Series-resonant inverter for photovoltaic applications

This paper describes a single-phase, series-resonant inverter which injects a sinusoidal current into a load while a standard AC utility source is connected to the load and which can be used in photovoltaic applications. At moderate power levels the inverter requires DC input in the kilovolt range but will operate over a wide input voltage range. Control of the inverter is relatively simple and parallel operation with multiple DC sources with different DC input levels is easily accomplished. The circuit has no stand-alone capability at the present stage of development.