2013 Fiscal Year Final Research Report

Study on Reduction Method of AC Loss and Optimization of HTS Coil for Rotating Machines

Research Project

Project/Area Number	23560320
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Power engineering/Power conversion/Electric machinery
Research Institution	Niigata University
Principal Investigator	FUKUI Satoshi 新潟大学, 自然科学系, 准教授 (70293199)
Project Period (FY)	2011 – 2013
Keywords	高温超伝導コイル / 交流損失 / 高温超伝導回転機
Research Abstract	Power meter method and boil-off method were developed to measure the AC loss in HTS coils in this study. These methods were applied for the AC loss measurement of HTS model coil. The theoretical model to analyze the AC in HTS coil based on the AC loss data of the HTS tape was also developed. It was confirmed that the measured results of the AC loss in the model coils by the power method and the boil-off method were well explained by the theoretical model. The optimization of the HTS coil used in a rotational machines was theoretically investigated by using the model. The reduction method of the AC loss in the HTS coil by introducing the tilt-winding was proposed and the effect of AC reduction was experimentally verified.