Series-Connected Saturable Reactor with Control Source of Comparatively High Impedance

The object of this analysis is to form a clear picture of the function of the saturable reactor with resistive load, and to derive simple, and yet reasonably accurate equations. Four modes of operation are analyzed for normal and underexcitation and one mode of operation for overexcitation. The results of the mathematical derivations are condensed into graphs in normalized form. With the aid of these graphs the effect of any circuit parameter can be readily understood. A numerical example is included to demonstrate the usefulness of the normalized graphs for the quick calculation of the saturable reactor.