Design of BLDC Hub Motor using FEM analysis

The aim of the paper is to design a simulation model of Permanent Magnet Brushless DC (PMBLDC) and analyze the No-load, Load characteristics and cogging torque of BLDC Hub Motor. The Motor must be designed in the proper dimensions only then the motor can be used for a particular application. Before manufacturing the motor, the torque and Cogging torque of the motor must be known as the cogging torque should always be less than that of net torque. If not, the motor will not freely rotate and also draws large amount of current. This paper is to obtain torque and Cogging torque values through Simulation using MAGNET Software version 7.4.1(FEM ANALYSIS). It mainly deals with the analysis of Flux distribution and Saturation (Flux density) in the core.