Shtogrin O. Scientific-Technical Measures Used to Reduce Damage in the Powerful Turbogenerator Stators Caused by Vibrations in the End Zones

The Dissertation is devoted to scientific substantiation and development of scientific-technical measures, which can be used to reduce damage in construction elements of the turbogenerator (TG) stator caused by the vibrations in its end zones. Destructive processes in the turbogenerator stator core - stator core coupling prisms, stator end packet teeth - using the techniques of strength of materials to deformation and destruction as well as field methods in the calculation of electromagnetic axial forces are studied. Vibroactivity of the stator coil coupling buses is experimentally investigated using the technique of vibrodiagnostics. A number of practical constructive recommendations concerning the reduction of consequences of damage in stator construction elements and enlargement of the TG stator working endurance are formulated. It is proposed to use the vibrodiagnostics as an effective technique for the detection of initial stages of defect formation in the TG construction elements.