LOW INDUCTANCE BUS ASSEMBLY AND POWER CONVERTER APPARATUS INCLUDING THE SAME

• US 20200136522A1
• Filed: 10/25/2018
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Inventors: Nojima, Geraldo
• Granted Patent: US 11,070,140 B2
• Time in Patent Office: Days
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H02M 7/797 using semiconductor devices only
• CPC Class Codes: H05K 5/0021 Side-by-side or stacked arrangements
• CPC Class Codes: H05K 5/0247 Electrical details of casings, e.g. terminals, passages for cables or wiring
• CPC Class Codes: H05K 5/04 Metal casings
• CPC Class Codes: H05K 7/04 on conductive chassis

Abstract

An apparatus, such as a power converter, includes first, second and third core bus plates arranged in parallel. The apparatus also includes a first bus extension plate joined to the first core bus plate and extending therefrom at a first angle and a second bus extension plate joined to the second core bus plate and extending therefrom at a second angle. The apparatus further includes a third bus extension plated joined with the third core bus plate and disposed parallel to the first bus extension plate and a fourth bus extension plate joined with the third core bus plate and disposed parallel to the second bus extension plate.

Claims

1. An apparatus comprising:

first, second and third core bus plates arranged in parallel;

a first bus extension plate joined to the first core bus plate and extending therefrom at a first angle;

a second bus extension plate joined to the second core bus plate and extending therefrom at a second angle; and

a third bus extension plated joined with the third core bus plate and disposed parallel to the first bus extension plate; and

a fourth bus extension plate joined with the third core bus plate and disposed parallel to the second bus extension plate.

2. The apparatus of claim 1, wherein the third core bus plate is disposed between the first and second core bus plates.

3. The apparatus of claim 1:

wherein the first bus extension plate extends from the first core bus plate in a first direction perpendicular to a plane of the first core bus plate;

wherein the second bus extension plate extends from the second core bus plate in a second direction opposite the first bus direction;

wherein the third bus extension plate extends from the third core bus plate in the first direction; and

wherein the fourth bus extension plate extends from the third core bus plate in the second direction.

4. The apparatus of claim 3, wherein the third and fourth bus extension plates lie in the same plane.

5. The apparatus of claim 3, wherein the first bus extension plate comprises a first planar member that joins the first core bus plate at a first arcuate joint, wherein the second bus extension plate comprises a second planar member that joins the second core bus plate at a second arcuate joint and wherein the third and fourth bus extension plates comprise third and fourth planar members that join the third core bus plate at a rounded Y joint.

6. The apparatus of claim 1, wherein the first bus extension plate joins the first core bus plate at a first edge thereof and wherein the second bus extension plate joins the second core bus plate at a first edge thereof, and wherein the apparatus further comprises:

a fifth bus extension plate joining the first core bus plate at a second edge thereof and extending therefrom at a third angle;

a sixth bus extension plate joining the second core bus plate at a second edge thereof and extending therefrom at a fourth angle;

a fourth core bus plate disposed in parallel with the first, second and third core bus plates;

a seventh bus extension plate joined to the fourth core bus plate and disposed parallel to the fifth bus extension plate; and

an eighth bus extension plate joined to the fourth core bus plate and disposed parallel to the sixth bus extension plate.

7. The apparatus of claim 6, wherein the first and fifth bus extension plates extend from the first core bus plate in a first direction perpendicular to a plane of the first core bus plate, wherein the second and sixth bus extension plates extend from the second core bus plate in a second direction opposite the first direction.

8. The apparatus of claim 7, further comprising:

a ninth bus extension plate joining the first core bus plate at a third edge thereof and extending therefrom at a fifth angle;

a tenth bus extension plate joining the second core bus plate at a third edge thereof and extending therefrom at a sixth angle;

a fifth core bus plate arranged in parallel with the first, second, third and fourth core bus plates;

an eleventh bus extension plate joined to the fifth core bus plate and disposed parallel to the ninth bus extension plate; and

a twelfth bus extension plate joined to the fifth core bus plate and disposed parallel to the tenth bus extension plate.

9. The apparatus of claim 8, wherein the first, fifth and ninth bus extension plates extend from the first core bus plate in the first direction and wherein the second, sixth and tenth bus extension plates extend perpendicularly from the second core bus plate in the second direction.

10. The apparatus of claim 8, wherein the third, fourth and fifth core bus plates are disposed between the first and second core bus plates.

11. The apparatus of claim 6, wherein the third and fourth core bus plates are disposed between the first and second core bus plates.

12. The apparatus of claim 1, further comprising:

a first semiconductor switching device electrically connected to ends of the first and third bus extension plates; and

a second semiconductor switching device electrically connected to ends of the second and fourth bus extension plates.

13. The apparatus of claim 12, comprising a power converter circuit including the first and second semiconductor devices, wherein the first core bus plate and the first bus extension plate are components of a first DC bus of the power converter circuit, wherein the second core bus plate the second bus extension plate are components of a second DC bus of the power converter circuit, and wherein the third core bus plate, the third bus extension plate and the fourth bus extension plate are components of an input bus and/or an output bus of the power converter circuit.

14. The apparatus of claim 13, further comprising:

a first capacitor electrically connected to the first bus core plate; and

a second capacitor electrically connected to the second bus core plate.

15. The apparatus of claim 14, further comprising:

a fifth bus extension plate joined to the first bus core plate, extending at an angle therefrom and electrically connected to a first terminal of the first capacitor;

a sixth bus extension plate joined to the second bus core plate, extending at an angle therefrom and electrically connected to a first terminal of the second capacitor; and

a common plate parallel to the fifth and sixth bus extension plates and electrically connected to second terminals of the first and second capacitors,

wherein the third bus core plate has a portion extending between the fifth and sixth bus extension plates and through an opening in the common plate.

16-20. -20. (canceled)