Standalone BLDC based solar air cooler with MPPT tracking for improved efficiency

This paper proposes the idea of using Solar Energy as a source of power for designing and developing standalone air cooling system with longer life, less maintenance and better performance, particularly useful for rural areas that have a considerable amount of solar radiation and have no access to grid systems. This system comprises of a photovoltaic (PV) array along with DC-DC boost converter that ensures maximum power point (MPP) operation. Two Permanent Magnet Brushless Direct Current (BLDC) motors are employed to drive a centrifugal water pump and an air blower coupled to their individual shafts. The proposed air cooling system is designed to obtain satisfactory system performance even under dynamic conditions. Suitability of the proposed system for various perturbations is evaluated by simulating the proposed system using MATLAB/Simulink.