Reliability evaluation of SEIG rotor core magnetization with minimum capacitive excitation for unregulated renewable energy applications in remote areas

This paper presents reliability evaluation of residual magnetism in rotor core of the induction motor operated as SEIG using probability distribution approach and Monte Carlo simulation for unregulated renewable energy applications in remote areas. Parallel capacitors with calculated minimum capacitive value across the terminals of the induction motor operated as SEIG with unregulated shaft speed are connected during the experimental study. A three phase, 4 poles, 50 Hz, 5.5 hp, 12.3 A, 230 V induction motor coupled with DC Shunt Motor is tested in the electrical machine laboratory with variable reactive loads. Using this experimental study, it is possible to choose a reliable induction machines operated as SEIG for unregulated renewable energy application. Failure density function, cumulative failure distribution function, survivor function, hazard model, probability of success and probability of failure for reliability evaluation of the three phase induction motor operating as a SEIG have been presented graphically in this paper.