System for and method of frequency control of variable-speed wind power generator

Wind turbine providing grid support

Modulating wind power plant output using different frequency modulation components for damping grid oscillations

Method for operating a wind turbine

Redundant pressure control

Wind turbine providing grid support

Wind-turbine-generator control apparatus, wind turbine generator system, and wind-turbine-generator control method

Controlling a wind turbine to stabilize an electric grid

System and method for providing a constant output from a variable flow input

Method for operating a wind turbine

Wind turbine generator and output power control method

ELECTRICAL ENERGY GENERATING INSTALLATION DRIVEN AT VARIABLE ROTATIONAL SPEEDS, WITH A CONSTANT OUTPUT FREQUENCY, ESPECIALLY A WIND POWER INSTALLATION

Multi-use energy storage for renewable sources

Frequency-responsive wind turbine output control

Control device and method of a gas turbine electric energy production plant

Method and system for extracting inertial energy from a wind turbine

Wind power installation and method of operating it

Variable speed power generator having two induction generators on a common shaft

Wind turbine and method for operating same

Method and arrangement in wind power plant

Wind turbine and method for operating same