目前在深井泵市场中，感应潜水电机的应用较为广泛，但是普遍体积大、效率低，水泵耗能严重。永磁同步电机具有高效率、高功率因数以及大功率密度等优点。因此用永磁同步电机代替感应电机作为深井泵的驱动设备，既能提高电机的性能，又能节能减费，响应国家“碳减排”的号召。为了满足最新电机能效等级的要求，根据深井泵对其配套电机要求的特殊性，针对市面上一款22 kW的深井泵用感应潜水电机，设计出一款相同型号的永磁同步潜水电机。运用有限元分析计算，对其在额定工况下性能参数以及各类损耗和感应电机的数据进行对比分析，并对所设计的永磁同步电机进行温度场仿真验证其合理性。对两种电机生产成本以及能耗值进行经济效益评估，计算结果证明所设计的永磁同步潜水电机在一定的时间内便可以完成电机的成本回收，性价比优越，同时为同类深井泵用电机的设计分析提供参考。

Submersible induction motors are currently more widely used in the deep well pump market, but they are generally large and inefficient, resulting in serious pump energy consumption. Permanent magnet synchronous motors have the advantages of high efficiency, high power factor and high power density. Therefore, the use of permanent magnet synchronous motors instead of induction motors as the drive equipment for deep well pumps can not only improve the performance of the motor, but also save energy to reduce electricity costs, in response to the national “carbon emission reduction” call. In order to meet the requirements of the latest national standards for motor energy-efficiency rating, according to the special requirements of deep-well pumps for their supporting motors, a 22 kW water-filled submersible induction motors on the market, a same of water-filled permanent magnet synchronous submersible motors is designed. The finite element analysis calculation is used to compare and analyze the performance parameters and the data of various loss and induction motors under rated working conditions, and the temperature field simulation of the designed permanent magnet synchronous motor is carried out to verify its rationality. The production cost and energy consumption of the two motors are evaluated for economic benefits. And it can be seen that the designed permanent magnet synchronous submersible motor can complete the cost recovery of the motor within a certain period of time, which is cost-effective and superior. And at the same time, it provides a reference for designing and analyzing motors for similar deep-well pumps.

辽宁省“揭榜挂帅”科技计划项目(2023JH1/11100010)