Analysis of cylindricity of thermal tested alternator stators

Abstract

This paper investigates the internal shape correctness of alternator stators which is caused by high and low temperature storage test. This kind of failure can affect the adequate operation of alternators since vibrations can occur during rotation of the other part of the alternator, the rotor. It can be stated that the effects of this error reduce the efficiency of the alternator. The aim of this study is to examine the influence of different testing parameters, such as the temperature and the running time of the test and that the stator is equipped with damping element or not. To planning and executing the experiments we use full factorial experimental design method. The measurement of the cylindricity of the specimens was done with a circular and position error measuring machine type Taylor Hobson Talyrond 365. From the measured data, special improvement ratios can be calculated in order to define the appropriate range of testing parameters which results greater deformity.