HIGH FREQUENCY ELECTRIC-DRIVE WITH MULTI-POLE MOTOR FOR GAS PIPELINE AND STORAGE COMPRESSION APPLICATIONS

• US 20090196764A1
• Filed: 02/04/2008
• Published: 08/06/2009
• Est. Priority Date: 02/04/2008
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Weeber, Konrad R., Wang, Yu, Datta, Rajib, Fogarty, James M., Kaminski, Christopher A.
• Application Number:
  US12/025,227
• Publication Number:
  US 20090196764A1
• Time in Patent Office: Days
• US Class Current: 417/44.1
• CPC Class Codes: F04D 25/0606 the electric motor being specially adapted for integration in the pump
• CPC Class Codes: F04D 25/0686 specially adapted for submerged use
• CPC Class Codes: H02M 7/487 Neutral point clamped inverters
• CPC Class Codes: H02P 27/14 with three or more levels of voltage

Abstract

An integrated electric-drive compressor system utilizes a high frequency drive for powering the multi-pole pair motor. The electric motor and compressor are housed in a common pressure casing. The electric motor has added permanent magnets for achieving higher ratings and higher speeds.

Claims

1. An integrated electric drive compressor system, said system comprising:

a high frequency power converter for powering at least one multi-pole motor;

at least one multi-pole motor powered by said high frequency power converter; and

at least one single-stage or multi-stage centrifugal compressor driven by said at least one multi-pole motor.

2. The system as claimed in claim 1, wherein said high frequency power converter includes a hybrid bridge, comprising two levels, for powering said at least one multi-pole motor.

3. The system as claimed in claim 1, wherein said high frequency power converter includes a bridge, comprising three levels, for powering said at least one multi-pole motor.

4. The system as claimed in claim 1, wherein said high frequency converter comprises a dual voltage converter having capability to operate in two different modes of operation.

5. The system as claimed in claim 1, wherein said high frequency converter, said motor and said compressor are integrated into a common enclosure.

6. The system as claimed in claim 1, further including integrated compressor and high frequency power converter controls and integrated active magnetic bearing controls.

7. The system as claimed in claim 1, wherein said high frequency power converter includes a control strategy to isolate the converter and to protect it from system faults.

8. The system as claimed in claim 1, wherein said high frequency power converter includes a remote monitoring capability to facilitate troubleshooting and maintenance, and performance.

9. The system as claimed in claim 1, wherein the at least one multi-pole motor has added permanent magnets to partially or completely eliminate active components.

10. The system as claimed in claim 1, wherein the at least one multi-pole motor operates at high speeds thereby eliminating the need for a gear box.

11. A method for powering an integrated electric drive compressor system, comprising:

powering at least one multi-pole motor with the output of a high frequency power converter; and

driving at least one single-stage or multi-stage centrifugal compressor with the output of said at least one multi-pole motor.

12. The method as claimed in claim 11, wherein said high frequency power converter includes a hybrid bridge, comprising two levels, for powering said at least one multi-pole motor.

13. The method as claimed in claim 11, wherein said high frequency power converter includes a bridge, comprising three levels, for powering said at least one multi-pole motor.

14. The method as claimed in claim 11, wherein said high frequency converter comprises a dual voltage converter having capability to operate in two different modes of operation.

15. The method as claimed in claim 11, further comprising integrating said high frequency converter, said motor and said compressor into a common enclosure.

16. The method as claimed in claim 11, further including integrating the controls of said compressor and high frequency power converter and integrating the controls of active magnetic bearings.

17. The method as claimed in claim 11, wherein said high frequency power converter includes a control strategy to isolate the converter and to protect it from system faults.

18. The method as claimed in claim 11, wherein said high frequency power converter includes a remote monitoring capability to facilitate troubleshooting and maintenance, and performance.

19. The method as claimed in claim 11, further comprising adding to the at least one multi-pole motor permanent magnets to partially or completely eliminate active components.

20. The method as claimed in claim 11, wherein the at least one multi-pole motor operates at high speeds thereby eliminating the need for a gear box.