Patent
Transverse flux machine
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TLDR
In this paper, the U-shaped stator body of a transverse flux machine is segmented and grain-oriented metal sheets can be used which enable the efficiency and power density to be increased.Abstract:
In known transverse flux machines the losses in the magnetically soft body prevent an increase in efficiency. Whilst the production of the winding is remarkable owing to its simplicity, the production of the laminated iron body conveying the magnetic flux incurs high costs. In addition to the saturation in the iron, the use of air gaps restricts any increase in power density. According to the invention the two air gaps (21) are disposed radially externally of the winding (15) and the magnetically hard and/or soft rotor parts (19, 20), which periodically close the magnetic circuit, are disposed axially within the ends of the magnetically soft stator body (18). This air gap arrangement gives rise to an air gap surface which is large relative to the external dimensions and the mass of the machine, and also relieves the load on the housing. Owing to the segmentation of this U-shaped stator body, material wastage during production is minimized and grain-oriented metal sheets can be used which, owing to their favourable properties, enable the efficiency and power density to be increased. Segments of identical construction can be used in machines having different dimensions and power data. The type of construction according to the invention simultaneously reduces costs, weight and losses in transverse flux machines.read more
Citations
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Journal ArticleDOI
Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machines
Ronghai Qu,Thomas A. Lipo +1 more
TL;DR: In this paper, a novel machine family-dual-rotor, radial-flux, toroidally wound permanent-magnet (RFTPM) machines-was proposed in order to substantially improve machine torque density and efficiency.
Patent
Transverse flux machine
TL;DR: In this paper, a stator assembly that provides a plurality of U-shaped magnetic circuits placed circumferentially around a rotor assembly is described. And the position of the stator yokes within the slots of the first and second stator segments, respectively, results in the creation of the plurality of magnetic circuits, each magnetic circuit defined by one of the poles associated with the first stator segment, one of its yokes, and one of those corresponding to the second stators.
Patent
Transverse and/or commutated flux system rotor concepts
TL;DR: In this paper, a transverse and commutated flux machine can be configured with gaps there between, for example in order to counteract tolerance stackup, and partial stators may facilitate ease of assembly and/or use with various rotors.
Patent
Permanent-magnet switched-flux machine
TL;DR: In this article, a permanent magnet switched-flux (PMSF) device has an outer rotor mounted to a shaft about a central axis extending axially through the PMSF device.
Patent
Transverse and/or commutated flux systems having laminated and powdered metal portions
TL;DR: In this paper, an electrical machine comprising a rotor, a coil and a stator comprising a lamination stack coupled to a tooth, wherein the electrical machine is at least one of a transversal flux machine, is described.
References
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