Analysis and Comparison of Permanent Magnet Synchronous Motors According to Rotor Type under the Same Design Specifications

Woo-Sung Jung, Hoon-Ki Lee, Young-Keun Lee, Su-Min Kim, Jeong-In Lee and Jang-Young Choi ()
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Woo-Sung Jung: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Hoon-Ki Lee: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Young-Keun Lee: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Su-Min Kim: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Jeong-In Lee: Electric Power System Design Team, Hyundai Transys Inc., 95, Hyundaikia-ro, Namyang-eup, Hwaseong-si 18280, Republic of Korea
Jang-Young Choi: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea

Energies, 2023, vol. 16, issue 3, 1-11

Abstract: A surface-mounted permanent magnet synchronous motor (SPMSM) is an electric motor with a simple magnetic circuit design, fast responsiveness, linear torque–current characteristics, speed–voltage characteristics, and constant operating speed. SPMSMs use only magnetic torque; however, interior PMSMs (IPMSMs) have high power densities because they can use reluctance torque. In addition, when flux-weakening control is used, the operating range is wide compared with the SPMSM. This study presents a comparative analysis of the characteristics of SPMSM and bar-type IPMSM. Characteristic analyses are performed by setting the same stator shape, rated speed, number of turns, winding specifications, voltage limit, and magnet usage in a pole/slot combination of six poles and 27 slots. Next, we compare the no-load back electromotive force, cogging torque, and loss characteristics, and perform a characteristic analysis of each model while satisfying the design specifications. No-load and load tests are performed using a back-to-back system. The results of the analysis and experimental results are in good agreement, and the reliability of the analysis results is guaranteed. The SPMSM is approximately 8.5% superior to the IPMSM in terms of core loss, and the eddy current loss is greater than that of the IPMSM.

Keywords: SPMSM; IPMSM; bar-type; electromagnetic characteristics; comparative analysis of characteristics; back electromotive force (back EMF); cogging torque; loss characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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