The system has been developed initially for use with Made's only variable speed synchronous turbine to date, the AE52-800 kW machine, though the company is also applying it to the development of a new 2 MW model. Made's Antonio de Lara says the company has already sold one AE52 to Vietnam for use as a stand-alone wind-diesel hybrid system on one of the country's small islands. Whether connected to the grid or not, the turbine uses the momentum of its own rotor and power train as a mechanical energy storage system to control frequency and voltage. This reduces the turbine's dependency on the power source, whether it be the grid or the diesel generator. The company also claims the system reduces harmonic distortions by applying special modulation techniques to the grid connection inverter.
Spanish turbine manufacturer Made Tecnologías claims to have patented a system by which variable pitch, synchronous and quasi-synchronous (double-fed) wind turbine generators may contribute to the dynamic stability of the grid without requiring energy storage systems such as flywheels. Made believes the system to be so stable that it can work efficiently even if not connected to an electricity grid.