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The self excited induction generators have been receiving attention for last decades as the most suitable power solution for remote areas. These have voltage and frequency regulation problems that stand against their spreading. This paper presents two simple voltage and frequency regulation methods for such stand-alone induction generators. The first and desired method, based on stepped capacitor uses programmable logic controllers (plc) in order to maintain constant values of the terminal voltage at different loads while frequency under different loads is regulated by regulating the prime mover speed by the same plc. The second method was developed by using an external resistance in series with the terminal capacitor while frequency under different loads is regulated by regulating the prim-mover speed .both methods were experimentally verified using a 1.5 kw squirrel cage induction generator supplying resistive loads. A computer simulation model depending on the generator steady state performance was developed. The experimental data show good agreement with computed results

LABORATORY VOLTAGE AND FREQUENCY CONTROL FOR SEL EXCITED INDUCTION GENERATOR USING PROGRAMMABLE L CONTROLLERS