Super Capacitor-based Inverter control using Fuzzy Controller Wind Energy System connected to Weak Grid

Abstract

In this article, a fuzzy based inverter control is applied to a weak grid connected wind energy system. Whenever Wind Energy system connected to battery storage or super capacitor, which is nothing but a Hybrid Energy System (HES). These Wind HES are sometimes subjected to transients and gives sluggish dynamic output as the wind speed varies and moreover the generator inertia doesn't allow quick rotation when wind is blown to turbine. So, these transients and dynamic results are modified using the fuzzy based inverter control technique. This controlling technique brings a Super-Capacitor (SC) quick charging/discharging features for buck-boost converter. The transient behavior and the frequency response of the system is improved with buck–boost converter that conducts bi-directionally. Fuzzy Logic Controller (FLC) used in the control technique produces the controlled reference output required for the inverter operation. Fuzzy based inverter control scheme designed and analyzed under the weak grid condition. The new control method used for weak grid/load like marine electrical system, this wind energy system decreases the fossil fuels use and the entire proposing work is to be analyzed in MATLAB Simulink environment. The outcomes are presented and compared to the traditional control technique to justify the reduced the oscillations and improvement in the quality of power.