An improved maximum power point tracking for a photovoltaic system with current sensor-less for solar water pumping system application

This article proposes a straightforward and inexpensive maximum power point tracking (MPPT) method for a photovoltaic system (PVS) that feeds a water pumping system (WPS) that uses a brushless DC (BLDC) motor. The MPPT method is carried out with the assistance of a boost converter, which also supplies the necessary DC bus voltage for the voltage source inverter (VSI) that supplies the motor. . In addition, the battery energy storage system (BESS) based lithium battery was integrated with the PVS to enhance the performance of the BLDC motor under bad weather conditions. Moreover, the suggested WPS is designed and tested under different irradiance levels to show the performance of the PVS and the BLDC motor. The simulation results are obtained using MATLAB software program. It has been shown that the proposed MPPT would enhance the functionality of PV system-based WPS in a variety of climates. A comparison with the traditional P&O MPPT demonstrates that the suggested technique converges more rapidly and keeps a good steady state oscillation in the PV power even when environmental circumstances change. Additionally, the proposed method maintains an excellent oscillation in the PV power.