E. Schmidt, G. Traxler-Samek, A. Schwery:
"Design Improvement of Large Hydro-Generators using High Efficient Numerical Field Calculation Methods";
Poster: International HydroVision Conference, Portland OR,USA; 07-29-2002 - 08-02-2002; in: "Proceedings of the International HydroVision Conference", CD-ROM (2002), 1 - 10.

Nowadays, great importance is paid to the refurbishment of old electrical machines. Hydro-generators have a physical life time of about half a century. When old components are combined with new parts, modern design guidelines collide with old ones. The electrical design process for the refurbishment of large hydro-generators therefore requires special detailed investigations. The utilization of high efficient numerical field calculation methods allows for accurate predictions of the electrical behaviour of refurbished synchronous machines.