142230 ⎘
Controlling by varying liquid flow of turbines; Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow without retroactive action
Method for operating a hydraulic machine and corresponding installation for converting hydraulic energy into electrical energy
#2Movable-blade operation system for hydraulic machine
#3Method for stabilizing the rotation speed of a hydraulic machine with S-characteristics and installation for converting hydraulic energy into electrical energy
#4SEWER ENERGY MILL SYSTEM