Computer formulation of state space equations for systems containing electrically separate but magnetically coupled circuits

Presents a new approach for formulating the state space equations associated with electrical systems containing circuits which are coupled only magnetically. Presents an algorithm which automatically determines the state space matrix of a system which can take any topological form. Describes a new way of representing semiconductor devices which gives increased flexibility in system representation, and reduces computation time, together with a technique for satisfactorily accounting for the discontinuous behaviour of semiconductor devices. Illustrates the application of the proposed technique by means of a relatively simple example for which an analytical solution is possible. Compares illustrative test results obtained from more complex circuits with those from simulation to demonstrate further the validity of the method.