VFD Induced Coupling Failure
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A catastrophic failure of a high performance disc coupling connecting the speed increaser and LP compressor in a VFD controlled 18,300 HP motor/speed increaser/LP compressor/HP compressor train, led to months of reduced plant operation while the root cause of the failure, and corrective action, both outlined in this Case Study, were determined.
Corcoran, Joseph P.; Kocur, John A. (2008). VFD Induced Coupling Failure. Texas A&M University. Turbomachinery Laboratories. Available electronically from