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Influence of work environment on thermal state of electric mine motors

机译:工作环境对矿井电动机热状态的影响

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The paper presents a model for calculations of the temperature field in electric mine motors with a water cooled frame. That model was worked out with use of modified and improved thermal networks developed by the author for determining the temperature distributions in different types of ac machines. Thermal calculations for a selected type of 400 kW mining motor were performed with use of an original computer program. Their results were compared with those obtained from measurements. On the basis of the verified simulation results there was determined the influence of value changes of parameters characterising the work environment condition (ambient temperature, inlet temperature and cooling water discharge, degree of covering the casing with coal dust) on the mining motor thermal state.
机译:本文提出了一个模型,用于计算带有水冷框架的矿用电动机的温度场。该模型是通过使用作者开发的改进和改进的热网络来确定不同类型的交流电机中的温度分布而得出的。使用原始计算机程序对选定类型的400 kW采矿电机进行热计算。将他们的结果与从测量中获得的结果进行比较。根据验证的仿真结果,确定了表征工作环境条件(环境温度,入口温度和冷却水排放,煤粉覆盖壳体的程度)的参数值变化对采矿电机热状态的影响。

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