The Mita-Teknik Drive System (MDS) is a combined hardware and software pitch solution that precisely controls the angle position of each rotor blade as determined by the overall control system. The pitch system has three primary functions;

• Ensure optimal pitch angle during operation
• Ensure output and minimum load
• Function as the main brake system

To optimize the wind turbine power curve and to apply minimum load to the structure, it is necessary to regulate the aerodynamic power. This is done by pitching the rotor blades so that the rotor speed is maintained at optimum and always kept below the maximum allowed rotor speed. The blades can be pitched at such an angle that the blades come to a full stop, which for larger wind turbines is often the only way to stop safely.

Safe and Efficient
Maximum safety and efficiency is achieved with three independent systems, where each blade has a separate and independent MDS. The MDS continuously monitors the communication status, motor temperature, power supply, limit switches, motor brake status and a number of other parameters.

Should anything fail, the MDS controller takes immediate action and automatically moves the blade to the Safety Stop position stopping the wind turbine. Simultaneously, the two other MDS controllers will be notified to move their blades to the Safety Stop position as well, effectively bringing the wind turbine to a halt. In case of grid fault or loss of power, the MDS will be powered by the backup power - batteries or capacitors - and position the blades on Safety Stop position.

Customizable, Strong and Durable - Guaranteed
The MDS can be customized to fit into any type of wind turbine, and the design allows for a quick and easy installation. The immensely sturdy design of the MDS enables it to resist severe vibrations and forces induced during constant rotation, as well as withstand the weight of the service personnel. Combined with optimal blade-positioning and individual blade-control this makes it a perfect fit for the modern wind turbine.

Loaded with Features

• Adaptation to all types and sizes of wind turbines
• Integration with either Mita-Teknik or 3rd party control system
• Control logic - PID control, independent for each blade
• Easy settings of parameters
• Performance monitoring
• Communication to main control system via field buses
• Expandable I/O boards

For further information about our Electrical Pitch System, please contact our Sales departments today!