Comparison of Axial Flux PM Synchronous Machines With Different Rotor Back Cores

Marignetti, Fabrizio; Colli, V. Delli; Carbone, Silvio

doi:10.1109/tmag.2009.2034021

Cited by 29 publications

(12 citation statements)

References 14 publications

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“…In the design of electrical machines with SMC cores, the AFM and RFM with concentrated winding configuration and TFM have been widely investigated [10,[22][23][24][25]. In this section, the differences among RFM, TFM, and AFM will be compared, based on the simplified power equation.…”

Section: Qualitative Comparison Of Radial Flux Transverse Fluxmentioning

confidence: 99%

Comparative Study of Small Electrical Machines With Soft Magnetic Composite Cores

Liu

Lei

Wang

et al. 2017

IEEE Trans. Ind. Electron.

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In this paper, various kinds of electrical machines with soft magnetic composite (SMC) cores are compared, based on the qualitative and quantitative comparison methods. In the first part, the performances of five typical electrical machines with SMC cores are qualitatively compared. Simplified power equations for transverse flux, axial flux and radial flux electrical machines are deduced to show the main difference among them and key design points of each machine. In the second part, the outer rotor claw pole machine (CPM) and outer rotor transverse flux machine (TFM) are comprehensively compared in quantitative way, based on the 3D finite element method (FEM).It shows that the power capability of the outer rotor CPM is much higher than that of the TFM. On the other hand, the outer rotor CPM has higher cogging torque and no-load losses than the TFM. Furthermore, the four outer rotor radial flux machines are optimized and compared with the outer rotor CPM. The calculated results of the outer rotor TFM are compared with the experiment results, showing that the analysis results match well with the experiment ones. Several useful and interesting conclusions have been obtained for the electrical machines with SMC cores. Index Terms-Electrical machines, soft magnetic composite (SMC), qualitative and quantitative comparison, claw pole motor, transverse flux motor, radial flux machine, finite element method (FEM)

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Section: Qualitative Comparison Of Radial Flux Transverse Fluxmentioning

confidence: 99%

Comparative Study of Small Electrical Machines With Soft Magnetic Composite Cores

Liu

Lei

Wang

et al. 2017

IEEE Trans. Ind. Electron.

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“…For instance, the machine power density and efficiency can be improved by using a soft magnetic composite rotor (56), the machine iron losses can be reduced by adopting a radially varying air gap (57), and the machine design takes into account geometrical imperfections due to the manufacturing process (58).…”

Section: Machine Morphologiesmentioning

confidence: 99%

Permanent‐Magnet Machines

Chau

2015

Wiley Encyclopedia of Electrical and Electronics Engineering

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Being fueled by continual development of permanent‐magnet (PM) materials and machine structures, PM machines are becoming attractive for a wide range of applications. In this article, the magnet‐materials that have been used for PM machines are first introduced. Then, the classification of various PM machines is discussed. Consequently, major PM machines are described, with emphasis on their machine structures and operating principles. Also, the corresponding variants due to morphological changes are discussed. Finally, a quantitative evaluation of those viable PM machines is given to identify their prospects and potential applications.

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“…In fact, 120 since the experimental loss difference linearly depends on f, it is sufficient to adapt the coefficient 121 Q (loss) to get the observed behavior of ∆W (a,b) versus f. We find Q (loss) = 1 for the material SMC 1 and 122 Q (loss) = 1.56 for SMC 2 . Since Q (loss) = 1, the conventional approach invoking an equivalent 123 homogeneous material [6] [7] is acceptable in calculating W class,MAC (J p ,f) in the material SMC 1 . This 124 implies that in the material with organic binder heat-treated at low temperature, eddy current 125 percolation by intergrain random contacts does not play any role (the observed resistivity being that of 126 the binder).…”

Section: Validation Of the Macroscopic Loss Model 117mentioning

confidence: 99%

“…Their isotropic magnetic and thermal behavior provides a clear advantage for machines with 3D flux 21 paths, like axial flux machines [1][2], or claw pole generators [3]. 22…”

Section: Introduction 19mentioning

confidence: 99%

Classical eddy current losses in soft magnetic composites

Appino

Barrière²,

Fiorillo³

et al. 2013

Journal of Applied Physics

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1 a Corresponding author: barriere@satie.ens-cachan.fr 2 This paper deals with the problem of loss evaluation in Soft Magnetic Composites (SMC), focusing 2 on the classical loss component. It is known that eddy currents can flow in these granular materials at 3 two different scales, that of the single particle (microscopic eddy currents) and that of the specimen 4 cross-section (macroscopic eddy currents), the latter ensuing from imperfect insulation between 5 particles. It is often argued that this macroscopic loss component can be calculated considering an 6 equivalent homogeneous material of same bulk resistivity. This assumption has not found so far clear 7 and general experimental validation. In this paper, we discuss energy loss experiments in two different 8 SMC materials, obtained using different binder types, and we verify that a classical macroscopic loss 9 component, the sole size-dependent term, can be separately identified. It is also put in evidence that, 10 depending on the material, the measured sample resistivity and the equivalent resistivity entering the 11 calculation of the macroscopic eddy currents may not be the same. A corrective coefficient is therefore 12 introduced and experimentally identified. This coefficient appears to depend on the material type only, 13

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Comparison of Axial Flux PM Synchronous Machines With Different Rotor Back Cores

Cited by 29 publications

References 14 publications

Comparative Study of Small Electrical Machines With Soft Magnetic Composite Cores

Comparative Study of Small Electrical Machines With Soft Magnetic Composite Cores

Permanent‐Magnet Machines

Classical eddy current losses in soft magnetic composites

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