Triple-symmetry three-level IGCT phase module

The embodiment of the invention discloses a triple-symmetry three-level IGCT phase module and belongs to the electric power and electron technical field. The phase module comprises a plurality of power assemblies, a press-mounting device and a heat dissipation assembly. The plurality of power assemblies includes a first power string, a second power string and a third power string. The heat dissipation assembly comprises a support tube and radiators fixed on the first power string, the second power string and the third power string, and the radiators are used for dissipating heat generated by the power assemblies. The press-mounting device comprises an upper pressing plate and a lower pressing plate and is used for mounting the first power string, the second power string and the third power string in a framework formed by the upper pressing plate, the support tube and the lower pressing plate in a pressing manner. The second power string and the third power string are symmetric with regard to a longitudinal line passing the first power string. The three-level IGCT phase module has the advantages that the integration degree is high, the stray inductance is low, the pressing mounting control is accurate, the uniformity of the press mounting is good, the maintenance is convenient, the potential capability of IGCT devices are fully developed, and the output capability of the phase module is substantially improved.