Numerical Design of An Off-grid Solar Photovoltaic System for Office Shelter

Abstract

Electricity is essential needs for domestic and office applications. Due to the shortcomings from the national grid, renewable resources are prepared for alternative power supply rather than fossil fuels generators which pollute the environment. To provide a constant power supply, an off-grid solar PV system should adequately be designed. This paper presents the design of an off-grid solar PV system for office shelter. Solar thermal and solar photovoltaic (PV) systems can be used to generate electricity from sun energy, which is the ultimate energy source. The load assessment and market survey have been conducted and the system components sizes were evaluated. The expected output of the PV modules was evaluated. The result highlights that for a 165 W, 850 Wh/day load demand, pieces of 80 W PV module, piece of 12 V, 20 A charge controller, piece of 100 Ah deep battery, and 1 KVA inverter are feasible. The estimated power output from PV module was reported to be greater than the power consumption. The PV power output varies seasonally and depends duly on solar radiation and efficiency of the solar module. If this design is adopted a sustainable, alternative, and clean power supply would be provided for office shelter.