発熱角柱群の温度実験に基づく油冷モータコイルエンド熱流体解析の基礎技術開発

抄録

In order to improve the performance of motors for electric vehicles, it is necessary to optimize the oil cooling method for the coil ends. In the coil-end oil cooling design, thermal fluid simulation is used to obtain guidelines for improving the efficiency and optimizing the cooling. On the other hand, since the coil end has a complicated structure, it is difficult to verify the validity of the simulation method for the actual geometry and search for improvement methods. For the validation, it is reasonable to simplify the situation and obtain the simplified experimental results. In this study, the coil end is imitated by copper heated horizontal rectangular columns, and the temperature distributions are measured when it is cooled with oil. The prediction accuracy of temperature calculated by particle-based method thermal fluid simulation is verified. It is confirmed that the temperature obtained from this experiment is useful.