Improved Adaptive Backstepping Sliding Mode Control of Static Var Compensator

Qingyu Su,Fei Dong,Xueqiang Shen

doi:10.3390/en11102750

Qingyu Su, Fei Dong + Show 1 more

Open Access

https://doi.org/10.3390/en11102750

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Journal: Energies	Publication Date: Oct 14, 2018
Citations: 6	License type: CC BY 4.0

Affiliation: Northeast Electric Power University

Abstract

The stability of a single machine infinite bus system with a static var compensator is proposed by an improved adaptive backstepping algorithm, which includes error compensation, sliding mode control and a κ -class function. First, storage functions of the control system are constructed based on modified adaptive backstepping sliding mode control and Lyapunov methods. Then, adaptive backstepping method is used to obtain nonlinear controller and parameter adaptation rate for static var compensator system. The results of simulation show that the improved adaptive backstepping sliding mode variable control based on error compensation is effective. Finally, we get a conclusion that the improved method differs from the traditional adaptive backstepping method. The improved adaptive backstepping sliding mode variable control based on error compensation method preserves effective non-linearities and real-time estimation of parameters, and this method provides effective stability and convergence.

Highlights

With the development of economy and the various fields of modern life, especially industry, the requirement of electric power is more and more important
This paper introduces the improved adaptive backstepping sliding mode variable control based on error compensation method (ABSMVCEC)
To get a higher control accuracy for internal parameters perturbations, we put sliding mode control based on error compensation into the traditional adaptive backstepping method

Summary

Introduction

With the development of economy and the various fields of modern life, especially industry, the requirement of electric power is more and more important. As for a single machine infinite bus system, the adaptive backstepping method [26,27] can reduce the design burden on the stability control and parameter estimation. This paper introduces the improved adaptive backstepping sliding mode variable control based on error compensation method (ABSMVCEC). This method can get the system stable more quickly. It designs nonlinear controller and stability proof using the Lyapunov stability criterion.

Model of SMIB System with SVC

The Statement of Problem and Control Objective

Design of Adaptive Backstepping Controller Based on Error Compensation

Simulation

Conclusions