Energy Management for on-Grid and Off-Grid Systems Using Hybrid Energy Sources

摘要

Renewable energy systems such as photovoltaic (PV) and wind energy systems are widely designed grid connected or autonomous mode. This is a problem especially in small powerful system due to the restriction on the converter markets. Converters which are utilized in these kinds of energy systems operate on grid or off grid. In this project, an optimal power management strategy has been developed by designing a wind-PV hybrid system to operate both as an autonomous system and as a grid-connected system. The converter used in this study has been designed to operate both on-grid and off-grid. Due to the continuous demand for energy, gel batteries can be used in the hybrid system to store the energy in an efficient manner. The designed control Unit performs energy management for on grid and off grid wind/PV and battery hybrid systems by providing an effective energy transfer to batteries, loads and grid. So the designed control unit provided the opportunity to work more efficiently.