Method and apparatus for sizing a power processing device serving multiple drive units

• US 7,113,887 B2
• Filed: 09/30/2004
• Issued: 09/26/2006
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Rockwell Automation Technologies Incorporated (Rockwell Automation, Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Rockwell Automation, Inc.)
• Inventors: Martin, Timothy J.
• Primary Examiner(s): Vacheman, Hal
• Assistant Examiner(s): O MALLEY, MARY CATHERINE
• Application Number:
  US10/955,815
• Publication Number:
  US 20060074573A1
• Time in Patent Office: 726 Days
• Field of Search: 702/34, 702/54, 702/56, 702181-183, 318/59, 318/68, 318/77, 318/85, 318/163, 318433-434, 318/806
• US Class Current: 702/182
• CPC Class Codes: H02P 5/60 controlling combinations of dc and ac dynamo-electric motors H02P5/46 takes precedence

Abstract

A method for determining supply requirements for a motor control system includes determining a performance profile for each of a plurality of drive units. A power supply parameter for each drive unit is generated based on the performance profiles. The power supply parameters for the drive units are combined to generate a rating parameter for the motor control system. In some embodiments, instructions for implementing the method may be encoded on a program storage device or programmed into a processing device for execution.

Claims

1. A method for determining supply requirements for a motor control system, comprising:

determining a performance profile for each of a plurality of drive units included in the motor control system, from at least one operational current parameter of each of the plurality of drive units under a given application;

generating a power supply parameter for each drive unit based on the performance profiles;

combining the power supply parameters for the each of the plurality of drive units to generate a -rating parameter for the motor control system; and

based on the rating parameter, identifying components of the motor control system that are necessary during the given application.

2. The method of claim 1, wherein generating the rating parameter further comprises determining a combined current parameter for the motor control system using the operational current parameter of each of the plurality of drive units under the given application.

3. The method of claim 1, further comprising determining the operational current parameter for each of the plurality of drive units using at least one of a continuous current parameter and a peak current parameter associated with each of the plurality of drive units under the given application.

4. The method of claim 1, wherein determining the performance profile comprises determining a power profile for each of the drive units and further comprising identifying components of the motor control system that are unnecessary during the given application based on the rating parameter.

5. The method of claim 4, wherein generating the power supply parameter further comprises determining a current parameter based on the power profile.

6. The method of claim 1, further comprising:

receiving synchronization data relating at least two of the drive units; and

combining the power supply parameters based on the synchronization data to generate the rating parameter.

7. The method of claim 1, further comprising:

comparing the generated rating parameter to a rating parameter of a power processing device; and

determining the suitability of the power processing device for providing power to the motor control system responsive to the generated rating parameter being less than the rating parameter of the power processing device.

8. The method of claim 1, further comprising:

comparing the generated rating parameter to rating parameters associated with a plurality of power processing devices; and

selecting at least one of the power processing devices as being suitable for providing power to the motor control system based on the comparison.

9. The method of claim 1, further comprising:

comparing the generated rating parameter to rating parameters associated with a plurality of power processing devices;

dividing the plurality of drive units into at least two sets; and

selecting at least one of the power processing devices for each of the sets based on the comparison.

10. A program storage device encoded with instruction that, when executed by a processing device, perform a method for determining supply requirements for a motor control system, the method comprising:

determining a performance profile for each of a plurality of drive units included in the motor control system, from at least one operational current parameter of each of the plurality of drive units under a given application;

generating a power supply parameter for each drive unit based on the performance profiles; and

combining the power supply parameters for the plurality of drive units to generate a rating parameter for the motor control system;

identifying unnecessary components of the motor control system that are at least one of underutilized and unutilized during the given application from the rating parameter; and

at least one of reducing power supplied to the unnecessary components and removing the unnecessary components from motor control system.

11. The program storage device of claim 10, wherein generating the rating parameter in the method further comprises determining a combined current parameter for the motor control system using the operational current parameter of each of the plurality of drive units under the given application.

12. The program storage device of claim 10, further comprising determining the operational current parameter for each of the plurality of drive units using at least one of a continuous current parameter and a peak current parameter associated with each of the plurality of drive units under the given application.

13. The program storage device of claim 10, wherein determining the performance profile in the method comprises determining a power profile for each of the drive units.

14. The program storage device of claim 13, wherein generating the power supply parameter in the method further comprises determining a current parameter based on the power profile.

15. The program storage device of claim 10, wherein the method further comprises:

receiving synchronization data relating at least two of the drive units; and

combining the power supply parameters based on the synchronization data to generate the rating parameter.

16. The program storage device of claim 10, wherein the method further comprises:

comparing the generated rating parameter to a rating parameter of a power processing device; and

determining the suitability of the power processing device for providing power to the motor control system responsive to the generated rating parameter being less than the rating parameter of the power processing device.

17. The program storage device of claim 10, wherein the method further comprises:

comparing the generated rating parameter to rating parameters associated with a plurality of power processing devices; and

selecting at least one of the power processing devices as being suitable for providing power to the motor control system based on the comparison.

18. The program storage device of claim 10, wherein the method further comprises:

comparing the generated rating parameter to rating parameters associated with a plurality of power processing devices;

dividing the plurality of drive units into at least two sets; and

selecting at least one of the power processing devices for each of the sets based on the comparison.

19. A sizing tool for determining supply requirements for a motor control system, comprising:

a processing device programmed with instructions, that when executed, perform a method, comprising;

determining a performance profile for each of a plurality of drive units included in the motor control system, from at least one operational current parameter of each of the plurality of drive units under a given application;

generating a power supply parameter for each of the plurality of drive units based on the performance profiles;

combining the power supply parameters for the plurality of drive units to generate a rating parameter for the motor control system; and

identifying, from the rating parameter, components of the motor control system that are necessary during the given application.

20. A sizing tool for determining supply requirements for a motor control system, comprising:

means for determining a performance profile for each of a plurality of drive units included in the motor control system from at least one operational current parameter of each of a plurality of drive units in the motor control system under a given application;

means for generating a power supply parameter for each of the plurality of drive unit based on the performance profiles;

means for combining the power supply parameters for the plurality of drive units to generate a rating parameter for the motor control system; and

means for identifying components of the motor control system that are necessary to operate according to the given application based on the rating parameter.