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Open AccessArticle

Study on Line-Start Permanent Magnet Assistance Synchronous Reluctance Motor for Improving Efficiency and Power Factor

1
Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea
2
Hyundai Transys, Hwaseong 18280, Korea
3
Electric Machines and Drives Research Center, Korea Electrotechnology Research Institute, Changwon 51543, Korea
*
Author to whom correspondence should be addressed.
Energies 2020, 13(2), 384; https://doi.org/10.3390/en13020384
Received: 12 December 2019 / Revised: 27 December 2019 / Accepted: 9 January 2020 / Published: 13 January 2020
(This article belongs to the Special Issue Advances in Rotating Electric Machines)
In order to improve the efficiency, a line-start synchronous reluctance motor (LS-SynRM) is studied as an alternative to an induction motor (IM). However, because of the saliency characteristic of SynRM, LS-SynRM have a limited power factor. Therefore, to improve the efficiency and power factor of electric motors, we propose a line-start permanent magnet assistance synchronous reluctance motor (LS-PMA-SynRM) with permanent magnets inserted into LS-SynRM. IM and LS-SynRM are selected as reference models, whose performances are analyzed and compared with that of LS-PMA-SynRM using a finite element analysis. The performance of LS-PMA-SynRM is analyzed considering the position and length of its permanent magnet, as well as its manufacture. The final model of LS-PMA-SynRM is designed for improving the efficiency and power factor of electric motors compared with LS-SynRM. To verify the finite element analysis (FEA) result, the final model is manufactured, experiments are conducted, and the performance of LS-PMA-SynRM is verified. View Full-Text
Keywords: efficiency; finite element analysis; line-start synchronous reluctance motor; permanent magnet; power factor efficiency; finite element analysis; line-start synchronous reluctance motor; permanent magnet; power factor
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MDPI and ACS Style

Kim, H.; Park, Y.; Liu, H.-C.; Han, P.-W.; Lee, J. Study on Line-Start Permanent Magnet Assistance Synchronous Reluctance Motor for Improving Efficiency and Power Factor. Energies 2020, 13, 384.

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