Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances

Murataliyev, Mukhammed; Wang, Shuo; Barater, Davide; Buticchi, Giampaolo; Jara, Werner; Galea, Michael; Gerada, Chris

doi:10.1109/tec.2021.3076675

Cited by 24 publications

(7 citation statements)

References 37 publications

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“…A qualitatively cost analysis of SCIM, PMaSynRM and SynRM has been reported in [107]. The comparison was carried out for a same stator frame and slot/pole combination.…”

Section: B Qualitative Cost Comparisonmentioning

confidence: 99%

Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison

2022

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In the last decade, the trend towards higher efficiency and higher torque density electrical machines without permanent magnets for industrial sector has rapidly increased. This work discusses the latest research and industrial advancements in Synchronous Reluctance machines (SynRM), being the emergent motor topology gaining wide acceptance by many industries. The paper presents an extensive literature review covering the background and evolvement of SynRM, including the most recent developments. Nowadays, SynRM has found its niche in the electrical machines market, and the reasons for that are highlighted in this work together with its advantages and disadvantages. The key journal publications in SynRM topics are discussed presenting the biggest challenges and latest advancements with particular regards to the design methodology. This paper aims to provide a thorough overview to the research community and industry about SynRM. There is a clear potential for SynRM to take over significant portion of electrical machine market in the near future to meet efficiency standards in industrial applications without the use of rare-earth permanent magnet technology.

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“…A qualitatively cost analysis of SCIM, PMaSynRM and SynRM has been reported in [107]. The comparison was carried out for a same stator frame and slot/pole combination.…”

Section: B Qualitative Cost Comparisonmentioning

confidence: 99%

Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison

2022

Self Cite

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“…It is reported that a particular placement of the PMs in the rotor increases the power density by 53% and reduces the torque ripple by 65%. An optimised design of PMa-SyRM for a washing machine compressor is presented in [5]. The proposed topology is claimed to have maximum output torque and efficiency, higher power factor, and reduced torque ripple.…”

Section: Introductionmentioning

confidence: 99%

Rare‐earth‐free Al‐Ni‐Co hybrid PMa‐SyRM for an air‐conditioner compressor

Vegireddy,

Sampathirao

2024

IET Electric Power Appl

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A hybrid ferrite‐Al‐Ni‐Co permanent magnet assisted synchronous reluctance motor (PMa‐SyRM) for an air‐conditioner compressor is proposed. Al‐Ni‐Co PMs have high residual flux density similar to rare‐earth PMs such as Nd‐Fe‐B and Sm‐Co. Therefore, the performance parameters of the PMa‐SyRM such as power factor, efficiency etc., with Al‐Ni‐Co PMs can be improved without significantly increasing the cost of the motor. However, Al‐Ni‐Co PMs have a steep IInd‐quadrant B‐H curve, and the challenge lies in addressing their demagnetisation issues. In the proposed hybrid PMa‐SyRM, the rotor geometry is suitably optimised for placing the Al‐Ni‐Co PMs in the centre flux barriers to address the demagnetisation issues. Further, an analytical magnetic circuit is presented to design the proposed PMa‐SyRM. Later, 2‐D finite element analysis of the proposed motor including the demagnetisation analysis of PMs and stress analysis of the rotor is carried out and presented. A prototype is fabricated, experimental validation is carried out, and the results of the performance and cost are compared with that of ferrite and hybrid ferrite‐Nd‐Fe‐B PMa‐SyRM.

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“…Based on this, the addition of magnets mitigates the disadvantages of SynRMs. Because of the high expense of rareearth permanent magnets (PMs) such as neodymium-iron-boron PMs with dysprosium, PM-assisted SynRMs (PMASynRMs), which have a similar structure to SynRMs, have been developed using low-cost magnets made from non-rare-earth materials to maximize the motor performance including output torque and power factor [1][2][3]. Because the high magnetic saturation of motors under heavy loads results in the generation of nonlinear torque, FEA software is usually used to design such motors [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Analytical Approach for Estimating the Average Torque of Synchronous Motors by Using the Flux Density in the Air Gap

Li,

Huang,

Chen

et al. 2023

Energies

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In this study, a generalized torque estimation method is proposed for synchronous motors, including surface permanent magnet synchronous motors (SPMSMs), synchronous reluctance motors (SynRMs), and interior permanent magnet synchronous motors (IPMSMs) for building the analytical motor model. The average motor torque is estimated using the Lorentz force by the generated flux density in the air gap to determine the relationships among torque, flux density, and injected current. In the proposed method, the generated flux density is derived step by step by considering the effects of magnetic flux saturation, the stator slot, the rotor barrier, and permanent magnets (PMs) to ensure that the generated average torque complies with the operating condition of the motor. To verify the proposed method, the output torque of finite element analysis (FEA), Maxwell 2D, is compared to the proposed method in a SPMSM. Moreover, a phasor diagram is plotted to determine the mechanism through which torque is generated in SynRMs and IPMSMs. A SynRM and an IPMSM with ferrites PMs are analyzed using the proposed method, FEA, and the experimental results of this study indicate the effectiveness.

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Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances

Cited by 24 publications

References 37 publications

Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison

Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison

Rare‐earth‐free Al‐Ni‐Co hybrid PMa‐SyRM for an air‐conditioner compressor

Analytical Approach for Estimating the Average Torque of Synchronous Motors by Using the Flux Density in the Air Gap

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