DefinePK

Abstract

The purpose of this paper is to develop a method for determining the moment of inertia of rotating masses of an electric motor and evaluation of its mechanical losses, as well as its theoretical and experimental study. The idea of the method is based on the known method of the retardation test of an electric motor with different values of the moment of inertia of its rotating masses. However, unlike existing methods, the proposed one gives more accurate results due to the use of additional bodies of different moments of inertia but of the same weight. This creates approximately the same conditions of friction in bearings during the entire measurement process. Experimental results were obtained on the basis of an induction motor and showed a higher accuracy compared with existing methods. The developed method can be used in companies producing electric motors to improve the accuracy of determining the moment of inertia of their rotating masses and to evaluate their mechanical efficiency with fewer financial expenses than using existing experimental methods.