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. 25, 2011
Filed:
Feb. 20, 2009
Beat Ronner, Maisprach, CH;
Osvin Gaupp, Baden, CH;
Beat Ronner, Maisprach, CH;
Osvin Gaupp, Baden, CH;
ABB Schweiz AG, Baden, CH;
Abstract
A method for operating a converter circuit is disclosed. Such a converter circuit has a converter unit with a multiplicity of actuatable power semiconductor switches and is connected to a three-phase electrical AC mains system and in which the actuatable power semiconductor switches are actuated by means of an actuation signal (S) formed from a control signal (S), and the control signal (S) is formed by adjusting an H-th harmonic component of system currents (i) to a system current setpoint value (i), wherein H=1, 2, 3 . . . . For the purpose of reducing a harmonic component in the system voltages, the system current setpoint value (i) is formed by adjusting the absolute value of an H-th harmonic component of the system voltages (u) to the absolute value of a prescribable system voltage setpoint value (u). An exemplary apparatus carries out the method.