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Control of Standalone Single-Stage Photovoltaic Pumping System Using State Feedback Approach

Renewable energy can decrease environmental problems. A photovoltaic pumping system is an easy and effective method to pump the water for remote areas and irrigation demands. The photovoltaic module's maximum power point tracking can be tracked by switching the power converter. This paper proposes a linear quadratic regulator-based state feedback control approach to control a standalone single-stage photovoltaic pumping system with a permanent magnet synchronous motor. Using a solar photovoltaic array, this topology converts solar energy into electrical energy while extracting maximum power from the solar photovoltaic array. Converted electrical energy is delivered to permanent magnet synchronous motor drive by voltage source inverter. The permanent magnet synchronous motor rotates the water pump mechanically coupled to the permanent magnet synchronous motor through a shaft. Through MATLAB/Simulink environment, the photovoltaic pumping system is modeled and simulated. Steady-state and starting behaviors and the photovoltaic pumping system's dynamic performance are evaluated in different conditions by changes in solar irradiance. The comprehensive harmonic distortion analysis of stator currents shows that the suggested control offers low total harmonic distortion.