BACKFEED SOFT-START CIRCUIT FOR STRING PHOTOVOLTAIC INVERTER

A backfeed soft-start circuit for a photovoltaic inverter is provided. The backfeed soft-start circuit includes a plurality of branch switches. A solar photovoltaic array includes a plurality of photovoltaic modules, where the plurality of branch switches are in a one-to-one correspondence with the plurality of photovoltaic modules, and when the plurality of branch switches are turned on, the corresponding photovoltaic modules are connected to the backfeed soft-start circuit; and a primary switching switch. The branch switches is connected to a corresponding photovoltaic module, and the primary switching switch. The primary switching switch is turned on after the branch switch is turned on.