Two optimum power transfer models of self-excited induction generators (SEIGs) have been studied with a view to validating previous findings. The first model employed a capacitor bank-load approach to optimising by sizing of shunt and shunt-series compensation capacitors for SEIG variable speed wind turbines, and the use of 50uF shunt + 45uF series capacitors in this first model was validated and supported. The second model employed an extrapolated magnetizing characteristic resulting in three curves, in which the generated voltage provides a high degree of voltage stability without changing the excitation capacitor or exceeding the generator rating. Errors were found in...