Device and method for controlling a load flow in an alternating-voltage network

US10468884B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Friedemann Augsburger · Altdorf, DE
• Dominik Ergin · Baiersdorf, DE
• Hans-Joachim Knaak · Erlangen, DE
• Andreas Philipp · Winkelhaid, DE
• Jochen Schaefer · Schnaittach, DE

Key dates

• Filing date: Dec 14, 2015
• Grant date: Nov 5, 2019
• Expiry date: Dec 14, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E40/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A device controls a load flow in an alternating-voltage network. The device is distinguished by a module series circuit of two-pole switching modules that can be inserted in series into a phase line of the alternating-voltage network. Each switching module has an energy store and controllable power semiconductors that can be switched on an off and each switching module can be controlled in such a way that a switching-module voltage can be produced at the poles thereof, which switching-module voltage corresponds to a positive or negative energy-store voltage or a voltage having the value of zero. A control apparatus for controlling the switching modules is provided, which control apparatus is configured to control the switching modules in such a way that a periodic longitudinal voltage can be produced at the module series circuit. A method for controlling a load flow in an alternating-voltage network is performed by the device.