Abstract:
Bangladesh is a developing country with a large population and a smaller area. A large area is still uncovered
either by grid electricity or by the electricity generated from renewable sources. Still solar home system is very popular
in Bangladesh with some unavoidable constraints. From this perspective, a hybrid AC mini grid system based on solar
PV has been designed for an off-grid region of Bangladesh. A survey was held on the rural people of that off-grid area
to gather different types of information to design a feasible hybrid AC mini grid system. Cost analysis has been done to
set-up the mini grid depending on the information using HOMER software. Furthermore, as it is a hybrid system, others
necessary parts have also been prepared to design a complete AC mini grid system. Some indispensable parts of AC mini
grid are centralized solar plant, Charge controller, transmission line, energy meter for every consumer and a common
Load Dispatch Center (LDC) to control the total system that has been introduced in this paper. Finally, a special grid-tie
inverter is designed to hook up the propose system with future National grid. Moreover, a power line carrier
communication has been established in order to control every consumer from LDC which can ensure a reliable mini grid
system for the off grid area in this paper. This kind of efficient & reliable AC mini grid can be a realistic solution for the
off-grid areas of Bangladesh
