Ingeteam has developed this new technology, named xDFM, featuring a power converter not connected to the grid and an additional generator acting as an exciter. It is an innovative, variable speed technology, offering significant advantages over the DFM and Full Converter systems.
The xDFM can be considered an evolution of the classic DFM topology, wherein two electric machines, a synchronous permanent magnet and a doubly fed asynchronous machine, are used together in such manner that the power is only fed to the grid through the stator of the doubly fed induction generator and the power converter manages the power between both electric machines.
The output is accurately controlled and remains constant above rated speed, avoiding power fluctuations dependent on wind speed variations. Additionally, power generation is less sensitive to grid disturbances, such as grid faults, and provides a better performance in stand-alone and weak grids.
«For wind turbines up to 6 MW suitable for on and offshore applications»
- Full grid code compliance with torque peak limitation
- Mechanical load reduction (xDEB)
- High Power quality (No power converter is connected to the grid)
- Suitable for HVRT connection