A trial manufacturing of 0.2kWh class flywheel rotor supported by superconducting magnetic bearing for energy storage system

Autor:	Yasukata Miyagawa, Hirochika Ueyama, Ryoichi Takahata, Hironori Kameno, Humihiko Ishikawa, Hiromasa Higasa
Rok vydání:	1997
Předmět:	Engineering Bearing (mechanical) Rotor (electric) business.industry Magnetic bearing Mechanical engineering Structural engineering Industrial and Manufacturing Engineering Flywheel law.invention law Magnet Vacuum chamber Electrical and Electronic Engineering business Pinning force Induction motor
Zdroj:	IEEJ Transactions on Industry Applications. 117:1132-1138
ISSN:	1348-8163 0913-6339
DOI:	10.1541/ieejias.117.1132
Popis:	A flywheel rotor whose a main shaft had two pieces of flywheel disk and one magnet was designed and manufactured. The flywheel was made of CFRP material which is light weight and has high tensile strength. The magnet was hooped by CFRP in order to prevent from centrifugal burst. The rotor was suspended by a superconducting magnetic bearing in axial direction and active magnetic bearings in radial direction. The superconducting magnetic bearing was made of Y Ba2Cu3O7-x which had a strong pinning force. It was stably accelerated up to 16, 500rpm by a induction motor in a vacuum chamber and then its energy storage value was 176Wh. The rotor design, bearing and rotational properties of the rotor was discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fbab5250fdb604e7f6cdf9394fd4aa99 https://doi.org/10.1541/ieejias.117.1132 Zobrazit plný text záznamu