JP_final_techxriv.pdf (1.36 MB)
Application of Input Shaping Method to Vibrations Damping in a Type-IV Wind Turbine Interfaced with a Grid-Forming Converter
Type-IV wind turbines
can experience torsional vibrations in the drivetrain structure. This can lead
to additional stress on turbine components and a quality reduction of the power
delivered to the grid. The vibrations are mostly induced by fast variations of
the electromagnetic torque, which depends on the control of a back-to-back
converter. A number of studies have already presented methods to mitigate the
drivetrain vibrations. However, the research was dedicated to cases when the
converter, interfacing a wind turbine to the grid, operates based on a
grid-following control. A wind turbine can be also interfaced to a grid-forming
converter. In this case, a back-to-back converter control creates a strong link
between the electromagnetic torque and grid dynamics, so the abovementioned
problem remains relevant. Therefore, this paper presents a solution to damp
torsional vibrations in the direct drive of a Type-IV wind turbine, interfaced
to the electrical power grid with a voltage source converter based on a
grid-forming control. The damping of the drivetrain vibrations relies on the
input shaping method implemented using a zero-vibration filter. Simulation
results prove the effectiveness of the method to damp drivetrain vibrations
during grid frequency variations. In addition to that, damping impact on system
behavior with respect to other parameters is analyzed and its mitigation is
discussed.
Funding
Foundation I-SITE Université Lille Nord – Europe
History
Email Address of Submitting Author
artur.avazov@centralelille.frORCID of Submitting Author
0000-0002-3839-0302Submitting Author's Institution
Centrale Lille, L2EP, KU LeuvenSubmitting Author's Country
- France