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:
Jun. 06, 2006
Filed:
Jan. 26, 2005
Antti Tarkiainen, Riihimäki, FI;
Reijo Komsi, Helsinki, FI;
Antti Tarkiainen, Riihimäki, FI;
Reijo Komsi, Helsinki, FI;
ABB Oy, Helsinki, FI;
Abstract
A method in connection with a network inverter, an LCL network filter () being connected between the network inverter () and network (), and the network inverter being arranged to operate as an active converter of harmonic components of electricity, and the method comprises the steps of forming a current reference () for the network inverter () for producing a desired voltage, selecting a harmonic electric component (v), the proportion of which needs to be changed, forming a current reference () altering the selected harmonic component (v), summing the generated current reference () altering the selected harmonic component with the current reference () of the network inverter to produce a summed current reference (), and controlling the network inverter with the summed current reference () in a coordinate system bound to the virtual flux linkage of the network inverter by using DTC control.