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Abb Technology Ag

Hitachi Energy Switzerland Ag

Abb Power Grids Switzerland Ag

Philippe Stefanutti

Nicolas Hugo

Toufann Chaudhuri

Philippe Noisette

Luc Meysenc

Harry Zueger

Francisco Canales

Antonio Coccia

Stephane Isler

Jan Poland

Manfred Winkelnkemper

Alessandro Zanarini

Philippe Haeberlin

Alper Akdag

Georges Dormia

Blaise Thorens

Luc Grosjean

Alice Piazzesi

Bernard Descollaz

Ming Zhang

Raphael Kegelin

Thomas Hertwig

Christian Vetterli

Marc Pellerin

Vincent Brungard

Joseph Duron

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

The invention relates to a traction transformer for railbound vehicles comprising: an insulating liquid filled enclosure, at least two windings contained in the enclosure, a transformer core, mounting means for mounting the transformer to the railbound vehicle, wherein the transformer core is arranged outside the enclosure, and wherein the mounting means are attached to the transformer core.

Traction transformer

A converter circuit has a first resonant converter that is connected on the DC voltage side to a first energy storage circuit, and a transformer. A second resonant converter is connected on the AC voltage side to the secondary winding of the transformer and on the DC voltage side to a load converter, and a CLL resonant circuit is connected to the first resonant converter and to the primary winding of the transformer. The CLL resonant circuit has a resonant capacitance, a first resonant inductance and a second resonant inductance.

Converter circuit and unit and system comprising such converter circuit

A power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters connected between an AC supply line and a traction transformer. The transformer is operable at a transformer nominal frequency below 3 kHz and above the AC line frequency. On the secondary side of the transformer, more than one parallel-connected secondary converter are provided and connected to a DC link. In case of failure of one of the secondary converters, the multilevel AC/DC converter may continue to operate with reduced power delivered by the remaining operating levels.

Multilevel AC/DC converter for traction applications

A power loop has a power-loop emitter and a power-loop receptor located in different housings and connected via a power-loop conductor that is at least partially exterior to both housings. By means of a current transformer inductively coupling the conductor to the emitter or receptor, the power-loop also provides for electrical insulation between the emitter and the receptor. The emitter and receptor being distant from each other offers greater flexibility in the positioning and design of the galvanic separation between the emitter and the receptor or the supplied gate-drive, respectively. For example, the local voltages of converter levels ranging up to the supply voltage of e.g. 21 kV RMS of the multilevel converter can thus be insulated from the global earth potential of the power-loop emitter. Several power-loop receptors can be coupled to the same power-loop conductor to be fed by the same power-loop emitter.

Multilevel converter arrangement

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

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Choisy, France

Philippe Stefanutti