Patent ID: 8031478
Filing Date: 2011-10-04
Classification: H05K

Abstract:
1. A power conversion apparatus comprising: a plurality of pairs of power modules which include semiconductor elements constituting a power conversion circuit for converting powers between DC and AC, a plurality of control circuit boards on which components constituting control circuits for driving and controlling said semiconductor elements are packaged, bus bars which connect said power conversion circuit and an external equipment, and a base on which, at least, said power modules and said control circuit boards are fixed; wherein said base includes a first fixation portion, a second fixation portion which is coupled to one end of said first fixation portion, and a third fixation portion which is coupled to the other end of said first fixation portion; said first fixation portion and said second fixation portion, and said first fixation portion and said third fixation portion are respectively coupled to each other at predetermined angles; said plurality of pairs of power modules are fixed on said first fixation portion of said base; at least one of said plurality of control circuit boards is fixed with a first principal surface of the at least one of said plurality of control circuit boards held in direct or indirect contact—with said second fixation portion of said base; said components are packaged on a second principal surface of said at least one control circuit board; at least one other control circuit board is fixed with a first principal surface of the at least one other control circuit board held in direct or indirect contact with said third fixation portion of said base; and said components are packaged on a second principal surface of said at least one other control circuit board.