Abstract
Tracking the maximum output power of a photovoltaic (PV) cell is an important problem to harvest more energy at different weather and load conditions. This paper presents the design and simulation of a robust direct adaptive controller (RDAC) for maximum power point tracking (MPPT) device based on boost converter topology. A mathematical model is developed, and a suitable RDAC is designed for MPPT device, and simulations are performed using MATLAB/Simulink to verify the controller’s robustness at varying operating conditions. The real-time irradiance and temperature data are used on an hourly basis to test the suggested MPPT adaptive controller for a typical sunny day in summer and winter. The simulation results show that the RDAC performs excellent tracking under varying conditions such as irradiance, temperature, load, boost converter inductance, and capacitance.
Highlights
The renewable energy market is booming, bringing down cost and delivering the promise of a clean energy future [1]
Unlike the electricity produced from fossil fuel, the electricity generated from solar power does not cause emission of greenhouse gases [5]
The simulation for the maximum power point tracking (MPPT) with the robust direct adaptive controller (RDAC) was carried out using MATLAB/SIMULINK
Summary
The renewable energy market is booming, bringing down cost and delivering the promise of a clean energy future [1]. The MPP occurs when the rate of change of power to the voltage is zero, as shown in Figure 2a and is formulated as in Equation (3) This equation will be useddV asin the control law for the MPPT adaptive controller. Kirchhoff’s voltage and current laws are applied on the Boost converter circuit again, but this time when the switch is open, as shown, to get the current and voltage equations as shown in Equations (7) and (8), respectively. A state space representation for Equation (13) can be obtained by setting the current as of the first state x1 and the output voltage as a second state x2 This state space representation is required to find the boost converter transfer function in the s-domain [26,27]. The boost converter capacitance and inductance values must be selected carefully to minimize the voltage and current ripples. On the physics of PV cells and based on the Boost converter topology for MPPT application
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