This paper addresses the design of a fuzzy control system with a fuzzy controller and a fuzzy estimator for a fossil fuelled drum boiler-turbine-generator unit on the basis of a dynamic fuzzy model that was developed in our recently published paper. In the design procedure, a dynamics augmentation is introduced and a dynamic fuzzy augmented system is then determined for the nonlinear boiler-tur...

A new control problem called Disturbance Tracking Control (DTC), which arises in active control of variable speed horizontal axis wind turbines for electric power generation, was developed previously. Feedback control of a linear plant, which is persistently disturbed, must cause the plant output to track a linear function of the disturbance. This control theory is related to Tip Speed Ratio Tr...

This paper presents a gain-scheduled approach for boiler-turbine controller design. The objective of this controller design is to achieve tracking performance in the power output and drum pressure while regulating water level deviation. Also, the controller needs to take into account the magnitude and rate saturation constraints on actuators. The nonlinear boiler-turbine dynamics is brought int...

Tidal stream turbines may operate under yawed conditions due to variability in ocean current directions. Insight into the wake structure of can be essential ensure efficient tidal energy extraction, especially for turbine arrays where interactions emerge. We studied experimentally effects operating varying yaw conditions. Two scenarios, including a single and set two alignment, were configured ...

Abstract To improve the utilization rate of tidal current energy, Twin Half-rotating Impeller Tidal Turbine(THITT), a new type turbine was proposed based on half-rotating impeller(HRI) which lift-resistance compound impeller, and its virtual prototype established. By changing way impeller rotated, two kinds CFD models were established taken into Xflow to calculate. The differences in their velo...