Multiple Motors Driving a Single Compressor String
AssigneeKellogg Brown & Root LLC
InventorShawn Michael Walth
Life of this patent
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Abstract
Systems and methods of driving a compressor are provided. The compressor can be driven by multiple electric motors, which can be controlled by an adjustable speed drive (ASD) to increase efficiency. A torque controller may also be included.
Claims19
1) A compressor drive system comprising at least two electric motors, wherein the at least two electric motors are connected to at least one drive shaft, and wherein the drive shaft is connected to at least one compressor.
10) A method for operating refrigeration compressors for the liquefaction of natural gas comprising:
- providing two or more electric motors connected to a common drive shaft;
- providing one or more refrigeration compressors connected to the common drive shaft;
- providing an adjustable speed drive controller capable of distributing the electric load requirements of the one or more refrigeration compressors between the two or more electric motors;
- and
- supplying power to the one or more refrigeration compressors from the two or more electric motors through the common drive shaft to operate the compressors at a desired throughput level, wherein the adjustable speed drive controller distributes the electric load requirements of the one or more refrigeration compressors between the two or more electric motors to optimize electrical efficiency.
14) A process for the compression of a vapor stream comprising:
- providing at least two electric motors connected to at least one drive shaft, wherein the drive shaft is connected to at least one compressor;
- and
- compressing a first vapor stream in the at least one compressor to produce a second vapor stream having higher pressure than the first vapor stream.
Dependencies are inferred from the claim text.