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:
May. 20, 2003
Filed:
Apr. 27, 2000
James Edward Layton, Chelsea, OK (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An inductance balancer is connected between a drive and a flat three phase power transmission cable employed to carry power to a remote load. The inductance balancer includes a first inductance device (e.g., a single wound inductor) connecting the center cable conductor to the drive and raising the total effective inductance of the center cable conductor to the inductance of either of the outer cable conductors at maximum inductance. The inductance balancer also includes a second inductance device connecting both outer conductors to the drive and adding an inductance equal to that of the first inductance device when current exists only on an outer conductor and the center conductor, but adding no inductance to the outer conductors when current exists only on those two conductors. The second inductance device may be a dual wound inductor with each series connected to an outer conductor so that current carried or returned by one outer conductor travels through the inductor in an opposite direction to current carried or returned by the opposite outer conductor. The inductances resulting from equal currents on the outer conductors will therefore cancel, but the inductance resulting from currents in only one outer conductor and the center conductor will not. The result is a degree of equalization of total inductance on all conductors for all current phasings, removing the flat cable characteristics from the system.