Thus, the key contribution of this paper is the concept demonstration of IPC for yaw control. However, IPC for yaw control also shows a reduction in IPC blade load reduction potential and causes a slight increase in pitch activity. The tests show that yaw control using IPC has the distinct advantage that the yaw system loads and support structure loading are substantially reduced.
In this paper, IPC for yaw control is tested on a high-fidelity numerical model of a commercially produced wind turbine in free yaw. In the stationary frame of reference, the yaw error of a turbine can be appended to generate IPC actions that are able to achieve turbine yaw control for a turbine in free yaw. For IPC, the multi- blade co-ordinate (MBC) transformation is used to process the blade load signals from the rotating to a stationary frame of reference. Individual pitch control (IPC) for reducing blade loads has been investigated and proven successful in recent literature. Navalkar, S T Van Wingerden, J W Van Kuik, G A M