Development of a 15 kW Motor With a Fixed YBCO Superconducting Field Winding

Author

Iwakuma, Masataka ; Tomioka, Akira ; Konno, Masayuki ; Hase, Yoshiji ; Satou, Toshihiro ; Iijima, Yoshihiro ; Saitoh, Takashi ; Yamada, Yutaka ; Izumi, Teruo ; Shiohara, Yuu

Author_Institution

Kyushu Univ., Fukuoka

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

1607

Lastpage

1610

Abstract

We developed a 15 kW synchronous motor with a fixed superconducting field winding. It was 8-pole type. Each field coil was a racetrack-shaped single pancake wound with a YBCO superconducting tape. It was fabricated by IBAD-PLD method and 10 mm in width. The rotating armature was composed of a copper winding and an iron core. The field coils were conduction-cooled down to 20 to 30 K through a copper pipe attached to the copper coil flange, in which helium gas was forced-flowed. The completed motor was first tested in the Suzuka factory of Japan motor and Generator Co. Ltd. before shipping as usual. Then it was moved to the test site of the Nagasaki shipyard of Mitsubishi Heavy Industry Ltd. and installed into a ship propulsion test system, which had a propeller with a diameter of 0.5 m. We verified the quite stable underwater operation and the output power of 15 kW-360 rpm as designed.

Keywords

barium compounds; high-temperature superconductors; machine windings; superconducting machines; superconducting tapes; synchronous motors; yttrium compounds; IBAD-PLD method; YBCO superconducting tape; YBa₂Cu₃O₇; copper winding; field coil; fixed YBCO superconducting field winding; iron core; power 15 kW; racetrack-shaped single pancake; rotating armature; ship propulsion test system; synchronous motor; temperature 20 K to 30 K; Flanges; Helium; Iron; Production facilities; Superconducting coils; Superconducting films; Synchronous motors; System testing; Wounds; Yttrium barium copper oxide; Conduction-cool; YBCO; motor; superconductor;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.898480

Filename

4277470