Performance Analysis of Permanent Magnet Flux Switching Machine Based on Modular Rotor

Abstract

Nowadays, electric motor with segmented rotor has attained a lot of interest of researcher for electric vehicle applications due to its high output torque and output power. Lately, Salient rotor in permanent magnet flux switching machine (PMFSM)has become attractive for provide high torque and power. unenviably, salient rotor inherited longer flux paths, high iron loss and winding loss, Moreover, PMFSM uses high PM volume and more flux leakage resulting in poor performance. In this paper a new structure of rotor known as modular rotor is introduced which enables reduction in iron losses. The other advantage of modular rotor topology is to reduce the mass of the rotor over a conventional salient rotor. The electromagnetic performance of modular rotor PMFSM machine is analysed by 2-D finite element analyses by using JMAG Designer 14.1 software. The motor performance is examined in terms of coil test, flux distribution, flux lines and average torque. The proposed motor securing the initial torque of 34.44 Nm and power of 12Kw at maximum current density of 30Arms/mm2.From the result it is concluded that modular rotor based PMFSM motor is suitable for light weight electric vehicles.