Design of a coordinated robust controller of SMES and blade pitch for smart‐grid power systems

Abstract

This paper presents the design of a coordinated superconducting magnetic energy storage (SMES) and blade pitch controller (BPC) to stabilize the frequency in a smart-grid power system. To compensate for such power variations, a SMES that is able to supply and absorb active power quickly can be applied to control the frequency fluctuation. The structure of the controller is that of a first-order lead-lag compensator. The robustness of the controller is guaranteed by applying an inverse additive perturbation to represent possible unstructured uncertainties in the power system such as variation of system parameters, generating and loading conditions, etc. Genetic algorithm (GA) is applied to solve and achieve the control parameters. Simulation studies have been done to show the control effect and robustness of the proposed SMES and blade pitch in comparison with SMES & Pitch against various disturbances. . His current research interests include power system stability and smart-grid power systems.

Robust non‐fragile approach to resilient design of PID‐based blade pitch control for wind energy conversion system

“…Thus, the robustness and resilience of the BPC are crucial for better performance and operation. Synthesis of robust BPCs has been widely studied in relation to WECS . Robust BPC under parameter uncertainties in plant dynamics is explored in .…”

“…Therefore, a number of studies have focused on the variable‐speed and ‐pitch WECS where the WT's rotor speed and blade pitch angle control are of interest . Several different control strategies for the BPC of WECS have been proposed, such as sliding mode control (SMC) , robust control , fuzzy control , neural network control , PID control , and so on. Although SMC has shown adequate performance, its relative complexity is the main drawback.…”