Dynamic modeling and analysis of three phase self-excited induction generator using generalized state space approach

Dynamic characteristics assessment of three phase self excited induction generator is one of the main issue in isolated applications as it proves its importance in recent years. The transient characteristics of SEIG has important role to define its better applicability. In this paper a generalized state-space dynamic model of a three phase SEIG has been developed using d-q variables in stationary reference frame for transient analysis. The proposed model for induction generator, load and excitation using state space approach can handle variable prime mover speed, and various transient conditions e.g. load perturbation, switching states etc. Also the effect of variation of excitation capacitance on system is analyzed. SEIG behavior has been investigated considering the effect of main and cross flux saturation for various transient conditions. The equation developed has been simulated using powerful software MATLAB/SIMULINK, and its responses justifies the proposed model

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