Affiliations: [a] Department of Electrical and Computer Engineering, Kasetsart University Chalermphakiet Sakon Nakhon Campus, Sakon Nakhon, Thailand | [b] School of Engineering, Royal Melbourne Institute of Technology (RMIT), Melbourne, VIC, Australia | [c] Department of Electrical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand
Correspondence:
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Corresponding author: Warat Sriwannarat, Department of Electrical and Computer Engineering, Kasetsart University Chalermphakiet Sakon Nakhon Campus, Sakon Nakhon, 47000, Thailand. Tel.: +66 8016 06921; E-mail: [email protected], [email protected]
Abstract: Machine ratio adaptation of a dual-PM modular doubly salient permanent magnet machine (DPM-DSPM) was proposed to improve the torque characteristics. An optimization design process was examined. Essential machine indicators were investigated to obtain an optimal machine ratio. It was found that p = 4 and a 0.8 rotor pole width ratio of the DPM-DSPM produced the best essential machine indicator that provided the appropriate magnetic flux path and high flux regulation quality. Then, the DPM-DSPM with an optimal machine ratio was investigated based on open-circuit and on-load tests and then compared to a reviewed DPM-DSPM. The results, based on 2-D finite element analysis, verified that the optimal proposed DPM-DSPM had better torque characteristics. In particular, the optimal proposed structure produced 35.04% higher electromagnetic torque with 61.75% lower ripple torque than the review structure. Therefore, an optimal machine ratio for a DPM-DSPM can be beneficial in solving industrial machine problems, especially noise reduction from vibration.
