Integration of a power flow control unit

1. A power flow control unit comprising:

one or more impedance injection units, each impedance injection unit comprising a plurality of high current drivers and a plurality of capacitors forming a capacitor bank;

a cooling plate, thermally coupled to the plurality of high current drivers and thermally decoupled from the capacitor bank; and

bus bars to connect the one or more impedance injection units in series with a power transmission line, with the power flow control unit configurable to inject reactive power into the power transmission line.

2. The power flow control unit of claim 1 , wherein the reactive power injected into the power transmission line is at least one MVAr (mega volt-ampere reactive).

3. The power flow control unit of claim 1 , further comprising:

a plurality of differential mode chokes each in series with one of the bus bars.

4. The power flow control unit of claim 1 , further comprising:

a plurality of differential mode chokes each comprising an air core.

5. The power flow control unit of claim 1 , further comprising:

a plurality of differential mode chokes each comprising a core of magnetic material.

6. The power flow control unit of claim 1 , wherein each of the one or more impedance injection units utilizes a wall of the power flow control unit as a cooling plate.

7. The power flow control unit of claim 1 , wherein the bus bars include at least a portion of braided copper wires that provides flexibility and adaptability to manufacturing tolerances.

8. The power flow control unit of claim 1 , wherein the cooling plate comprises aluminum.

9. The power flow control unit of claim 1 , wherein the bus bars comprise at least a portion of braided copper wires terminated with crimped solid copper ferrules.

10. The power flow control unit of claim 1 wherein the one or more impedance injection units comprises two to six impedance injection units.

11. A method for integrating a power flow control unit, comprising:

arranging at least one wall of the power flow control unit as at least one cooling plate;

thermally coupling at least one capacitor bank to a mounting assembly that is thermally decoupled from the at least one cooling plate;

thermally coupling at least one plurality of high current switches to the at least one cooling plate; and

connecting components, including the at least one plurality of high current switches, using bus bars, wherein the power flow control unit is operable to connect in series with a power transmission line and inject reactive power into the power transmission line.

12. The method of claim 11 , further comprising:

connecting differential mode chokes in series with one or more portions of the bus bars.

13. The method of claim 11 , wherein the at least one wall comprises one to six walls, each wall associated with a corresponding capacitor bank and a corresponding plurality of high current switches.

14. The method of claim 11 , wherein the connecting components using bus bars comprises connecting to at least one of the components using braided copper wires.

15. The method of claim 11 , wherein at least one termination of the bus bars comprises a crimped solid copper ferrule.

16. The method of claim 11 , wherein the at least one cooling plate comprises a finned region for air cooling.

17. The method of claim 11 , wherein the at least one cooling plate comprises one to four cooling plates.

18. The method of claim 11 , wherein the at least one wall comprises a plurality of pairs of opposing walls.

19. The method of claim 11 , wherein the at least one wall comprises a plurality of pairs of opposing walls, each of the opposing walls having a set of high current switching devices, a capacitor bank, and bus bars, arranged in a mirror image configuration.

20. The method of claim 11 , wherein the reactive power to inject into the power transmission line is at least one MVAr (mega volt-ampere reactive).