Design of high torque traction motors for automotive applications using modulated pole SMC machines

Baker, N. J.; Atkinson, Glynn; Washington, JG; Mecrow, B.C.; Nord, G.; Sjöberg, Lars E.

doi:10.1049/cp.2012.0311

Cited by 10 publications

(10 citation statements)

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“…8, with I q = I b , and if the term I q R w is small compared to the back emf, then it is frequency independent. It can be appreciated that the expression of x tot shown in (36) is closely related to the power factor, as pointed out in (31). In simple terms, if x tot increases, then φ tends to increase and the power factor tends to decrease.…”

Section: Design Trade-offsmentioning

confidence: 79%

“…The current trend to study machines with complicated geometries such as TFMs [20], [21], [22], [23], [24], [25], [26], [27], [28], [29] and claw pole machines [30], [31], [32], [33], [34] is to use 3D CAD modelling and numerical methods like finite element analysis (FEA). This approach produce accurate results but does not provide an insight as deep as that provided by analytical methods.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Transverse Flux Machines Using a Virtual Mutual Inductance Approach

Anglada

Sharkh

2018

IEEE Trans. Energy Convers.

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Abstract-In this paper a virtual mutual inductance approach is used to analyse the performance of transverse flux machines (TFMs). The virtual mutual inductance between the stator windings and the magnets' equivalent currents is obtained by integrating the flux produced by the stator windings over the surface of the magnets. Key design parameters such as back EMF, torque, phase inductance and power factor are readily calculated using the proposed methodology. This method is also used to optimise the geometry of a particular machine which provides an insight into the relationship between power factor and torque. Furthermore, the insights gained suggest a design approach that takes into account the power factor of TFMs, which may help unlock their potential through a trade-off between torque density and power factor. The results obtained using the analytical model are verified using 3D finite element analysis (FEA) and experimental data.

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Section: Design Trade-offsmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Analysis of Transverse Flux Machines Using a Virtual Mutual Inductance Approach

Anglada

Sharkh

2018

IEEE Trans. Energy Convers.

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“…TFMs have already been studied as an alternative to radial machines for automotive applications, as can be seen in [4, 8–10].…”

Section: Transverse Flux Machinementioning

confidence: 99%

“…Previous work on this machine has been related to cost reduction [1], demagnetisation analysis [2], and fault tolerant performance [3]. This paper considers replacing the existing design with a transverse flux machine (TFM), a topology well known for high torque‐density at low speed [4].…”

Section: Introductionmentioning

confidence: 99%

Transverse flux machines as an alternative to radial flux machines in an in‐wheel motor

Martinez-Ocaña¹,

Baker²,

Mecrow³

et al. 2019

J. eng.

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“…The Transverse Flux Machine (TFM) is often proposed for torque dense applications such as that required for electric vehicles [6,7]. In a linear form it has been studied for wave energy [8] and the free piston engine [9,10].…”

Section: A Machine Topologymentioning

confidence: 99%

Optimization and comparison of linear transverse flux and flux switching machines

Baker

Wang

Atkinson

2016

2016 XXII International Conference on Electrical Machines (ICEM)

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This paper investigates the design of alternative permanent magnet linear machines for use as the generator in a free piston engine. All of the machines are of a modulated pole structure with three dimensional flux flows. In transverse flux machines such as these, the current flows in a different plane to the flux path, eliminating the usual conflict between electric and magnetic loading. For a linear machine, the mass of magnets used is sensitive to whether the magnets are mounted on the stator or translator. Hence this paper compares transverse flux machines with translator mounted magnets and flux switching machines with stator mounted magnets. A three dimensional finite element analysis of each topology is run through an optimization routine in order to investigate the magnet usage, power factor and other performance criteria. It is concluded that flux switching machine is uncompetitive due to the 65% flux leakage even with improved tooth structure, moreover the transverse flux machine is shown to perform better overall, giving a better power factor, better efficiency and lower translator mass as a whole flux switching machine is not match for free piston engine applications.

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Design of high torque traction motors for automotive applications using modulated pole SMC machines

Cited by 10 publications

References 0 publications

Analysis of Transverse Flux Machines Using a Virtual Mutual Inductance Approach

Analysis of Transverse Flux Machines Using a Virtual Mutual Inductance Approach

Transverse flux machines as an alternative to radial flux machines in an in‐wheel motor

Optimization and comparison of linear transverse flux and flux switching machines

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