Alstom Technology Limited

General Electric Technology Gmbh

Université Grenoble Alpes

Supergrid Institute

Jose Maneiro

David Reginald Trainer

Colin Charnock Davidson

Carl David Barker

Nnamdi Okaeme

Kevin J Dyke

Seddik Bacha

Florent Morel

David Frey

Juan David Paez Alvarez

Piotr Dworakowski

A DC to DC converter for converting voltage between two voltage levels is described. The converter comprises a plurality of capacitors and switch units and is controllable between a first and second commutation state. In the first commutation state, the converter is configured for connection to higher voltage terminals and the capacitors are connected in series. In the second commutation state, the converter is configured for connection to lower voltage terminals, and the capacitors are connected to form at least two branches connected in parallel, the branches comprising a series connection of at least two capacitors. In some embodiments, one or more intermediate commutation states may also be provided.

Converter

A control circuit comprising: first and second terminals for respective connection to first and second power transmission lines; a current transmission path extending between the first and second terminals and having first and second current transmission path portions separated by a third terminal, either or both of the first and second current transmission path portions including at least one module, the or each module including at least one energy storage device; an auxiliary terminal for connection to ground or the second power transmission line; an energy conversion block for removing energy from the power transmission lines, the energy conversion block extending between the third and auxiliary terminals such that the energy conversion block branches from the current transmission path, the energy conversion block including at least one energy conversion element; and a control unit which selectively removes the or each energy storage device from the current transmission path.

Control circuit for excess energy removal in power transmission lines

Growing community of inventors

Horgues, France

Jose Maneiro