Nonlinear Backstepping Control of Shunt Active Power Filter

Abstract

This paper presents a new adaptive control technique for shunt active power filter (SAPF) based on adaptive backsepping technique. By using the nonlinear model of the shunt active power filter and backstepping method, the Lyapunov functions are constructed in order to enable the system to have uniformly asymptotic stability. An adaptive backstepping controller is designed to adopt the gradual correcting algorithm. The controller takes system nonlinearities into account in the control design. The simulation is completed by using MATLAB software. The simulation results show that the designed feedback controller makes the closed loop system stable and has better tracking performance.