A New High-Speed Dual-Stator Flux Switching Permanent Magnet Machine With Distributed Winding

Yu, Wenfei; Li, Kai; Wang, Hua; Hu, Mingjin; Zhang, Zhiheng; Hu, Jiapeng

doi:10.1109/tmag.2021.3082931

Cited by 16 publications

(10 citation statements)

References 13 publications

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“…To improve the unworkable properties of the conventional 6/4 FSPM machine, the generation principle of even-order harmonics in the flux linkage is analyzed in this paper. At present, most of the existing 6/4 motors use two identical stators [12][13][14][15]17] or two identical rotors [16] to eliminate even harmonics. Although the topologies of these motors are different, the principle of eliminating even harmonics is the same.…”

Section: Discussionmentioning

confidence: 99%

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Novel Axial Flux-Switching Permanent Magnet Machine for High-Speed Applications

Zhang

Liu

et al. 2022

Sustainability

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Conventional high-speed flux-switching machines have either a high fundamental frequency or more even harmonics. This paper proposes a novel six-slot four-pole axial flux-switching permanent magnet machine for high-speed applications. The machine, consisting of two radially distributed stators and one rotor, can effectively eliminate even harmonics in the flux linkage. First, the structural parameters that affect the performance of the motor are determined by the equivalent magnetic circuit method, and the optimal structural parameters of the motor are obtained by simulation optimization. Then, through finite element analysis, the three-dimensional model of the proposed machine is built, and the static electromagnetic characteristics are analyzed, including magnetic field distribution, flux linkage, back-electromotive force, cogging torque, and efficiency. The simulation results show that the total harmonic distortion of the flux linkage and back-electromotive force waveforms of the proposed novel machine is 2.2% and 9.8% respectively. The cogging torque of the optimal model is only 9 N.

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Section: Discussionmentioning

confidence: 99%

“…The experimental results verified the correctness of the theoretical analysis. Based on the axial dual-stator FSPM machine, a fractional slot distributed winding was introduced in [15]. Compared with the other winding forms, the FSPM machine with a fractional slot distributed winding has a higher winding factor and torque density.…”

Section: Introductionmentioning

confidence: 99%

Novel Axial Flux-Switching Permanent Magnet Machine for High-Speed Applications

Zhang

Liu

et al. 2022

Sustainability

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“…The magnet is less susceptible to demagnetisation in these types of motors because the magnetic flux does not pass through it. Researchers' interest has recently been piqued primarily by the FSPM's notable efficiency, power density, and high torque, as well as torque ripple and less noise [4,5].…”

Section: Introductionmentioning

confidence: 99%

Design and comparison of dual‐stator axial‐field flux‐switching permanent magnet motors for electric vehicle application

Farrokh

Vahedi

Torkaman

et al. 2023

IET Electrical Syst in Trans

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In this article, three dual-stator axial field flux-switching permanent magnet (DS-AFFSPM) topologies are selected, designed, and analysed in order to determine the most effective structure electric vehicle (EV) application based on torque density, power density, and efficiency. Accordingly, the introduced topologies are thoroughly compared in the same condition. The results show that, the high-power density, high-torque density, and high-efficiency, of the internal single-teeth rotor DS-AFFSPM topology is a suitable candidate for EV application because it has the lowest torque ripple.

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“…Low pole dual stator topology shows disadvantage of large machine volume due to axially coupling of two rotor and stator whereas dual stator configuration with multi-PM MMF suffers from mechanical constraints and are not feasible for high-speed applications due to segmented discrete rotor pieces. The aforesaid demerits are incorporated in dual stator with fractional slot distributed winding in [36] that results higher torque density however, due to distributed winding configuration, the overhang effect increases, resulting an increase in copper consumption and losses.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Dual Stator With Novel Dual Rotor Permanent Magnet Flux Switching Generator for Counter Rotating Wind Turbine Applications

2022

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Compared with the single rotor wind turbine, a counter-rotating (CR) wind turbine with two rotor sets leads to twice power density. In this regard, dual stator CR (DSCR) permanent magnet flux switching generator (DSCR-PMFSG) is employed. However, in DSCR-PMFSG both rotor and armature parts are rotating and require slip rings for power transmission. The slip rings associate demerits of constant maintenance, poor speed regulation, increased cost, and additional slip ring losses, whereas DSCR-PMFSG offer lower flux and lesser power density. To overcome the demerits as mentioned earlier of DSCR-PMFSG, this paper proposed a novel dual rotor counter-rotating permanent magnet flux switching generator (DRCR-PMFSG) for wind turbine applications that eliminate the requirements of slip rings and retain brushless operation. The proposed DRCR-PMFSG share one stator connected back-to-back through a flux bridge that provides an alternate flux path between two mechanical ports associated with the inner rotor and outer rotor, contributing to the cumulative output. A detailed comparative analysis of DSCR-PMFSG and DRCR-PMFSG is performed under static characteristics, overload, and wide speed range to generate output power, voltage, current, power density, and efficiency. Quantitative comparative analysis under static analysis evident that proposed DRCR-PMFSG exhibits 33.29% higher flux, suppressed cogging torque and torque ripples up to 53.48% and 67.45%, respectively. Furthermore, a comprehensive quantitative analysis is performed under coupled overload and over-speed capability. The analysis exposes that in comparison with DSCRP-PMFSG, the proposed DRCR-PMFSG improves voltage regulation factor by 55.88%, output current enhanced by 67.9%, raise output voltage to 2.01 times, and power density to 1.72 times while maintaining the efficiency of 90.195% and achieving stable voltage profile with load variation. Finally, a detailed comparative analysis with conventional designs is performed and comprehensive mathematical modelling based on sub-domain model is developed accounting stator slot and rotor pole combinations, magnetic saturation, and winding configuration to validates finite element analysis (FEA) utilizing JMAG Designer v.20.1.

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A New High-Speed Dual-Stator Flux Switching Permanent Magnet Machine With Distributed Winding

Cited by 16 publications

References 13 publications

Novel Axial Flux-Switching Permanent Magnet Machine for High-Speed Applications

Novel Axial Flux-Switching Permanent Magnet Machine for High-Speed Applications

Design and comparison of dual‐stator axial‐field flux‐switching permanent magnet motors for electric vehicle application

A Comparative Study of Dual Stator With Novel Dual Rotor Permanent Magnet Flux Switching Generator for Counter Rotating Wind Turbine Applications

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