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Journal articles on the topic 'Fractional Slot winding SyR'

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Author: Grafiati

Published: 14 March 2023

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1

Wang, Xiu Ping, Chun Yu Qu, Rui Guo, and Jun You Zhao. "Performance Analysis of Novel Fractional-Slot Concentrated-Winding Permanent Magnet Machine with Different Pole and Slot Matching." Applied Mechanics and Materials 668-669 (October 2014): 625–28. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.625.

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In order to analyze the possibility of the fractional-slot concentrated-winding for wind generation, this paper states the merits of fractional-slot concentrated-winding permanent magnet machines, and then analyzes the electromagnetic design rules of fractional-slot concentrated-winding. The fractional-slot concentrated-winding permanent magnet machine is modeled and designed in electromagnetic, and its performance is analyzed, some conclusions can be obtained, which will provide reference for further analysis and application of fractional-slot concentrated-winding PM machine.

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2

Wu, Chuan Guo, Jian Zhong Zhang, Yu Ting Chen, and Ming Cheng. "Comparison Study of Tubular Linear Surface-Mounted Permanent Magnet Actuator with Different Fractional Slot Winding." Applied Mechanics and Materials 416-417 (September 2013): 281–86. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.281.

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There are many slot/pole combinations may be selected for the fractional slot tubular linear surface-mounted motors (TLSPM) used as actuators for high voltage breakers, such as 15/8, 15/4, 15/2, 12/8. Compared with integral slot winding, the fractional slot winding has more advantages. Since the winding arrangement will be changed due to the different slot/pole numbers. The characteristics of the TLSPM with different fractional slot, such as detent force, back EMF, are analyzed and compared in this paper. It is shown that good performance may be achieved by selecting appropriate fractional slot design.

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3

Wang, Xiu Ping, and Chun Yu Qu. "On the Possibility of Fractional-Slot Concentrated-Winding Permanent Magnet Machine for Wind Power Generation." Advanced Materials Research 945-949 (June 2014): 2858–62. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2858.

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In order to obtain the low synchronous speed, fractional slot concentrated winding is adopted in generation system. This paper analyzed the pole/slot combination rule, and studied the electromagnetic design method. By the finite element software, the characteristics is analyzed for this fractional-slot concentrated-winding permanent magnet generator, the result shows that this generator has a good performance, thus yet proves that fractional slot concentrated winding scheme is feasible.

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4

Wang, Xiu Ping, Chun Yu Qu, Xiao Feng Xu, and Dong Rui Wang. "Design and Analysis of Fractional-Slot Concentrated-Winding Permanent Magnet Machine for Wind Power Generation." Applied Mechanics and Materials 668-669 (October 2014): 611–14. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.611.

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In order to obtain the low synchronous speed, fractional-slot concentrated-winding PM machine is adopted to wind power generation system. This paper analyzed the pole slot combination rule, and then studied the electromagnetic design method by taking 12-slot and 10-pole machine. By using the finite element software, the characteristics is analyzed for this fractional-slot concentrated-winding permanent magnet generator, the research results show that this generator has good performance, thus prove that fractional-slot concentrated-winding scheme is feasible and effective.

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5

Liu, Guang Qi. "Investigation on Slot/Pole Number Combinations for PMSM with Concentrated Fractional Slot Winding." Advanced Engineering Forum 2-3 (December 2011): 512–18. http://dx.doi.org/10.4028/www.scientific.net/aef.2-3.512.

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Five features of slot number-phase table of cell motor are deeply discussed in this paper. Then it is derived that four constraints of cell motor with fractional slot winding and two additional constraints of cell motor with concentrated fractional slot winding. Finally, the equivalent calculation of spread factor of fractional slot motor and integral slot motor is proposed by use of the dummy motor. Because Slot number-phase table is brought in, the method proposed by this paper is convenient to carry out automatic analysis and calculation by computer.

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6

Vialcev, Georgy B., Dmitriy M. Toporkov, and Olga E. Gubareva. "Investigation of Winding Circuit Effect on Characteristics of Permanent Magnet Synchronous Machines with Fractional Slot Concentrated Winding." Applied Mechanics and Materials 698 (December 2014): 30–34. http://dx.doi.org/10.4028/www.scientific.net/amm.698.30.

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Star-connected and delta-connected circuits of fractional slot concentrated winding in permanent magnets synchronous machines (SMPM) are described in the paper. Advantages and drawbacks of these winding circuit types are shown. Investigation results on the characteristics degradation in the machines with fractional slot concentrated windings owing to delta-connected circuit are presented.

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7

Yokoi, Yuichi, Tsuyoshi Higuchi, and Yasuhiro Miyamoto. "General formulation of winding factor for fractional‐slot concentrated winding design." IET Electric Power Applications 10, no. 4 (April 2016): 231–39. http://dx.doi.org/10.1049/iet-epa.2015.0092.

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8

Laksar, Jan, Lukáš Veg, and Roman Pechánek. "Challenges in Winding Design and Thermal Calculations: Physical Model of Permanent Magnet Synchronous Machine." Machines 9, no. 10 (October 13, 2021): 234. http://dx.doi.org/10.3390/machines9100234.

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Interest in multilayer windings is increasing with the application of the hairpin winding technology to the manufacturing of electrical machines. Therefore, the four-layer fractional slot concentrated winding is used for the initial design of the machine in this paper. The proposed physical model of the machine uses winding with a relatively high number of turns which is inappropriate to hairpin winding. Therefore the round-wire winding is created and the three-layer winding is derived and analyzed including the effect on the slot leakage inductance. The thermal analysis is then applied to the physical model of the machine to evaluate the slot-related thermal properties of the slot and the whole machine. The measurement is compared with the finite element analysis (FEA) and the equivalent slot thermal conductivity and heat transfer coefficients of the stator and rotor are obtained.

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9

Mohd Jamil, Mohd Luqman, Zulfikri Zaki Zolkapli, Auzani Jidin, Raja Nor Firdaus Raja Othman, and Tole Sutikno. "Electromagnetic Performance due to Tooth-tip Design in Fractional-slot PM Brushless Machines." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 4 (December 1, 2015): 860. http://dx.doi.org/10.11591/ijpeds.v6.i4.pp860-868.

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Permanent Magnet (PM) machines are favorable as an alternative to other machine topologies due to simpler construction and high torque density. However, it may result hight torque ripple due to an influence of cogging torque and electronic commutation. In this paper, comparisons of phase back-emf, static torque and cogging torque due to influence of tooth-tip asymmetry in 12-slot/10-pole double-layer and 12-slot/10-pole single layer winding machines are carried out using 2D Finite-Element Analysis. At rated condition, the stator asymmetry has great influence on the torque performance as there is significant reduction of torque ripple in 12-slot/10-pole mahine equipped with single layer winding than one equipped with double layer winding machine. It si confirmed that an optimum torque performance is desirable via stator iron modification in PM machines.

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10

Boglietti, Aldo, Marco Cossale, Silvio Vaschetto, and Thiago Dutra. "Thermal Conductivity Evaluation of Fractional-Slot Concentrated-Winding Machines." IEEE Transactions on Industry Applications 53, no. 3 (May 2017): 2059–65. http://dx.doi.org/10.1109/tia.2017.2672518.

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11

Jedryczka, Cezary, Wojciech Szelag, and Zbigniew Jerry Piech. "Multiphase permanent magnet synchronous motors with fractional slot windings." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 35, no. 6 (November 7, 2016): 1937–48. http://dx.doi.org/10.1108/compel-03-2016-0120.

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Purpose The purpose of this paper is to investigate advantages of multiphase permanent magnet synchronous motors (PMSM) with fractional slot concentrated windings (FSCW). The investigation is based on comparative analysis and assessment of FSCW PMSM wound as 3, 6, 9 and 12 phase machines suited for low speed applications. Design/methodology/approach The investigations are focussed on distortions of back electromotive (emf) and magnetomotive force (mmf) with the torque ripples and motors’ performance taken into account. The finite element models with the aid of customized computer code have been adopted for motor winding design and back emf, mmf and motor performance analyses. Findings The novel multiphase winding layouts were found to offer lower content of sub-harmonics in the mmf waveforms compared with the traditional three-phase machine designs. Moreover, the investigated multiphase machines exhibited higher average value of the electromagnetic torque, while the multiphase PMSM machines with FSCW were further characterized by significantly lower torque pulsations. Originality/value The analyses presented in this paper demonstrate that PMSM with FSCW are advantageous to their counterpart three-phase machines. Specifically, they offer higher performance and are more suitable to work with multiple drives supplying segmented winding system. This ability of using multi-drive supply for one motor offers flexibility and cost reduction while increasing fault tolerant power train system.

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12

Islam, Md Sariful, Md Ashfanoor Kabir, Rajib Mikail, and Iqbal Husain. "Space-Shifted Wye–Delta Winding to Minimize Space Harmonics of Fractional-Slot Winding." IEEE Transactions on Industry Applications 56, no. 3 (May 2020): 2520–30. http://dx.doi.org/10.1109/tia.2020.2975766.

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13

Prieto, Borja, Miguel Martinez-Iturralde, Luis Fontan, and Ibon Elosegui. "Analytical Calculation of the Slot Leakage Inductance in Fractional-Slot Concentrated-Winding Machines." IEEE Transactions on Industrial Electronics 62, no. 5 (May 2015): 2742–52. http://dx.doi.org/10.1109/tie.2014.2362094.

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14

Sulaiman, Farina, R. N. Firdaus, M. S. Ahmad, A. Jidin, and T. Sutikno. "Winding Arrangement of A New Type Hollow Rotor BLDC Motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 3 (September 1, 2018): 933. http://dx.doi.org/10.11591/ijpeds.v9.i3.pp933-946.

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This paper discusses about winding arrangement of fractional slot of a new type hollow rotor Brushless Direct Current (BLDC) motor. Hollow rotor has higher performance compared to other BLDC motor because it minimizes the unused flux below permanent magnet and maximize torque produce by the motor. It’s also known that 8 pole motor is favorite used in industrial because it has an optimum space of permanent magnet for a smaller motor size. The number of pole will affect the maximum speed of the rotor. Thus, the objective of this research is to investigate the best winding arrangement for 8 pole of hollow rotor that could produce the highest electromagnetic performance. At starts, four combinations of slot number and coil sizes had been selected. Structural comparison in term of coil vector and winding arrangement is studied. Finite Element Method (FEM) had been used to simulate the parameters such as backemf and torque waveforms. It was convinced that 9 slot 8 pole with 0.6 size of coil produces the best performance. The confirmed model had been fabricated and measured. Both results from FEM and measurement are compared in term of backemf and torque where percentage differences are 7.4 % and 8 %, respectively. As conclusion, this research shows the fundamental of winding arrangement of fractional slot of motor especially 8 pole motor.

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15

Wang, Jiabin. "Performance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics." Archives of Electrical Engineering 64, no. 4 (December 1, 2015): 655–68. http://dx.doi.org/10.1515/aee-2015-0049.

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Abstract This paper evaluates the perforamnce of fractional-slot per pole winding configurations for tubular permanent magnet (PM) machines that can effectively eliminate the most undesirable space harmonics in a simple and cost-effective manner. The benefits of the proposed machine topology winding configurations are illustrated through comparison with 9-slot, 10-pole tubular PM machine developed for a free piston energy converter under the same specification and volumetric constraints. It has been shown that the proposed machine topology results in more than 7 times reduction in the eddy current loss in the mover magnets and supporting tube, and hence avoids potential problem of excessive mover temperature and risk of demagnetization.

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16

Dutta, R., M. F. Rahman, and L. Chong. "Winding Inductances of an Interior Permanent Magnet (IPM) Machine With Fractional Slot Concentrated Winding." IEEE Transactions on Magnetics 48, no. 12 (December 2012): 4842–49. http://dx.doi.org/10.1109/tmag.2012.2203140.

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17

Abdel-Khalik, Ayman Samy, Shehab Ahmed, and Ahmed M. Massoud. "Low Space Harmonics Cancelation in Double-Layer Fractional Slot Winding Using Dual Multiphase Winding." IEEE Transactions on Magnetics 51, no. 5 (May 2015): 1–10. http://dx.doi.org/10.1109/tmag.2014.2364988.

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18

Kang, Huilin, Libing Zhou, and Jin Wang. "Harmonic Winding Factors and MMF Analysis for Five-phase Fractional-slot Concentrated Winding PMSM." Journal of international Conference on Electrical Machines and Systems 3, no. 1 (March 1, 2014): 20–26. http://dx.doi.org/10.11142/jicems.2014.3.1.20.

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19

Tsuboi, Kazuo, and Isao Hirotsuka. "Abnormal starting phenomena of a fractional slot winding induction motor." IEEJ Transactions on Power and Energy 106, no. 7 (1986): 587–94. http://dx.doi.org/10.1541/ieejpes1972.106.587.

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20

Zhao, Weiduo, Shaopeng Wu, Shumei Cui, Chris Gerada, He Zhang, and Zhuang Xu. "A Fractional Slot Multiphase Air-Core Compulsator With Concentrated Winding." IEEE Transactions on Plasma Science 45, no. 7 (July 2017): 1387–93. http://dx.doi.org/10.1109/tps.2017.2705243.

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21

Bianchi, N., S. Bolognani, M. D. Pre, and G. Grezzani. "Design considerations for fractional-slot winding configurations of synchronous machines." IEEE Transactions on Industry Applications 42, no. 4 (July 2006): 997–1006. http://dx.doi.org/10.1109/tia.2006.876070.

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22

Si, Meng, and Ying Li Yang. "The Influence of Pole-Slot Match on Magnetomotive Force with Concentrated Fractional-Slot Winding." Applied Mechanics and Materials 397-400 (September 2013): 1209–13. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1209.

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Magnetic field, produced by magnetomotive force (MMF) harmonic waves, is harmful to motors, by reducing efficiency of motors, resulting in demagnetization of permanent magnets and so on. It is also responsible for the increase of eddy current loss and the rise of temperature of rotors. Thus, research on the influence of pole-slot match on MMF with concentrated fractional-slot winding is necessary. This paper aims at researching unit motors with different cooperation of slots and poles. First, basic principle of MMF is described. Then, with different kinds of unit motors, MMF of harmonic waves is analyzed. Based on these analyses, distributive regularities are summarized.

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23

Li, Dawei, Tianjie Zou, Ronghai Qu, and Dong Jiang. "Analysis of Fractional-Slot Concentrated Winding PM Vernier Machines With Regular Open-Slot Stators." IEEE Transactions on Industry Applications 54, no. 2 (March 2018): 1320–30. http://dx.doi.org/10.1109/tia.2017.2778686.

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24

Haouas, Elyes, Imen Abdennadher, and Ahmed Masmoudi. "Multi-Phase Fractional-Slot PM Synchronous Machines with Enhanced Open-Circuit Fault-Tolerance: Viable Candidates for Automotive Applications." World Electric Vehicle Journal 12, no. 1 (February 20, 2021): 32. http://dx.doi.org/10.3390/wevj12010032.

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This paper deals with the winding arrangement of multi-phase fractional-slot permanent magnet (PM) synchronous machines (FSPMSMs), with emphasis on the enhancement of their open-circuit fault-tolerance capability. FSPMSMs are reputed by their attractive intrinsic fault-tolerance capability, which increases with the number of phases. Of particular interest is the open-circuit fault-tolerance capability, which could be significantly enhanced through the parallel connection of the coils or suitable combinations of the coils of each phase. Nevertheless, such an arrangement of the armature winding is applicable to a limited set of slot-pole combinations. The present work proposes a design approach that extends the slot-pole combinations to candidates that are characterized by a star of slots including three phasors per phase and per winding period. It has the merit of improving the tolerance against open-circuit faults along with an increase in the winding factor of multi-phase machines. Special attention is paid to characterization of the coil asymmetry required for the phase parallel arrangement. A case study, aimed at a finite element analysis (FEA)-based investigation of the open-circuit fault-tolerance of a five-phase FSPMSM, is treated in order to validate the analytical prediction.

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25

Le Besnerais, Jean, Vincent Lanfranchi, Michel Hecquet, Pascal Brochet, and Guy Friedrich. "Acoustic noise of electromagnetic origin in a fractional‐slot induction machine." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 27, no. 5 (September 12, 2008): 1033–52. http://dx.doi.org/10.1108/03321640810890753.

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PurposeThe purpose of this paper is to apply a fast analytical model of the acoustic behaviour of pulse‐width modulation (PWM) controlled induction machines to a fractional‐slot winding machine, and to analytically clarify the interaction between space harmonics and time harmonics in audible electromagnetic noise spectrum.Design/methodology/approachA multilayer single‐phase equivalent circuit calculates the stator and rotor currents. Air‐gap radial flux density, which is supposed to be the only source of acoustic noise, is then computed with winding functions formalism. Mechanical and acoustic models are based on a 2D ring stator model. A method to analytically derive the orders and frequencies of most important vibration lines is detailed. The results are totally independent of the supply strategy and winding type of the machine. Some variable‐speed simulations and tests are run on a 700 W fractional‐slot induction machine in sinusoidal case as a first validation of theoretical results.FindingsThe influence of both winding space harmonics and PWM time harmonics on noise spectrum is exposed. Most dangerous orders and frequencies expressions are demonstrated in sinusoidal and PWM cases. For traditional integral windings, it is shown that vibration orders are necessarily even. When the stator slot number is not even, which is the case for fractional windings, some odd order deflections appear: the radial electromagnetic power can therefore dissipate as vibrations through all stator deformation modes, leading to a potentially lower noise level at resonance.Research limitations/implicationsThe analytical research does not consider saturation and eccentricity harmonics which can play a significant role in noise radiation.Practical implicationsThe analytical model and theoretical results presented help in designing low‐noise induction machines, and diagnosing noise or vibration problems.Originality/valueThe paper details a fully analytical acoustic and electromagnetic model of a PWM fed induction machine, and demonstrate the theoretical expression of main noise spectrum lines combining both time and space harmonics. For the first time, a direct comparison between simulated and experimental vibration spectra is made.

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26

Korneev, Vyacheslav, Alexander Pristup, and Olga E. Gubareva. "Winding Factor of Permanent Magnet Synchronous Machines with Fractional Slot Concentrated Windings." Applied Mechanics and Materials 698 (December 2014): 73–76. http://dx.doi.org/10.4028/www.scientific.net/amm.698.73.

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The use of fractional slot concentrated windings in electrical machines has a variety of advantages. A winding factor is one of the most important parameter which is necessary for electrical machines designing and modeling.

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27

Mohd Jamil, Mohd Luqman, Syed Muhammad S. A. Al-Habshi, Md Nazri Othman, and Tole Sutikno. "Performance of Fractional-Slot Winding PM Machines due to Un-even Coil Turns and Asymmetric Design of Stator Teeth." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 4 (December 1, 2015): 853. http://dx.doi.org/10.11591/ijpeds.v6.i4.pp853-859.

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PM machines in which slot number and pole number combination differs by one have to be configured with asymmetric winding pattern in order to maximize it back-emf performance. However, this asymmetric winding configuration inherently results an unwanted Unabalanced Magnetic Force (UMF). Investigations of electromagnetic performance of fractional-slot asymmetric winding PM machines using 2-D Finite-Element Analysis are presented. The investigations are mainly driven by the effort of minimizing the UMF. By employing techniques such as non-uniform number of coil turns in every tooth and asymmetric design of stator tooth, the UMF are expected can be minimized. The investigations show that the radial component of UMF has greater effect than the tangential component on the UMF itself. In all proposed techniques, a slight reduction of machine torque performance is inevitable.

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28

Akatsu, Kan, and Shinji Wakui. "A Design Method of Fractional-Slot Concentrated Winding SPMSM Using Winding factor and Inductance factor." IEEJ Transactions on Industry Applications 127, no. 11 (2007): 1171–79. http://dx.doi.org/10.1541/ieejias.127.1171.

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29

Yang, Qifan, Xiaoke Liu, Yue Yang, Rong Cao, Wenbo Hao, Mingyu Xu, and Feng Zhou. "Performance analysis of low-speed and large-thrust cylindrical linear motor with double-layer fractional-slot winding." MATEC Web of Conferences 336 (2021): 02021. http://dx.doi.org/10.1051/matecconf/202133602021.

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For low-speed and large-thrust situations, the single-layer winding permanent magnet linear motor is inefficient because of its large distance, and the thrust fluctuation is large. In order to solve this problem, a finite element analysis model of cylindrical permanent magnet linear motor is established in a cylindrical permanent magnet linear motor, and the Ansoft software simulation is used to ensure the positioning force and thrust of the double-layer winding motor and single-layer winding motor under the same key parameters. The performance of double-layer winding motor and Single-layer winding motor at different frequencies is compared and analyzed. The simulation results show that the cylindrical linear motor with double-layer fractional-slot winding structure is more suitable for occasions with low speed and large thrust, and has higher operation efficiency.

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30

Seo, Un-Jae, Yon-Do Chun, Jae-Hak Choi, Shi-Uk Chung, Pil-Wan Han, and Dae-Hyun Koo. "General Characteristic of Fractional Slot Double Layer Concentrated Winding Synchronous Machine." Journal of Electrical Engineering and Technology 8, no. 2 (March 1, 2013): 282–87. http://dx.doi.org/10.5370/jeet.2013.8.2.282.

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31

Dmitrievskii, Vladimir, Vladimir Prakht, and Vadim Kazakbaev. "IE5 Energy-Efficiency Class Synchronous Reluctance Motor With Fractional Slot Winding." IEEE Transactions on Industry Applications 55, no. 5 (September 2019): 4676–84. http://dx.doi.org/10.1109/tia.2019.2924405.

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32

EL‐Refaie, Ayman M., Z. Q. Zhu, Thomas M. Jahns, and David Howe. "Winding inductances of fractional slot surface‐mounted permanent magnet brushless machines." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 28, no. 6 (November 13, 2009): 1590–606. http://dx.doi.org/10.1108/03321640910999888.

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33

Sarigiannidis, Athanasios G., Minos E. Beniakar, Panagiotis E. Kakosimos, Antonios G. Kladas, Luca Papini, and Chris Gerada. "Fault Tolerant Design of Fractional Slot Winding Permanent Magnet Aerospace Actuator." IEEE Transactions on Transportation Electrification 2, no. 3 (September 2016): 380–90. http://dx.doi.org/10.1109/tte.2016.2574947.

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34

Salminen, P., T. Jokinen, and J. Pyrhönen. "Pull-out torque of fractional-slot PM-motors with concentrated winding." IEE Proceedings - Electric Power Applications 152, no. 6 (2005): 1440. http://dx.doi.org/10.1049/ip-epa:20050175.

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35

Fan, Xinggang, Bin Zhang, Ronghai Qu, Dawei Li, Jian Li, and Yongsheng Huo. "Comparative Thermal Analysis of IPMSMs With Integral-Slot Distributed-Winding (ISDW) and Fractional-Slot Concentrated-Winding (FSCW) for Electric Vehicle Application." IEEE Transactions on Industry Applications 55, no. 4 (July 2019): 3577–88. http://dx.doi.org/10.1109/tia.2019.2903187.

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36

Chen, Qixu, Guoli Li, Zhe Qian, Wenping Cao, and Qunjing Wang. "Analysis of winding MMF of PMSM with multi-phase and multi-layer layout using holospectrum method." International Journal of Applied Electromagnetics and Mechanics 68, no. 4 (April 8, 2022): 387–403. http://dx.doi.org/10.3233/jae-210025.

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A holographic spectrum method (HSM) of multi-phase and multi-layer winding magnetomotive force (MMF) for 12-slot/10-pole combination with fractional-slot concentrated-winding (FSCW) is proposed in this paper. Taking two kinds of traditional winding layout as example, amplitude and phase distribution of the vth harmonic are calculated. The holospectrum of the multi-phase and multi-layer winding are derived based on three-phase single-layer (TP-SL) and three-phase double-layer (TP-DL) holospectrum theory. Then the finite element method (FEM) is used to validate the resultant winding MMF calculated by the holospectrum method. Results show that two methods have a good consistency in changing tendency. Prototype manufacture and test of axial-flux PMSM with a double-three-phase four-layer (DTP-FL) winding have been completed. A load experiment with two groups of resistance is established to validate its output power of axial-flux permanent magnet synchronous machine (PMSM). The temperature distribution of axial-flux PMSM is evaluated with PT100 and infrared thermal imager. The experiments shows that the axial-flux PMSM runs at a relative temperature rise.

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37

Kim, Byungtaek. "Investigation on Slot–Pole Combinations of a PM Vernier Motor with Fractional-Slot Concentrated Winding Configurations." Energies 10, no. 9 (September 1, 2017): 1310. http://dx.doi.org/10.3390/en10091310.

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38

Barcaro, Massimo, Nicola Bianchi, and Freddy Magnussen. "Six-Phase Supply Feasibility Using a PM Fractional-Slot Dual Winding Machine." IEEE Transactions on Industry Applications 47, no. 5 (September 2011): 2042–50. http://dx.doi.org/10.1109/tia.2011.2161859.

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39

Alipour-Sarabi, Ramin, Zahra Nasiri-Gheidari, Farid Tootoonchian, and Hashem Oraee. "Analysis of Winding Configurations and Slot-Pole Combinations in Fractional-Slots Resolvers." IEEE Sensors Journal 17, no. 14 (July 15, 2017): 4420–28. http://dx.doi.org/10.1109/jsen.2017.2707523.

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40

Wang, Aimeng, and Shanshan Li. "Investigation of E-Core Modular Permanent Magnet Wind Turbine." Energies 13, no. 7 (April 6, 2020): 1751. http://dx.doi.org/10.3390/en13071751.

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Under the adverse trend of fossil energy attenuation and air pollution, wind power effectively alleviates the global energy crisis and environmental pollution. For wind turbines, especially large offshore wind turbines, their transportation, installation, and maintenance are very inconvenient. In order to solve this problem, this paper presents an E-core stator modular machine which inserts stator gap into the unwounded teeth of the fractional-slot concentrated winding (FSCW) permanent magnet (PM) machine. The winding factor of the new stator structure machine was derived. The electromagnetic models of 12-slot/10-pole and 12-slot/14-pole modular FSCW PM machines and traditional FSCW PM machines were established using the finite element analysis (FEA) software, and the open-circuit flux density, cogging torque, load torque, loss, and efficiency were simulated and analyzed. The results showed that the modular structure of E-core stator not only simplified the transportation, installation, and maintenance of wind turbines, but also optimized the electromagnetic performance of the 12-slot/14-pole machine, i.e., improved the output torque and operation efficiency.

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Zhang, Xinxing, Wenxiang Zhao, Jinghua Ji, Junqiang Zheng, Zhijian Ling, and Jingfeng Mao. "Influence of slot-pole configuration on reluctance torque in fractional-slot concentrated-winding interior permanent-magnet machines." International Journal of Applied Electromagnetics and Mechanics 54, no. 4 (July 19, 2017): 525–34. http://dx.doi.org/10.3233/jae-170015.

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Gundogdu, Tayfun, Zi-Qiang Zhu, and Jean-Claude Mipo. "Design and Analysis of Advanced Nonoverlapping Winding Induction Machines for EV/HEV Applications." Energies 14, no. 20 (October 19, 2021): 6849. http://dx.doi.org/10.3390/en14206849.

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Abstract:

This paper presents a detailed analysis and design guidelines for advanced nonoverlapping winding induction machines (AIMs) with coil-pitch of two slot-pitches by considering some vital empirical rules and flux-weakening characteristics. The aim of the study is to develop a type of new winding and stator topology for induction machines (IMs) that will lead to a decrease in total axial length without sacrificing torque, power, and efficiency. The key performance characteristics of the improved AIMs are investigated by 2D time-stepping finite element analysis (FEA) and compared with those of IMs having fractional and conventional overlapping and nonoverlapping windings. Compared with the conventional overlapping winding counterpart of the AIM, a ~25% shorter axial length without sacrificing torque, output power, and efficiency is achieved. In addition, the influences of major design parameters, such as stator slot, rotor slot and pole numbers, stack length, number of turns per phase, machine geometric parameters, etc., on the flux-weakening characteristics are investigated. It has been concluded that the major design parameters have a considerable effect on the electromagnetic performance. However, among those parameters, the influences of pole number and stack length together with the number of turns on flux-weakening characteristics are significant.

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Zhao, B., J. Gong, T. Tong, Y. Xu, E. Semail, N. K. Nguyen, and F. Gillon. "A Novel Five-Phase Fractional Slot Concentrated Winding with Low Space Harmonic Contents." IEEE Transactions on Magnetics 57, no. 6 (June 2021): 1–5. http://dx.doi.org/10.1109/tmag.2021.3057650.

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EL-Refaie, Ayman M., Manoj R. Shah, James P. Alexander, Steven Galioto, Kum-Kang Huh, and William D. Gerstler. "Rotor End Losses in Multiphase Fractional-Slot Concentrated-Winding Permanent Magnet Synchronous Machines." IEEE Transactions on Industry Applications 47, no. 5 (September 2011): 2066–74. http://dx.doi.org/10.1109/tia.2011.2162049.

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45

De Donato, Giulio, Fabio Giulii Capponi, and Federico Caricchi. "Fractional-Slot Concentrated-Winding Axial-Flux Permanent-Magnet Machine With Core-Wound Coils." IEEE Transactions on Industry Applications 48, no. 2 (March 2012): 630–41. http://dx.doi.org/10.1109/tia.2011.2182024.

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46

Giulii Capponi, Fabio, Giulio De Donato, Giovanni Antonio Rivellini, and Federico Caricchi. "Fractional-Slot Concentrated-Winding Axial-Flux Permanent-Magnet Machine With Tooth-Wound Coils." IEEE Transactions on Industry Applications 50, no. 4 (July 2014): 2446–57. http://dx.doi.org/10.1109/tia.2013.2295432.

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47

Toporkov, D. M., M. A. Kovtun, and I. L. Popov. "Magnetic vibrations in synchronous machines with permanent magnets and fractional slot concentrated winding." IOP Conference Series: Materials Science and Engineering 760 (February 7, 2020): 012030. http://dx.doi.org/10.1088/1757-899x/760/1/012030.

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48

Yang, Junqin, Guohai Liu, Wenxiang Zhao, Qian Chen, Yicheng Jiang, Longgang Sun, and Xiaoyong Zhu. "Quantitative Comparison for Fractional-Slot Concentrated-Winding Configurations of Permanent-Magnet Vernier Machines." IEEE Transactions on Magnetics 49, no. 7 (July 2013): 3826–29. http://dx.doi.org/10.1109/tmag.2013.2243407.

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49

Edhah, Saleh O., Jamal Y. Alsawalhi, and Ahmed A. Al-Durra. "Multi-Objective Optimization Design of Fractional Slot Concentrated Winding Permanent Magnet Synchronous Machines." IEEE Access 7 (2019): 162874–82. http://dx.doi.org/10.1109/access.2019.2951023.

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50

Chaithongsuk, Sisuda, Noureddine Takorabet, and Sangkla Kreuawan. "Reduction of Eddy-Current Losses in Fractional-Slot Concentrated-Winding Synchronous PM Motors." IEEE Transactions on Magnetics 51, no. 3 (March 2015): 1–4. http://dx.doi.org/10.1109/tmag.2014.2359057.

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