POWER STACK STRUCTURE AND METHOD

摘要

A power conversion apparatus includes plural press-pack power semiconductor devices; plural thermal and electric conducting blocks provided among the plural press-pack power semiconductor devices; and plural bus bars provided among the plural press-pack power semiconductor devices and the plural thermal and electric conducting blocks to form a first column that is clamped under a predetermined mechanical force. The plural bus bars are directly pressed in the first or more columns for electrical connection, at least one of the press-pack power semiconductor devices is sandwiched between two thermal and electrical conducting blocks, and at least one of the bus bars is sandwiched between two thermal and electric conducting blocks. A method for assembling the power conversion apparatus is also provided. The apparatus and the method can provide optimum heat transfer for press-pack power semiconductor devices and minimum commutation loss and stress.

主权项

1. A power conversion apparatus, comprising:
plural press-pack power semiconductor devices; plural thermal and electric conducting blocks among the plural press-pack power semiconductor devices; and plural bus bars among the plural press-pack power semiconductor devices and the plural thermal and electric conducting blocks to form at least one column comprising a first column clamped under a predetermined mechanical force, wherein:
the plural bus bars are directly pressed in the at least one column for electrical connections,at least one of the plural press-pack power semiconductor devices is sandwiched between two of the plural thermal and electric conducting blocks, andat least one of the plural bus bars is sandwiched between two of the plural thermal and electric conducting blocks.