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. 09, 2010
Filed:
Jun. 21, 2004
Djordje Garabandic, Burnaby, CA;
Djordje Garabandic, Burnaby, CA;
Xantrex International, St. Michael, BB;
Abstract
An inverter operable to supply high power factor electrical power to an AC load including an AC power grid includes a DC bus and a DC to AC converter section of the full bridge type. The inverter further includes a voltage sensor configured to produce an instantaneous output voltage signal representing instantaneous output voltage of the inverter, a rectification circuit configured to produce a rectified output voltage signal, a power signal generator, an output current sensor configured for sensing an output current of the inverter, a rectification circuit configured to produce the rectified output current signal, a sign circuit for producing a signal representing the sign of the output voltage and a control apparatus. The control apparatus includes a scaled rectified voltage signal generator, a pulse width modulation (PWM) signal generator configured to produce a pulse width modulation signal in response to the scaled rectified voltage signal and the rectified output current signal and a switching leg controller circuit configured to control the full bridge switches.