3. Solutions to Overcome the Natural Self-Start Inability of Darrieus VAWT
The Darrieus VAWT has a natural inability to self-start, since the blades suffer at the same
time with the drag forces and the lift forces. These forces usually balance each other
leading to a lack of starting torque. Nevertheless, there are few works that study the
starting performance of Darrieus VAWT through the development and validation of
computational simulation, as occurs in [26].
Several solutions have been presented to overcome the self-start inability of Darrieus wind
turbines, such as external electricity feed-in, guide-vanes, hybrid configuration, blade pitch
optimization, blade form optimization, and blade profile design.
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