Direct current photovoltaic power generation converter

The utility model relates to a direct current photovoltaic power generation converter, including parallelly connected first bridge arm unit, second bridge arm unit and the third bridge arm unit that sets up, all be equipped with the power switch pipe in first, second, the third bridge arm unit, the one end of first, second, third bridge arm unit links to each other with the dc bus, and photovoltaic array's output is connected respectively to the other end through first inductance, second inductance and third inductance. The utility model discloses a converter is equipped with the parallelly connected bridge arm unit of three routes, and each road bridge arm unit is all established ties has a plurality of power open pipes, can undertake bigger electric current through the parallelly connected messenger's circuit that sets up of three road bridge arm units, and parallelly connected setting of three routes makes the circuit each other be reserve function in addition, and a bridge arm element circuit breaks down