Potential equalization system for a modular multilevel converter

US11081972B2 · kind B2 · utility

Assignee

• Siemens Energy Global GmbH & Co. KG · DE

Inventors

• Mathias Anheuer · Roßtal, DE
• Daniel Boehme · Nuremberg, DE
• Johannes Dallmeier · Geiselhöring, DE
• Christopher Eismann · Wendelstein, DE
• Johann Holweg · Zirndorf, DE
• Martin Kapelke · Nuremberg, DE
• Michael Rudek · Nuremberg, DE
• Torsten Stoltze · Herzogenaurach, DE
• Marcus Wahle · Veitsbronn, DE
• Felix Daeumler · Remptendorf, DE
• Johannes Griessl · Forchheim, DE
• Adrian Huber · Ergolding, DE
• Christian Schrammel · Burgthann, DE
• Johannes Weber · Stuttgart, DE

Key dates

• Filing date: Jun 19, 2018
• Grant date: Aug 3, 2021
• Expiry date: Jun 19, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01H31/003
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A potential equalization system for a modular multi-level converter. The converter has a plurality of converter modules and each of the modules has a direct current source. The potential equalization system includes pole contacts, which are each electrically connected to one pole of a direct current source, and at least one electrically conductive contacting element, which can be moved between a first end position in which the contacting element is electrically isolated from the converter modules and a second end position in which the contacting element contacts pole contacts of different direct current sources and can be put on ground potential.