A field mathematical model for a turbine-generator operating under no-load conditions

摘要

A field mathematical model for calculating a quasi-stationary electromagnetic field on a pole pitch of a turbine-generator for a specified excitation voltage is considered. The model is constructed using the differential equations for the vector potential of a quasi-stationary electromagnetic field, which are written with respect to moving medium. The electromagnetic field is calculated in all areas of the transverse cross-section of the turbine-generator. The differential equations are spatially discretized using a finite-element method, and they are integrated using implicit Euler's method. Results of computer simulations of a transient lasting up to the onset of steady-state operating conditions are presented.