Energy-efficient Control Algorithm for a Solar-powered Deep-well Centrifugal Pump

This study develops an energy-efficient control algorithm for a solar-powered deep-well centrifugal pump. The system couples a PV array, inverter, battery storage, and an induction-motor-driven pump. Inputs include PV capacity (Panel), daily irradiance coefficient (k<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf>), inverter/battery efficiencies (k<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf>, k<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>), operating windows (t<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf>, t<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>), and motor/hydraulic data (phase count, pole pairs, magnetic permeability, rotor radius, impeller geometry, and head H<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf>). The algorithm computes magnetomotive force, flux density, and surface current density, verifies rotor torque against impeller demand, and then uses pressure–flow calculations to obtain lift height and discharge. Simulations with field-typical parameters indicate continuous irrigation with reduced energy use versus conventional operation, enabling real-time PV irrigation control in high-insolation regions (e.g., Fergana Valley).

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