Development and testing of 10 kW fully HTS generator

Kovalev, Konstantin; Ivanov, Nikolay; Журавлев, С. В.; Nekrasova, Julia; RUSANOV, Denis V.; Kuznetsov, G. A.

doi:10.1088/1742-6596/1559/1/012137

Cited by 17 publications

(4 citation statements)

References 3 publications

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“…One of the essential operational characteristics of electric aircraft machines is reliability [6][7][8][9][10]. A fully superconducting electrical machine based on the second generation HTS tapes [11,12], Engineering created at the moment in the world, did not pass the service life tests.…”

Section: Methodsmentioning

confidence: 99%

Development of fully superconducting 5 MW aviation generator with liquid hydrogen cooling

Dezhin

Ilyasov

2022

Eureka: PE

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The use of liquid hydrogen as a fuel will be inevitable in the aviation of the future. This statement means that manufacturers will also implement liquid hydrogen for cooling all superconducting aviation equipment of an electric propulsion system. The development of fully electric aircraft is the most promising solution in this case. Scientists from the Department of electrical machines and power electronics of Moscow aviation institute have conducted calculations and theoretical researches of critical specific mass-dimensional parameters (MW/ton and MW/m3 at 21 K) of fully superconducting aviation synchronous generator of the electric propulsion system. The results are in this article. The article discusses the results 3D finite element modeling (FEM) simulation of a 5 MW fully superconducting synchronous generator with combined excitation. Superconducting armature and axial excitation windings based on second generation high temperature superconductors (HTS-2G) are located on the stator, which makes it possible to contactlessness and the absence of sliding seals. A dry gap will reduce gas-dynamic losses and increase the nominal peripheral speed of the rotor. The use of liquid hydrogen as a coolant makes it possible to significantly increase the linear load of the generator, and high current densities to reduce the cross-sectional area of the coils, which will make it possible to place them in individual cryostats in the future. Individual cryostats will allow to remove the heat release of magnetic losses from the cryogenic zone and reduce the consumption of refrigerant. For the purpose of internal redundancy of the HTS coils, the machine has a complete set of reserve winding made of ultrapure aluminum, also cooled by liquid hydrogen. If the superconducting coils get out of the stand, the generator will provide 15 % power on standby

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Section: Methodsmentioning

confidence: 99%

Development of fully superconducting 5 MW aviation generator with liquid hydrogen cooling

Dezhin

Ilyasov

2022

Eureka: PE

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“…This type of machine has more advantages, such as increasing the current density of the armature, reducing the Joule losses and decreasing the thickness of the air gap (the cryostat enclosing the whole machine), which makes it possible to achieve higher power densities and efficiencies. However, AC losses are still a significant brake on their development, even though the feasibility and efficiency have been proven through various prototypes: totally superconducting [11,12], or hybrid including permanent magnets-type inductors and superconducting armatures [13][14][15][16]. Twisted filament high-temperature superconducting tapes and MgB2 wires seem to be potential candidates for such structures [17].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on the Parameters of a Synchronous Machine Prototype with High-Temperature Superconductor Armature Windings

Menana,

Statra

2023

Condensed Matter

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In their applications in electrical machines, high-temperature superconductors (HTSs) are mainly used as inductors in synchronous machines due to the AC losses which can lead to high cryogenic costs. In this work, we show the possibility of their use as armature windings, handling some precautions. The approach is based on the combined use of modeling and measurements. The construction and the preliminary tests of a handmade prototype of an axial field HTS synchronous machine are presented. Several tests have been conducted at liquid nitrogen temperature. The measurements have been confirmed by modeling results. The preliminary tests on the prototype, in both modeling and measurements, are very promising.

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“…At present, various projects of HTS electrical machines are known [17,18]. In particular, at the Moscow Aviation Institute (MAI), machines with HTS rotor windings and copper stator windings were made, as well as fully superconducting machines [19][20][21][22][23]. However, the literature offers scarce data on the design, creation, and study of systems including various HTS devices.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are few experimental studies of such devices in the world. The first such machine in Russia has been tested at the MAI [23]. Agreement of the theoretical approaches and technological manufacturing methods has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Development of Methods for Heat Transfer Enhancement During Nitrogen Boiling to Ensure Stabilization of HTS Devices

Павленко

Кузнецов

2021

J. Engin. Thermophys.

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The paper presents a brief analysis of current achievements and key issues in the field of heat transfer and critical heat flux enhancement during boiling of cryogenic liquids and freons under various heat release laws via micro-structuring of the heat-generating surface. A review of new experimental data on the efficiency of heat transfer and critical heat flux enhancement during pool boiling via new micro-structured capillary-porous coatings created by plasma sputtering and selective laser melting/sintering (3D printing) is presented. The results of analysis of the efficiency of heat transfer and critical heat flux during boiling on heat-generating surfaces with micro-textures of different shapes and micro-profiling created by micro-deforming cutting are presented. New results obtained during nitrogen boiling under various hydrodynamical conditions on the mechanisms of sharp increase in the rate of non-stationary cooling of plates with new structured capillary-porous or low-heat-conductivity coatings with certain parameters are discussed. New results on the degree of heat transfer enhancement during boiling of liquids on micro-structured surfaces modified by the method of micro-arc oxidation are presented.

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Development and testing of 10 kW fully HTS generator

Cited by 17 publications

References 3 publications

Development of fully superconducting 5 MW aviation generator with liquid hydrogen cooling

Development of fully superconducting 5 MW aviation generator with liquid hydrogen cooling

Experimental and Numerical Investigations on the Parameters of a Synchronous Machine Prototype with High-Temperature Superconductor Armature Windings

Development of Methods for Heat Transfer Enhancement During Nitrogen Boiling to Ensure Stabilization of HTS Devices

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