Multi-function power regulator for prioritizing functions and allocating resources thereof

• US 9,401,636 B2
• Filed: 05/28/2014
• Issued: 07/26/2016
• Est. Priority Date: 05/28/2014
• Status: Expired due to Fees

• Current Assignee: Varentec Incorporated (KOCH Industries Incorporated)
• Original Assignee: GridCo, Inc.
• Inventors: Wu, Jia, Furlong, Darrell, Huang, Jing, Simonelli, James
• Primary Examiner(s): Mehari, Yemane
• Application Number:
  US14/288,943
• Publication Number:
  US 20150349629A1
• Time in Patent Office: 790 Days
• Field of Search: 323205-211, 323220-223, 323/299, 323/301, 363/34, 363/37, 363/40
• US Class Current: 1/1
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/18 Arrangements for adjusting, eliminating or compensating reactive power in networks for adjustment of voltage H02J3/16
• CPC Class Codes: H02J 3/1814 wherein al least one reactive element is actively controlled by a bridge converter, e.g. unified power flow controllers [UPFC]
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: H02M 1/0003 Details of control, feedback or regulation circuits
• CPC Class Codes: H02M 1/12 Arrangements for reducing harmonics from ac input or output
• CPC Class Codes: H02M 1/4208 Arrangements for improving power factor of AC input
• CPC Class Codes: H02M 3/04 by static converters
• CPC Class Codes: Y02E 40/10 Flexible AC transmission systems [FACTS]
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

A multi-function power regulator for prioritizing functions and allocating resources thereof, the multi-function regulator including a plurality of resources each having a resource capacity limit. The multi-function regulator also includes a shunt converter is configured to perform one or more shunt converter functions while consuming one or more of the resources, a series converter is configured to perform one or more series converter functions while consuming one or more of the resources. A control engine coupled to the shunt converter, the series converter, and a plurality of sensors, the control engine is configured to monitor and control the one or more shunt converter functions and the one or more series converter functions. The multi-function regulator also includes a priority control engine coupled to the control engine, the priority control engine is configured to set a priority order for performing the one or more shunt converter functions and/or the one or more series converter functions and configured to determine whether one or more resource capacity limits has been exceeded or not exceeded by the shunt converter functions and/or the series converter function and in response to one or more exceeded resource capacity limits adjust the operation of the shunt converter functions and/or the series converter based on the priority order such that the one or more resource capacity limits exceeded is no longer exceeded.

Claims

1. A multi-function power regulator for prioritizing functions and allocating resources thereof, the multi-function regulator comprising:

a plurality of resources each having a resource capacity limit;

a shunt converter configured to perform one or more shunt converter functions while consuming one or more of the resources;

a series converter configured to perform one or more series converter functions while consuming one or more of the resources;

a control engine coupled to the shunt converter, the series converter, and a plurality of sensors, the control engine configured to monitor and control the one or more shunt converter functions and the one or more series converter functions; and

a priority control engine coupled to the control engine, the priority control engine configured to set a priority order for performing the one or more shunt converter functions and/or the one or more series converter functions and configured to determine whether one or more resource capacity limits has been exceeded or not exceeded by the shunt converter functions and/or the series converter function and in response to one or more exceeded resource capacity limits adjust the operation of the shunt converter functions and/or the series converter based on the priority order such that the one or more resource capacity limits exceeded is no longer exceeded.

2. The multi-function power regulator of claim 1 in which the one or more shunt converter functions include voltage regulation on the DC bus, VAR regulation, and current harmonic mitigation.

3. The multi-function power regulator of claim 1 in which the one or more series converter functions includes voltage regulation and voltage harmonic mitigation.

4. The multi-function power regulator of claim 1 further including one or more control loop engines each having a loop filter with a loop gain adjuster responsive to the priority control engine configured to change the loop gain of the control loop engine such that the one or more resources consumed by the shunt converter functions and/or the series converter functions is adjusted based on the priority order.

5. The multi-function power regulator of claim 4 in which one or more of the control loop engines is configured to reduce the loop gain of the control loop engine when one or more of the resource capacity limits is exceeded such that the one or more of the resources consumed by the shunt converter functions and/or the series converter functions is reduced based on the priority order.

6. The multi-function power regulator of claim 4 in which one or more of the control loop engines is configured to increase the loop gain of the control loop engine when the all resources consumed by the one or more shunt converter functions and/or the one or more series converter functions do not exceed the one or more resource capacity limits to allow the one or more of the resources consumed by the shunt converter functions and/or the series converter functions to increase based on the predetermined priority order.

7. The multi-function power regulator of claim 1 further including one or more control loop engines each associated with a predetermined voltage harmonic and each having a loop filter with a loop gain adjuster responsive to the priority control engine configured to change the loop gain of the control loop engine such that one or more of the resources consumed by voltage harmonic mitigation is adjusted based on the predetermined priority order.

8. The multi-function power regulator of claim 7 in which one or more of the control loop engines is configured to reduce the loop gain of the control loop engine when the one or more resource capacity limits is exceeded such that one or more of the resources consumed by voltage harmonic mitigation is reduced based on the predetermined priority order.

9. The multi-function power regulator of claim 7 in which one or more of the control loop engines is configured to increase the loop gain of the control loop engine when all resources consumed by voltage harmonic mitigation do not exceed the one or more resource capacity limits to allow one or more of the resources consumed by voltage harmonic mitigation to increase based on the predetermined priority order.

10. The multi-function power regulator of claim 1 further including one or more control loop engines each having a loop filter with a loop gain adjuster configured to change the loop gain of the control loop engine in response to the priority control engine such that one or more of the resources consumed by voltage-ampere reactive (VAR) regulation is adjusted based on the predetermined priority order.

11. The multi-function power regulator of claim 10 in which one or more of the control loop engines is configured to reduce the loop gain of the control loop engine when the one or more resource capacity limits is exceeded such that one or more of the resources consumed by VAR regulation is reduced based on the predetermined priority order.

12. The multi-function power regulator of claim 10 in which one or more of the control loop engines is configured to increase the loop gain of the control loop engine when all resources consumed by VAR regulation do not exceed the one or more resource capacity limits to allow the one or more the resources consumed VAR regulation to increase based on the predetermined priority order.

13. The multi-function power regulator of claim 1 further including one or more control loop engines each associated with a predetermined current harmonic and each having a loop filter with a loop gain adjuster responsive to the priority control engine configured to change the loop gain of the control loop engine such that one or more of the resources consumed by current harmonics mitigation is adjusted based on the predetermined priority order.

14. The multi-function power regulator of claim 13 in which one or more of the control loop engines is configured to reduce the loop gain of the control loop engine when the one or more resource capacity limits is exceeded such that the one or more of the resources consumed by current harmonics mitigation is reduced based on the predetermined priority order.

15. The multi-function power regulator of claim 13 in which one or more of the control loop engines is configured to increase the loop gain of the control loop engine when all resources consumed by current harmonic mitigation do not exceed the one or more resource capacity limits to allow one of more of the resources consumed by current harmonics mitigation to increase based on the predetermined priority order.

16. The multi-function power regulator of claim 1 further including one or more control loop engines each having a reference adjuster responsive to the priority control engine configured to change a reference for the control loop engine such that the resources consumed by the shunt converter functions and/or the series converter functions is adjusted based on the predetermined priority order.

17. The multi-function power regulator of claim 16 in which the one or more of the control loop engines is configured to reduce difference between the reference and an input such that the resources consumed by the shunt converter functions and/or the series converter functions is reduced based on the predetermined priority order.

18. The multi-function power regulator of claim 16 in which the one or more of the control loop engines is configured to reduce difference between the reference and a reference set point when all resources consumed by the one or more shunt converter functions and/or one or more series converter functions do not exceed the one or more resource capacity limits to allow one or more of the resources consumed by the shunt converter functions and/or the series converter functions to increase based on the predetermined priority order.

19. The multi-function power regulator of claim 1 further including one or more control loop engines each associated with a predetermined voltage harmonic and each having a reference adjuster responsive to the priority control engine configured to change a reference for the control loop engine such that the resources consumed by the voltage harmonic mitigation is adjusted based on the predetermined priority order.

20. The multi-function power regulator of claim 19 in which the one or more of the control loop engines is configured to reduce difference between the reference and an input such that the resources consumed voltage harmonic mitigation is reduced based on the predetermined priority order.

21. The multi-function power regulator of claim 19 in which the one or more of the control loop engines is configured to reduce difference between the reference and a reference set point when all resources consumed by voltage harmonic mitigation do not exceed the one or more resource capacity limits to allow one or more of the resources consumed by voltage harmonic mitigation to increase based on the predetermined priority order.

22. The multi-function power regulator of claim 1 further including one or more control loop engines each having a reference adjuster responsive to the priority control engine configured to change a reference for the control loop engine such that the resources consumed by voltage-ampere reactive (VAR) regulation is adjusted based on the predetermined priority order.

23. The multi-function power regulator of claim 22 in which the one or more of the control loop engines is configured to reduce difference between the reference and an input such that the resources consumed by VAR regulation is reduced based on the predetermined priority order.

24. The multi-function power regulator of claim 22 in which the one or more of the control loop engines is configured to reduce difference between the reference and a reference set point when all resources consumed by VAR regulation do not exceed the one or more resource capacity limits to allow one or more of the resources consumed by VAR regulation to increase based on the predetermined priority order.

25. The multi-function power regulator of claim 1 further including one or more control loop engines each associated with a predetermined current harmonic and each having a reference adjuster responsive to the priority control engine configured to change a reference for the control loop engine such that the resources consumed by current harmonic mitigation is adjusted based on the predetermined priority order.

26. The multi-function power regulator of claim 25 in which the one or more of the control loop engines is configured to reduce difference between the reference and an input such that the resources consumed by current harmonic mitigation is reduced based on the predetermined priority order.

27. The multi-function power regulator of claim 25 in which the one or more of the control loop engines is configured to reduce difference between the reference and a reference set point when all resources consumed by current harmonic mitigation do not exceed the one or more resource capacity limits to allow one or more of the resources consumed current harmonic mitigation to increase based on the predetermined priority order.

28. The multi-function power regulator of claim 1 in which the one or more resources include RMS voltage, RMS current, peak current, and power.

29. The multi-function power regulator of claim 1 in which the priority control engine is configured to assign each of the shunt converter functions and the series converter function a priority.

30. A multi-function power regulator for prioritizing functions and allocating resources thereof, the multi-function regulator comprising:

at least shunt converter and a series converter each configured to consume one or more resources each having a resource capacity limit while performing one or more shunt converter functions and/or one or more series converter functions; and

a priority control engine configured to set a priority order for performing the shunt converter functions and/or the series converter functions and configured to determine whether one or more resource capacity limits has been exceeded or not exceeded by the shunt converter functions and/or the series converter function and in response to one or more exceeded resource capacity limits adjust the operation of the shunt converter functions and/or the series converter based on the priority order such that the one or more resource capacity limits exceeded is no longer exceeded.

31. A method for prioritizing and allocating resources of a multi-function power regulator, the method comprising:

monitoring and controlling one or more shunt converter functions and series converter functions each configured to consume one or more resources each having a resource capacity limit;

setting a priority order for performing the shunt converter functions and/or the series converter functions;

determining whether one or more of the resource capacity limits has been exceeded or not exceeded by the shunt converter functions and/or the series converter functions; and

in response to one or more exceeded resource capacity limits, adjust the operation of the shunt converter functions and/or the series converter functions based on the priority order such that the one or more resource capacity limits is no longer exceeded.

32. The method of claim 31 further including the step of providing one or more control loop engines each having a loop filter with a gain adjuster.

33. The method of claim 32 further including changing the loop gain of the control engine such that one or more resources consumed by the shunt converter functions and the series converter functions is adjusted based on the priority order.

34. The method of claim 33 further including reducing the loop gain of the control engine when one or more of the resource capacity limits is exceeded such that one or more of the resources consumed by the shunt converter functions and/or the series converter functions is reduced based on the priority order.

35. The method of claim 33 further including increasing the loop gain of the control engine when all resources consumed by the one or more shunt converter functions and/or the series converter functions do not exceed the one or more resource capacity limits to allow one or more of the resources consumed by the shunt converter functions and/or the series converter functions to increase based on the predetermined priority order.

36. The method of claim 31 further including providing one or more control loop engines each having a reference adjuster.

37. The method of claim 36 further including changing a reference for the control engine such that all resources consumed by the shunt converter functions and/or the series converter functions is adjusted based on the predetermined priority order.

38. The method of claim 37 further including reducing the difference between a reference and an input such that all resources consumed by the shunt converter functions and/or the series converter functions is reduced based on the predetermined priority order.

39. The method of claim 37 further including reducing the difference between the reference and a reference set point when all resources consumed by the one or more shunt converter functions and/or the one or more series converter functions do not exceed the one or more resource capacity limits to allow one or more resources consumed by the shunt converter functions and/or the series converter functions increase based on the predetermined priority order.