HTSC Bulk Magnetizing Control System for Cryogenic Alternators


Article Preview

The first HTSC alternators developed and tested mainly contained the bulks on the rotor. The presentation covers the problem of HTSC bulks magnetizing control in an assembled cryogenic alternator with axial flux. Cylindrical bulks are positioned on the rotor of a synchronous machine and form a multi-pole excitation system. The trapped magnetic field may vary under a number of processes, magnetic flux creep included. A special system to control the value of bulk magnetization and the temperature in the cryogenic zone is developed. Similar system may by applied in cryogenic disc-type alternators with permanent magnets on the rotor.



Edited by:

A.G. Mamalis, Masato Enokizono, Antonios Kladas, T. Sawada, Mustafa Güden and Prof. Mustafa M. Demir




L. Chubraeva et al., "HTSC Bulk Magnetizing Control System for Cryogenic Alternators", Materials Science Forum, Vol. 915, pp. 53-58, 2018

Online since:

March 2018




* - Corresponding Author

[1] Kovalev L.K. et al. Electrical Machines and Devices Based on Bulk High-Temperature Superconductors. M., FISMATLIT. 2010. 396 p.

[2] Chubraeva et al. Results of Development and Investigation of HTSC Electric Power Installation. Japmed 5, Abstracts, 2007. 2 p.

[3] Werfel et al. HTS Bulks for Magnetic Application. Braunschweiger Supraleiter Seminar. (2013).

[4] Zou J. et al. Influence of Time-Varying External Magnetic Fields on Trapped Fields in Bulk Superconductors. IEEE trans. on applied superconductivity, vol. 25, no. 3, 2015. P. 490-505.

[5] Habisreuther T. Bulk YBCO for Flywheels and Other Power Applications. Proc. of ASSE'04, Budapest. – 2004. P. 131.

[6] Werfel F.N. et al. Large Scale Bulks for Magnetic Application. Physica C, № 484, 2013. P. 6-11.

[7] Miki M. et al. Applied HTS Bulks and Wires to Rotating Machines for Marine Propulsion. AIP Conference Proceedings. №1218, 2010. 6 р.

[8] Evseev Eu.V., Timofeev S.S., Chubraeva L.I. System for Control of High-Temperature Superconductor Bulks Magnetizing in Cryogenic Electrical Machines. Sensors and Systems. 2016, № 1. Р. 35-40. (in Russian).

Fetching data from Crossref.
This may take some time to load.