Substrate-level DC bus design to reduce module inductance
First Claim
Patent Images
1. A DC Bus for use in a power module, comprising:
- a negative bus plate; and
a positive bus plate substantially parallel to said negative bus plate, wherein said positive bus plate and said negative bus plate are configured for placement substantially centered with respect to a power module.
4 Assignments
0 Petitions
Accused Products
Abstract
A DC bus for use in a power module includes a positive DC conductor bus plate parallel with a negative DC conductor bus plate. The positive bus and negative bus permit counter-flow of currents, thereby canceling magnetic fields and their associated inductances, and the positive and negative bus are connectable to the center portion of a power module.
-
Citations
18 Claims
-
1. A DC Bus for use in a power module, comprising:
-
a negative bus plate; and
a positive bus plate substantially parallel to said negative bus plate, wherein said positive bus plate and said negative bus plate are configured for placement substantially centered with respect to a power module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A DC Bus for use in a power module, comprising:
-
a positive DC conductor bus plate;
a negative DC conductor bus plate placed parallel to said positive bus;
a positive lead connected to said positive bus plate, wherein said positive leads are connectable to a positive terminal of a power source;
a negative lead connected to said negative bus plate, wherein said negative leads are connectable to a ground terminal;
a positive connection fastenable from said positive bus plate to a high side of a power module;
a negative connection fastenable from said negative bus plate to a low side of a power module;
wherein said positive bus plate and said negative bus plate permit counter-flow of currents thereby canceling magnetic fields and their associated inductances; and
wherein said positive bus plate and said negative bus plate are configured to be located between the high side and the low side of the power module; and
wherein said positive bus plate and said negative bus plate are shaped to be connected substantially parallel to the substrate of the power module. - View Dependent Claims (12, 13, 15, 17, 18)
-
-
14. A power module for reducing inductance, comprising:
-
a lead frame for supporting the module and for providing interconnections to the motor and power source;
a substrate connected to said lead frame;
one or more pairs of high and low switches at the substrate level of the module;
a positive DC bus plate connected to the center portion of the power module;
a negative DC conductor bus plate placed parallel to said positive bus;
one or more positive leads connected to said positive bus, wherein said positive leads are connectable to a positive terminal of a power source;
one or more negative leads connected to said negative bus, wherein said negative leads are connectable to ground;
one or more positive connections fastenable from said positive bus to the high side of a power module;
one or more negative connections fastenable from said negative bus to the low side of a power module;
wherein said positive bus and said negative bus permit counter-flow of currents thereby canceling magnetic fields and their associated inductances;
wherein said positive bus and said negative bus are located between the high side and the low side of the power module; and
wherein the positive bus and the negative bus are shaped to be connected substantially parallel to the substrate of the power module.
-
-
16. A method of reducing inductance in a power module comprising:
-
allowing DC current to flow substantially symmetrically and directly to the switches of the module; and
permitting counter-flow of electric currents, thereby canceling magnetic fields and their associated inductances.
-
Specification