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:
Aug. 01, 2006
Filed:
Sep. 09, 2005
Janne Salomäki, Helsinki, FI;
Janne Salomäki, Helsinki, FI;
ABB Oy, Helsinki, FI;
Abstract
A method of controlling of an induction machine using an inverter is disclosed with output LC filter. The method includes determining an inverter output current vector (), determining an inverter output voltage vector (), and forming a full-order observer having a system matrix () and gain vector (). The observer produces an estimated rotor flux linkage vector (), an estimated stator current vector (), an estimated stator voltage vector () and an estimated inverter output current vector (). An estimation error (−) of the inverter output current vector is determined, and a speed adaptation law is formed based on the estimation error of the inverter output current vector for determining an estimate for electrical angular speed ({circumflex over (ω)}) of the induction machine. The induction machine is controlled based on the produced estimates and a measured inverter output current.