Title:
非超伝導コイルにより飽和したコアを有する故障限流器
Document Type and Number:
Japanese Patent JP2013503600
Kind Code:
A
Abstract:
A current limiting device (30, 40, 50, 60) comprising for each phase of an AC supply a closed magnetic core (31) of reduced volume and mass having first and second pairs of opposing limbs (32a, 32b; 33a, 33b), and at least one AC coil (35a, 35b) enclosing opposing limbs (33a, 33b) of the magnetic core (31) and adapted for series connection with a load. A non-superconducting DC bias coil (34) typically formed of copper encloses a limb (32a, 32b) of the magnetic core (31) for saturating each of the opposing limbs (33a, 33b) in opposite directions by the bias coil (34). Under fault conditions, the AC flux in at least one limb counteracts the DC bias flux, bringing the limb out of saturation. Preferably, current is reduced in the DC bias coils thus bringing both opposing limbs of the core out of saturation.
More Like This:
| JP4316024 | Tap changer under load |
| WO/2021/170340 | SWITCH FOR AN ON-LOAD TAP CHANGER AND LOAD TRANSFER SWITCH FOR AN ON-LOAD TAP CHANGER |
| JPH01243818 | ON-LOAD TAP CHANGER |
Inventors:
Shuki Wolfas
Joseph Yeslan
Alexander Friedman
Vladimir Rosenstein
Zvi Balheim
Joseph Yeslan
Alexander Friedman
Vladimir Rosenstein
Zvi Balheim
Application Number:
JP2012526184A
Publication Date:
January 31, 2013
Filing Date:
August 31, 2010
Export Citation:
Assignee:
BAR ILAN RESEARCH & DEVELOPMENT COMPANY LTD.
RICOR CRYOGENIC & VACUUM SYSTEMS LIMITED PARTNERSHIP
RICOR CRYOGENIC & VACUUM SYSTEMS LIMITED PARTNERSHIP
International Classes:
H01F29/04; H02H9/02
Domestic Patent References:
| JP2003009386A | 2003-01-10 | |||
| JP2003284240A | 2003-10-03 |
Foreign References:
| WO2007029224A1 | 2007-03-15 | |||
| US3219918A | 1965-11-23 |
Attorney, Agent or Firm:
Kenji Sugimura
Tatsuya Sawada
Yoshihiro Uemura
Tatsuya Sawada
Yoshihiro Uemura