Axial Ferrite-Magnet-Assisted Synchronous Reluctance Motor

Akiki, Paul; Hage-Hassan, Maya; Bensetti, Mohamed; Vannier, J-C; Ramirez, Dionisio; McClelland, Mike

doi:10.1109/icelmach.2018.8507245

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…We compared the average torque obtained by evaluation at 500 equally distributed rotor positions between 0 and 2π with the value obtained by the four-point formula (2.18). Final design Table 7 1.1123 1.1129 0.048 Final design Table 9 1.4513 1.4516 0.027 * in this design ρ ν = 0.5, ρ M x = 0.5, ρ M y = 0.5 everywhere in the rotor When the torque value is not equal to zero, the error found was to be lower than 0.1% as expected and described in literature [1]. This is solved beyond the first iteration.…”

Section: Torque Computation Methodssupporting

confidence: 70%

Multi-Material Topology Optimization with Continuous Magnetization Direction for Permanent Magnet Synchronous Reluctance Motors

Gauthey,

Gangl,

Hassan

2021

Preprint

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Permanent magnet-assisted synchronous reluctance motors (PMSynRM) have a significantly higher average torque than synchronous reluctance motors. Thus, determining an optimal design results in a multi-material topology optimization problem, where one seeks to distribute ferromagnetic material, air and permanent magnets within the rotor in an optimal manner.This study proposed a novel density-based distribution scheme, which allows for continuous magnetization direction instead of a finite set of angles. Thus, an interpolation scheme is established between properties pertaining to magnets and non-linear materials. This allows for new designs to emerge without introducing complex geometric parameterization or relying on the user's biases and intuitions. Toward reducing computation time, Nitsche-type mortaring is applied, allowing for free rotation of the rotor mesh relative to the stator mesh. The average torque is approximated using only four-point static positions. This study investigates several interpolation schemes and presents a new one inspired by the topological derivative. We propose to filter the final design for the magnetization angle using K-mean clustering accounting for technical feasibility constraints of magnets. Finally, the design of the electrical motor is proposed to maximize torque value.

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Section: Torque Computation Methodssupporting

confidence: 70%

Multi-Material Topology Optimization with Continuous Magnetization Direction for Permanent Magnet Synchronous Reluctance Motors

Gauthey,

Gangl,

Hassan

2021

Preprint

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“…The ratios of barriers and segments in the AF-SynRM rotor structure are called the insulation ratio (k wq ), is given Equation (7).…”

Section: Rotor Designmentioning

confidence: 99%

“…The maximum speed of the DC load motor is 4000 1/min and its nominal torque is 42 Nm at 2270 1/min. There is a cooling unit (5) with internal radial fan on the DC motor, an encoder coupled to the motor (Baumer EIL580 1024 pulses/revolution) (7), and a torque sensor (6) to measure the motor speed. As the torque sensor, a load cell of IP66 Class, which can operate between −300 C and +700 C and has a measurement range up to 100 Nm, is used, which is connected to the motor body with the force arm.…”

Section: The Experimental Setupmentioning

confidence: 99%

“…5,6 Axial Flux (disc type) SynRMs are an alternative to radial flux motors with their compact structure and high power/ torque density, for example in applications with size constraints in the automotive field (large size when including fans, etc.). 7,8 In this study, AF-SynRM, which is studied for the first time in the literature, is designed. AF-SynRM topology and rotor structure has not worked before and it is a unique design.…”

Section: Introductionmentioning

confidence: 99%

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Optimal rotor design of novel axial flux synchronous reluctance motor and validation

Gerçekçioğlu

Akar

2021

Int Trans Electr Energ Syst

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Summary In this paper, it is aimed to design an original axial flux synchronous reluctance motor (AF‐SynRM), which has not been studied in the literature, has multiple barriers in its rotor, and to produce prototype of this motor. In the preliminary study of the AF‐SynRM design, analytical calculations are made on the rotor in two different topologies barrier types, multiple barrier structures, and three different insulation rates. It is modeled with the 3D finite element method (FEM). Torque, torque ripple, saliency ratio, shaft power, and efficiency parameters are analyzed. In the model that gives the best the results analytically, the model is ready for production by changing the barrier geometry with genetic algorithm (GA) based optimization analysis, reducing the torque ripple and completing the structural analysis. The model is made ready for prototype production. Compared to the radial flux model with the same power rating with the proposed design method, 2.2 kW EA‐SynRM prototype with higher torque density and lower volume was produced. The prototype produced has been tested according to the criteria of IEC TS 60034‐30‐2 and has the IEC 60034‐30‐1:2014 IE4 Super Premium efficiency class. Torque, torque ripple, power factor, shaft power, torque per amper, and efficiency parameters are analyzed and compared with simulation results. It will be a good alternative in applications where high efficiency and torque are desired with its lack of copper losses due to the absence of a cage in the rotor and low maintenance costs with its magnet less structure.

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“…SRM, mıknatıslı SRM ve mıknatıslı EA-SRM ile karşılaştırılmıştır. Üstün yönleri belirtilmiş ve üretilebilirliği tartışılmıştır [23][24][25]. Bir başka çalışmada ise 2.2 kW-1500 d/d-8 kutuplu EA-SRM prototipi tasarlanmış, rotor geometrisi üzerine detaylı çalışılmış ve üretilmiştir.…”

Section: şEkil 2 Srm Ve Akı Yolları A)yüksek Geçirgenlik B)düşük Geçirgenlikunclassified

Eksenel Akı Konseptindeki Senkron Relüktans ve İndüksiyon Motor'un Verim ve Performans Karşılaştırması

Gerçekçioğlu

Akar

2021

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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Efficiency, power density and cost play an important role in motors used in low-power industrial applications. In today's world, where the importance of energy efficiency and compact structure is increasing day by day, the Axial Flux Synchronous Reluctance Motor (AF-SynRM) design, which is a unique motor with no copper loss in its rotor and compact with its axial structure, has been compared with the Axial Flux-Induction Motor (AF-IM) with the same stator structure. Figure A. Rotor parts of two motors (AF-SynRM and AF-IM) with the same stator structure.Purpose: In this study, in two motors with the same stator structure and dimensions; In AF-IM and AF-SynRM, only the rotor part has been changed and the change in output parameters has been examined. Theory and Methods:In the preliminary study of the designs, the motor dimensions were calculated analytically and modeled with the 3D Finite Element Method (FEM). To optimize the saliency ratio, which is the most important factor affecting AF-SynRM performance, a Genetic Algorithm (GA) based optimization was made and the rotor geometry was changed. Results:In comparison, the outer diameter, inner diameter and stator parameters are the same, and the motor efficiency has been increased proportionally by 8.53% with only rotor change, and it has been increased from IE3 to IE4 standards. At full load, the AF-SynRM produced 23.2% more power than the AF-IM Conclusion: Considering the total losses, costs and efficiency values, the AF-SynRM design will be an alternative to the AF-IM compared with reference. In future studies, experimental comparison of AF-SynRM, which goes through production processes, with AF-IM will also be possible. In addition, designs of AF-SynRM with permanent magnets can also be designed and the comparison procedure can be repeated. Highlights• Motor Design. • Axial Flux.• Finite Element Method.

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Axial Ferrite-Magnet-Assisted Synchronous Reluctance Motor

Cited by 8 publications

References 14 publications

Multi-Material Topology Optimization with Continuous Magnetization Direction for Permanent Magnet Synchronous Reluctance Motors

Multi-Material Topology Optimization with Continuous Magnetization Direction for Permanent Magnet Synchronous Reluctance Motors

Optimal rotor design of novel axial flux synchronous reluctance motor and validation

Eksenel Akı Konseptindeki Senkron Relüktans ve İndüksiyon Motor'un Verim ve Performans Karşılaştırması

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