AC Application of HTS Conductors in Highly Dynamic Electric Motors

Oswald, B.; Best, K.-J.; Setzer, M.; Duffner, Eberhard; Soell, M.; Gawalek, W.; Kovalev, L.K.

doi:10.1088/1742-6596/43/1/195

Cited by 15 publications

(7 citation statements)

References 4 publications

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“…[1]. Because magnetic field is non-homogenous at the end of such arranged coil many efforts are directed to coil design where magnetic flux at the end of coil is parallel to the wire in pancake windings.…”

Section: The State-of-the-artmentioning

confidence: 99%

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New shape of superconducting coil with improved critical current – design and FEM analysis results

Grzesik

Stępień

2008

J. Phys.: Conf. Ser.

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Abstract. The novel superconducting HTS coil designed for Superconducting Magnetic Energy Storage (SMES) is the aim of the paper. Novelity lies in the shape of the coil that minimises perpendicular component of the flux density of HTS wire. In this paper authors try to find the shape of the coil where perpendicular component of magnetic field is as close as possible to zero. Proposed solution has the helical shape of coil turns and the special shape of the magnetic core (magnetic core with air gap is needed for increasing stored energy). Helical turns are put on toroidal former and then magnetic core on it. Each turn has the same shape, length and is put in the same magnetic flux. Near-uniform distribution of magnetic flux is the result of the shape of winding and also non-uniform shape (or non-concentric) of magnetic core that has multiple radial air gaps. It produces magnetic field distribution in magnetic core shaped coaxially to winding and distribution of stored magnetic energy uniformly on magnetic core circumference. Magnetic energy is stored in air gaps and proposed shape of core is the best solution of core but its fabrication produces technological difficulties in core manufacturing.

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Section: The State-of-the-artmentioning

confidence: 99%

“…It is sensitivity of critical current in wire on direction of magnetic field. Many efforts are focused on shaping of magnetic field properly to HTS windings [1], [2]. This work shows different approach.…”

Section: Introductionmentioning

confidence: 99%

New shape of superconducting coil with improved critical current – design and FEM analysis results

Grzesik

Stępień

2008

J. Phys.: Conf. Ser.

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“…A tubular actuator with permanent magnet mover and a superconducting stator with a soft magnetic iron core was presented in [6]. For this actuator, loss calculations were presented for sinusoidal excitation of the coils, concluding that the maximum frequency of the coil currents is around 15 Hz in [7].…”

Section: Introductionmentioning

confidence: 99%

Modeling and comparison of superconducting linear actuators for highly dynamic motion

Bruyn¹,

Jansen²,

Lomonova³

2015

Archives of Electrical Engineering

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This paper presents a numerical modeling method for AC losses in highly dynamic linear actuators with high temperature superconducting (HTS) tapes. The AC losses and generated force of two actuators, with different placement of the cryostats, are compared. In these actuators, the main loss component in the superconducting tapes are hysteresis losses, which result from both the non-sinusoidal phase currents and move ment of the permanent magnets. The modeling method, based on the H-formulation of the magnetic fields, takes into account permanent magnetization and movement of per manent magnets. Calculated losses as function of the peak phase current of both super conducting actuators are compared to those of an equivalent non-cryogenic actuator.

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“…Therefore, this research direction is useful. In the past, Oswald et al designed a cylindrical linear synchronous motor with a BSSCO wire-wound armature [10][11][12]. Next Kellers et al produced a cylindrical linear induction motor including a BSSCO wire-wound armature and a copper mover [13].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of thrusts of a cylindrical linear synchronous motor with an HTS coil magnet as the excitation system

Duan

Yan

Luo

et al. 2015

Physica C: Superconductivity and its Applications

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AC Application of HTS Conductors in Highly Dynamic Electric Motors

Cited by 15 publications

References 4 publications

New shape of superconducting coil with improved critical current – design and FEM analysis results

New shape of superconducting coil with improved critical current – design and FEM analysis results

Modeling and comparison of superconducting linear actuators for highly dynamic motion

Experimental study of thrusts of a cylindrical linear synchronous motor with an HTS coil magnet as the excitation system

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