Granted Patent B2

US 8,150,540 · App. 12/212,626 · Granted Apr 3, 2012

Abstract

Claims (42)

1. A converter controller embodied in a computer-readable non-transitory storage medium, comprising:

a converter efficiency database configured to store data pertaining to efficiencies of converters, wherein said converters have disparate efficiencies;

a power requirement assessor configured to compare ratings of online ones of said converters to an output power requirement of a given output power bus; and

a controller mode selector coupled to said power requirement assessor and configured to retrieve online and standby converter efficiencies from said converter efficiency database, assess efficiencies of alternative converter combinations appropriate for said output power requirement and place one of said alternative converter combinations online based on both ratings and said efficiencies of said alternative converter combinations.

2. The controller as recited in claim 1 further comprising a converter efficiency analyzer coupled to said converter efficiency database and configured to analyze said converters to determine said efficiencies and provide said data to said converter efficiency database.

3. The controller as recited in claim 2 wherein said converter efficiency analyzer is configured to bring a particular converter online, command said particular converter to produce at least one output current level, detect a marginal change in input power, place said particular converter back on standby and determine an efficiency of said particular converter based on said output current level and said marginal change.

4. The controller as recited in claim 3 wherein said converter efficiency analyzer is configured to detect said marginal change by detecting a selected one of:

a marginal change in overall input power to said converters, and

a marginal change in input power to said particular converter.

5. The controller as recited in claim 1 wherein said power requirement assessor is configured to determine whether said ratings of said online converters are inadequate, appropriate or excessive with respect to said output power requirement.

6. The controller as recited in claim 1 wherein said power requirement assessor is further configured to gather data regarding ratings of online ones of said converters.

7. The controller as recited in claim 1 wherein said converters are rectifiers.

8. A method of controlling converters, comprising:

comparing ratings of online ones of said converters to an output power requirement of a given output power bus, wherein said converters have disparate efficiencies;

retrieving online and standby converter efficiencies;

assessing efficiencies of alternative converter combinations appropriate for said output power requirement; and

placing one of said alternative converter combinations online based on both ratings and said efficiencies of said alternative converter combinations.

9. The method as recited in claim 8 further comprising analyzing said converters to determine said efficiencies.

10. The method as recited in claim 9 wherein said analyzing comprises:

bringing a particular converter online;

commanding said particular converter to produce at least one output current level;

detecting a marginal change in input power;

placing said particular converter back on standby; and

determining an efficiency of said particular converter based on said output current level and said marginal change.

11. The method as recited in claim 10 wherein said detecting comprises detecting a selected one of:

a marginal change in overall input power to said converters, and

a marginal change in input power to said particular converter.

12. The method as recited in claim 8 wherein said comparing comprises determining whether said ratings of said online converters are inadequate, appropriate or excessive with respect to said output power requirement.

13. The method as recited in claim 8 further comprising gathering data regarding ratings of online ones of said converters.

14. The method as recited in claim 8 wherein said converters are rectifiers.

15. A controller embodied in a computer-readable non-transitory storage medium for controlling converters of disparate type, comprising:

a converter efficiency database configured to store data pertaining to efficiencies of said converters, wherein said converters have disparate efficiencies;

a power requirement assessor configured to gather data regarding ratings of said converters and compare ratings of said online ones of said converters to an output power requirement of a given output power bus;

a controller mode selector coupled to said power requirement assessor and configured to retrieve online and standby converter efficiencies from said converter efficiency database, assess efficiencies of alternative converter combinations appropriate for said output power requirement and place one of said alternative converter combinations online based on both ratings and said efficiencies of said alternative converter combinations; and

a converter efficiency analyzer coupled to said converter efficiency database and configured to analyze said converters to determine said efficiencies and provide said data to said converter efficiency database.

16. The controller as recited in claim 15 wherein said converter efficiency analyzer is configured to bring a particular converter online, command said particular converter to produce at least one output current level, detect a marginal change in input power, place said particular converter back on standby and determine an efficiency of said particular converter based on said output current level and said marginal change.

17. The controller as recited in claim 16 wherein said converter efficiency analyzer is configured to detect said marginal change by detecting a selected one of:

a marginal change in overall input power to said converters, and

a marginal change in input power to said particular converter.

18. The controller as recited in claim 15 wherein said power requirement assessor is configured to determine whether said ratings of said online converters are inadequate, appropriate or excessive with respect to said output power requirement.

19. The controller as recited in claim 15 wherein said converters are rectifiers.

20. The controller as recited in claim 15 wherein said power requirement assessor and said controller mode selector are embodied in at least one sequence of computer instructions.

Assignments (9)