1. Torque characteristic improvement of dual-PM modular doubly salient permanent magnet machine using machine ratio adaptation.
- Author
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Sriwannarat, Warat, Fernando, Nuwantha, Seangwong, Pattasad, Siritaratiwat, Apirat, and Khunkitti, Pirat
- Subjects
PERMANENT magnets ,FINITE element method ,TORQUE ,MAGNETIC flux ,MACHINERY - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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