A gravitational energy system (momentum turbine)
A hall effect plasma accelerator
A hall effect plasma thruster
A handling system for a wind turbine nacelle, a method for...
A handling system for a wind turbine nacelle, methods for...
A hydro or wind powered electrical turbine generator
A hydroelectric powerplant
A hydroelectric turbine comprising a passive brake and...
A hydroelectric turbine having a magnetic bearing
A hydroelectric turbine system with aligning means
A hydroelectric turbine with floating rotor
A hydropneumatic water engine
A hydropower device
A hydropower plant provided with a grating and a method for...
A liquid turbine device including a turbine wheel with more...
A machine and system for power generation through movement...
A machine and system for power generation through movement...
A mechanical-hydraulic converter of the wave energy
A method and control system for reducing the fatigue loads...
A method and device for producing compressed air and a...