大功率永磁直驱电力机车牵引电机关键技术研究

Study on Key Technologies of Traction Motor For High-power Permanent Magnet Direct Drive Electric Locomotive

大功率永磁同步直驱电机首次在电力机车上使用,虽然相比传统的异步电机有很多优点,但同时其设计难度也非常大,因此重点介绍大功率永磁直驱电机内部结构、风路结构,和其所使用的永磁材料,再从其电磁设计难点方面进行了重点分析,并对其关键温升试验进行了仿真介绍和实际试验结果,通过温升结果发现其电机设计缺陷,并给出了相应的改造方案使之满足设计要求,同时给出了永磁电机相关试验数据验证了其优势性。

The high-power permanent magnet synchronous direct drive motor is used on electric locomotive for the first time.Although it has many advantages compared with the traditional asynchronous motor,it is also very difficult to design.Therefore,this paper focuses on the internal structure of high-power permanent magnet direct drive motor.The wind path structure and the permanent magnet materials used in it are analyzed from the perspective of electromagnetic design difficulties.The key temperature rise test is simulated and the actual test results are obtained.The motor design is found through the temperature rise.Defects,and the corresponding transformation plan is given to meet the design requirements.At the same time,the experimental data of permanent magnet motor is given to verify its superiority.