1 MVA HTS-2G Generator for Wind Turbines

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Kovalev, K.L.^1 ; Poltavets, V.N.^1 ; Ilyasov, R.I.^1 ; Verzhbitsky, L.G.^2 ; Kozub, S.S.^3

Moscow Aviation Institute (National Research University), Dept. 310, 4, Volokolamskoe Shosse, Moscow

125993, Russia^1

JSC nIIEM, 11, Panfilov St., Istra, Moscow region

143502, Russia^2

Institute for High Energy Physics, 1, Nauki Sq., Protvino, Moscow region

142281, Russia^3

关键词: Design performance;    Design simulations;    Direct-drive wind turbines;    Ferromagnetic cores;    Harmonic drive;    Internal cooling;    Rotating cryostats;    Second generation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/3/032018/pdf
DOI  :  10.1088/1755-1315/87/3/032018

来源: IOP

【 摘 要 】

The calculation, design simulations and design performance of 1 MVA HTS-2G (second-generation high-temperature superconductor) Generator for Wind Turbines were done in 2013-2014 [1]. The results of manufacturing and testing of 1 MVA generator are presented in the article. HTS-2G field coils for the rotor were redesigned, fabricated and tested. The tests have shown critical current of the coils, 41-45 A (self field within the ferromagnetic core, T = 77 K), which corresponds to the current of short samples at self field. Application of the copper inner frame on the pole has improved internal cooling conditions of HTS coil windings and reduced the magnetic field in the area, thereby increased the critical current value. The original construction of the rotor with a rotating cryostat was developed, which decreases the thermal in-flow to the rotor. The stator of 1 MW HTS-2G generator has been manufactured. In order to improve the specific weight of the generator, the wave (harmonic drive) multiplier was used, which provides increasing RPM from 15 RPM up to 600 RPM. The total mass of the multiplier and generator is significantly smaller compared to traditional direct-drive wind turbines generators [2-7]. Parameters of the multiplier and generator were chosen based on the actual parameters of wind turbines, namely: 15 RPM, power is 1 MVA. The final test of the assembled synchronous generator with HTS-2G field coils for Wind Turbines with output power 1 MVA was completed during 2015.