Enhancing Power Quality in Grid Connected Solar - Wind Hybrid Energy System

ABSTRACT: The Hybrid Renewable Energy Resources (HRERs) will help to generate continuous power supply and energy feed into grid. The hybrid system includes PV array, permanent magnet synchronous generator (PMSG), DC-DC converter, voltage source converter (VSC), ripple filter, and a distribution network. The proposed hybrid system feeds the active power to the distribution system, provides an effective use of solar PV array and wind power. The hybridsystem with MPPT algorithm-based control scheme is used for obtaining the maximum power from the PV and wind scheme to control the switching pulses of the DC-DC buck and boost converter. In addition, it utilizes renewable energy to improve the dynamic response and reduces the burden on the proportional-integral (PI) controller by regulating DC bus voltage. The Renewable energy systems such as photovoltaic (PV) and wind energy systems are widely designed grid connected or autonomous. This is a problem especially in small powerful system due to the restriction on the inverter markets. Inverterswhich are utilized in these kinds of energy systems operate on grid or off grid. A novel 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 inverter used designed to operate both on-grid and off-grid. Due to the continuous demand for energy, gel batteries are used in the hybrid system. The designed Power Management Unit performs measurement from various points in the system and in accordance with this measurement; it provides an effective energy transfer to batteries, loads and grid. KEYWORDS: Solar PV, Wind, Grid, Power Quality and Harmonics