Open AccessEffect of HTS stack sectioning on pulse magnetization efficiency in a motor
Author(s) -
Anis Smara,
Vicente Climante-Alarcon,
Nikolay Mineev,
Łukasz Tomków,
B A Glowski
Publication year - 2020
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 - 10.1088/1742-6596/1559/1/012136
Subject(s) - magnetization , materials science , stack (abstract data type) , magnet , superconductivity , amplitude , pulse (music) , penetration (warfare) , magnetic field , nuclear magnetic resonance , condensed matter physics , optics , electrical engineering , voltage , physics , computer science , quantum mechanics , operations research , programming language , engineering
Stacks of HTS superconductors can be magnetized and used as a surface mounted magnet for electrical machines. Pulse field magnetization is considered as a practical method; however, the amplitude of the pulse can be limited in an electrical motor which results in an under-saturated stack with the superconducting currents penetrating only a part of it making the magnetization less efficient. A solution to this problem could be sectioning the stack along its width enabling effective penetration of the superconducting currents. In this paper we investigate the effect of sectioning of HTS surface mounted stacks on the efficiency of pulse magnetization method in trapping the flux using low pulsing field. It is shown that the sectioning of wide stacks into several narrower parts results in a higher trapped flux at low pulses. Experimental measurements are performed on a lab-scale motor to validate the theoretical analysis.