Rotational sampling in wind turbines: Difference between revisions

Revision as of 03:00, 13 June 2023

Revision as of 03:02, 13 June 2023

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The loads on both horizontal axis [[wind turbinesturbine]]s (HAWTs) and vertical axis wind turbines (VAWTs) are cyclic; that is, the thrust and torque acting on the blades is dependent on where the blade is. In a horizontal axis wind turbine, both the apparent wind speed seen by the blade and the angle of attack depend on the position of the blade. This phenomenon is described as rotational sampling. This article will provide an insight into the cyclic nature of the loads that arise because of rotational sampling for a horizontal axis wind turbine.

Rotational sampling can be divided into two parts: deterministic and stochastic. Deterministic processes present themselves as spikes on a power spectrum, whereas stochastic processes are broader i.e. spread over a wider frequency range.

{{Further|Wind turbine design}}

==Background==