Alstom Technology Limited

Lennart Diestel-Feddersen

Johann Haldemann

Michel Verrier

René Meylan

Alberto Izquierdo

Pascal Chay

Dominique Chadouteau

Michael Jean-Marie Berlamont

Janusz Bialik

Olivier Perros

Michel Bresson

Michel Jean-Marie Berlamont

A turbo generator (), including a stator and a rotor (), has a rotating bell type exciter () connected to one end of the rotor () and the exciter () being equipped with at least one cooler (). An axial duct () with a guide () is provided between a cylindrical housing () and the outer circumference of the bell type exciter (). Thus, drawbacks of the prior art are mitigated and the efficiency of the bell type exciter is increased by recovering the dynamic energy of the cooling fluid flow.

Turbo generator with exciter having pressure recovery

A flux screen is provided for shielding a generator stator core from the magnetic field generated by end windings of the stator, wherein the flux screen comprises a frontside to be at least indirectly facing the end windings of the generator and a backside to be at least indirectly facing the stator core of the generator, and wherein the backside is provided with channels and/or grooves and/or pits.

Flux screen for generators

A gas-cooled generator has a rotor rotatable about an axis, a stator surrounding the rotor concentrically and a rotating exciter connected to the rotor. The stator, rotor and exciter are arranged along the axis on a common base frame. A first cooler configured to cool the rotor and stator and second cooler configured to cool the exciter are connected to one another for the exchange of cooling gas via the base frame. At least one tube running in the base frame provides the connection between the first and second coolers.

Gas-cooled generator

Growing community of inventors

Brugg, Switzerland

Lennart Diestel-Feddersen