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Performance analysis of MPPT techniques in a PV-powered water pumping system using an induction motor
Hedi Ben Mahdhi1, Mongi Moujahed1, Marwa Ben Slimene2
1LISIER Lab, National Higher School of Engineers of Tunis, University of Tunis, Tunis, Tunisia.
Scientific Reports
|May 12, 2026
Summary
This study enhances photovoltaic water pumping systems (PVWPS) with an improved maximum power point tracking (MPPT) algorithm. The adaptive perturbation and observation (P&O) method boosts solar energy extraction efficiency and reduces oscillations for reliable water pumping.
Area of Science:
- Renewable Energy Engineering
- Electrical Engineering
- Sustainable Systems
Background:
- Photovoltaic water pumping systems (PVWPS) are crucial for sustainable water management, utilizing solar energy.
- Standard PVWPS configurations involve a photovoltaic (PV) generator, a boost converter, and a three-phase asynchronous motor (ASM) driving a pump.
- Optimizing power extraction and motor control are key to PVWPS efficiency.
Purpose of the Study:
- To introduce an enhanced perturbation and observation (P&O) maximum power point tracking (MPPT) algorithm with adaptive step-size control.
- To improve the efficiency of power extraction and reduce steady-state oscillations in PV systems.
- To validate the effectiveness of the Field-Oriented Control (FOC) strategy for the asynchronous motor in PVWPS.
Main Methods:
- Developed an enhanced P&O MPPT algorithm with adaptive step-size control for optimizing PV power output.
- Implemented a Field-Oriented Control (FOC) scheme to regulate the asynchronous motor via a voltage source inverter (VSI).
- Conducted extensive simulation analyses under varying irradiation levels and experimental validation using a dSPACE DS1104 processor.
Main Results:
- The enhanced P&O MPPT algorithm demonstrated superior tracking performance compared to conventional methods, significantly reducing steady-state oscillations.
- Improved efficiency in solar energy extraction was achieved under diverse irradiation conditions.
- Experimental validation confirmed the effectiveness of the FOC strategy in controlling the induction motor within the PVWPS.
Conclusions:
- The integrated enhanced P&O MPPT and FOC control strategies significantly improve the overall performance and efficiency of photovoltaic water pumping systems.
- The proposed adaptive P&O MPPT method offers a more robust and efficient solution for solar energy harvesting in PVWPS.
- The study provides a validated control approach for enhancing the reliability and performance of solar-powered water pumping applications.
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