Abb Research Ltd.

Marcel Merk

Bruno Agostini

Thomas Gradinger

Francisco Canales

Antonio Coccia

Gerold Knapp

Fabiana Da Silveira Cavalcante

A heat exchanger including a first heat exchanger module with a first evaporator channel and a first condenser channel. The first evaporator channel and the first condenser channel are arranged in a first conduit. The first evaporator channel and the first condenser channel are fluidly connected to one another by a first upper distribution manifold and a first lower distribution manifold such that the first evaporator channel and the first condenser channel form a first loop for a working fluid. The first heat exchanger module includes a first evaporator heat transfer element and a first condenser heat transfer element. The heat exchanger includes a second heat exchanger module coupled to the first heat exchanger module by a fluid connection element for an exchange of the working fluid between the first heat exchanger module and second heat exchanger module.

Heat exchanger for traction converters

A controller circuit is specified, having a step-up controller, a resonant converter connected downstream of the step-up controller on the output side, a transformer, a rectifier, which rectifier is connected to the secondary winding of the transformer on the input side, and a CLL resonant circuit connected to the resonant converter and to the primary winding of the transformer, which CLL resonant circuit has a resonance capacitance and a first and a second resonance inductance. In order to reduce the switching losses, the CLL resonant circuit is embodied as a 'T' circuit.

Controller circuit and system having such a controller circuit

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Zurich, Switzerland

Marcel Merk