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. 14, 2012
Filed:
Feb. 07, 2008
Damir Klikic, Waltham, MA (US);
Pyboyina Msvvsv Prasad, Bangalore, IN;
Rajesh Ghosh, Bangalore, IN;
Mahima Agrawal, Bangalore, IN;
Damir Klikic, Waltham, MA (US);
Pyboyina Msvvsv Prasad, Bangalore, IN;
Rajesh Ghosh, Bangalore, IN;
Mahima Agrawal, Bangalore, IN;
American Power Conversion Corporation, West Kingston, RI (US);
Abstract
Systems and methods are provided for distributing power to a load by controlling an uninterruptible power supply that has an inverter and a filter, where the filter has an inductor and a capacitor. The systems and methods apply a pulse width modulation control signal to the inverter, sample inverter inductor current and compare the inductor current to a reference current. A duty cycle of the pulse width modulation control signal is adjusted to drive the inductor current at a second sampling time to a value substantially equal to a reference current at a first sampling time. The systems and methods can filter harmonic distortion from output signals and control uninterruptible power supply output.