Abstract
Generating electric power from solar energy is a vastly growing technology worldwide. This paper investigates and evaluates the performance of a solar power generation system utilizing variable structure control with sliding mode for maximum power point tracking (MPPT). This controller is implemented on a buckโboost dcโdc power converter to track the maximum power point (MPP). The suggested controlled solar energy system also includes a dc-link capacitance, a voltage-source inverter, and a grid filter. Energy-based control is performed for the voltage of the dc-link capacitor. Space vector pulsewidth modulation (SVPWM) with current control in dq rotating frame is utilized to govern the inverter. The suggested system is simulated and subjected to various operating conditions. The results demonstrate the power captured from photovoltaic (PV) panels and delivered to the grid while tracking the MPP. For more confidence on the MPPT controller, practical experimentation is introduced using a real PV panel and power circuit with interfacing to a personal computer (PC). The proposed design is subjected to various experimental tests to ensure its validity.
Highlights
Solar energy is one of the vital renewable energy resources that can provide energy to electrical networks with low environmental cost compared with traditional ways of energy production
To track Maximum Power Point (MPP), variable structure controlled via sliding mode (shortly named Sliding Mode Control (SMC)) is employed in this work on a DC-to-DC converter
SYSTEM CONTROL The grid-linked PV generation system utilizes several controllers; the DC-to-DC converter is controlled via sliding mode controller, another controller is employed for DC link voltage level and energy extraction, control procedures for Voltage Source Inverter (VSI) voltage is implemented, current and power in dq synchronous frame are controlled
Summary
Solar energy is one of the vital renewable energy resources that can provide energy to electrical networks with low environmental cost compared with traditional ways of energy production. Low proficiency and characteristics nonlinearity of PV panels, together with continuous change in radiations from sunlight and surrounding temperature make it important to acquire a Maximum Power Point tracking (MPPT) process [1]. Photovoltaic (PV) energy modules are often linked to converters in order to capture the maximum available amount of power. To track Maximum Power Point (MPP), variable structure controlled via sliding mode (shortly named Sliding Mode Control (SMC)) is employed in this work on a DC-to-DC converter. A variable structure controller based on sliding mode technique for maximum power point tracking is implemented to a grid-connected photovoltaic generation system. The suggested solar energy system includes buckboost DC-to-DC converters, DC-link capacitance, a voltage source inverter, and a grid filter. Feshara et al.: Performance Evaluation of Variable Structure Controller Based on Sliding Mode Technique. Practical experiments on a real solar module interfaced to a PC are performed
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