Fuzzy Technique for Analysis of Self Excited Induction Generator for Varying Capacitance Under Constant Speed and Load
نویسندگان
چکیده
In general, the conventional techniques like loop impedance and nodal admittance methods are used to find the parameters of SEIG for finding performance under various conditions. In these approaches, long mathematical calculations are involved. With the recent development, ANN and fuzzy logic are used for finding various parameters for different values of machine parameters. By finding these parameters in less time and for variable range of machine parameters the performance of SEIG can easily be analyzed. An approach employed for the evaluation of parameters of self excited induction generator (SEIG) using fuzzy logic, which needs a simple modelling, is proposed in this paper. Here a fully fuzzy based approach is used to evaluate the performance. The results from fuzzy logic approach are found to be accurate in comparison with analytical results. Keywords— Capacitance, Fuzzy Logic, Generated frequency, Magnetizing reactance, Self Excited Induction Generator. Nomenclature: Rr, Xr = Rotor resistance and reactance Rs , Xs = Stator resistance and reactance RL, XL = Load resistance and reactance Re = Core loss resistance Xm = Per phase Saturated magnetizing reactance Xmu = Unsaturated magnetizing reactance XC = Per phase capacitive reactance a = Generated frequency b = Ratio of actual rotor speed to synchronous speed corresponding to rated frequency Is = Stator current IL = Load current Ir = Rotor current Ic = Capacitive current E1 = Air gap voltage per phase Z = Impedance of complete circuit
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