Reliability evaluation of residual magnetism in rotor of SEIG

Evaluation of the probability of success and probability of failure have been presented in this paper by using Monte Carlo simulation due to loss of residual magnetism in the rotor core of the three phase induction machine operating as a Self Excited Induction Generator (SEIG). Based on this experimental study, it is possible to choose a reliable induction machines operated as a SEIG for unregulated renewable energy application. A three phase delta connected, 4 poles, 50Hz, 5.5 hp, 12.3A, 230V induction motor coupled with 230V, 11.6A DC Shunt Motor was tested in the electrical machine laboratory with variable reactive loads. Failure density function, cumulative failure distribution function, survivor function, hazard model for reliability evaluation of the three phase induction motor operating as a SEIG have been presented graphically in this paper by using probability distribution approach.