Enhanced Grid-Interfaced Solar Water Pumping System Based on Sensorless PMSM Drive Using MRAS

This study focuses on a power transfer strategy that efficiently feeds a water pumping system (WPS) with a permanent-magnet synchronous motor from a solar photovoltaic (PV) array and a three-phase grid (PMSM). This system allows a consumer to use the water pump constantly at full capacity, regardless of the weather. The bidirectional power flow management between the grid and the DC bus of the voltage source inverter (VSI), which feeds the PMSM motor, is ensured by an active voltage source converter (VSC). The PMSM coupled to the water pump is driven by a sensorless control based on a model reference adaptive system (MRAS) with field-oriented control (FOC). An intermediate stage boost converter is used to extract the maximum power from a solar PV array when the irradiance is changeable. The perturb and observe (P&O) algorithm is used to produce the duty ratio for the maximum power point tracking. Voltage-oriented control (VOC) is used to control the system’s bidirectional power flow between the utility grid and a PV array that feeds a PMSM. The simulations of the suggested system and various control strategies were carried out in the MATLAB/Simulink environment.