Monitoring of exciter shaft torsional vibrations

Details Monitoring of exciter shaft torsional vibrations Monitoring of exciter shaft torsional vibrations

F - Mech Eng,Light,Heat,Weapons

01

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340/148.7

F01D 25/04 (2006.01) G01H 1/10 (2006.01) G01H 11/06 (2006.01) G05D 19/02 (2006.01) H02P 9/04 (2006.01)

Patent

CA 1295033

7 53,803 ABSTRACT OF THE DISCLOSURE Apparatus and method for detecting torsional vibrations of the shaft of an exciter of a turbine- generator, according to which a permanent magnet generator is connected to be driven by the exciter shaft and has an electrical output for providing an output voltage having a frequency proportional to the rate of rotation of the exciter shaft; and the electrical output is connected to signal processing circuitry serving to derive a signal representative of torsional vibrations experienced by the exciter shaft.

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