The Performance Enhancement of BLDC Motor Using Halbach Array Rotor

Abstract

This paper presents the design of a radial flux Brushless dc (BLDC) motor with a special type of permanent magnet arrangement known as Halbach-array magnet arrangement. Halbach-array magnets are placed in between the rotor poles and its magnetization is set in such a way so that it increases the overall air gap flux density. The performance of the Halbach-BLDC motor is analyzed. The aim of this paper is to compare the design and performances of a Halbach-BLDC motor with a conventional BLDC motor. The designs are tested using FEA solutions. The experiment shows that the Halbach-BLDC motor enhances the performance by increasing its speed, overall torque and the magnetic flux density. A 48V 0.5kW 8 pole Halbach-BLDC motor is designed and analysed using Ansys Maxwell software.