Digital Computation of Nonlinear Differential Equations for SCR Circuits With the Help of Fictitious Inductances in the Equivalent Circuits of SCR´s

In this paper a new equivalent circuit for SCR´s is proposed. This new equivalent circuit which contains a fictitious inductance is much more accurate and more suitable for digital computations of SCR circuits. A mathematical model which is derived from the equivalent circuit is used to compute the behavior of the SCR circuit. This circuit contains, in addition to SCR´s a nonlinear universal series motor. The state equations of this nonlinear circuit have been derived and solved by the digital computer. The paper contains a flow chart of the algorithm and the computed results are presented.