The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 1998
Filed:
Sep. 15, 1997
Applicant:
Inventors:
Laszlo Gyugyi, Pittsburgh, PA (US);
Colin David Schauder, Murrysville, PA (US);
Scott Lawrence Williams, Voorhees, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323207 ;
Abstract
A unified power flow controller has a dc-to-dc converter which uses the dc voltage produced by a first static inverter, connected in shunt with a transmission line and providing parallel reactive compensation, to establish the magnitude of a series compensation voltage injected into the transmission line by a second static inverter. The second static inverter then only has to regulate the phase angle of the series injected voltage. With the dc-to-dc converter turned off, the two inverters are decoupled and can be operated independently even if the other inverter is not operational.