Large-power photovoltaic inverter

The utility model relates to a large-power photovoltaic inverter, which relates to inverters. A three-phase full-bridge inversion unit of an existing large-power photovoltaic inverter adopts an integral structure, so that the space utilization rate of a machine cabinet is low, the heat radiation is non-uniform, the requirement on a working environment of the equipment is strict, and the production, installation and maintenance are troublesome. The large-power photovoltaic inverter is characterized by comprising multiple groups of independent inversion units, wherein each group of inversion units comprises a fixed stander as well as a heat radiator, a centrifugal fan, an insulated gate bipolar transistor (IGBT) module, a filter capacitor, a laminated bus-bar, a voltage sharing resistor, a drive module control circuit board, an output copper bar, a temperature sensor, a current sensor and a voltage sensor, which are arranged on the fixed stander, wherein the fixed stander is vertically arranged and comprises an