LEITWIND turbines with LeitDrive converters and FULL-SCALE CONVERTER technology not only maximize the energy produced and do not disrupt the grid, but are even beneficial to it
The power fed into the grid by wind turbines is not always continuous, with frequency and current variations that can cause losses during the process of transforming the kinetic into electrical energy. This is directly due to the primary energy source powering the turbines – wind – which by nature is variable, often intermittent, and unpredictable.
With the development of the LeitDrive Full Scale Converter, LEITWIND’s R&D department has found an optimal solution to this problem: This converter, combined with the DirectDrive technology, enables maximum efficiency and meets all grid compatibility requirements. In addition, special or future requirements can be implemented in a very short time thanks to the flexible and in-house developed control system.

Maintenance times can also be significantly reduced by improved reliability and availability. The achieved efficiency, even in partial load operation, makes LEITWIND wind turbines even more economical with this unique technology – even for less windy sites and remote areas.

The conversion of the electrical energy generated by the DirectDrive generator into high-quality energy, which can be fed into the power grid, takes places directly with LEITWIND wind turbines, and minimizes conversion losses. A characteristic of the LEITWIND turbines ist thate the energy produced by the generator ends up in the grid.

LEITWIND frequency converters are optimally adapted to international and increasingly demanding network requirements. The demands on the various producers of electrical energy are increasing, because it is absolutely necessary to guarantee the public a continuous power supply. Therefore, wind turbines are required to play a part in stabilizing the electricity grid, and must autonomously regulate:

Wind turbines can regulate or limit the active power output within a given framework. Thereby they contribute to the stabilization of the network and its frequency and can prevent overloads on the transmission lines

  • Active Power, wind turbines can regulate or limit active power output within a given framework. Thereby they contribute to the stabilization of the network and its frequency and can prevent overloads on the power lines.
  • Reactive Power, the turbines must be able to inject reactive power to stabilize grid frequency and voltage even when they are switched off.
  • Frequency Operating Range, continuity of operation is required within a country-specific frequency range.
  • Low-Voltage Ride Through, if the grid suffers a voltage sag, turbines without Full Scale Converter immediately disconnect and only restart when the grid stabilized, which loses electricity and has significant negative impacts on the grid. LEITWIND turbines do not damage the grid; they stabilize it by helping it to restart, and they also reduce electricity losses as the turbines stay connected for longer compared to traditional technologies.

The LeitDrive converter increases the capacity factor of the wind turbine: whit traditional technology and without a converter, the capacity factor is only 20%; using a Full Scale Converter together with technological improvements and larger rotors achieves a capacity factor of more than 50%.

Very windy sites are becoming increasingly rare, and demand for electricity is constantly increasing. Responding to this demand requires technological evolution based on efficiency. It is this continuous quest for efficiency and constant improvement that drives the development and construction of LEITWIND turbines, making them simply efficient.

Benefits of the LeitDrive Full Scale Converter with DirectDrive technology:
  • Fully optimized powertrain with generator-converter unit for maximum efficiency, even in light winds
  • Provision of network-supporting functions even in doldrums and contributing to the security of electrical supply
  • Less maintenance and higher availability due to perfectly matched in-house developed components
  • Operation event during voltage sags