Hitachi Energy Switzerland Ag

Other

Abb Research Ltd.

Abb Technology Ag

Abb Schweiz Ag

Hitachi Energy Ltd

American Superconductor Corporation

Abb Power Grids Switzerland Ag

Harry Zueger

Willi Paul

Dietrich Bonmann

Philippe Stefanutti

Gilbert N Riley, Jr

Alexander Otto

Gregory L Snitchler

Swarn S Kalsi

Martin Lakner

Peter R Roberts

Craig J Christopherson

Toufann Chaudhuri

Jan Poland

Steven Fleshler

Stephane Isler

Yoann Alphand

Ralph P Mason

Nicolas Hugo

Alessandro Zanarini

Yann Cuenin

Georges Dormia

Blaise Thorens

Bernard Descollaz

Robert C Diehl

Ming Zhang

Raphael Kegelin

Thomas Hertwig

Vincent Brungard

Gilber N Riley

To determine a three-dimensional layout of electrical connections of an electric component, a processor executes a path optimization routine to determine three-dimensional routes for a plurality of electrical connections of the electric component. A conflict management is performed to generate conflict-free three-dimensional routes for the plurality of electrical connections.

Method of determining a three-dimensional layout of electrical connections of an electric component

A dual-powered railroad vehicle is provided. The vehicle includes a combustion engine having a first cooling circuit; a traction transformer having a second cooling circuit; and at least one radiator for dissipating thermal energy to surrounding air. The first cooling circuit and the second cooling circuit are configured to dissipate thermal energy via the at least one radiator. Further, a method for operating a dual-powered railroad vehicle is provided.

Cooling system and method for a dual-powered railroad vehicle

The present disclosure is concerned with a multilevel converter including a transformer arrangement comprising at least two transformer units, each with primary and secondary windings and a transformer core structure. The latter are merged into one shared transformer core comprising at least one return limb that is part of the closed magnetic flux paths of the at least two transformer units. Sharing return limbs among individual transformer units, in particular when fed with primary voltage signals that have a certain phase shift between each other, helps to reduce the volume and weight as compared to an individual transformer core structure for each of the transformer units. The multilevel converter is beneficially used in railway traction applications.

Multilevel converter and method of converting a supply voltage

An elongated current limiting composite material comprising one or more high-temperature superconductor filaments and a second electrically conductive member, which may include a sheath of high bulk resistivity surrounding the filament. The current limiter exhibits dissipation in the range of 0.05-0.5 V/cm at currents of 3-10 times the operating current, thereby minimizing fault currents and improving recovery capability.

Current limiting composite material

In a current limiting arrangement based on a superconducting transformer ( ), a load ( ) can be supplied with power without any interruption by providing an auxiliary winding ( ) in parallel with the superconducting primary winding ( ) of the transformer ( ). This auxiliary winding ( ) carries the excess current in the event of a short circuit and allows the superconducting primary winding ( ), which has been heated due to the current limiting, to cool down. Once the short circuit has been cleared, the latter winding can once again carry the rated current, without any losses, immediately. The auxiliary winding ( ) is composed of a normally conductive material and has an additional stray impedance.

Arrangement for current limiting using a superconductor transformer

Growing community of inventors

Geneva, Switzerland

Harry Zueger