Solar PV Fed Buck boost Converter Based BLDC Motor for Air Cooler Application
Solar photovoltaic (SPV) power systems can be employed as electrical power sources to meet the daily residential energy needs of rural areas that have no access to grid systems. In view of this, a standalone SPV powered air cooling system is proposed in this work, which constitutes a DC-DC buck-boost converter, two voltage source inverters (VSI) connected to two brushless dc (BLDC) motors which are coupled to a centrifugal water pump and a fan blower. To maximize the power output of the SPV system, Perturb & Observe (P&O) based maximum power point tracking (MPPT) algorithm is used. While the VSI executes the electronic commutation of the BLDC motor, the variable DC link voltage controls the speed of BLDC motor to attain the required speed for the fan blower. The air cooling system is developed and simulated using the MATLAB/Simulink environment considering the dynamic and steady state variation in the solar irradiance.