Design of a high power density Halbach BLDC motor for an electric vehicle propulsion

Abstract

The electric drives used for vehicle propulsion need to be highly efficient and high power dense to improve the performance of electric vehicles (EV) and make them competent in transportation applications. In the similar lines, this paper proposes a radial flux brushless direct current (BLDC) motor with surface magnet rotor with a Halbach array. The magnetic equivalent circuit of the motor is derived; nonlinear electromagnetic analysis carried out and arrived at performance characteristics for an EV propulsion. The proposed topology is compared with conventional BLDC motor with surface mount magnets and found an increment of 20% in power density. The hardware is realized, tested for its performance and the results are closely matching with design parameters.

Design and Simulation Analysis of Stator Slots for Small Power Permanent Magnet Brushless DC Motors

“…To reduce the cogging torque in the permanent magnet brushless DC motor, Anuja and Doss adopted asymmetric permanent magnets, which reduced the magnet locking between the stator and rotor [14]. Anuja and Ravikumar et al also used the fnite element analysis method and adjusted the rotor magnetic displacement to reduce the cogging torque in a permanent magnet brushless DC motor [15,16]. Zuki et al studied various parameters of diferent types of permanent magnet brushless DC motors with double-stator structures and concluded that the back electromotive force (EMF) of the permanent magnet brushless DC motor with a double-stator slot rotor structure was the highest [17].…”

Hybrid teaching-learning with comprehensive learning capability for electromagnetic device design problems

“…Metaheuristic approaches have shown to reach an approximate optimal solution with a population of individuals evolving toward the global best solution of the fitness function. More and more successful applications have been reported in solving engineering design problems in recent years, [11][12][13][14][15][16][17][18] including the optimal design of BLDC motors and electromagnetic actuators. For example, Potnuru et al 19 presented a new developed nature-inspired flower pollination algorithm to design the speed control of BLDC motor with optimal PID tuning and successfully demonstrated its effectiveness by comparing with other methods.…”