Title :
Predicting shaft torque amplification
fDate :
2/1/1995 12:00:00 AM
Abstract :
Shaft torque amplification (STA) is the form of subsynchronous resonance (SSR) characterized by the higher system-model complexity and computational requirements its simulation, normally in a time-domain environment, demands. A multi-modal approach drawing the turbogenerator torsional response to electrical torque impulses applied to the machine air-gap is introduced in this article as an alternative STA analysis frame. Peak torque results from the proposed algorithm are compared with similar ones obtained from EMTP runs. Loss-of-life calculations and a capacitor-reinsertion application as STA control means, are included
Keywords :
air gaps; electric machine analysis computing; machine theory; power system analysis computing; power system stability; simulation; subsynchronous resonance; time-domain analysis; torque; torsion; turbogenerators; EMTP runs; capacitor-reinsertion application; electrical torque impulses; higher system-model complexity; loss-of-life calculations; machine air-gap; multi-modal approach; peak torque; power system dynamics; shaft life expenditure; shaft torque amplification prediction; subsynchronous resonance; time-domain simulation; torsional fatigue; transient torques; turbogenerator torsional response; Air gaps; Engineering drawings; Fatigue; Power industry; Resonant frequency; Shafts; Stress; Time domain analysis; Torque; Turbogenerators;
Journal_Title :
Power Systems, IEEE Transactions on
