Simulation and Implementation of an Expandable Hybrid Power System

A hybrid power system formed by photovoltaic generators, wind energy turbines, batteries and other renewable energy systems is one of the solutions to the increasing energy demand and the lack of energy in rural, remote and difficult to reach zones. A key issue is the selection of the suitable power system architecture and the proper way to implement it. This paper describes the feasibility of an innovative concept of autonomous electrical supply units with a power output larger than 20 kW. New strategies for the system development process have been tested. A PV/battery hybrid power system was successfully modeled, simulated and built up. Control functions for the system management have been developed, and integrated into a standard industrial soft PLC terminal. The results show that the developed system performance meets the design goals. Further, it uses standard industrial components which offer low prices, easy maintenance, high availability and high reliability.