Pitch angle control of wind turbine systems in cold weather conditions using $$\mu$$ μ robust controller

Abstract

Wind turbine is a complex nonlinear system that the exact model of this system is not available, so it can be represented as an uncertain system. Thus, the control of this system is an important topic. Most of methods that design controllers for wind turbines consider these systems in suitable weather condition. While many turbines work in cold weather condition, in this paper, wind turbine is considered in cold weather, and in ice on turbine blades are considered as model uncertainties. A robust controller is designed for the wind turbine, in order to control the pitch angle. Performance of the proposed controller is evaluated in a comparison study.

Designing Mu Robust Controller in Wind Turbine in Cold Weather Conditions

“…Thus, the uneven of the blade is considered about 20% as uncertainty. A robust control is designed to control the turbine in the existence of uncertainty because of the blade imbalance icing [19]. The uncertainties in the wind turbine comprise the linearized model parameters which is extracted from the nonlinear plant, spring constant, and damping coefficient that alteration as the working point diverges; another uncertainty which is added to the system because of the presence of noise and disturbance in the input signal.…”

Research on Effect of Icing Degree on Performance of NACA4412 Airfoil Wind Turbine

“…Wang et al [8] studied the reduction of wind turbine power loss and speed reduction under different icing thicknesses. Tahere et al [9] considered the uncertainty caused by wind turbine ice accumulation, and introduced a robust control mode through simulation. This mode can control the pitch angle and improve the performance of the wind turbine.…”