Abstract
In this paper, experimental results on the self excitation of induction generators have been investigated to obtain a secure and stable power generation. A micro power simulator which consists of a small-scale synchronous generator (0.5 kW) and a squirrel cage induction generator (0.4 kW) controlled by a servomotor and an equivalent LC network of the transmission line is successfully used to observe the self-excitation phenomena in the induction generators. The minimum rotor speed for the stable self-excitation has been measured for various load resistance. The slip characteristics corresponding to the loaded operation of the self-excitation can be associated with the saddle-node bifurcation of the nonlinear system dynamics for the induction generators. a close agreement is obtained between theoretical results and experimental results.
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