This PhD thesis provides an extensive evaluation of a novel drivetrain for wind turbines, featuring the implementation of a magnetic continuously variable transmission (m-CVT). This device is designed to maintain constant output speed despite varying input speeds, enhancing the operational flexibility and contributing to grid stability.
The study begins with a comprehensive overview of current wind turbine technologies and the dynamics of wind energy. It highlights the challenges associated with integrating such technologies into modern grid systems, including adherence to strict grid code requirements. The innovative m-CVT drivetrain is introduced, detailing its principle of operation, control architecture, and modeling.
The central aim of this research is to rigorously assess the m-CVT drivetrain under a variety of operational conditions. This includes normal and abnormal wind conditions and compliance with grid codes, with a particular emphasis on Fault Ride-Through (FRT) capabilities. These are crucial for maintaining grid stability during disturbances.
Experimental validations are conducted to confirm the theoretical and simulated results. A hardware in the loop (HIL) setup is developed with a Wound Rotor Synchronous Generator (WRSG) connected to the grid while the wind turbine and m-CVT models running in the real time computing platform (dSpace). Comparison with simulations results confirm the predicted performance.
In conclusion, the thesis significantly advances the understanding of the m-CVT applications in wind turbine drive trains, offering robust solutions for enhancing grid stability while maintaining wind turbine full functionality.
