永磁同步电机的特点主要有以下几种：
The characteristics of PMSM are as follows:
(1)PMSM本身的功率效率高以及功率因数高;
(1) PMSM has high power efficiency and high power factor;
(2)PMSM发热小，因此电机冷却系统结构简单、体积小、噪声小;
(2) PMSM has small heating, so the motor cooling system has simple structure, small volume and small noise;
(3)系统采用全封闭结构，无传动齿轮磨损、无传动齿轮噪声，免润滑油、免维护;
(3) The system adopts totally closed structure, no wearing of transmission gear, no noise of transmission gear, no lubricating oil and maintenance;
(4)PMSM允许的过载电流大，可靠性显著提高;
(4) The allowable overload current of PMSM is large and its reliability is improved significantly;
(5)整个传动系统重量轻，簧下重量也比传统的轮轴传动的轻，单位重量的功率大;
(5) The weight of the whole transmission system is lighter than that of the traditional axle transmission, and the power per unit weight is larger;
(6)由于没有齿轮箱，可对转向架系统随意设计：如柔式转向架、单轴转向架，使列车动力性能大大提高。
(6) Since there is no gearbox, the bogie system can be designed at will, such as flexible bogie and single axle bogie, which greatly improves the dynamic performance of the train.