IMPROVING THE EFFICIENCY OF SOLAR PANELS WHEN USING MPPT – CONTROLLER
Abstract
This article discusses methods to improve the efficiency of solar panels. One such method is to
use a Maximum Power Point Tracking (MPPT) controller with a Perturb and Observe (P&O) algorithm.
The proposed method of increasing the efficiency of solar panels using MPPT - controller allows you to
get the maximum power given by solar panels when tracking the point of maximum power. Effective tracking
of the point of maximum power of solar modules can give an increase in energy production of about 15-30%.
In analyzing the operation of the MPPT controller, a combination of P&O and Model Predictive
Control (MPC) algorithms was considered to improve the control structure of the amplifier converters used
in renewable energy systems and to determine the values of solar panel power change when changing solar
radiation.
Network modeling in Simulink Matlab environment is carried out. The model consists of solar panels
JAM60S09 320 W, three-phase inverter, step-up transformer TMN - 250/20 / 0.4, capacitor and inductor.
During the simulation, the serviceability of the model was tested, the efficiency of the algorithm with a
continuous change of solar radiation for 20 s, an experiment was also performed with the unforeseen
inclusion of active load in the network.
The results showed that the algorithm is working. The efficiency of the MPPT-controller algorithm
when tracking the point of maximum power in the conditions of continuous change of solar radiation is 97%.
Graphs were obtained: direct current and voltage at the terminals of solar panels, active and reactive power
at the output of the inverter, simulation of solar radiation, efficiency of tracking the point of maximum power
and graphs of three-phase current and mains voltage.