Siemens Aktiengesellschaft

Transgrid Solutions Inc.

Mojtaba Mohaddes Khorassani

Dominik Ergin

Hans-Joachim Knaak

A voltage sourced converter for converting power from DC to AC features a chain of power electronic modules in between which each AC connection of the converter is made so as to form a series string or arm of the modules on at least one side of that connection to the chain which are controlled so as to produce at this connection an AC voltage waveform.

Multi-level voltage sourced converter

A device switches a direct current. The device contains an operating current branch in which a mechanical switch is arranged, a protective switch connected to the operating current branch for interrupting the current flow in the operating current branch, a capacitor branch connected in parallel with the operating current branch in which capacitor branch a capacitor is arranged, and a damping apparatus which has a resistance element. The damping apparatus is arranged in the capacitor branch in series with the capacitor or in the operating current branch in series with the mechanical switch, which damping apparatus can be bypassed by a bypass switch connected in parallel with the damping apparatus.

Growing community of inventors

Winnipeg, Canada

Mojtaba Mohaddes Khorassani