Voltage control of hybrid power conversion system under voltage sag condition

With the decrease in energy consumption of portable electronic devices, the concept of harvesting renewable energy in human surrounding arouses a renewed interest. This Project presents a control of hybrid Photovoltaic (PV)/Wind, using a DC/DC converter for compressor load. The aim of this project is to implement the converter and inverter for the wind/solar hybrid system. For the hybrid system, extracting wind and solar energy as much as possible, and feeding the load with high quality electricity are the two main targets. Boosting the DC voltage to a sufficient level, using the converter and obtaining pure AC voltage from the inverter, are the keys to realize the above targets. The hybrid system is studied under unbalance voltage sag condition. It paper uses a MATLAB simulation tool for voltage control. It describes the closed loop mechanism of the boost and buck-boost converter, and the simulated results are presented, to show the system performance.