8. Optimal Design and Analysis of Standalone Hybrid Renewable Energy Sources

The usage of renewable energy sources (RES) with energy storage like battery for standalone household and commercial purposes is becoming popular. These systems have to manage the given amount of generated energy from the RES. In this chapter, an efficient hybrid standalone system with its power management strategy has been developed. The proposed configuration is implemented to deal with the intermittent nature of the energy generated by the photovoltaic (PV) array and processing its power through a parallel combination of two converters. The two converters consist of a DC-DC boost converter and a buck converter. Apart from processing the PV power, the battery power is processed through a DC-DC full-bridge converter to maintain the required load voltage. A load voltage-based power management scheme along with the maximum power extraction from the PV source is also proposed in this chapter. The proposed power management scheme has been verified with both simulation and experimental results. An experimental prototype with a capacity of 150 watts is also made to show the different modes of operation of the proposed system and its smooth transition between various modes.