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Journal articles on the topic 'Interior permanent magnet'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Beniakar, Minos E., Athanasios G. Sarigiannidis, Panagiotis E. Kakosimos, and Antonios G. Kladas. "Evolutionary Optimization of a Fractional Slot Interior Permanent Magnet Motor for a Small Electric Bus." Materials Science Forum 792 (August 2014): 373–78. http://dx.doi.org/10.4028/www.scientific.net/msf.792.373.

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Fractional Slot Concentrated Winding (FSCW) Interior Permanent Magnet (IPM) motors constitute a favorable choice for electric vehicle applications due to their inherent advantages of high efficiency and performance, field weakening capability and permanent magnet effective shielding from eddy currents. In this paper, an IPM motor with buried sinusoidal magnets for a small electric bus is optimized in terms of both efficiency and performance. The overall magnet volume and the corresponding iron bridge width are maintained within specified borders, thus enabling adequate field weakening and permanent magnet shielding margins. In the optimization process a single-objective Differential Evolution (DE) algorithm is utilized, showing great convergence characteristics.

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2

Alberti, Luigi, Massimo Barcaro, Nicola Bianchi, Silverio Bolognani, Diego Bon, Mosè Castiello, Adriano Faggion, Emanuele Fornasiero, and Luca Sgarbossa. "Interior permanent magnet integrated starter‐alternator." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 30, no. 1 (January 4, 2011): 117–36. http://dx.doi.org/10.1108/03321641111091476.

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3

Dinh Hai Linh. "Torque imporvement of IPM motors with skewing magnetic designs." Journal of Military Science and Technology, no. 76 (December 12, 2021): 3–10. http://dx.doi.org/10.54939/1859-1043.j.mst.76.2021.3-10.

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In this paper, a type interior permanent magnet synchronous motor designs is proposed for sport scooter application to improve constant torque wide speed performance. Interior Permanent Magnet machines are widely used in automotive applications for their wide-speed range operation and low maintenance cost. An existing permanent magnet motor (commercial QS Motor) is 3 kW-3000 rpm. In order to improve torque and power in wide speed range, a IPM electric motor 5.5 kW -5000 rpm can run up to 100 km/h: An Step-Skewing Interior Permanent Magnet motor alternatives is designed and optimized in detail with optimal magnetic segment V shape. The electromagnetic charateristics of Interior Permanent Magnet motors with V shape are compared with the reference Surface Permanent Magnet motor for the same geometry parameter requirements. Detailed loss and efficiency result is also analyzed at rate and maximum speeds. A prototype motor is manufactured, and initial experimental tests are performed. Detailed comparison between Finite Element Analysis and test data are also presented. It is shown that it is possible to have an optimized Interior Permanent Magnet motor for such high-speed traction application. This paper will figure out optimal angle of magnetic V shape for maximum torque and minimum torque ripple.

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4

Ma, Shilun, Xueyi Zhang, and Wenjin Hu. "Design Optimization of Interior Double-Radial Synthetic Magnetic Field Permanent Magnet Generator for Electric Vehicle." MATEC Web of Conferences 202 (2018): 02001. http://dx.doi.org/10.1051/matecconf/201820202001.

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The Interior double-radial permanent magnent generator (IDRPMG) which composed by two groups of rectangular permanent magnets to provide parallel magnetic circuits of the rator and the sator core with less eddy current loss, low hormonic content and low cogging torque of the stator with fractional slot winding is developed. It has the advantages of remarkable magnetism gathering effect, strong magnetic field intensity and high space utilization. Combining Taguchi method and finite element method, the relevant parameters of the permanent magnet size and the angle between the first and second rectangle permanent magnets in rotor are optimized to get better the distortion rate of output voltage waveform, lower cogging torque and higer peak value of airgap flux density. Then finite element simulation is taken for the best optimization scheme through comparative analysis of the machine by before and after optimization. It showed that each performance index is improved after optimization. Finally, the prototype is manufactured, according to the optimization parameters and some experiments are conducted, which results verify the analys is preview well.

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5

Matsumoto, Naohisa, Masayuki Sanada, Shigeo Morimoto, and Yoji Takeda. "Torque Performance and Permanent Magnet Arrangement for Interior Permanent Magnet Synchronous Motor." IEEJ Transactions on Industry Applications 126, no. 7 (2006): 954–60. http://dx.doi.org/10.1541/ieejias.126.954.

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6

Palomo, Roberto Eduardo Quintal, and Maciej Gwozdziewicz. "Effect of Demagnetization on a Consequent Pole IPM Synchronous Generator." Energies 13, no. 23 (December 2, 2020): 6371. http://dx.doi.org/10.3390/en13236371.

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The design and analysis of a permanent magnet synchronous generator (PMSG) are presented. The interior permanent magnet (IPM) rotor was designed asymmetric and with the consequent pole approach. The basis for the design was a series-produced three-phase induction motor (IM) and neodymium iron boron (Nd-Fe-B) cuboid magnets were used for the design. For the partial demagnetization analysis, some of the magnets were extracted and the results are compared with the finite element analysis (FEA).

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7

Ishikawa, Takeo, Naoto Igarashi, and Nobuyuki Kurita. "Failure Diagnosis for Demagnetization in Interior Permanent Magnet Synchronous Motors." International Journal of Rotating Machinery 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/2716814.

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Since a high degree of reliability is necessary for permanent magnet synchronous motors, the detection of a precursor for the demagnetization of permanent magnets is very important. This paper investigates the diagnosis of very slight PM demagnetization. The permanent magnet volume is altered so as to mimic the effect of demagnetization. This paper investigates the influence of demagnetization by using several methods: the 3D finite element analysis (FEA) of the motor, the measurement of high-frequency impedance, and the measurement and FEA of the stator voltage and current under vector control. We have obtained the following results. The back-EMF is proportional to permanent magnet volume, and there is no difference in the demagnetization in the radial direction and in the axial direction. Even harmonics and subharmonics of flux density at the teeth tip could be useful for diagnosis if a search coil is installed there. The relatively low frequency resistance at the d-axis position is useful for diagnosis. Under vector control, the stator voltage is useful except in an intermediate torque range, and the intermediate torque is expressed by a simple equation.

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8

Li, Ya, Hui Yang, Heyun Lin, Shuhua Fang, and Weijia Wang. "A Novel Magnet-Axis-Shifted Hybrid Permanent Magnet Machine for Electric Vehicle Applications." Energies 12, no. 4 (February 16, 2019): 641. http://dx.doi.org/10.3390/en12040641.

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This paper proposes a novel magnet-axis-shifted hybrid permanent magnet (MAS-HPM) machine, which features an asymmetrical magnet arrangement, i.e., low-cost ferrite and high-performance NdFeB magnets, are placed in the two sides of a “▽”-shaped rotor pole. The proposed magnet-axis-shift (MAS) effect can effectively reduce the difference between the optimum current angles for maximizing permanent magnet (PM) and reluctance torques, and hence the torque capability of the machine can be further improved. The topology and operating principle of the proposed MAS-HPM machine are introduced and are compared with the BMW i3 interior permanent magnet (IPM) machine as a benchmark. The electromagnetic characteristics of the two machines are investigated and compared by finite element analysis (FEA), which confirms the effectiveness of the proposed MAS design concept for torque improvement.

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9

Shinagawa, Shuhei, Takeo Ishikawa, and Nobuyuki Kurita. "Characteristics of Interior Permanent Magnet Synchronous Motor with Imperfect Magnets." IEEJ Journal of Industry Applications 4, no. 4 (2015): 346–51. http://dx.doi.org/10.1541/ieejjia.4.346.

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10

Xiao, Yang, Z. Zhu, Geraint Jewell, Jintao Chen, Di Wu, and Liming Gong. "A Novel Asymmetric Rotor Interior Permanent Magnet Machine With Hybrid-Layer Permanent Magnets." IEEE Transactions on Industry Applications 57, no. 6 (November 2021): 5993–6006. http://dx.doi.org/10.1109/tia.2021.3117228.

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11

Duan, Shiying, Libing Zhou, and Jin Wang. "Flux Weakening Mechanism of Interior Permanent Magnet Synchronous Machines With Segmented Permanent Magnets." IEEE Transactions on Applied Superconductivity 24, no. 3 (June 2014): 1–5. http://dx.doi.org/10.1109/tasc.2013.2280847.

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12

Wang, Xiuping, Chuhan Yang, Yan Li, and Chunyu Qu. "Design and Analysis of Permanent Magnet Parameters for Interior Permanent Magnet Synchronous Motor." IOP Conference Series: Earth and Environmental Science 632 (January 14, 2021): 042075. http://dx.doi.org/10.1088/1755-1315/632/4/042075.

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13

WOO, BYUNG-CHUL, DO-KWAN HONG, and JI-YOUNG LEE. "VARIATION OF ELECTRIC PROPERTIES BETWEEN SURFACE PERMANENT MAGNET AND INTERIOR PERMANENT MAGNET MOTOR." International Journal of Modern Physics: Conference Series 06 (January 2012): 109–14. http://dx.doi.org/10.1142/s2010194512003029.

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The most distinctive advantage of transverse flux motor(TFM) is high torque density which has prompted many researches into studying various design variants. TFM is well suited for low speed direct drive applications due to its high torque density. This paper deals with simulation based comparisons between a surface permanent magnet transverse flux motor(SPM-TFM) and an interior permanent magnet transverse flux motor(IPM-TFM). A commercial finite element analysis(FEA) software Maxwell 3D is used for electromagnetic field computation to fully analyze complex geometry of the TFMs. General characteristics, such as cogging torque, rated torque and torque ripple characteristics of the two TFMs are analyzed and compared by extensive 3D FEA.

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14

Kawase, Y., T. Ota, and H. Fukunaga. "3-D eddy current analysis in permanent magnet of interior permanent magnet motors." IEEE Transactions on Magnetics 36, no. 4 (July 2000): 1863–66. http://dx.doi.org/10.1109/20.877808.

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15

Rahman, M. A. "History of interior permanent magnet motors [History]." IEEE Industry Applications Magazine 19, no. 1 (January 2013): 10–15. http://dx.doi.org/10.1109/mias.2012.2221996.

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16

OSHEIBA, A. M., M. A. RAHMAN, A. D. ESMAIL, and M. A. CHOUDHURY. "STABILITY OF INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTORS." Electric Machines & Power Systems 16, no. 6 (January 1989): 411–30. http://dx.doi.org/10.1080/07313568908909399.

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17

Chalmers, B. J. "Performance of interior-type permanent-magnet alternator." IEE Proceedings - Electric Power Applications 141, no. 4 (1994): 186. http://dx.doi.org/10.1049/ip-epa:19941207.

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18

Liaw, C. Z., W. L. Soong, B. A. Welchko, and N. Ertugrul. "Uncontrolled Generation in Interior Permanent-Magnet Machines." IEEE Transactions on Industry Applications 41, no. 4 (July 2005): 945–54. http://dx.doi.org/10.1109/tia.2005.851557.

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19

Sun, X., B. Su, L. Chen, Z. Yang, and K. Li. "Design and analysis of interior composite-rotor bearingless permanent magnet synchronous motors with two layer permanent magnets." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 6 (December 1, 2017): 833–43. http://dx.doi.org/10.1515/bpasts-2017-0091.

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Abstract In this paper, a new type of interior composite-rotor bearingless permanent magnet synchronous motors (BPMSMs) with two layer permanent magnets (PMs) is proposed. In order to reduce the torque ripple of this kind of motors, the sizes of PMs are optimized. Moreover, the magnetic field analysis of the interior composite-rotor BPMSM with two layer PMs is carried out by the finite element method (FEM). The corresponding static electronic magnetic characteristics at no load, including magnetic field, PM flux linkage and inductance, are studied in detail. In addition, electromagnetic torque characteristics and suspension force characteristics are also investigated thoroughly. The results of the analysis and simulation lay a significant foundation for further research on the interior composite-rotor BPMSMs with two layer PMs.

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20

Ma, Qingqing, Ayman El-Refaie, and Bruno Lequesne. "Low-Cost Interior Permanent Magnet Machine With Multiple Magnet Types." IEEE Transactions on Industry Applications 56, no. 2 (March 2020): 1452–63. http://dx.doi.org/10.1109/tia.2020.2966458.

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21

Minh, D. B., N. H. Phuong, V. D. Quoc, and H. B. Duc. "Electromagnetic and Thermal Analysis of Interior Permanent Magnet Motors Using Filled Slots and Hairpin Windings." Engineering, Technology & Applied Science Research 12, no. 1 (February 12, 2022): 8164–67. http://dx.doi.org/10.48084/etasr.4683.

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This paper analyzes the electromagnetic and thermal design of interior permanent magnet motors using filled slots and hairpin windings for electric vehicle applications. Two models of ∇ shape of the interior permanent magnet motors have been proposed to evaluate the temperature distribution and cogging torque performance. A narrow opening slot of the interior permanent magnet of 48 slots/8 poles with the filled winding has been designed to investigate the electromagnetic torque because the cogging torque depends on opening stator slots. A parallel–rectangle slot of the interior permanent magnet with the hairpin winding has been also implemented with finite element analysis to evaluate their performances. Normally, the slot opening of the interior permanent magnet stator equals the slot width, it is greater than the size of hairpin windings, and the cogging torque is increased significantly with a bigger slot opening. The main advantage of the hairpin winding design is the high slot fill factors. Hence, the lower the current density, the higher torque, and efficiency are, than the normal design with the same geometry parameters. To improve the cogging torque due to the wide slot opening, the step–skew rotor slices have been arranged to minimize the torque ripple with different skewing angles.

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22

Ishikawa, Takeo, and Naoto Igarashi. "Failure Diagnosis of Demagnetization in Interior Permanent Magnet Synchronous Motors Using Vibration Characteristics." Applied Sciences 9, no. 15 (August 1, 2019): 3111. http://dx.doi.org/10.3390/app9153111.

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The detection of a precursor to the demagnetization of permanent magnets is very important because a high degree of reliability is necessary in permanent magnet synchronous motors (PMSMs). This paper investigated the diagnosis of very slight PM demagnetization. A part of the permanent magnet was altered to non-magnetic material so as to mimic the effect of demagnetization. The vibration characteristics were clarified for low demagnetization in PMSMs driven under vector control by experiments and 3D finite element (FE) analysis. We found that the amplitude of some components of the vibration was approximately proportional to the demagnetization level of the PM and the load torque. Therefore, the measurement of vibration and torque is very useful for the estimation of the magnetization level of PMSMs under vector control except for under very light load.

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23

Kim, Hae-Joong, Doo-Young Kim, and Jung-Pyo Hong. "Structure of Concentrated-Flux-Type Interior Permanent-Magnet Synchronous Motors Using Ferrite Permanent Magnets." IEEE Transactions on Magnetics 50, no. 11 (November 2014): 1–4. http://dx.doi.org/10.1109/tmag.2014.2323818.

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24

Yu, Dong, Xiaoyan Huang, Xiaochen Zhang, Jian Zhang, Qinfen Lu, and Youtong Fang. "Optimal Design of Outer Rotor Interior Permanent Magnet Synchronous Machine With Hybrid Permanent Magnet." IEEE Transactions on Applied Superconductivity 29, no. 2 (March 2019): 1–5. http://dx.doi.org/10.1109/tasc.2019.2895260.

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25

Gholamian, Seyed Asghar, and Hamid Reza Gholinejad. "A DIFFERENT APPROACH IN OPTIMUM DESIGN PROCESS AND FEA VALIDATION OF LOW-SPEED MULTI-PHASE IPMSMS." IIUM Engineering Journal 18, no. 1 (May 30, 2017): 133–45. http://dx.doi.org/10.31436/iiumej.v18i1.687.

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Magnets placement effects on permanent magnet motors performance, because of its different magnetic flux density distribution. Therefore, different types of magnet placement should be examined experimentally or by valid simulations. In this paper, first, an interior permanent magnet synchronous motor (IPMSM) called spoke type with specifications related to the propulsion of ships is designed and then optimized by ant colony algorithm to increase the torque-to-volume ratio. The design procedure and its formulas presented as simple as possible. Then, to verify the optimization results of the optimized motor, a Two-dimensional finite element analysis (FEA) is done. Also in this analyze the core and the slot saturation was studied.

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26

Xia, Tao, Hang Li, Yongming Xia, Yangfei Zhang, and Pengfei Hu. "Detent Force Reduction in Linear Interior Permanent Magnet Generator for Direct-Drive Wave Power Conversion." Electronics 11, no. 23 (November 25, 2022): 3896. http://dx.doi.org/10.3390/electronics11233896.

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The permanent magnet linear generator is widely applied in the direct-drive wave energy converter (DD-WEC) because of its high power density. In this paper, a novel tubular permanent magnet linear generator, which consists of multilayer and interior permanent magnets (MI-TLPMGs), is presented for DD-WEC, which improves the output power and back electromotive force (back EMF) through the flux concentrating effect. However, MI-TLPMGs with multilayer embedded permanent magnets have severe problems regarding force ripples and detent force, which affect the DD-WEC’s dynamics. Therefore, a DD-WEC system with MI-TLPMGs is proposed, and the effect of the detent force on the dynamic performance of the DD-WEC is analyzed theoretically. Then, the L-type auxiliary teeth and magnetic barriers, which are optimized by the Taguchi method, are introduced to minimize the detent force of the MI-TLPMGs. After optimization using the Taguchi method, the amplitude of the detent force is reduced from the initial 21.7 N to 5.2 N, which means it has weakened by nearly 76.1%. Finally, a prototype has been manufactured and measured in the wave tank to verify the optimization results.

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27

Yi, Jian Hong, Li Ya Li, and Yuan Dong Peng. "Magnetic Properties and Microstructure of Sm₂Co₁₇-Based High Temperature Permanent Magnet." Materials Science Forum 534-536 (January 2007): 1341–44. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1341.

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The coercivity of Sm2Co17-based permanent magnets at high operating temperature gradually increased with increasing Cu and Zr content, but decreased as the Fe content increased. The magnet Sm(Co0.7Fe0.1Cu0.16Zr0.04)6.7 that was studied had a room temperature intrinsic coercivity of about 30 kOe. For this magnet, the temperature coefficient of coercivity RT − 500 o C β and Hci at 500oC are -0.148%/oC and 8.6kOe. The magnet is composed mainly by 2:17R cell interior, 1:5 cell boundary phase, as well as 2:17H lamellar phase. There is a maze-like domain structure in the magnet. The HRXRD evidence shows that the phase transformation at high temperature leads to the degraded magnetic properties of the magnets.

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28

Yamazaki, Katsumi, and Kazuya Kitayuguchi. "Optimization of Magnet Arrangement in Double-Layer Interior Permanent-Magnet Motors." IEEJ Transactions on Industry Applications 131, no. 11 (2011): 1316–23. http://dx.doi.org/10.1541/ieejias.131.1316.

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29

Yamazaki, Katsumi, and Kazuya Kitayuguchi. "Optimization of magnet arrangement in double-layer interior permanent-magnet motors." Electrical Engineering in Japan 183, no. 4 (April 11, 2013): 54–63. http://dx.doi.org/10.1002/eej.22348.

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30

Zheng, Junqiang, Wenxiang Zhao, Christopher H. T. Lee, Jinghua Ji, and Gaohong Xu. "Improvement torque performances of interior permanent-magnet machines." CES Transactions on Electrical Machines and Systems 3, no. 1 (March 2019): 12–18. http://dx.doi.org/10.30941/cestems.2019.00003.

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31

Naoe, Nobuyuki. "Voltage Regulation Performance of Interior Permanent-Magnet Generator." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 35, no. 5 (2000): 296–301. http://dx.doi.org/10.5988/jime1966.35.296.

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32

TAKAHARA, Kazuaki, Katsuhiro HIRATA, and Noboru NIGUCHI. "Performance of Interior Permanent Magnet Spherical Synchronous Actuator." Journal of the Japan Society of Applied Electromagnetics and Mechanics 26, no. 2 (2018): 298–304. http://dx.doi.org/10.14243/jsaem.26.298.

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33

PERERA, B. S. P., and M. F. ISLAM. "INTERIOR PERMANENT MAGNET MOTOR HAVING SEVERAL IMPROVED FEATURES." Electric Machines & Power Systems 25, no. 10 (December 1997): 1135–43. http://dx.doi.org/10.1080/07313569708955802.

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34

Parsa, Leila, and Lei Hao. "Interior Permanent Magnet Motors With Reduced Torque Pulsation." IEEE Transactions on Industrial Electronics 55, no. 2 (2008): 602–9. http://dx.doi.org/10.1109/tie.2007.911953.

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35

Soong, W. L., and N. Ertugrul. "Field-weakening performance of interior permanent-magnet motors." IEEE Transactions on Industry Applications 38, no. 5 (September 2002): 1251–58. http://dx.doi.org/10.1109/tia.2002.803013.

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36

Rahman, M. A., D. M. Vilathgamuwa, M. N. Uddin, and King-Jet Tseng. "Nonlinear control of interior permanent-magnet synchronous motor." IEEE Transactions on Industry Applications 39, no. 2 (March 2003): 408–16. http://dx.doi.org/10.1109/tia.2003.808932.

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37

Soong, W. L., and N. Ertugrul. "Inverterless High-Power Interior Permanent-Magnet Automotive Alternator." IEEE Transactions on Industry Applications 40, no. 4 (July 2004): 1083–91. http://dx.doi.org/10.1109/tia.2004.830773.

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38

Yu, Shen Bo, Lei Li, and Shen Cao. "Modal Analysis of Stator and Rotor in Large Capacity Permanent Magnet Motor." Applied Mechanics and Materials 313-314 (March 2013): 41–44. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.41.

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This paper presents the modal analysis of stator and rotor in large capacity permanent magnet motor with exterior rotor. Modal analysis of motor has vital significant to suppress vibration and noise of the motor in operating. Models of stator and rotor in motor with exterior rotor are analyzed by finite element method. Calculation results of different models indicate that the laminations and windings in large capacity permanent magnet motor have substantial effect on natural frequencies and vibration shapes of stator of the motor. Magnets on interior surface in the exterior rotor have some influence on the modal of the rotor.

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39

Morimoto, Shigeo, and Yoji Takeda. "Machine Parameters and Performances of Interior Permanent Magnet Synchronous Motors with Different Permanent Magnet Volume." IEEJ Transactions on Industry Applications 118, no. 12 (1998): 1403–8. http://dx.doi.org/10.1541/ieejias.118.1403.

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40

Xia, Changliang, Liyan Guo, Zhen Zhang, Tingna Shi, and Huimin Wang. "Optimal Designing of Permanent Magnet Cavity to Reduce Iron Loss of Interior Permanent Magnet Machine." IEEE Transactions on Magnetics 51, no. 12 (December 2015): 1–9. http://dx.doi.org/10.1109/tmag.2015.2451105.

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41

Morimoto, Shigeo, and Yoji Takeda. "Machine parameters and performance of interior permanent magnet synchronous motors with different permanent magnet volume." Electrical Engineering in Japan 131, no. 4 (June 2000): 70–77. http://dx.doi.org/10.1002/(sici)1520-6416(200006)131:4<70::aid-eej9>3.0.co;2-r.

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42

Ki-Chan Kim, Kwangsoo Kim, Hee Jun Kim, and Ju Lee. "Demagnetization Analysis of Permanent Magnets According to Rotor Types of Interior Permanent Magnet Synchronous Motor." IEEE Transactions on Magnetics 45, no. 6 (June 2009): 2799–802. http://dx.doi.org/10.1109/tmag.2009.2018661.

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43

Li, Bing, and Ming Li. "Calculation and Analysis of Permanent Magnet Eddy Current Loss Fault with Magnet Segmentation." Mathematical Problems in Engineering 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/7308631.

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This paper investigates the problem of calculating and analyzing the effect of the permanent magnet eddy current loss fault due to magnet segmentation. Taking an interior permanent magnet synchronous motor with inverter supplied as an example, the rated power of motor was 2.2 kW. Three-dimensional finite-element model was firstly established based on finite-element software. Then, the model mesh and boundary conditions were handled specially; permanent magnet eddy current loss fault was calculated and analyzed theoretically with magnet segmentation from space harmonic and time harmonic, respectively. Finally, calculation results were compared and explained. A useful conclusion for permanent magnet synchronous motor design has been obtained.

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44

Oka, T., S. Hasebe, J. Ogawa, S. Fukui, T. Nakano, N. Sakai, M. Miryala, M. Murakami, and K. Yokoyama. "Novel magnetizing technique using high temperature superconducting bulk magnets for permanent magnets in interior permanent magnet rotors." Superconductor Science and Technology 33, no. 8 (June 29, 2020): 084003. http://dx.doi.org/10.1088/1361-6668/ab9543.

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45

Lee, Young-Geun, Tae-Kyoung Bang, Jeong-In Lee, Jong-Hyeon Woo, Sung-Tae Jo, and Jang-Young Choi. "Characteristic Analysis and Experimental Verification of Electromagnetic and Vibration/Noise Aspects of Fractional-Slot Concentrated Winding IPMSMs of e-Bike." Energies 15, no. 1 (December 30, 2021): 238. http://dx.doi.org/10.3390/en15010238.

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In this study, we performed the electromagnetic and mechanical characteristic analyses of an 8-pole 12-slot interior permanent magnet synchronous motor (IPMSM). Permanent magnet synchronous motors are classified into surface permanent magnet synchronous motor and interior permanent magnet synchronous motors according to the type of rotor. The IPM type is advantageous for high-speed operation because of the structure where the permanent magnet is embedded inside the rotor, and it has the advantage of having a high output density by generating not only the magnetic torque of the permanent magnet, but also the reluctance torque. However, such a motor has more vibration/noise sources than other types, owing to changes in reluctance. The sources of motor noise/vibration can be broadly classified into electromagnetic, mechanical, and aerodynamic sources. Electromagnetic noise sources are classified into electromagnetic excitation sources, torque pulsations, and unbalanced magnetic forces (UMFs). Vibration and noise cause machine malfunctions and affect the entire system. Therefore, it is important to analyze the electromagnetic vibration source. In this study, the electromagnetic characteristics of an IPMSM were analyzed through the finite element method to derive the UMF. Vibration and noise analyses were performed by electromagnetic–mechanical coupling analysis, and vibration and noise characteristics based on electromagnetic noise sources were analyzed.

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46

Et.al, Ho-Joon Lee. "A Study on The Fully Enclosed Housing Of Interior Permanent Magnet Synchronous Motor." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 6 (April 10, 2021): 687–91. http://dx.doi.org/10.17762/turcomat.v12i6.2071.

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Approximately 2.5 billion won can be saved every year by replacing existing induction motors, which are traction motors for urban railway vehicles, with permanent magnet motors. This paper presents a study on the structural design of a completely enclosed motor to commercialize an interior permanent-magnet synchronous motor (IPMSM) for the traction of urban railway vehicles. The proposed solution provides protection from an inflow of dust and magnetic powder into the rotor that can deteriorate the motor performance and cause burnout. In addition, unless it is a water-cooled or oil-cooled structure, cooling of an electric motor used in medium and large-sized equipment is not easily accomplished. However, completely enclosed motors are vulnerable to overheating; therefore, research into housing design is required to provide cooling. Additionally, the permissible current density through the stator winding must be considered in the design to prevent the occurrence of thermal demagnetization of permanent magnets. Furthermore, IPMSMs require a separate driver for operation and speed controls for a wide range of operating conditions such as rail traction. Thus, a study has been conducted on IPMSMs and other related driver and control technologies, and their suitability has been validated through performance tests.

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Hane, Y., Y. Uchiyama, and K. Nakamura. "Reluctance Network Model of Interior Permanent Magnet Motor with Polar Anisotropic Magnet." Journal of the Magnetics Society of Japan 45, no. 5 (September 1, 2021): 125–30. http://dx.doi.org/10.3379/msjmag.2109r002.

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Lee, Christopher, Matthew Angle, Krishan Bhalla, Mohammad Qasim, Jie Mei, Sajjad Mohammadi, K. Iyer, Jasmin Sinkular, and James Kirtley. "Quantitative Comparison of Vernier Permanent-Magnet Motors with Interior Permanent-Magnet Motor for Hybrid Electric Vehicles." Energies 11, no. 10 (September 24, 2018): 2546. http://dx.doi.org/10.3390/en11102546.

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In this paper, three Vernier permanent-magnet (VPM) motor, namely the inner-rotor VPM (IR-VPM) motor, the outer-rotor VPM (OR-VPM) motor and the OR consequent-pole VPM (OR-CP-VPM) motor are proposed for the hybrid electric vehicle (HEV) applications. Owing to employment of toroidal-winding arrangement, the OR-VPM and the OR-CP-VPM motors can enjoy better material utilization and easier manufacturing process than its IR-VPM counterpart. Meanwhile the OR-CP-VPM motor can utilize the consequent-pole topology to minimize flux leakage that exists in conventional design. With the support of finite element method (FEM), the motor performances among the VPM motors and the profound interior permanent-magnet (IPM) motor can be compared quantitatively.

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Hong, Seung Geon, and Il Han Park. "Continuum-Sensitivity-Based Optimization of Interior Permanent Magnet Synchronous Motor With Shape Constraint for Permanent Magnet." IEEE Transactions on Magnetics 56, no. 2 (February 2020): 1–4. http://dx.doi.org/10.1109/tmag.2019.2945571.

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Ogbuka, Cosmas, Cajethan Nwosu, and Marcel Agu. "Dynamic and steady state performance comparison of line-start permanent magnet synchronous motors with interior and surface rotor magnets." Archives of Electrical Engineering 65, no. 1 (March 1, 2016): 105–16. http://dx.doi.org/10.1515/aee-2016-0008.

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Abstract A comprehensive comparison of the dynamic and steady state performance characteristics of permanent magnet synchronous motors (PMSM) with interior and surface rotor magnets for line-start operation is presented. The dynamic model equations of the PMSM, with damper windings, are utilized for dynamic studies. Two typical loading scenarios are examined: step and ramp loading. The interior permanent magnet synchronous motor (IPMSM) showed superior asynchronous performance under no load, attaining faster synchronism compared to the surface permanent magnet synchronous motor (SPMSM). With step load of 10 Nm at 2 s the combined effect of the excitation and the reluctance torque forced the IPMSM to pull into synchronism faster than the SPMSM which lacks saliency. The ability of the motors to withstand gradual load increase, in the synchronous mode, was examined using ramp loading starting from zero at 2 s. SPMSM lost synchronism at 12 s under 11 Nm load while the IPMSM sustained synchronism until 41 seconds under 40 Nm load. This clearly suggests that the IPMSM has superior load-withstand capability. The superiority is further buttressed with the steady state torque analysis where airgap torque in IPMSM is enhanced by the reluctance torque within 90° to 180° torque angle.

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