Open AccessCounter-rotating electric generator for wind power plants with liquid metal energy transfer
Author(s) -
A. V. Egorov,
Yu F Kaizer,
А. V. Lysyannikov,
А. В. Кузнецов,
В. Г. Шрам,
А. И. Павлов,
M Yu Smirnov,
P A Kuznetsova
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2094/5/052018
Subject(s) - stator , rotor (electric) , electric generator , generator (circuit theory) , electrical engineering , materials science , electric potential energy , wind power , reliability (semiconductor) , liquid metal , electromagnetic coil , electric power , automotive engineering , power (physics) , mechanical engineering , engineering , physics , composite material , quantum mechanics
The problem of creating effective structures that ensure mutual rotation of the rotor and stator of an electric generator. The wide practical application of counter-rotor wind-electric generators, which provide a significant increase in specific power, is hindered by the disadvantages and low reliability of existing systems for removing electric energy from the windings of a rotating counter-rotor, due to the dry friction mode. It is possible to increase the reliability of the contact removal of electrical energy from the counter rotor (rotating stator) by replacing solid brushes with liquid metal contact groups, which will lead to a certain increase in the resistivity of the contact group, compensated by the contact area of the liquid metal with the contact ring. It is most advisable to use liquid metal contact groups based on gallium, which will raise the permissible temperature limit of operation by about 2 times compared to the achieved level to 275 °C and, thereby, additionally raise the specific power of the electric generator.