Computer Aided Design and Parametric Analysis of Radial Flux Permanent Magnet Brushless DC (PMBLDC) Motor

Abstract

As conventional motors have many limitations, research is going on in the field of Advance Electrical Machines to enhance the performance of electrical motor. PMBLDC motor with advance technology provides better performance; as a result it can be utilized for various industrial and domestic applications. The use of permanent magnets (PMs) in electrical machines in place of electromagnetic excitation results in many advantages such as no excitation losses, compactness, high efficiency, high torque-to-current ratio, improved efficiency, fast dynamic response, as opposed to conventional motors. Due to the absence of gear mechanism, it is most preferred choice in hybrid electrical vehicles as the overall weight of vehicle reduces and efficiency improves. Design of Brushless Permanent Magnet motors can be intensive due to the requirement of many design constraints. The main objective of this project is to design a PMBLDC motor by conventional method and CAD is carried out for the whole design of Radial Flux PMBLDC motor . Based on outcome of CAD program, finite element analysis (FEA) is carried out to validate CAD results. Three standard ratings of Radial Flux Permanent Magnet Brushless DC Motor is analyzed and detailed parametric analysis is done in order to improve the performance of the motor. On the later part of this project, few of the cogging torque reduction techniques have been successfully applied in order to improve the quality of the torque profile.