- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
When wind speeds exceed the rated values, wind turbines operate in region 3. In region 3, collective pitch control (CPC) is the main tool to regulate the turbine’s speed and generated power. The main challenges that face a CPC design are the modeling uncertainties, constraints on the control actions, and immeasurable system states. A tube-based model-predictive output-feedback controller is proposed here to design a CPC. The proposed controller is an optimal controller that respects constraints and accommodates uncertainties without a need to measure all states. Applications to a typical 5-MW offshore wind turbine show through simulations the superiority of the proposed controller.
This paper has addressed the design of a tube-based modelpredictive output-feedback controller for collective pitching of wind turbines. The proposed controller has two advantages. First, it is robust against model uncertainty by adopting a tube based approach. Second, it takes into account the observer design. The proposed controller is coupled with individual pitch control for a mechanical load reduction. The simulations have been carried using FAST models for a 5- MW offshore wind turbine. The proposed controller’s performance has been compared to a gain-scheduled PI controller. The results show that the proposed controller achieves significant enhancements in generator power, speed regulation, and reduction of the mechanical loads.