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:
Jul. 23, 2013
Filed:
Mar. 18, 2010
Prasad Pyboyina, N. Chelmsford, MA (US);
Michael J. Ingemi, Norwood, MA (US);
Prasad Pyboyina, N. Chelmsford, MA (US);
Michael J. Ingemi, Norwood, MA (US);
American Power Conversion Corporation, West Kingston, RI (US);
Abstract
A front-end converter in an uninterruptible power supply system is described. In an exemplary design, a front-end converter includes a boost circuit having first and second inputs, positive, negative, and neutral output nodes, an inductor, AC inputs, a battery, and first and second devices. The boost circuit is configured to provide a positive capacitor voltage between the positive and neutral nodes and to provide a negative capacitor voltage between the negative and neutral nodes. The first device selectively couples the inductor to a first AC input or a positive port of the battery and the second device selectively couples a negative port of the battery to the second input. The inductor is coupled to the first input and is shared between an online mode of the converter and an on-battery mode of the converter. The battery is coupled through the inductor to the first input during the on-battery mode.