Patent ID: 9743509
Date: 2017-08-22
CPC Classifications: H02M,H05K

Claim:
1. An inverter type motor drive device for feeding or receiving three phase AC electric power to or from an electric motor, the inverter type motor drive device comprising: an insulated metal substrate board on which, for each of the three phases, a plurality of power switches are mounted in straight lines in switch assemblies, wherein two switch assemblies are assigned for each phase, and wherein the switch assemblies for all three phases are oriented along a first direction; a printed circuit board on which a plurality of capacitors are mounted, wherein the printed circuit board is essentially parallel to the insulated metal substrate board; and two DC power input terminals mounted on the printed circuit board; wherein the inverter type motor drive device further comprises three AC power output terminals mounted on the insulated metal substrate board, wherein each of the three AC power output terminals extend through the printed circuit board while avoiding galvanic contact with the printed circuit board, and each of the three AC power output terminals comprise an elongated AC busbar mounted to the insulated metal substrate board, wherein a longitudinal direction of the AC busbar extends along the first direction; wherein each of the two DC power input terminals comprise an input DC busbar, wherein the input DC busbar extends along the first direction.