Electrical transmission or interconnection systems – Plural load circuit systems – Common conductor or return type
Reexamination Certificate
2008-05-27
2008-05-27
Sherry, Michael (Department: 2836)
Electrical transmission or interconnection systems
Plural load circuit systems
Common conductor or return type
C307S104000, C307S105000
Reexamination Certificate
active
07378754
ABSTRACT:
A three-phase filter has first, second, and third power source connectors and first, second, and third load connectors. A separate phase line filter is connected between each pair of power source and load connectors. Each phase line filter includes a line winding connected between the power source and load connectors for a phase line and includes a first shunt winding, resistor and capacitor connected in series between that load connector and the load connector for another phase line. The line and shunt windings for a given phase line filter are wound on a core in directions so that one winding produces magnetic flux having an opposite polarity to the magnetic flux produced by the other winding. The magnetic coupling of those windings, mitigates harmonic currents that otherwise flow in either direction between the power source and load connectors.
REFERENCES:
patent: 1953233 (1934-04-01), Jonas
patent: 3379961 (1968-04-01), Kobayashi et al.
patent: 3440516 (1969-04-01), Kaiser
patent: 3509507 (1970-04-01), Specht
patent: 3535542 (1970-10-01), Gilsig
patent: 4677401 (1987-06-01), Nonaka et al.
patent: 4697126 (1987-09-01), Jarvinen et al.
patent: 4710735 (1987-12-01), Blahous et al.
patent: 4967097 (1990-10-01), Mehl
patent: 5434455 (1995-07-01), Kammeter
patent: 5499178 (1996-03-01), Mohan
patent: 5619080 (1997-04-01), Pennington et al.
patent: 5982645 (1999-11-01), Levran et al.
patent: 6011705 (2000-01-01), Duca et al.
patent: 6127743 (2000-10-01), Levin et al.
patent: 6339265 (2002-01-01), Levin et al.
patent: 6549434 (2003-04-01), Zhou et al.
patent: 6605882 (2003-08-01), Boudrias et al.
patent: 6844794 (2005-01-01), Lauri
patent: 2002/0105816 (2002-08-01), Boudrias et al.
patent: 2003/0160515 (2003-08-01), Yu et al.
patent: 2004/0183377 (2004-09-01), Levin et al.
patent: 2004/0240237 (2004-12-01), Okayama et al.
patent: 2005/0063202 (2005-03-01), Stancu et al.
Amaya Carlos
Greenberg & Traurig, LLP
MTE Corporation
Sherry Michael
LandOfFree
Three-phase harmonic reduction filter for bidirectional... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-phase harmonic reduction filter for bidirectional..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-phase harmonic reduction filter for bidirectional... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2768174