The permanent magnet synchronous motor for water pump is a special series of PM motor designed by HIEST according to the operating characteristics of water pump. It can be used for ordinary water pump, submersible water pump and other asynchronous motor operating conditions. The NdFeB permanent magnet material is embedded inside the rotor of the motor to provide excitation, and there is no induction current in the rotor during operation. It has significant features such as high efficiency, small size, light weight, fast dynamic response, low temperature rise, and wider economic operation range than asynchronous motors.