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:
May. 18, 2021
Filed:
Nov. 15, 2017
Siemens Aktiengesellschaft, Munich, DE;
Liviu Mihalache, Valencia, PA (US);
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for controlling multiple switching devices (--) of a multilevel converter () includes providing a plurality of carrier signals (C-C) and a reference signal (), the reference signal () having a waveform range divided in a plurality of contiguous bands (B-B), dynamically allocating the plurality of carrier signals (C-C) to the multiple switching devices (--), and generating pulse width modulation signals () to generate switching events of the multiple switching devices (--) based on a comparison of dynamically allocated carrier signals (C-C) with the reference signal (), wherein the plurality of carrier signals (C-C) have a phase shift between the carrier signals (C-C), and wherein the plurality of carrier signals (C-C) are dynamically allocated to the multiple switching devices (--) such that for each switching device (--) the plurality of carrier signals (C-C) are rotated and selected based on a position of the reference signal () with respect to the plurality of bands (B-B).