Design of Permanent Magnet Synchronous Motor for Efficient Solar Pumping System

Solar pumping system is the new era for the irrigation system when it comes to irrigation in the remote areas. For this purpose of pumping deep borewell submersible motors and pumps is used for water pumping. As no Net Positive Suction Head (NPSH) is required, it is much better than normal centrifugal pumps. Till now, the general borewell motors with squirrel cage induction motors are being used for borewell submersible applications, but they have limited efficiencies. Efficiency plays an important role when it comes to solar pumping system, as the overall efficiency increases, the system becomes cheaper. The purpose of this paper is to design Permanent Magnet Synchronous Motor for borewell submersible application. The bar magnet, V-shaped magnet and U-shaped magnet are used for rotor and the designs are optimized with the help of Genetic Algorithm feature in ANSYS. Initial calculations are done analytically and then three parameters, i.e. Magnet thickness, Back Iron on rotor and rib thickness, are used as parameters for GA. The designed V-shaped motor is found to be the best arrangement of magnets for developing the efficient motor with efficiency as high as 92.24%.