Robust H_∞ Observer-Based Tracking Control for the Photovoltaic Pumping System

Iliass Ouachani, Abdelhamid Rabhi, Ahmed El Hajjaji, Belkassem Tidhaf, Smail Zouggar

Laboratory of Electrical Engineering and maintenance High School of Technology, University Mohammed First, Oujda, Morocco.
Laboratory of Embedded Electronic Systems and Renewable Energy, University Mohammed First, Oujda, Morocco.
Laboratory of Modelisation of Information and Systems, University of Picardie Jules Verne, Amiens, France.

DOI: 10.4236/epe.2014.69023                

Abstract

In this paper, we propose a H_∞ robust observer-based control DC motor based on a photovoltaic pumping system. Maximum power point tracking is achieved via an algorithm using Perturb and Observe method, with array voltage and current being used to generate the reference voltage which should be the PV panel’s operating voltage to get maximum available power. A Takagi-Sugeno (T-S) observer has been proposed and designed with non-measurable premise variables and the conditions of stability are given in terms of Linear Matrix Inequality (LMI). The simulation results show the effectiveness and robustness of the proposed method.

Keywords

Photovoltaic, Pumping System, Fuzzy Controller, H_∞ , Takagi-Sugino (TS) Fuzzy Model, Observer, Stability, Linear Matrix Inequalities (LMIs), Maximum Power Point Tracking (MPPT), Unmeasurable Premise Variables

Conflicts of Interest

The authors declare no conflicts of interest.

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