Abstract
The following paper shows the analysis of nonlinear controllers to deal with the nonlinearity present in the Photo-Voltaic (PV) system. The Output power of Photo-Voltaic (PV) panels changes if there are any changes in load or atmospheric conditions like temperature & irradiation level. A tracking technique is always required to obtain the utmost power from the panel. PV systems can be made more productive by simulating controllers to track maximum power point (MPP). The circuit simulated in this paper is having PV connected to a resistive load through DC/DC Boost converter, & a Sliding Mode Controller (SMC) and Back-Stepping Control (BSC) design is used to provide a dedicated control performance. The Sliding Mode and Backstepping controllers for obtaining the optimal power point and stability are based on Lyapunov function analysis and then efficiency with which these two controllers track the ideal power is obtained graphically. Model and the control methodologies are analyzed with a simulation model that is entirely done in Simulink/Matlab.
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