Design of a permanent magnetic excited transverse flux machine for robotic applications

Keller, Marina; Müller, S.; Parspour, Nejila

doi:10.1109/icelmach.2016.7732725

Cited by 22 publications

(5 citation statements)

References 7 publications

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“…The electrical conductivity σ is assumed to be linear. Instead of using a nonlinear function for µ, a nonlinear B-H curve directly describes the relation between B and H [8,[10][11][12].…”

Section: Maxwell's Equationsmentioning

confidence: 99%

Accelerated 3D FEA of an Axial Flux Machine by Exclusively Using the Magnetic Scalar Potential

Schäfer,

Pecha,

Kaiser

et al. 2023

Energies

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This article focuses on increasing the computational efficiency of 3D multi-static magnetic finite element analysis (FEA) for electrical machines (EMs), which have a magnetic field evolving in 3D space. Although 3D FEA is crucial for analyzing these machines and their operational behavior, it is computationally expensive. A novel approach is proposed in order to solve the magnetic field equations by exclusively using the magnetic scalar potential. For this purpose, virtual variable permanent magnets (vPMs) are introduced to model the impact of the machine’s coils. The effect on which this approach is based is derived from and explained by Maxwell’s equations. To validate the new approach, an axial flux machine (AFM) is simulated using both 2D and 3D FEA with the magnetic vector potential and current-carrying coils as a reference. The results demonstrate a high level of agreement between the new approach and the reference simulations as well as an acceleration of the computation by a factor of 15 or even more. Additionally, the research provides valuable insights into meshing techniques and torque calculation for EMs in FEA.

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Section: Maxwell's Equationsmentioning

confidence: 99%

Accelerated 3D FEA of an Axial Flux Machine by Exclusively Using the Magnetic Scalar Potential

Schäfer,

Pecha,

Kaiser

et al. 2023

Energies

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“…The claws cover the entirety or the majority of the width of the air gap, guiding the transverse components of the flux. There are various examples for CP-TFMs [42], [81]- [83], [92], [93], [95], [170]- [179].…”

Section: ) Cp-corementioning

confidence: 99%

Transverse Flux Machine—A Review

Kaiser

Parspour

2022

IEEE Access

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For applications with high torque demand, gearboxes are commonly used to convert torque and speed in order to receive higher specific values for torque and power. This causes additional losses, cost, inaccuracies, effort, and noise. Eliminating the need of a mechanical gear and the associated disadvantages, Transverse Flux Machines with their high torque density are a very promising alternative. Despite a high torque density and a good efficiency, these types of machines are not commonly used. Due to the complex structure, challenges with mechanical design, and modeling of the machine behavior arise. Additionally, there are high requirements for the inverter due to the low power factor. This paper provides an overview of the state of the art including the potentials and advantages but also the problems and hindrances of these types of machines. Relating to linear and rotary machines from research and industry, the machine is introduced with its history, application and classification. Further, the general technical aspects, the influence of materials for flux guidance, the methods of modeling, methods for a minimization of torque ripples, as well as methods for power factor improvement are presented.

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“…The stator to be manufactured consists of two identical half-shells, the approximate shape of which has already been determined in earlier works using finite element (FEM) simulations [19][20][21]. At that time, SMC powder was used as the starting material to limit the high eddy current losses of the massive components.…”

Section: Simulationmentioning

confidence: 99%

Additively Manufactured Transverse Flux Machine Components with Integrated Slits for Loss Reduction

Kresse

Schurr

Lanz

et al. 2022

Metals

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Laser powder bed fusion (L-PBF) was used to produce stator half-shells of a transverse flux machine from pure iron (99.9% Fe). In order to reduce iron losses in the bulk components, radially extending slits with a nominal width of 150 and 300 µm, respectively, were integrated during manufacturing. The components were subjected to a suitable heat treatment. In addition to a microscopic examination of the slit quality, the iron losses were also measured using both a commercial and a self-developed measurement setup. The investigations showed the iron losses can be reduced by up to 49% due to the integrated slits and the heat treatment.

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Design of a permanent magnetic excited transverse flux machine for robotic applications

Cited by 22 publications

References 7 publications

Accelerated 3D FEA of an Axial Flux Machine by Exclusively Using the Magnetic Scalar Potential

Accelerated 3D FEA of an Axial Flux Machine by Exclusively Using the Magnetic Scalar Potential

Transverse Flux Machine—A Review

Additively Manufactured Transverse Flux Machine Components with Integrated Slits for Loss Reduction

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