The analysis of a saturated self-excited asynchronous generator

The theory of saturated smooth-air-gap machines is applied to the analysis of the transient performance of a self-excited induction generator. Performance equations for this machine are given which utilize the saturated magnetizing inductance L_m=|ψ_m|/|i_m| and its derivative dL_m/d|i_m|, where ψ _m and i_m are vectors. The self-excitation process, the switching in of a purely resistive load and of a load with resistors in series with capacitors are studied. Measured results are compared with those computed from the performance equations, and the two are shown to be in good agreement