Alstom Technology Limited

Oliver Drubel

Reinhard Joho

Francesco Stallone

Alfred Rufer

Alberto Izquierdo

Gunter Scherf

Jean-Jacques Simond

Kevin Mayor

An electrical machine () includes a rotor () and a stator () arranged within a machine housing () which are cooled by at least one cooling circuit (A,B). The machine () further includes power semiconductors which constitute part of an electronic power device () associated with the machine (), and which are arranged within the machine housing () and are cooled by a cooling device (). A flexible arrangement and cooling of the electronic power device () is achieved by providing a cooling device () for the electronic power device () which is independent of the at least one cooling circuit (A,B) of the rotor ()and the stator ().

Electrical machine with integrated electronic power device

In a connection arrangement () for the stator winding of a turbo machine with two or more parallel circuits of individual conductors () per phase, the individual conductors belonging to one phase form a phase group () and run directly adjacent to one another in the stator body, the individual conductors of the winding are each connected from a winding connection () to an external connection () via a phase ring (), which runs concentrically with respect to the machine axis (). A simplification of the manufacture and assembly as well as a reduction in space requirements and an improvement in the thermal properties are achieved by the phase rings () of a phase group each being led together as a phase ring group () from the winding connections () to the external connections ().

Connection arrangement for the stator winding of a turbo machine having two or more parallel circuits

A generator having electronic circuit breakers as circuit breakers, whereby circuits comprising thyristors, IGBT elements and/or GTO thyristors are used, and whereby the circuit breakers are integrated into the generator, preferably in that the circuit breakers are distributed on parallel winding branches of the stator. Such power electronics can also be used for switching generators having a power above 50 MV with very short switching times of a few milliseconds.

Generator with integrated powerswitch

A method for acceleration of a shaft run that a turbine, in particular a gas turbine, a generator and an excitation machine connected to one another by a common shaft, includes accelerating the turbine is accelerated using acceleration apparatus during a starting process, wherein the excitation machine is used as the acceleration apparatus. In addition, an apparatus for performing the method.

Method for acceleration of a shaft run, as well as an apparatus for carrying out the method

An electrical conductor and in particular a conductor bar of an electrical machine, particularly a generator or transformer, in which an optical measuring device can be integrally arranged. A measuring unit includes an electrical conductor and an optical measuring device arranged in the conductor, and a production method for producing such an electrical conductor is described. The electrical conductor (), having a conductor cross section and also an extent in the conductor longitudinal direction, includes a recess () in the conductor longitudinal direction at least along a section of the conductor, for integrated arrangement of a signal conductor, in particular an optical waveguide.

Integrated arrangement of optical fibers in a conductor

A rotor for an electrical machine, including axial conductors for the rotor field windings inserted into axial slots in the rotor body and are secured against the forces which occur during operation by peripherally arranged means, wherein a single conductor is disposed in each slot. The conductor is preferably disposed upright in the axial slot.

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Nussbaumen, Switzerland

Oliver Drubel