An inverter is a device which converts the DC input to AC output. The Source of the DC input can be a battery or an array of solar panel. The converted AC power is used directly in the local electrical network or can be fed into a electric grid depending on the type of invertor used. Thus the inverter used in solar system is called as a solar inverter. It is one of the critical components in a solar system as the conversion of the DC power generated by the solar PV array into AC only makes it immediately usable in the current existing system of electric network.
The solar invertor type varies based on the wattage of power it can handle, the no of power inputs it can take and alternate the use of the power inputs in an appropriate manner as per the configuration set in the invertor. The various inputs supported by the solar inverter are input from the solar array panels, grid, battery and generator. The capacity of the invertor depends on the capacity of the whole solar system. The inverter also has the charging circuitry for batteries in-built so that the solar energy generated and unused/excess is saved in the battery backup system for later use.