Design, Prototyping, and Analysis of a Novel Modular Permanent-Magnet Transverse Flux Disk Generator

Abstract:The purpose of this paper is to propose a novel design for the transverse flux permanent magnet (TFPM) disk-rotor generator with E and I-shaped cores (TFPMDEIG). Disk-shape structure increases the machine's power factor, allows for high rotational speeds, decreases centrifugal force over permanent magnets, and is employed in wind turbines, due to its compact structures. As for other advantages for this structure, one can point to the fact that there are as many windings as machine's pole pairs; these windings become parallel by observing the polarity. In other words, the total power of this machine is distributed between pole pairs, increasing the overall reliability of the machine. In this paper, first, the initial design algorithm and the basic formulas governing the behavior of the proposed structure using the equivalent magnetic circuit for each pole are provided, and the three-dimensional finite element method (3D-FEM) is used for verification of the algorithm. To validate the simulation results (3D-FEM), then, a prototype has been fabricated and experienced. The experimental results are in good agreement with simulation results.

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“…The fundamental harmonic of final no load voltage, E f (RMS), will be calculated according to Equation (26):…”

Section: Computing Final No Load Voltage Of the Generatormentioning

confidence: 99%

“…Moreover, the rotor is of disk shape, because a cylindrical rotor increases the inductance of armature winding and decreases the machine's power factor [26]. Among other advantages of the rotor-disk, it can be noted that this allows for high rotational speeds.…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis and Fabrication of a Novel Transverse Flux Permanent Magnet Machine with Disk Rotor

Azarinfar

Aghaebrahimi

2017

Applied Sciences

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“…When the rotor rotates one polar pitch, the main flux reverses and thus the sinusoidal back EMF will be produced continuously. In order to obtain a three-phase generator, three identical single-phase modules ranked axially or shifted circumferentially, both by 120 electrical degrees should be used [16].…”

Section: Structure Of Double C-hoop Stator Tfpmgmentioning

confidence: 99%

A Novel Transverse Flux Permanent Magnet Generator With Double C-Hoop Stator and Flux-Concentrated Rotor

et al. 2015

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Transverse flux permanent magnet machine possesses the characteristic feature of decoupled electric load and magnetic load to obtain high power density. A novel transverse flux permanent magnet generator (TFPMG) with double C-hoop stator and fluxconcentrated rotor is proposed for low speed applications such as direct-drive power generation, which has larger torque capability and more poles than traditional double-side TFPMGs. The structure and operation principles of the generator are described in detail. The three-dimension (3-D) finite element method (FEM) is employed to compute the no-load magnetic field distributions. The analytical results including flux density waveform, EMF waveform, and inductance waveform of the armature winding, are obtained to verify the principle and feasibility of the proposed generator. The cogging torque is also analyzed and optimized by the 3-D FEM. A prototype is fabricated and some experiments are conducted. The experimental results of back-EMF and waveforms of current and voltage with different loads verify the FEM analysis previews well. Index Terms-double C-hoop stator, flux-concentrated, finite element method, permanent magnet generator, transverse flux

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“…One of the effective methods to analyze the magnetic field is employing equivalent magnetic circuits [18]. The simplified flux path embodiment and the corresponding equivalent magnetic circuits are shown in Fig.…”

Section: B Parametric Calculationmentioning

confidence: 99%

Transverse flux permanent magnet motor with double-C stator hoops and flux-concentrated rotor for in-wheel drive electric vehicle

Zhou

Lin

Yang

et al. 2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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This paper proposes a novel transverse flux permanent magnet motor (TFPMM) with double-C stator hoops. The proposed TFPMM carries significantly increased power density due to higher coefficient of utilization of the volume compared with the traditional double-side counterparts. The topology, principle and parametric calculation of the TFPMM are described elaborately. The magnetic field and characteristics analysis are conducted by three-dimensional finite element method (3D FEM) including flux density, EMF and winding inductance, and cogging torque are obtained to verify the feasibility of proposed TFPMM design. The mechanism of cogging torque of the proposed double-C stator hoops TFPMM is also analyzed. The results of transient simulation of power density well align with the theoretical analysis, which confirm that the power density is significantly increased due to its higher volumetric utilization ratio.

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Design, Prototyping, and Analysis of a Novel Modular Permanent-Magnet Transverse Flux Disk Generator

Cited by 52 publications

References 11 publications

Design, Analysis and Fabrication of a Novel Transverse Flux Permanent Magnet Machine with Disk Rotor

Design, Analysis and Fabrication of a Novel Transverse Flux Permanent Magnet Machine with Disk Rotor

A Novel Transverse Flux Permanent Magnet Generator With Double C-Hoop Stator and Flux-Concentrated Rotor

Transverse flux permanent magnet motor with double-C stator hoops and flux-concentrated rotor for in-wheel drive electric vehicle

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