A novel approach for solar combined open-ended winding induction machine for agriculture water pumping applications

This paper introduces a novel and comprehensive solution for a water-pump drive system powered by photovoltaic (PV) energy. The system incorporates an open-ended winding induction machine (OWIM) that is compelled by a double-inverters, enabling the functionalities of a three-level inverters while utilizing a lower-value DC-bus voltages. This configuration facilitates an optimum arrangements of solar panels, eliminating the need for large strings and enhancing the performances of the solar systems by enabling a wide operating voltage range. Additionally, the reduced potential ratings of the DC-linking capacitances and switching elements in the scheme leads to cost savings. The proposed controller approach links maximum power point tracking (MPPT) and V/f controllers, ensuring effective utilizations of both the solar modules and the motor. Notably, the controller system only necessitates detecting of solar voltages and current, resulting in a reduced number of sensors, thereby improving system simplicity and cost-effectiveness. This paper presents comprehensive analytical and simulation results, showcasing the system's performance under various environmental conditions.