A Novel MATLAB GUI Comparative Technique to Evaluate Generated Frequency and Saturated Magnetizing Reactance of A 3-φ SEIG

Steady state analysis of a 3-φ SEIG is generally done through mathematical modeling of its equivalent circuit. The impedance model can be reduced in terms of two nonlinear simultaneous equations consisting of unspecified variables as magnetizing reactance Xm and generated frequency F. The steady state performance analysis of SEIG becomes uncomplicated once the values of Xm and F are explicitly assessed. This paper presents a MATLAB Graphical User Interface (GUI) technique for determination of Xm and F using the Newton Raphson and Fsolve optimization technique. The software package consisting of active windows deals with comprehensive assessment in terms of modeling of SEIG. The designed algorithm and MATLAB program for Newton Raphson and Fsolve optimization technique have also been integrated in the GUI for comparative and better understanding. The simulation results obtained using the presented methodology provides the optimum values of Xm and F. The method evaluates the advantages of Fsolve optimization technique over the Newton Raphson technique. The GUI approach is found to be user friendly, application specific, facile and simpler. Keywords—Fsolve Technique, Generated frequency, Graphical User Interface (GUI), Magnetizing reactance, Newton Raphson technique, Self Excited Induction Generator (SEIG).