COMMON MODE MAGNETIC DEVICE FOR BUS STRUCTURE

• US 20120014042A1
• Filed: 07/16/2010
• Published: 01/19/2012
• Est. Priority Date: 07/16/2010
• Status: Active Grant

• Current Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Tallam, Rangarajan M., Keegan, Jeremy J., Riley, Patrick J., Day, Scott D.
• Granted Patent: US 8,456,807 B2
• Time in Patent Office: Days
• US Class Current: 361/679.01
• CPC Class Codes: H01F 17/06 with core substantially closed in itself, e.g. toroid
• CPC Class Codes: H01F 2017/0093 Common mode choke coil
• CPC Class Codes: H01F 2017/065 Core mounted around conductor to absorb noise, e.g. EMI filter
• CPC Class Codes: H01F 27/04 Leading of conductors or axles through casings, e.g. for tap-changing arrangements
• CPC Class Codes: H01F 27/266 Fastening or mounting the core on casing or support on coil H01F27/30
• CPC Class Codes: H01F 3/04 made from strips or ribbons
• CPC Class Codes: H01F 41/0213 Manufacturing of magnetic circuits made from strip(s) or ribbon(s) magnetic cores made by winding a ribbon H01F27/25

Abstract

Embodiment relate to an extruded high power electrical distribution. The bus can be employed in a MCC, a drive cabinet, or any such electrical enclosure to facilitate transmission of power. A body of the bus includes an elongate metal extrusion with first and second ridges extending along a length of the body from opposite edges of the body. Further, the bus includes a first groove and a second groove extending along the length of the body and into the body from a face of the body such that each of the first and second grooves comprises a cross-section having a narrow passage extending from the face into a broader cavity within the body. Additionally, the bus includes machined openings into each groove, wherein each of the machined openings is wider than the width of the corresponding groove to which it provides access.

Claims

1. A magnetic device mounting system, comprising:

a common mode magnetic device including an opening through the common mode magnetic device configured to receive extensions from a set of parallel bus bars;

a non-conductive support; and

a conductive extension, wherein the non-conductive support and the conductive extension are configured to coordinate to engage the opening and support the common mode magnetic device via attachment to a bus bar.

2. The system of claim 1, wherein the common mode magnetic deivce comprises magnetic tape wound about an obround perimeter of a mandrel such that the mandrel and magnetic tape are essentially concentric about the opening.

3. The system of claim 2, wherein the magnetic tape comprises a nanocrystalline soft magnetic material.

4. The system of claim 1, wherein the conductive extension is configured to engage with an opening in the non-conductive support such that the conductive extension is separated from the common mode magnetic device by the non-conductive support when the magnetic device mounting system is assembled.

5. The system of claim 1, wherein the conductive extension is configured to couple with a face of the bus bar such that the conductive extension extends in a direction traverse to a length of the bus bar.

6. The system of claim 1, wherein the conductive extension is configured to couple with the bus bar through an opening in the non-conductive support such that coupling the conductive extension with the bus bar couples the non-conductive support to the bus bar by wedging a wall of the non-conductive support against a face of the bus bar.

7. The system of claim 1, wherein the opening is obround and has a boundary that is essentially concentric with the obround perimeter of the mandrel.

8. The system of claim 1, wherein the non-conductive support comprises a first sleeve configured to receive a second sleeve such that the first and second sleeves surround side portions of the conductive extension and expose end portions of the conductive extension.

9. The system of claim 8, wherein the first sleeve and the second sleeve each include a projection configured to abut sides of the common mode magnetic device such that the common mode magnetic device is held between the first and second sleeves when the magnetic device mounting system is assembled.

10. The system of claim 1, wherein the conductive extension is integral with a bus extension configured to couple with an electronic component.

11. The system of claim 1, wherein the conductive extension comprises a via block configured to couple with a bus extension at a first end of the via block opposite a second end of the via block configured to couple with a face of the bus bar.

12. The system of claim 1, comprising a receptacle disposed within an outer wall of an electrical cabinet, wherein the receptacle is configured to receive the common mode magnetic device.

13. The system of claim 1, wherein the common mode magnetic device is coupled with a plurality of bus bars via a plurality of assembled conductive extensions and non-conductive supports passing through the opening.

14. The system of claim 1, wherein the conductive extension is configured to couple with a pair of grooves disposed along a face of the bus bar, wherein the bus bar comprises an extruded elongate body.

21. The common mode core of claim 1, wherein the magnetic tape comprises a nanocrystalline soft magnetic material.

22. The common mode core of claim 1, wherein the magnetic tape comprises a silicon iron alloy.

23. The common mode core of claim 1, wherein the opening is configured to receive an elongate conductive via block disposed within a non-conductive support.

24. The common mode core of claim 1, wherein the opening is configured to receive conductive extensions extending substantially perpendicularly from three substantially parallel bus bars.

15. A magnetic device mounting system, comprising:

a common mode magnetic device including an opening through the common mode magnetic device; and

an drive component housing including a receptacle formed in the housing with a plurality of conductive features extending from a central portion of the receptacle, wherein the receptacle is configured to receive the common mode magnetic device such that the plurality of conductive features pass through the opening.

16. The system of claim 15, wherein the common mode magnetic device comprises magnetic tape wound about an obround perimeter of a mandrel.

17. The system of claim 15, comprising an inverter, wherein the drive component housing comprises an inverter housing.

18. The system of claim 17, wherein the conductive features are communicatively coupled with an output of the inverter and are configured to couple with a conductive cable or bus capable of providing power to a load.

19. The system of claim 15, comprising:

three input buses disposed in the enclosure and configured to receive three-phase AC power;

a converter coupled to the three input buses for receiving the three-phase AC power from the input buses and converting the three-phase AC power into DC power;

a pair of DC conductors coupled to the converter for transmitting the DC power;

an inverter coupled to the DC conductors for receiving the DC power and converting the DC power to a desired AC power sufficient to drive the load;

three output buses coupled to the inverter for transmitting the desired AC power to the load;

wherein the plurality of conductive features include three conductive features, each of which is coupled to a one of the three output buses.

20. A common mode core, comprising:

a mandrel having an obround perimeter and an opening through the mandrel configured to coordinate with extensions from a plurality of parallel bus bars; and

magnetic tape wound about the perimeter of the mandrel.