Flux Leakage Reduction in Linear Vernier Generators Using High-Temperature Superconducting Elements
DOI:
https://doi.org/10.24160/1993-6982-2021-6-82-90Keywords:
linear electric generator, high-temperature superconducting material, Vernier principle, modeling of HTS properties, electromagnetic field calculation, float wave power plantsAbstract
The article presents the results of studies aimed at improving the power performance indicators of linear electric generators for wave power plants by reducing the flux leakages using high-temperature superconducting (HTS) inserts placed in between the teeth. The generator design involving application of the Vernier principle for magnetic flux modulation with a translator in the form of a hollow cylinder is considered. Generators of this type are used in float wave power plants driven directly by a reciprocating float, which transmits large forces at a low motion speed. The calculations were carried out using the HTS properties modeling procedure based on representing the currents induced in a superconductor in the form of magnetic moments of these currents, which made it possible to simplify the analysis of the electromagnetic field in the generator without significant additional errors. As a result, the characteristics of the electromagnetic force longitudinal components and phase winding flux linkages versus the translator displacement have been obtained. The use of HTS inserts and a distributed winding in the stator made it possible to reduce the electromagnetic leakage losses and increase the interaction force between the stator and translator. However, since the additional outlays for the cooling system and thermal insulation of the HTS elements are commensurable with the generator cost, the obtained results on improving the power performance parameters do not allow an unambiguous statement to be made about the effectiveness of the considered technical solutions.
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Для цитирования: Дроздов А.А., Курбатов П.А., Курбатова Е.П. Уменьшение магнитных потоков рассеяния в линейных генераторах Вернье с помощью высокотемпературных сверхпроводящих элементов // Вестник МЭИ. 2021. № 6. С. 82—90. DOI: 10.24160/1993-6982-2021-6-82-90
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For citation: Drozdov A.A., Kurbatov P.A., Kurbatova E.P. Flux Leakage Reduction in Linear Vernier Generators Using High-Temperature Superconducting Elements. Bulletin of MPEI. 2021;6:82—90. (in Russian). DOI: 10.24160/1993-6982-2021-6-82-90
