Transient performance of unregulated prime mover driven stand alone self-excited induction generator with solid-state lead-lag VAr compensator

In this paper, the transient behaviour of the integrated system of stand-alone SEIG and inductively loaded current controlled solid-state (ICSL) VAr compensator has been carried out when the system is subjected to different dynamic conditions. The SEIG is considered to be driven by an unregulated micro-hydro turbine in constant water head. An analytical transient model for the system has been developed. Waveforms of the voltage build up due to self excitation of the generator at specific switching delay angle of the compensator, output terminal voltage, currents etc. due to perturbations in load and switching delay angle of the compensator and the overload condition of the generator have been analysed to bring out the special features of the integrated system under transient condition