Design and Modelling of Acost Effective Ac Voltage Stabilizer with Fuzzy Control

Abstract

in this paper we are developing a  novel proposes a AC voltage regulator is used in both the domestic and industrial sectors for protecting the system from undesired effects is due to random voltage variations of the power supply. The paper introduces an ac voltage stabilizer/converter (ACVS) that is based on aFLC controller technology. A fuzzy control system is a control system based on fuzzy logic—a mathematical system that analyzes analog input values in terms of logical variables that take on continuous values between 0 and 1, in contrast to classical or digital logic, which operates on discrete values of either 1 or 0.The main theme of this paper is ACVS offers a specified strategy of voltage regulation, less harmonics, and low cost. The paper explains the operating principle of the ACVS with fuzzy logic controller and derives its nonlinear mathematical model. To ensure the desired performance of the ACVS while it is subject to any undesireableinput voltage and load variations, an optimal fuzzy logic control strategy is designed. It is achieved via transforming the ACVS model extending with fictive axis emulation into a rotating reference frame and the linearization of the model via specific orientation of the reference frame and introducing a linear control action. Operation of the ACVS is simulated under different disturbances due to load and grid voltage changes, and compared to voltage stabilization with application of fuzzy controllers. Simulation results are presented to demonstrate the voltage regulation with fuzzy control technology.