Reluctance motor with strong rotor anisotropy

Platt, D.

doi:10.1109/28.137453

Cited by 37 publications

(8 citation statements)

References 13 publications

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“…The optimum kw suggested by the authors is 0.5 in this case [11]. The possibility of having a saliency value (ratio of d-axis inductance to q-axis inductance) of more than 20 was demonstrated in practice with prototype machines in [10] and [12]. In [13], a special winding arrangement was applied in an ALASynRM with different rotor topologies.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the research available in the literature considers the ALASynRM as a motor controlled with a frequency converter. In [10], an ALASynRM was proposed as an alternative to an IM, and the ALASynRM showed the torque capability comparable with the IM and the potential of having a higher efficiency than the IM. In [8], it was shown that ALASynRMs at powers of 50 W and 120 W have a higher efficiency and power factor than IMs of the same power in the same frame size independent of the control logic.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Magnetic and Nonmagnetic Layers in an Axially Laminated Anisotropic Rotor of a High-Speed Synchronous Reluctance Motor Including Manufacturing Aspects

et al. 2020

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The impact of the thickness of the magnetic and nonmagnetic layers in an axially laminated anisotropic (ALA) rotor in a synchronous reluctance motor (SynRM) aimed at high-speed applications was studied. Considering possible manufacturing issues, the layers are desired to be thick rather than thin. At the same time, the layer thickness is related to the electromagnetic capabilities of the ALASynRM. In the study, a 12 kW ALASynRM was considered. As a reference, a 12 kW IM with a smooth solid rotor with copper end rings was used for comparison with the designed ALASynRM. The manufacturing procedures of an ALA rotor with certain materials were verified in practice. Strength tests of the samples were implemented showing the suitability of the selected materials for application in the prototype. In the electromagnetic design, the thickness of the ALA rotor layers has shown to have a significant impact on the rotor eddy current losses. The stator iron losses and the winding Joule losses also depend on the rotor design. Torque ripple is considerably affected by the thickness of the rotor layers and their position in relation to the stator slots.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Magnetic and Nonmagnetic Layers in an Axially Laminated Anisotropic Rotor of a High-Speed Synchronous Reluctance Motor Including Manufacturing Aspects

et al. 2020

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“…To achieve this target, two types of rotor structures are presented in the literature, i.e. axially laminated anisotropic (ALA) and transversally laminated anisotropic (TLA) topologies [12, 13]. The saliency ratio is higher in ALA type as compared to TLA type rotor but TLA type rotor is more popular because of its easier in manufacturing and less amount of rotor iron loss.…”

Section: Introductionmentioning

confidence: 99%

Design refinements of synchronous reluctance motor utilising non‐magnetic radial ribs for traction applications

Panda

Keshri

Tessarolo

et al. 2020

IET Electric Power Applications

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The rotor structure of synchronous reluctance motor (SynRm) is usually provided with redial ribs to improve structural ruggedness for high‐speed operation. While these radial ribs contribute to mechanical robustness, they also reduce the average torque and limit the flux‐weakening capability due to an increase in inductance along the q ‐axis. To address this issue, the rotor design is refined by adopting non‐magnetic radial ribs in this study. The introduction of titanium as non‐magnetic material for radial ribs prevents magnetic leakage flux from flowing along the q ‐axis, and thereby improves the average torque, saliency ratio, efficiency and power factor of the SynRm. Furthermore, along with the electromagnetic analysis, the mechanical integrity of the proposed rotor design is also investigated. Two prototypes rated 1 kW at 1500 rpm are fabricated using both the conventional and the proposed rotor design, while the stator and other parameters are maintained constant in the two cases. The conventional design uses magnetic radial ribs whereas the proposed design uses non‐magnetic radial ribs. Finally, a thorough comparative study, including inductance tests on the prototypes, is performed between the proposed and the conventional SynRm, confirming the strengths of the technology solution being set forth.

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“…For SynRM rotor, the type of axially laminated anisotropy (ALA) is mostly used in a high-speed operation as proved in many research investigations [12][13][14][15]. Due to rigid structure and improved saliency ratio [16][17][18]. However, because of very thicker laminations it produces unwanted flux oscillations with very high iron losses.…”

Section: Introductionmentioning

confidence: 99%

The Design of Low-Cost Synchronous Reluctance Motor with a Surrogate-Assisted Optimization Technique

Bukhari

2020

SJET

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Reluctance motor with strong rotor anisotropy

Cited by 37 publications

References 13 publications

Influence of Magnetic and Nonmagnetic Layers in an Axially Laminated Anisotropic Rotor of a High-Speed Synchronous Reluctance Motor Including Manufacturing Aspects

Influence of Magnetic and Nonmagnetic Layers in an Axially Laminated Anisotropic Rotor of a High-Speed Synchronous Reluctance Motor Including Manufacturing Aspects

Design refinements of synchronous reluctance motor utilising non‐magnetic radial ribs for traction applications

The Design of Low-Cost Synchronous Reluctance Motor with a Surrogate-Assisted Optimization Technique

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