High output power electric motors with bulk HTS elements

Kovalev, L.K.; Ilushin, K.V.; Kovalev, Konstantin; Penkin, V.T.; Poltavets, V. N.; Koneev, S.M.A.; Akimov, I.I.; Gawalek, W.; Oswald, B.; Krabbes, G.

doi:10.1016/s0921-4534(02)02194-9

Cited by 31 publications

(22 citation statements)

References 1 publication

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“…Pre-magnetized synchronous motor presents, obviously, the best characteristics. These results agree with the experimental results obtained by Kovalev [10,11], in testing a German Oswald HTS machine. …”

Section: Discussionsupporting

confidence: 92%

Reluctance machines incorporating high temperature superconducting materials on the rotor

Rodrigues

Pires

2010

Physica C: Superconductivity

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Section: Discussionsupporting

confidence: 92%

Reluctance machines incorporating high temperature superconducting materials on the rotor

Rodrigues

Pires

2010

Physica C: Superconductivity

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“…On the other hand, the exploitation of hysteresis in high temperature superconducting materials, when this material builds the rotors of electric motors, results in higher torque values than those obtained in hysteresis motors with ferromagnetic rotors, i.e., higher power density is obtained in comparison with conventional hysteresis motor [3,4,5,6,7]. This higher power density allows considering applications like transportation or variable load winch drives, where the changing of power and torque are the normal operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Studies and Test Results of a Superconducting Hysteresis Motor with Multiphase Windings and Variable Number of Magnetic Poles

Dionísio¹,

Pina²,

Inácio³

et al. 2013

IFIP Advances in Information and Communication Technology

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Abstract. In this paper a procedure for determining the number of different synchronous speeds that can be obtained from the stator of a drum motor as a function of the number of slots is presented. This preliminary study is foreseen for a hysteresis high-temperature superconducting motor, but the approach is directly applied in conventional motors. The targeted device has multiphase windings, in order to achieve full flexibility in torque-speed space through electronic variation of magnetic poles. Simulations are performed in order to achieve a qualitative understanding of the behaviour of the motor, namely in what concerns to torque and settling times from initial to synchronous speed. A prototype with eighteen slots in the stator and a bulk YBCO rotor is described and built, and experimental values of torque are obtained.

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“…A decrease of rotor sizes leads to a decrease of the inertial moment of the motor that is of great importance for the case of work in the regime of often reverse (for example to guide looms or stamping presses, special stands for automobile testing etc.). It has turned out that the most efficient use of the bulk superconductors is in the reluctance-type motors [1]. High critical current density and a high level of trapped magnetic field are among the requirements for SC materials, i.e., the high level of magnetic energy that the material can accumulate, and the high mechanical characteristics, because the superconductive material is permanently subjected to the essential stresses: exerted by the magnetic field and by thermal strains as a result of thermo-cycling from room temperature down to the working temperatures.…”

Section: Introductionmentioning

confidence: 99%

Modern superconductive materials for electrical machines and devices working on the principle of levitation

Prikhna

2006

Low Temperature Physics

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The peculiarities of high-pressure synthesis of highly dense nanostructural MgB 2 -based superconductive materials, of thermobaric treatment of MT-YBCO (melt-textured YBa 2 Cu 3 O 7-dbased superconductor), high-pressure sintering of YBa 2 Cu 3 O 7-d , oxygenation of MT-YBCO under high isostatic pressure of oxygen and processes of formation of superconductive junctions between MT-YBCO blocks are considered. The attained level of superconductive and mechanical properties of such materials and junctions make them promising for application in cryogenic devices working on the principle of levitation: electricmotors, generators, pumps for liquid-gas transfer, magnetic bearings, flywheels, fault current limiters, maglev transport, etc. High-pressure synthesized MgB 2 (with Ti additions) blocks were for the first time tried in the superconductive electricmotor at 20 K and demonstrated an efficiency similar to MT-YBCO (at the same working temperature).

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High output power electric motors with bulk HTS elements

Cited by 31 publications

References 1 publication

Reluctance machines incorporating high temperature superconducting materials on the rotor

Reluctance machines incorporating high temperature superconducting materials on the rotor

Preliminary Studies and Test Results of a Superconducting Hysteresis Motor with Multiphase Windings and Variable Number of Magnetic Poles

Modern superconductive materials for electrical machines and devices working on the principle of levitation

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