Ampere-turn gain of ordinary saturable reactors

THE ampere-turn gain is a fundamental quantity of ordinary saturable reactors. In the case of an ideal core material with a step-shape B-H characteristic (rectangular B-H line), the relation between load-winding ampere-turns ILNL and control-winding ampere-turns ICNC becomes a straight line, which for identical scales of ampere-turns subtends an angle of 45 degrees with the axes. Thus, in the idealized case, the ampere-turn gain represented by the slope of the control characteristic, ILNL = f(ICMC), is KAT = (ILNL)/(ICNC) = 1.