THERMAL ANALYSIS OF AIR COOLED SYNCHRONOUS GENERATOR

Abstract

This paper describes a study of the steady state and transient temperature rise of Siemens air cooled synchronous generator, which is driven by gas turbine, whose rated power 313 MVA at 3000 rpm. The modeling technique is the finite-element method. The temperature rise is mainly due to power losses, which are used as input data of thermal analysis to predict the temperature distributions. All considerable parameters that influence synchronous generator operation have been involved. The numerical solutions, which are obtained from thermal model, are compared with actual measurements that obtained from kureimat station in Egypt, and with Siemens test report.