Modular Equipment Center Integrated Truss Sensors

• US 20150103458A1
• Filed: 10/11/2013
• Published: 04/16/2015
• Est. Priority Date: 10/11/2013
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Liffring, Mark E., Holley, Robert D., Larsen, Ty A., Paterson, John T., Schaffner, Lowell W., Severns, Christopher M., Hasenoehrl, Thomas R., Shander, Mark S., Tai, Seth C., Yabut, Ronald C.
• Granted Patent: US 9,183,983 B2
• Time in Patent Office: Days
• US Class Current: 361/93.1
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02G 13/00 Installations of lightning conductors; Fastening thereof to supporting structure
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields

Abstract

A modular truss assembly for mechanically and electrically mounting system components of a modular equipment center (MEC). A plurality of MECs is spatially distributed throughout the vehicle to service equipment loads. The modular truss assembly provides different voltage levels for powering the system components of the MEC and for powering the equipment loads. In one or more configurations, a MEC incorporate inductive power coupling for powering a line replaceable unit (LRU) in proximity to the modular truss assembly without exposed electrical connections and such that the MEC may forgo power conversion equipment. In one or more configurations, a sensor is embedded in one or more transfer layers of the truss for measuring a power trace embedded in the modular truss assembly.

Claims

1. A system for powering a line replaceable unit (LRU) without exposed electrical connectors, the system comprising:

a truss assembly comprising a plurality of transfer layers;

a primary coil of an inductive power coupling system within one or more of the transfer layers of the truss assembly; and

a secondary coil of the inductive power coupling system within the LRU, wherein the primary coil induces a current in the secondary coil when the secondary coil within the LRU is in proximity of the primary coil within the truss assembly.

2. The system of claim 1 wherein the primary coil within the truss assembly is powered by a primary power source distributing primary power to the truss assembly.

3. The system of claim 2 wherein the LRU receives high voltage AC power from the truss assembly.

4. The system of claim 2 wherein the LRU converts primary power received from the truss assembly.

5. The system of claim 1 free of power conversion equipment other than within the LRU.

6. The system of claim 1 wherein a frequency of primary power is increased by a power converter prior to transmission to the primary coil.

7. The system of claim 1 wherein a modular equipment center (MEC) comprises a truss assembly and the LRU, and wherein the MEC is free power conversion equipment other than within the LRU.

8. The system of claim 1 wherein the inductive power coupling system is a ferrous core design.

9. The system of claim 1 wherein the inductive power coupling system is an air core design.

10. A modular equipment center (MEC) for a vehicle comprising a truss assembly for mounting the MEC with the vehicle and a primary coil of an inductive power coupling system embedded in one or more power transfer layers of the truss assembly, the primary coil configured to receive primary electrical power and to induce a current in a secondary coil of the inductive power coupling system within a Line Replaceable Unit (LRU) when the LRU is positioned in proximity of the primary coil and mounted to the truss assembly of the MEC.

11. The MEC of claim 10 wherein the primary coil is configured to receive primary electrical power through a frequency increasing inverter.

12. A method for inductively powering a line replaceable unit (LRU) comprising:

powering a truss assembly comprising one or more transfer layers with primary power;

generating magnetic flux lines by passing current through a primary coil embedded in one or more transfer layers of the truss assembly; and

inducing a current in a secondary coil of the LRU to power the LRU when the secondary coil is in proximity to the primary coil such that the flux lines intersect the secondary coil.

13. The method of claim 12 wherein powering the truss assembly with primary power comprises powering the truss assembly through a frequency increasing power converter.

14. The method of claim 12 further comprising the LRU creating an AC power output for powering one or more equipment loads.

15. The method of claim 12 further comprising the LRU creating a DC power output for powering one or more equipment loads.

16. The method of claim 12 further comprising converting the primary power received at the LRU directly into a voltage required for powering an equipment load.

17. A multilayered truss assembly of a modular equipment center (MEC) within a vehicle, comprising;

a plurality of transfer layers;

a trace routed through at least one transfer layer permitting electrical power through the truss assembly; and

a sensor embedded within one or more of the plurality of transfer layers.

18. The multilayered truss assembly of claim 17 wherein the sensor interfaces with a CNI module of the MEC.

19. The multilayered truss assembly of claim 17 wherein the sensor comprises a coil wrapped around the trace.

20. The multilayered truss assembly of claim 19 wherein vias connect upper portions of the coil in one transfer layer with lower portions of the coil in another transfer layer such that the coil is wound continuously around a portion of the trace.

21. The multilayered truss assembly of claim 17 wherein the sensor comprises a multi-layer Rogowski coil wherein a portion of the Rogowski coil is within power transfer layers above and parallel to the trace and another portion of the Rogowski coil is within other power transfer layers below and parallel to the trace.

22. The multilayered truss assembly of claim 21 wherein the Rogowski coil is oval.

23. The multilayered truss assembly of claim 21 wherein overlapping first and second coil portions of the Rogowski coil above the trace are interconnected with vias, overlapping third and fourth coil portions of the Rogowski coil below the trace are interconnected with vias, and the first and third coil portions are interconnected with a via and the second and fourth coil portions are interconnected with a via.

24. The multilayered truss assembly of claim 17 wherein the sensor comprises a coil positioned between a distal end of a power trace in one transfer layer and a distal end of another power trace in another transfer layer, wherein the coil and distal ends of the power traces are aligned.

25. The multilayered truss assembly of claim 17 wherein the sensor is a temperature sensor.

26. The multilayered truss assembly of claim 25 wherein the temperature sensor is used in conjunction with a current sensor to compensate for ambient temperature.

27. The multilayered truss assembly of claim 25 wherein the temperature sensor measures the temperature of a component mounted to the truss assembly.

28. The multilayered truss assembly of claim 17 wherein the sensor is a Rogowski coil integrated into one or more layers of the multilayer truss assembly and encircling one or more power input and output conductors of a modular equipment center (MEC).

29. The multilayered truss assembly of claim 28 wherein the Rogowski coil encircles at least one phase of three phase power within the MEC.

30. The multilayered truss assembly of claim 28 wherein an output of the coil is interfaced with a computer and network interface (CNI) module of the MEC.

31. The multilayered truss assembly of claim 17 wherein the sensor is a coil integrated into one or more layers of the multilayer truss assembly and encircling one or more communication data lines.

32. The multilayered truss assembly of claim 17 wherein a matrix of sensors embedded within the multilayered truss assembly is utilized to manage a solid state switch array.

33. The multilayered truss assembly of claim 32 wherein the solid state switch array comprises a field effect transistor (FET) array.

34. The multilayered truss assembly of claim 17 wherein the sensor is an optical sensor.

35. The multilayered truss assembly of claim 17 wherein the sensor is a voltage sensor.

36. The multilayered truss assembly of claim 17 wherein the sensor is a current sensor.

37. A method for detecting fault current within an electrical power distribution assembly comprising:

encircling a plurality of power input sources and a plurality of output sources with a Rogowski coil;

measuring current with the Rogowski coil;

transmitting a measured current to a CNI module;

comparing the measured current against a defined threshold and time criteria;

disconnecting at least one power input source if the measure current exceeds the defined threshold; and

reporting the disconnection of the at least one power input source to other equipment.

38. A method for detecting fault current within an electrical power distribution assembly comprising:

encircling a plurality of power input sources and a plurality of power output sources with a plurality of Rogowski coils;

measuring current with the Rogowski coils;

transmitting a measured current from a CNI module to one or more other CNI modules;

comparing a measured current with a defined threshold and time criteria;

determining which power input source to disconnect to stop current that exceed the defined threshold and time criteria;

disconnecting via at least one CNI module one or more power input sources; and

reporting disconnection of the one or more power input sources.

39. The method of claim 38 further comprising the step of transmitting power input source disconnect commands to the one or more other CNI modules.