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. 22, 2024
Filed:
Aug. 27, 2019
Siemens Energy Global Gmbh & Co. KG, Munich, DE;
Felix Kammerer, Erlangen, DE;
Sebastian Semmler, Nuremberg, DE;
Siemens Energy Global GmbH & Co. KG, Munich, DE;
Abstract
A method for precharging half bridge modules and full bridge modules of a modular multilevel converter includes providing the modular multilevel converter with at least one phase module branch with half bridge modules and full bridge modules connected electrically in a series circuit, and each of the half bridge modules and full bridge modules having at least first and second module connections, two electronic switching elements and an electrical energy store. In a first charging phase after connecting the multilevel converter to an energy supply network with the electronic switching elements of the half bridge modules and the full bridge modules not actuated, the energy stores of the half bridge modules and the full bridge modules are charged in an uncontrolled manner. In a second charging phase, the electronic switching elements of at least some full bridge modules are actuated such that the half bridge modules are charged further.