International Journal of Power Electronics and Drive System (IJPEDS) Vol. 10, No. 3, Sep 2019, pp. 1207~1214 ISSN: 2088-8694, DOI: 10.11591/ijpeds.v10.i3.pp1207-1214  1207 Journal homepage: http://iaescore.com/journals/index.php/IJPEDS Comparison of different magnet arrangement on performance of flux reversal permanent magnet (FRPM) machine M. H Remlan, R. Aziz, S. Salimin Departement of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia, Malaysia Article Info ABSTRACT Article history: Received Sep 9, 2018 Revised Jan 16, 2019 Accepted Mar 27, 2019 This paper offers the analysis of performance of Flux Reversal Permanent Magnet (FRPM) machines with different type of magnet arrangements. There are two designs that have been proposed in this report, which one of them has a pair of permanent magnets (PM) with alternate polarities place on surface of stator tooth and the polarities of two adjacent PM at these two stators are identical. This PM arrangement is called as NS-SN configuration. Second design is NS-NS configuration that has different PM polarities on different stator tooth. By comparing this PM arrangement, generally the NS- NS configuration offers high speed and power. However, the NS-SN configuration shows higher maximum torque compared to the previous design. The design process for both configu rations is completely using finite element analysis (FEA) which is JMAG-Designer. To make sure the coil phase is in correct position, the design configuration with coil arrangement tests are evaluated. Finally, each flux of both designs been observed by analyse their torque with various armature current density. Keywords: Finite element analysis Flux reversal Magnet arrangement Permanent magnet Polarities Copyright © 2019 Institute of Advanced Engineering and Science. All rights reserved. Corresponding Author: Roziah Aziz, Departement of Electrical and Electronic Engineering, University Tun Hussein Onn Malaysia (UTHM), 86400 Parit Raja, Johor, Malaysia. Email: roziah@uthm.edu.my 1. INTRODUCTION Permanent magnet (PM) motors basically consist of two parts which are stator and rotor. The stator is a stationary part in the motor and it is powered by alternating current then produces an electric field. While the rotor itself is a moving part in an electric motor and the interaction between winding in the stator and magnetic fields will make is rotate and produce torque around rotor’s axis [1]. Permanent magnet usually located at rotor which is called rotor-PM but there are new designs of PM that can be located at stator which know as stator-PM [2-5]. There are three types of stator-PM machines which are doubly salient PM (DSPM), flux-switching PM (FSPM) machines, and lastly is flux-reversal PM (FRPM) machine [6-12]. Flux reversal permanent magnet (FRPM) machine was first introduced in 1997 for the purpose of combining the advantages of switched reluctance machine (SRM) with the robust rotor structure and permanent magnet machine with large torque density [13]. This combinations produce high performances of machine especially in their simple construction, high fault tolerance, easy maintenance and fast transient response [14]. This makes FRPM machine had been used around the world in many applications such as in electric vehicle, low- speed servo systems and direct-drive winding power generation [15-16]. Figure 1 shows that the conventional three-phase FRPM machine which is the PMs are mounted on the inner part of the stator teeth and the concentrated windings.