor was produced between the rotor and the shaft. Applying a rotating heat tube to the shaft can solve the problem effectively. With comparison through different methods, the program accuracy was validated. With a reasonable design, the temperature rises of the rotor, shaft and bearing can be drawn down to a permitted value. By using rotating heat tube it can solve the overheat problem of a high slip generator rotor in engineering.%高转差异步风力发电机在运行时风能变化随机性较大,负载变化频繁,电机常常处于过负荷运行.对典型样机转子建立三维有限元模型,根据电磁场计算确定其温度场热源及相关换热系数；通过计算该电机的转子三维温度场分布,得出结论,由于电机处于高转差运行,转子温度过高,转子与转轴相结合部分为转子最高温升部分.进一步提出在转轴中应用旋转热管散热.采用不同方法对计算结果进行对比验证.根据轴承温度要求合理设计热管散热器,可以有效降低转轴、轴承温度至允许范围.研究表明旋转热管散热器可以解决高转差电机工程应用中转子过热问题.
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