Bifurcation route to chaos for a ferroresonant circuit using an electromagnetic transients program

The ferroresonant behaviour of a nonlinear power system circuit is examined using the diagnostic tools of deterministic chaos. An electromagnetic-transients simulation program is used to retain the component nature of the system and allow metering as for a real system. The information from state space trajectories, Poincare maps and bifurcation diagrams is compared to that normally available from time and frequency domain analyses. They reveal the global behaviour of the system and the particular points of behavioural change.