关键词: 三电平拓扑, 功率模块, 关键技术

Abstract: The power module contains the main core components in the three-level topology,and the rationality of its design directly affects the performance, reliability and cost-effectiveness of the system. This paper takes the neutral point clamped type of three-level topology as an example to analyze the key technologies in its power module design. The theoretical calculation method for device selection, the design scheme for structural layout, the design method for lowsensitivity commutation circuits and the simulation calculation method for losses were proposed. It has effectively improved the qualification rate and efficiency of the three-level power module design.

Key words: three-level, power module, key technology