Two-level inverter

Conventional  800 watt inverter is also commonly called the two-level converter and
inverter bridge circuit is generally used, this topology is relatively simple. Solar cell characteristics of a current source type, the PV array corresponds to a large inductance in series with the current source, and in this way connected to the grid, the grid is called the current source. To improve the grid current, the AC side filter capacitor needed, for photovoltaic cells connected in series to the inductor in the corresponding DC bus. Due to the presence of large inductance, the DC loop current is not easy to change when the  24 volt inverters  switching operation is not guaranteed if the inverter input current is stable, easy to produce higdi / dt, affect the safe operation of the inverter.