Research On Shaft Voltage And Electric Corrosion Bearing Of Turbogenerator

Electric corrosion bearing, caused by shaft voltage, should be paied more attention to, as large capacity turbogenerator and static excitation system are applicated. In this paper, characteristics and harms of electric corrosion caused by shaft voltage are introduced first. The resources of shaft voltage are specificly depicted after that. They are accumulation of static charge, flux asymmetry, axial direction flux and static excitation. In the last part of this paper, the eclectric corrosion problem of two turbogenerators are resolved appropriately through the analysis of simulation that had made before.