Analysis and design of triple-rotor axial-flux spoke-array vernier permanent magnet machines

Zhang, Rui; Li, Jian; Qu, Ronghai; Li, Dawei

doi:10.1109/ecce.2016.7854870

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…Axial flux pattern, spoke-array, and toroidal coil are adopted in a triple-rotor PMVM, enabling dramatic improvements in power factor (0.96) as well as torque density (24.2 kNm/m 3 ) [64]. This is primarily attributable to an aggressive usage of PM materials.…”

Section: Evolution Of Topologiesmentioning

confidence: 99%

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Permanent magnet vernier machine: a review

El-Refaie

2019

IET Electric Power Applications

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Permanent magnet vernier machines (PMVMs) gained a lot of interest over the past couple of decades. This is mainly due to their high torque density enabled by the magnetic gearing effect. This study will provide a thorough review of recent advances in PMVMs. This review will cover the principle of operation and nature of magnetic gearing in PMVMs, and a better understanding of novel PMVM topologies using different winding configuration as well as different modulation poles and rotor structures. Detailed discussions on the choice of gear ratio, slot-pole combinations, design optimisation and role of advanced materials in PMVMs will be presented. This will provide an update on the current state-of-the art as well as future areas of research. Furthermore, the power factor issue, fault tolerance as well as cost reduction will be discussed highlighting the gap between the current state-of-the art and what is needed in practical applications.

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Section: Evolution Of Topologiesmentioning

confidence: 99%

“…Triplerotor axial-flux spoke-PM [64] DC-biased current ( Fig. 16) [78] torque density, kNm/m 3 The stator teeth, which act as FMPs in a PMVM, feature wide slot opening, resulting in low Carter's coefficient (large equivalent air gap length).…”

Section: Reasons For Low-power Factormentioning

confidence: 99%

Permanent magnet vernier machine: a review

El-Refaie

2019

IET Electric Power Applications

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“…The machine can decouple the input power, but its torque density is quite low [22]. In addition, the AF-FMPM machines have also been designed for the railway traction application [23,24]. The analysis results show that the machine owns high power factor and high torque density.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Novel Axial Field Flux-Modulation Permanent Magnet Machines for Direct Drive Application

Yang

Rao

2022

Machines

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Axial field flux-modulation permanent magnet (AF-FMPM) machines have been developed for direct drive applications such as wind power generation, HEVs, and railway traction. However, the existing studies on AF-FMPM machines are limited to the PM rotor structure, and less research has been carried out on AF-FMPM machines with PM stator structure. This paper studies two axial field flux-modulation permanent magnet (AF-FMPM) machines, i.e., NS or NN type, which all consist of the same stator and rotor structures but the dual identical outer surface-mounted PM stators face each other in different position. A comprehensive theoretical analysis and global optimization of the AF-FMPM machine based on ANSYS Maxwell 3-D FEA is presented. The performance comparisons between the AF-FMPM machine (NS) and AF-FMPM machine (NN) are presented, including the influence of the critical structural dimensions on the machine performance, phase flux linkage, phase back EMF, cogging torque, and average torque performance. The results show that the phase back EMF and average torque of the AF-FMPM machine (NS) are more sinusoidal and higher than that of the AF-FMPM machine (NN). Furthermore, the NS type machine shows the non-saliency characteristics, while the NN type machine is the salient machine.

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“…To address such limitations, a three-phase radial-field vernier-type PM machine with 46 rotor poles, and only 6 stator coils has been proposed in [4]. Other recent papers on the subject with radial-and axial-field versions include [5], [6]. In addition, a three-phase axial-field version with a Dr. Vandana Rallabandi was with the SPARK Laboratory, ECE Department, University of Kentucky, Lexington, KY and is now with GE Research, Niskayuna, NY.…”

Section: Introductionmentioning

confidence: 99%