Title:
SWITCH ELEMENT, MOTOR DRIVE CIRCUIT, MOTOR DRIVE METHOD, AND ELECTRICAL ROTATING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/069894
Kind Code:
A1
Abstract:
Provided is a switch element having: a switch core material 61 that is formed from a superconducting material capable of transitioning from a normal conducting state above the critical field to a superconducting state below the critical field; a critical magnet 62 that comprises a superconducting material and applies the magnetic field for the transition to the switch core material 61; and a control magnet 63 that is positioned between the switch core material 61 and the critical magnet 62 and controls the magnetic field applied from the critical magnet 62 to the switch core material 61. The switch core material 61 and the critical magnet 62 are each connected to a permanent current circuit E that is formed on a closed circuit by a permanent current switch ES. Switch elements of a motor drive circuit can be made to open and close using permanent current.
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Inventors:
KITADA YASUO (JP)
Application Number:
PCT/JP2018/036809
Publication Date:
April 11, 2019
Filing Date:
October 02, 2018
Export Citation:
Assignee:
KITADA ROTARY ENJINE LLC (JP)
International Classes:
H01L39/16; H01L39/14; H02K55/02; H02M7/48; H02P25/22; H02P27/06
Domestic Patent References:
| WO2016042821A1 | 2016-03-24 |
Foreign References:
| JPH10107331A | 1998-04-24 | |||
| JPH10107330A | 1998-04-24 | |||
| JP2009219332A | 2009-09-24 | |||
| JP2015173583A | 2015-10-01 | |||
| JP2003153579A | 2003-05-23 | |||
| JP2004324619A | 2004-11-18 | |||
| JP2010241262A | 2010-10-28 |
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