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This presentation describes achievements in turbo generator technology and gives an outlook into a dynamic future. Turbine evolution in a competitive environment has always been driving the generator development. The race in gig watt unit rating is history. The field of competition with independent designs has narrowed over the past.

Since the 1901 invention of the cylindrical rotor for a high-speed generator, the turbogenerator has been used for converting the steam turbine and gas turbine power into electrical power. Today a wide array of turbogenerators between 50 MVA and 1300 MVA in full-speed (two-pole) design is available. The nuclear power plant business is covered by halfspeed (4-pole) designs with a range up to 2000 MVA. Today, the main drivers for design uprates are cooling design and insulation technology. The design development is supported by FEM and CFD, which in future will get linked with mechanical design tools. The future is characterized by new needs regarding power, efficiency and stability, and the commercial availability of emerging material technologies.

With this decoupling of the generator from the power Converter fed synchronous generators have the followsystem, the following advantages may be achieved: ing advantages: -free choice of generator or turbine speed, hence

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