Design method of asynchronous motor for pump

The embodiment of the invention relates to a method for designing an asynchronous motor for a pump, the asynchronous motor is applied to a centrifugal pump, and the method comprises the following steps: selecting a centrifugal pump hydraulic model according to a preset centrifugal pump design index, and extracting a motor design index through the selected centrifugal pump hydraulic model; selecting a motor model according to the motor design indexes, setting a plurality of parameters in the selected motor model to form a plurality of motor design schemes, and determining motor specific point performance corresponding to each scheme; wherein the parameter setting comprises setting a fixed value and setting a range value; and screening the plurality of motor design schemes according to the motor design indexes and the motor specific point performance corresponding to each motor design scheme, and if the motor design schemes meeting the motor design indexes exist, returning the motor design schemes meeting prese