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:
Dec. 05, 2023
Filed:
Nov. 25, 2019
Siemens Aktiengesellschaft, Munich, DE;
Harald Wiessmann, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a method for operating a self-commutated inverter, a direct voltage is supplied from a direct voltage circuit to electronic switches, which are controlled in an open-loop manner by space vector modulation, for generating a three-phase output voltage. The three-phase output voltage is supplied to a three-phase output filter arranged downstream of the electronic switches and coupled to the direct voltage circuit, allowing common mode portions of filter input currents of the output filter to flow into the direct voltage circuit. Filter output currents of the three-phase output filter are controlled in a closed-loop manner, and a zero-system voltage of the filter input voltages of the output filter is controlled in a closed loop manner as a function of a target voltage space vector of the space vector modulation and as a function of the filter input currents to suppress oscillations in a zero system of the filter input currents.