Single Phasing of Three-phase Induction Motors under Various Load Conditions

Three-phase induction motors are widely used as industrial electric drive systems. Although highly robust, flexible and easily maintainable, these motors quite often suffer from sudden loss of one of its phases, i.e. so-called single phasing. This regime usually leads to overheating of the windings and, if prolonged, motor burnout and other mechanical problems. In this paper, the causes and effects of single phasing of a three-phase induction motor are simulated and investigated using Matlab/SIMULINK models. The obtained simulation results are discussed and potential solutions are presented