TY - JOUR
T1 - Influence of high harmonics of magnetic fields on trapped magnetic fluxes in HTS bulk
AU - Yamagishi, K.
AU - Miyagi, D.
AU - Tsukamoto, O.
N1 - Funding Information:
This work was supported in part by MEXT Grant-in-Aid for Scientific Research (C) (21560292).
Publisher Copyright:
© 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of the guest editor.
PY - 2012
Y1 - 2012
N2 - Various kinds of HTS bulk motors are proposed and have been developed. Generally, those motors are driven by semiconductor inverters and currents fed to the armature windings contain high harmonics. Therefore, the bulks are exposed to high harmonics magnetic fields and AC losses are produced in the bulks. The AC losses deteriorate the efficiency of the motors and cause temperature rise of the bulks which decrease the trapped magnetic fluxes of the bulks. Usually, electro-magnetic shielding devices are inserted between the bulks and armature windings. However, the shielding devices degrade compactness of the motors. Therefore, it is important to have knowledge of the influence of the high harmonics magnetic fields on the AC losses and trapped magnetic fluxes of the bulk for optimum design of the shielding devices. In this work, the authors experimentally study the influence of high harmonics magnetic fields.
AB - Various kinds of HTS bulk motors are proposed and have been developed. Generally, those motors are driven by semiconductor inverters and currents fed to the armature windings contain high harmonics. Therefore, the bulks are exposed to high harmonics magnetic fields and AC losses are produced in the bulks. The AC losses deteriorate the efficiency of the motors and cause temperature rise of the bulks which decrease the trapped magnetic fluxes of the bulks. Usually, electro-magnetic shielding devices are inserted between the bulks and armature windings. However, the shielding devices degrade compactness of the motors. Therefore, it is important to have knowledge of the influence of the high harmonics magnetic fields on the AC losses and trapped magnetic fluxes of the bulk for optimum design of the shielding devices. In this work, the authors experimentally study the influence of high harmonics magnetic fields.
KW - Ac loss
KW - Harmonics
KW - Hts bulk
KW - Motor
KW - Trapped magnetic flux
UR - http://www.scopus.com/inward/record.url?scp=84960334260&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84960334260&partnerID=8YFLogxK
U2 - 10.1016/j.phpro.2012.06.106
DO - 10.1016/j.phpro.2012.06.106
M3 - Conference article
AN - SCOPUS:84960334260
VL - 36
SP - 1062
EP - 1066
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3892
T2 - Superconductivity Centennial Conference, SCC 2011
Y2 - 18 September 2011 through 23 September 2011
ER -