HydroFlex webinar nr. 2 is available
Operational flexibility of hydropower stations is among the highest goal of the Hydroflex project. Faster and at the same time more efficient start-stop transients of generators and pumped–storage units are challenging a more than a century old technology. In particular, the coupling of faster and faster switching power electronics drives to the generator/motor windings needs to be carefully assessed, in order to avoid the insurgence of prejudicial electric stress to the insulation. After introducing the reasons for the increased use of power electronics in the excitation system of synchronous machines, this webinar by Roberto Felicetti, Uppsala University, will present how WP4 is facing the issue of predicting and assessing overvoltage in the unit field winding.