A Sliding Mode Multimodel Control for a Sensorless Photovoltaic System

TL;DR

This paper presents a sliding mode multimodel control approach with a nonlinear observer for a sensorless photovoltaic system, significantly improving energy capture by accurately tracking the sun's position.

Contribution

It introduces a novel sliding mode multimodel control combined with a nonlinear observer for sensorless PV tracking, enhancing energy efficiency.

Findings

Power production increased by over 40%

Effective sun tracking with dual-axis system

Robust control under varying conditions

Abstract

In this work we will talk about a new control test using the sliding mode control with a nonlinear sliding mode observer, which are very solicited in tracking problems, for a sensorless photovoltaic panel. In this case, the panel system will has as a set point the sun position at every second during the day for a period of five years; then the tracker, using sliding mode multimodel controller and a sliding mode observer, will track these positions to make the sunrays orthogonal to the photovoltaic cell that produces more energy. After sunset, the tracker goes back to the initial position (which of sunrise). Experimental measurements show that this autonomic dual axis Sun Tracker increases the power production by over 40%.