高速动车组永磁同步牵引电动机热管理技术研究

Research on Thermal Management Technology of Permanent-Magnet Synchronous Traction Motor for CRH Train

针对高速动车组永磁牵引电机高功率密度、高效率的技术要求,介绍传统冷却方式下电机的冷却存在的问题,创新性地提出了新型多路并联全域高效冷却结构,详细说明了新型水冷结构的设计、仿真以及试验验证结果。试验结果表明,该永磁电机冷却结构设计合理,在各种工况下均温度分布合理、具有良好的性能表现,满足高速动车组复杂的运用工况要求,同时性能指标优于国外竞争对手。

Aiming at the technical requirements of high-power density and high-efficiency permanent-magnet traction motor for CRH train,this paper introduces the cooling problem of motor under traditional cooling mode,innovatively puts forward a new multi-channel parallel global high-efficiency cooling structure,and explains the design,simulation and experimental verification results of the structure in detail.The test results show that the motor has the advantages of reasonable design of cooling structure,reasonable temperature distribution under various working conditions and good performance appearance.It both meets the requirements of complex operating conditions of CRH train and is better than that of foreign competitors in performance index.