DESIGNING AND PERFORMANCE ANALYSIS OF HYBRID INVERTER

Hybrid inverters are used to perform in multimode operation. A micro grid system consisting of different types of renewable energy sources are used to get uninterrupted power supply with the help of hybrid inverter. In this paper we have proposed a design of micro grid having hybrid inverter using MATLAB Simulink. A 250-kW grid-connected photovoltaic (PV) plant systems have been installed at the Ministry of Electricity in Baghdad and penetrated to the Iraqi national grid since November 2017. Solar PV energy is one of the most promising renewable resources that use the abundant and free energy from the sun having clean, inexhaustible and environmentfriendly cyclic operations. However, the intermittent nature of the output power of PV systems reduces their reliability in providing continuous power to customers. Solar PV energy can be used mainly in standalone (off-grid) and grid connected system. A standalone solar PV cannot provide a continuous supply of energy due to seasonal and periodic variations. Therefore, in order to satisfy consumer load demand, grid connected PV energy systems that combine solar energy and other conventional conversion units are becoming more popular in recent years. But, the fluctuations in the PV output power with climatic conditions might lead to undesirable performance of the electric network in grid connected system.