A solar inverter, or converter or PV inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The Solar Inverter charges the battery from grid and Solar panel both. If Sun energy is available then It charges the battery from solar Panel and if Solar is not available, then the inverter charges the battery from Mains/Grid. It can charge the battery and supply solar power to connected load if solar generation is sufficient otherwise it gives first priority to solar battery charging and then supply additional power to connected loads.
The primary use of solar inverters is to convert direct current to alternating current through an electrical switching process. Solar technology has the potential to be used as alternative sources of energy.