Patent ID: 6337803
Filing Date: 2002-01-08
Classification: H01L,H02M,H02P

Abstract:
A power module for an inverter which supplies three-phase alternating current to a three-phase alternating current motor provided with two first phase stator coils, two second phase stator coils, and two third phase stator coils, comprising:a substrate; a first inverter circuit formed on the substrate, the first inverter circuit comprising a first output bus bar which outputs a first current to one of the first stator coils, a second output bus bar which outputs a second current to one of the second stator coils, and a third output bus bar which outputs a third current to one of the third stator coils; and a second inverter circuit formed on the substrate, the second inverter circuit comprising a fourth output bus bar which outputs the first current to the other of the first stator coils, a fifth output bus bar which outputs the second current to the other of the second stator coils, and a sixth output bus bar which outputs the third current to the other of the third stator coils; wherein the first output bus bar and the fourth output bus bar are arranged in parallel with each other while a direction of the first current in the first output bus bar and a direction of the first current in the fourth output bus bar are opposite to each other, the second output bus bar and the fifth output bus bar are arranged in parallel with each other while a direction of the second curent in the second output bus bar and a direction of the second current in the fifth output bus bar are opposite to each other, and the third output bus bar and the sixth output bus bar are arranged in parallel with each other while a direction of the third current in the third output bus bar and a direction of the third current in the sixth output bus bar are opposite to each other.