This paper presents a new simple approach for controlling the terminal voltage of capacitor
self-excited induction generators. The method is based on switching ON or OFF certain extra
capacitor banks that are connected with each phase of the induction generator. Only one leg
consists of an IGBT and diode-bridge is required as a switch for each phase for three-phase
self-excited induction generator. The advantages of this method are simple, powerful,
effective and less expansive. Transient and steady state performances of induction generator
terminal voltage are presented under different operating conditions. Simulation results for
both open and closed loop system are presented in comparison with similar experimental
results. A good agreement between simulation and experimental results were found.