Controllability of HTS Induction/Synchronous Machine for Variable Speed Control

Author

Kitano, Hrioaki ; Nakamura, T. ; Sekiguchi, D. ; Amemiya, N. ; Itoh, Yoshio ; Yoshikawa, Masatoshi ; Ohashi, Yoshimasa ; Okumura, Naoki

Author_Institution

Kyoto Univ., Kyoto, Japan

Volume

23

Issue

3

fYear

2013

fDate

Jun-13

Firstpage

5202505

Lastpage

5202505

Abstract

Our group has been studying a high-temperature superconductor induction/synchronous machine (HTS-ISM). This motor has the same structure as a conventional induction motor. Replacing secondary windings with HTS windings, however, the HTS-ISM has several intrinsic features, i.e., high torque density and high efficiency. In this paper, we established a maximum efficiency control method for the HTS-ISM. This method is based on the electrical equivalent circuit and the optimized excitation condition. We examined the performance of this operation in comparison with the conventional vector control, in which magnetizing current is fixed to be constant. As a result, we found that the HTS-ISM´s rotation characteristics were improved by the developed maximum efficiency operation.

Keywords

controllability; equivalent circuits; induction motors; machine control; synchronous motors; HTS induction/synchronous machine; HTS-ISM; controllability; electrical equivalent circuit; high-temperature superconductor induction/synchronous machine; induction motor; variable speed control; High temperature superconductors; Induction motors; Resistance; Rotors; Synchronous motors; Torque; Windings; Electric vehicle; excitation condition; high-temperature superconductor induction/synchronous machine (HTS-ISM); maximum efficiency operation; optimum magnetizing current; vector control;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2246756

Filename

6461067