Semi-Analytical Calculation of a Laminated Transverse Flux Machine

Rabenstein, L.; Dietz, Armin; Kremser, Andreas; Parspour, Nejila

doi:10.1109/icem49940.2020.9271065

Cited by 6 publications

(9 citation statements)

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“…In this approach, the flux path is defined through flux tubes that are tabulated for different geometries: their analytical expressions can be found in electric machines literature, for example, in [135]. Magnetic saturation (B-H curve) can be taken into account in MEC solving: for example, in [60], the Gauss-Seidel method to solve the nonlinear equations and in [109] the Broyden method is used. Different MEC approaches for TFMs can be found in TFMs literature [60,70,89,94,109,119,136].…”

Section: Methodsmentioning

confidence: 99%

“…Magnetic saturation (B-H curve) can be taken into account in MEC solving: for example, in [60], the Gauss-Seidel method to solve the nonlinear equations and in [109] the Broyden method is used. Different MEC approaches for TFMs can be found in TFMs literature [60,70,89,94,109,119,136].…”

Section: Methodsmentioning

confidence: 99%

“…Surface-mounted magnets are usually glued on the external or internal edge of the rotor-depending on whether the rotor is internal or external, respectively-but they can be also be glued to the stator cores [61,76,[107][108][109], inserted in a disk-rotor [81,110,111] or embedded in the rotor teeth [112,113].…”

Section: Permanent Magnets (Surface-mounted Flux-concentrating Pm Ring)mentioning

confidence: 99%

“…Figure 11 depicts the torque-speed and power-speed ratings of some TFMs found in the literature [6,8,67,69,71,72,80,81,90,93,95,104,109,113,116,122,131], both for TF motors and generators. As shown in Figure 11a,b, most of the reported TFMs have their ratings up to 100 Nm and 2 kW: in Figure 11c,d The efficiency is a key aspect of modern electric drives, and it is closely linked to the machine losses: they are formed essentially by copper losses, iron losses, PMs losses, stray load losses and even housing losses (for example, if it is made of aluminum, eddy currents can be induced) [129].…”

Section: Torque Speed and Efficiency Ratingsmentioning

confidence: 99%

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A Review of Transverse Flux Machines Topologies and Design

2021

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High torque and power density are unique merits of transverse flux machines (TFMs). TFMs are particularly suitable for use in direct-drive systems, that is, those power systems with no gearbox between the electric machine and the prime mover or load. Variable speed wind turbines and in-wheel traction seem to be great-potential applications for TFMs. Nevertheless, the cogging torque, efficiency, power factor and manufacturing of TFMs should still be improved. In this paper, a comprehensive review of TFMs topologies and design is made, dealing with TFM applications, topologies, operation, design and modeling.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Permanent Magnets (Surface-mounted Flux-concentrating Pm Ring)mentioning

confidence: 99%

Section: Torque Speed and Efficiency Ratingsmentioning

confidence: 99%

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A Review of Transverse Flux Machines Topologies and Design

2021

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“…For the 3D assembly with smaller 2D sub-assemblies [38], [40], [119], [148], [239], [240] (see in Fig. 10) it is important to have an electrical insulation between the packages.…”

Section: A Laminated-steel Machinesmentioning

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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