Abstract
This paper presents a MATLAB based user friendly software tool called as PV.MY for optimal sizing of photovoltaic (PV) systems. The software has the capabilities of predicting the metrological variables such as solar energy, ambient temperature and wind speed using artificial neural network (ANN), optimizes the PV module/ array tilt angle, optimizes the inverter size and calculate optimal capacities of PV array, battery, wind turbine and diesel generator in hybrid PV systems. The ANN based model for metrological prediction uses four meteorological variables, namely, sun shine ratio, day number and location coordinates. As for PV system sizing, iterative methods are used for determining the optimal sizing of three types of PV systems, which are standalone PV system, hybrid PV/wind system and hybrid PV/diesel generator system. The loss of load probability (LLP) technique is used for optimization in which the energy sources capacities are the variables to be optimized considering very low LLP. As for determining the optimal PV panels tilt angle and inverter size, the Liu and Jordan model for solar energy incident on a tilt surface is used in optimizing the monthly tilt angle, while a model for inverter efficiency curve is used in the optimization of inverter size.
Highlights
Photovoltaic (PV) system installation has played an important role worldwide due to the fact that PV system is clean, environment friendly, and secure energy source
Many research works are carried out focusing on optimization of PV systems so that the number of PV modules, capacity of storage battery, capacity of inverter, and PV array tilt angle can be optimized
This software only generates the sizing curves without calculating the actual sizes of the PV system, and it does not take into account the optimal inverter size and PV module tilt angle
Summary
Photovoltaic (PV) system installation has played an important role worldwide due to the fact that PV system is clean, environment friendly, and secure energy source. The software tool named PV.MY has been developed with capabilities of calculating optimal PV module tilt angle, optimal sizing of PV system, wind generator, diesel generator, and battery as well as the inverter size. (iii) perform optimization of PV system by determining the optimum PV array/module tilt angle, PV array battery size, wind turbine, diesel generator, and inverter capacities. The calculated parameters are displayed as outputs in terms of the optimum PV array and battery sizes, the optimum tilt angle, the optimum inverter size, dump load, number of series and parallel PV modules, charge controller capacity, monthly average solar energy, and the system capital cost. The displayed outputs are the optimum capacity of the PV array, the daily generated power, inverter size, chopper rating, PV array configuration, and system cost
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