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:
Feb. 02, 1999
Filed:
Mar. 12, 1997
Gabriel G Suranyi, Plano, TX (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
In a partitioned power converter system having a central uninterruptible power supply ('UPS') stage couplable between a commercial power source and a peripheral stage, the central UPS stage including a primary converter that converts commercial power from the commercial power source to a distribution voltage; a battery boost converter, coupled to a battery reserve system, that boosts a battery voltage produced thereby to the distribution voltage; and mode switching circuitry that alternatively couples one of the primary converter and the battery boost converter to the peripheral stage, selective bypass circuitry and a method of increasing the efficiency of the power converter system. The selective bypass circuitry includes: (1) a controller for determining a load on the battery boost converter and (2) a bypass circuit, coupled to the controller, for coupling the battery reserve system directly to the peripheral stage when the battery boost converter is loaded less than a preselected lower limit, the bypass circuit thereby bypassing the battery boost converter and eliminating inefficiency associated therewith under light load conditions.