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:
Oct. 08, 2013
Filed:
Feb. 18, 2011
Antonio Coccia, Baden, CH;
Gerardo Escobar, Baden, CH;
Leonardo-augusto Serpa, Zurich, CH;
Mikko Paakkinen, Vantaa, FI;
Sami Pettersson, Wettingen, CH;
Antonio Coccia, Baden, CH;
Gerardo Escobar, Baden, CH;
Leonardo-Augusto Serpa, Zurich, CH;
Mikko Paakkinen, Vantaa, FI;
Sami Pettersson, Wettingen, CH;
ABB Research Ltd, Zurich, CH;
Abstract
A method of controlling the grid-side current of a single-phase grid-connected converter having an LCL filter connected between the output of the converter and the grid includes measuring a grid voltage and at least one signal in a group of signals consisting of a grid-side current, a converter-side current and a capacitor voltage, estimating the fundamental component of the grid voltage, forming a grid-side current reference, a converter-side current reference and a capacitor voltage reference for the grid-side current of the LCL filter, forming estimates for the non-measured signals in the group of signals, forming a grid-side current difference term, a converter-side current difference term and a capacitor voltage difference term, and controlling the output voltage of the converter based on the grid voltage, a formed injection term and a formed estimate of the harmonic distortion term to produce a grid side current corresponding to the current reference.