Common mode magnetic device for bus structure

• US 8,456,807 B2
• Filed: 07/16/2010
• Issued: 06/04/2013
• Est. Priority Date: 07/16/2010
• Status: Expired due to Fees

• Current Assignee: Rockwell Automation Technologies Incorporated (Rockwell Automation, Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Rockwell Automation, Inc.)
• Inventors: Tallam, Rangarajan M., Keegan, Jeremy J., Riley, Patrick J., Day, Scott D.
• Primary Examiner(s): SMITH, COURTNEY L
• Application Number:
  US12/838,091
• Publication Number:
  US 20120014042A1
• Time in Patent Office: 1,054 Days
• Field of Search: 361600-601, 361/605, 361610-611, 361/615, 361/622, 361/624, 361634-641, 361648-650, 361/675
• US Class Current: 361/637
• 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

A magnetic device mounting system is disclosed, such as for use in electrical cabinets for distribution of power via power bus bars. The system includes a common mode magnetic device that has an opening configured to receive extensions of a set of parallel bus bars. A non-conductive support is provided, along with a conductive extension, the non-conductive support and extension being configured to coordinate to engage the opening and to support the common mode magnetic device via attachment to the bus bar.

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 at least three pairs of electrically conductive extensions and electrically non-conductive supports extending from a corresponding set of three parallel bus bars to conduct three phases of electrical power through the opening;

an electrically non-conductive support of the electrically non-conductive supports; and

an electrically conductive extension of the electrically conductive extensions, wherein the electrically non-conductive support and the electrically conductive extension are configured to coordinate to form a one of the at least three pairs of electrically conductive extensions and electrically non-conductive supports, engage the opening, and support the common mode magnetic device via attachment of the electrically conductive extension to one or more of the set of three parallel bus bars.

2. The system of claim 1, wherein the common mode magnetic device 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 electrically conductive extension is configured to couple with a face of the bus bar such that the electrically conductive extension extends in a direction traverse to a length of the bus bar.

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

6. 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.

7. The system of claim 1, wherein the electrically 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 electrically conductive extension and expose end portions of the electrically conductive extension.

8. The system of claim 7, 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.

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

10. 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.

11. The system of claim 1, comprising the common mode magnetic device coupled with the set of three parallel bus bars via the at least three pairs of electrically conductive extensions and electrically non-conductive supports passing through the opening.

12. The system of claim 1, wherein the electrically 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.

13. A magnetic device mounting system, comprising:

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

a drive component housing including a receptacle formed in the housing with a plurality of electrically 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 electrically conductive features pass through the opening.

14. The system of claim 13, wherein the common mode magnetic device comprises magnetic tape wound about an obround perimeter of a mandrel.

15. The system of claim 13, comprising an inverter, wherein the drive component housing comprises an inverter housing.

16. The system of claim 15, wherein the electrically conductive features are communicatively coupled with an output of the inverter and are configured to couple with an electrically conductive cable or bus capable of providing power to a load.

17. The system of claim 13, 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 electrically conductive features include three electrically conductive features, each of which is coupled to a one of the three output buses.

18. 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 three parallel bus bars;

an electrically non-conductive support; and

an electrically conductive extension of the extensions, wherein the electrically non-conductive support and the electrically conductive extension are configured to coordinate to engage the opening and support the common mode magnetic device via an attachment to one or more of the set of three parallel bus bars, wherein the electrically conductive extension is configured to engage with an opening in the electrically non-conductive support such that the electrically conductive extension is separated from the common mode magnetic device by the electrically non-conductive support when the magnetic device mounting system is assembled.

19. 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 three parallel bus bars;

an electrically non-conductive support; and

an electrically conductive extension of the extensions comprising 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 bus bar face, wherein the electrically non-conductive support and the electrically conductive extension are configured to coordinate to engage the opening and support the common mode magnetic device via an attachment to one or more of the set of three parallel bus bars.

20. The system of claim 19, comprising the common mode magnetic device coupled with the set parallel bus bars via a plurality of electrically conductive extensions passing through the opening, wherein the plurality of electrically conductive extensions include the electrically conductive extension.