Investigation of Electromagnetic Losses Considering Current Harmonics in High-Speed Permanent Magnet Synchronous Motor

Ju-Hyeong Lee, Soyoung Sung, Han-Wook Cho, Jang-Young Choi () and Kyung-Hun Shin ()
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Ju-Hyeong Lee: Department of Power System Engineering, Chonnam National University, Yeosu 59626, Republic of Korea
Soyoung Sung: Alternative Fuels and Power System Research Center, Korea Research Institute of Science and Ocean Engineering, Daejeon 34103, Republic of Korea
Han-Wook Cho: Department of Electric, Electronic, and Communication Engineering Education, Chungnam National University, Daejeon 34134, Republic of Korea
Jang-Young Choi: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Kyung-Hun Shin: Department of Power System Engineering, Chonnam National University, Yeosu 59626, Republic of Korea

Energies, 2022, vol. 15, issue 23, 1-15

Abstract: This paper presents a characteristic analysis and experimental verification for predicting the electromagnetic losses in high-speed permanent magnet synchronous motors. To predict the operating characteristics (such as speed and input current), dynamic modeling is conducted that combines models for the space vector pulse width modulation (SVPWM) inverter and high-speed permanent magnet synchronous motor (HPMSM). By applying the predicted harmonic currents to the electromagnetic analysis, DC and AC copper losses of the stator winding, and eddy current loss of the rotor sleeve and rotor permanent magnet, are comprehensively analyzed using the finite element (FE) method. In particular, by analyzing the magnetic field behavior of magnetic flux density according to harmonics, a core loss analysis technique was presented. The validity of the hybrid analysis, which combines the stator copper loss and rotor eddy current loss derived from the FE analysis and the proposed core loss analysis, was verified through comparison with the experimental results under various operating conditions. Compared with the experimental results, the error of total losses using the hybrid analysis with a sinusoidal current was about 47.39%, and total losses using the hybrid analysis with a harmonic current was significantly improved to within 3.7%.

Keywords: dynamic modeling; electromagnetic losses; experimental verification; high-speed permanent magnet synchronous motor (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: 2022
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