UTeM Conference Systems, Malaysia University Conference Engineering Technology

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Preliminary Design of Field Excitation Flux Switching Motor on the Impact of Various Rotor Pole Number for Hybrid Electric Vehicles
Zhafir Aizat Husin, Erwan Sulaiman, Faisal Khan, Mohd Fairoz Omar

Last modified: 2014-10-28

Abstract


This paper presents a new structure of field excitation flux switching motor (FEFSM) as an alternative candidate of non-permanent magnet (PM) machine for hybrid electric vehicles (HEVs) drives. The effect and performances of rotor pole number with similar armature coil slot configurations on the stator of the proposed FEFSM is analyzed for HEV applications. The stator of projected machine consists of iron core made of electromagnetic steels, armature coils and field excitation coils as the only field mmf source. The rotor is consisted of only stack of iron and hence, it is reliable and appropriate for high speed operation. Under some design restrictions and specifications, design principles and initial performances of the proposed motor at various rotor pole numbers with 8 stator slots are demonstrated. Initially, the coil arrangement tests are examined to validate the operating principle of the motor and to identify the zero rotor position. Furthermore, the profile of flux linkage, induced voltage, cogging torque and torque characteristics are observed based on 2D finite element analysis (FEA). The results obtained show that the appropriate combination of stator slot-rotor pole configurations are 8S-12P and 8S-4P with lowest cogging torque as well as sinusoidal flux waveforms and 8S-8P with highest average torque and power, respectively. Thus, by further design modification and optimization, it is expected that the motor will successfully achieved the target performances for HEV application.

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