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Title: Power flow control using distributed saturable reactors

Patent ·
OSTI ID:1240403

A magnetic amplifier includes a saturable core having a plurality of legs. Control windings wound around separate legs are spaced apart from each other and connected in series in an anti-symmetric relation. The control windings are configured in such a way that a biasing magnetic flux arising from a control current flowing through one of the plurality of control windings is substantially equal to the biasing magnetic flux flowing into a second of the plurality of control windings. The flow of the control current through each of the plurality of control windings changes the reactance of the saturable core reactor by driving those portions of the saturable core that convey the biasing magnetic flux in the saturable core into saturation. The phasing of the control winding limits a voltage induced in the plurality of control windings caused by a magnetic flux passing around a portion of the saturable core.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-BATTELLE, LLC (Oak Ridge, TN)
Patent Number(s):
9,261,890
Application Number:
13/984,196
OSTI ID:
1240403
Resource Relation:
Patent File Date: 2012 Feb 22
Country of Publication:
United States
Language:
English

References (8)

Magnetic regulator topologies for dimmable electronic ballasts conference July 2010
Steady-state and transient stability of 500 kV long-distance AC transmission lines with magnetically controlled shunt reactors conference June 2005
Suppression of Voltage Flicker by Saturable Reactor Operating under Forced Magnetization conference September 2007
Alternating Electric Current Transformer patent May 1952
Variable leakage transformer and control circuit therefore patent May 1982
Switched mode DC to DC converter using variable leakage transformer patent July 1982
Multi-phase current balancing compensator patent September 1982
Method and apparatus for limiting high current electrical faults in distribution networks by use of superconducting excitation in transverse flux magnetic circuit patent June 1997

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