Design and validation of a 24-pole coreless axial flux permanent magnet motor for a solar powered vehicle

Aydın, Metin; Güleç, Mehmet; Demir, Y.; Akyuz, B.; Yolaçan, Ersin

doi:10.1109/icelmach.2016.7732721

Cited by 25 publications

(18 citation statements)

References 14 publications

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“…In (11) and (12), μ 0 is the vacuum permeability (Wb/A m), B r is the residual flux density of the magnet (T), L mc is the circumferential magnet length (mm), L ma is the axial magnet length (mm), g is the air-gap length (mm), t w is the coil width (mm), and K sat is the saturation factor.…”

Section: Analytical Designmentioning

confidence: 99%

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Design and construction of new axial‐flux permanent magnet motor

Yazdi

Saied

Mirimani

2020

IET Electric Power Applications

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The present study investigated the design, simulation, and manufacturing of a new coreless stator axial‐flux permanent‐magnet motor. In addition, to magnets with magnetisation along the motor axis, the new structure included magnets that were magnetised circumferentially and buried at the rotor surface. The electromagnetic design of the conventional axial‐flux motor and the new motor was evaluated according to nominal values and design equations. In this regard, the number of poles and coils, as well as the outer diameter of both motors were assumed to be identical. It was observed that the axial length of the new motor is shorter than the conventional axial‐flux motor. Simulations were continued through comparing the motors in terms of air‐gap flux density, torque, and back electromotive force using the transient finite element method. A comparison of the results showed that the new motor had a better performance than the conventional axial‐flux motor. Subsequently, the new motor was manufactured and tested; the experimental results proved to be close to those presented in the analytical section.

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Section: Analytical Designmentioning

confidence: 99%

“…Coreless AFPM machines have been studied less frequently. Some examples include the multi‐objective optimal design of coreless AFPM machines discussed in [6, 7], fractional slot winding configurations [8], and applications of such machines in wind turbine generators, [8, 9], electric vehicles, [10, 11], and airplanes, [12, 13].…”

Section: Introductionmentioning

confidence: 99%

Design and construction of new axial‐flux permanent magnet motor

Yazdi

Saied

Mirimani

2020

IET Electric Power Applications

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“…The stator of these topologies can be slotted or nonslotted [11][12][13][14][15][16]. The rotor structure can have surface-mounted or interior-mounted magnets [17]. The nonslotted axial flux topologies have higher torque density, higher efficiency, better heat scattering, and lower noise level than the slotted axial flux topologies [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

An analytical formula for selecting the feeding voltage and frequency in aTORUS-type nonslotted axial flux permanent magnet machine design

Mirzahosseini¹,

Darabi²,

Assili³

2019

Turk J Elec Eng & Comp Sci

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Axial flux permanent magnet (AFPM) motors are usually controlled by drive; therefore, in the design of these machines the feeding voltage and frequency are completely independent parameters. Undoubtedly, the values of these parameters have significant effects on the performance characteristics of the machine. The main objective of this paper is to investigate the effects of these parameters on the efficiency of a double-sided TORUS-type nonslotted (TORUS NS) AFPM motor and propose a formula for selecting the optimal values of the feeding voltage and frequency at the beginning of the design process. To fulfill this goal, different machines with various speeds, powers, and feeding voltages are designed based on a proposed design algorithm. Then a formula for calculating machine efficiency is presented based on the frequency, number of pole pairs, output power, and feeding voltage of the machine. In order to confirm the validity of the proposed formula, several fabricated machines with different powers and speeds are selected as case studies. The efficiency of these machines is calculated using the proposed formula and is measured in the laboratory. Comparing the results confirms the excellent accuracy of the proposed formula.

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“…Coreless AFPM machines have been studied less frequently. Some examples include the multiobjective optimal design of coreless AFPM machines, discussed in [5]- [7], fractional slot winding configurations [8], and applications of such machines in wind turbine generators, [9], [10], electric vehicles, [11], [12], and airplanes, [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Coreless and Conventional Axial Flux Permanent Magnet Motors for Solar Cars

Taran

Rallabandi

Heins³

et al. 2018

IEEE Trans. on Ind. Applicat.

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Axial flux permanent magnet (AFPM) motors are suitable options for solar powered vehicles due to their compact structure and high torque density. Furthermore, certain types of APFM machines may be configured without stator cores, which eliminates associated losses and cogging torque and simplifies the manufacturing and assembly. This paper examines two machine designs for use in the solar powered vehicle of the challenger class-a single rotor, single stator conventional AFPM machine, and a coreless AFPM machine with multiple stator and rotor disks. Response surface methodology (RSM) is utilized for the systematic comparison of the conventional and coreless topologies and to select the optimum designs among several hundreds of candidates. Designs with minimum losses and mass producing required torque with larger air-gap are favored. The performance of the selected designs have been studied via 3D finite element analysis (FEA). The FEA parametric modeling methodology is validated by measurements on three AFPM machines of the conventional and coreless type. Index Terms-Axial flux permanent magnet machines, coreless, multi-disk, solar powered electric vehicles, finite element analysis, winding factor, response surface methodology, design of experiments.

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Design and validation of a 24-pole coreless axial flux permanent magnet motor for a solar powered vehicle

Cited by 25 publications

References 14 publications

Design and construction of new axial‐flux permanent magnet motor

Design and construction of new axial‐flux permanent magnet motor

An analytical formula for selecting the feeding voltage and frequency in aTORUS-type nonslotted axial flux permanent magnet machine design

Coreless and Conventional Axial Flux Permanent Magnet Motors for Solar Cars

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