Benefits of Preview Wind Information for Region 2 Wind Turbine Control
نویسندگان
چکیده
The torque control of wind turbines in below-rated wind speeds involves a trade-off between power capture and generator loads. This paper explores this fundamental trade-off in the presence of preview wind information. A continuous-time optimal control problem is formulated on a one-state nonlinear turbine model. The numerical solution of this problem gives the Pareto optimal relationship between the gearbox loads and power capture. The effect of preview time and turbulence intensity on this optimal performance is investigated. This optimal performance is compared to the Kω standard control law. The main result quantifies the fact that the standard control law is not Pareto optimal. In other words, it is possible to use wind preview measurements to simultaneously increase power capture and decrease gearbox loads relative to the standard law. Moreover, the gap between the Pareto optimal performance and the standard law increases with the turbulence level.
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تاریخ انتشار 2012