High-capacity IGBT (Insulated Gate Bipolar Translator) multi-parallel power unit

The utility model relates to a high-capacity IGBT multi-parallel power unit, which comprises a shell, a water-cooling radiator, a control mechanism and two IGBT modules, and further comprises an alternating current bar, a laminated busbar assembly and a capacitor assembly, the water-cooling radiator, the control mechanism and the two IGBT modules are arranged in the shell, each IGBT module comprises at least three parallel IGBT modules, the IGBT modules are arranged on a radiator assembly, the alternating current bar and the laminated busbar assembly are correspondingly connected with the IGBT modules, and the capacitor assembly is arranged on the shell. The IGBT modules and the capacitor assembly are connected through the laminated busbar assembly, devices in the power unit are arranged in a surrounding mode and are completely symmetrical in structure, the two IGBT modules and the radiator module are distributed on the left side and the right side of the internal space, the heat dissipation performance is go