Bifurcation and chaos in current mode controlled DC drives in continuous and discontinuous conduction mode of operation

This paper simulates a current mode controlled separately excited dc motor in continuous conduction mode as well as in discontinuous conduction mode. The bifurcation phenomena have been explored with input voltage and speed error amplifier gain as bifurcation parameter. The study is helpful in selecting the range and combination of parameters if the mode of operation of the motor needs to be restricted in a particular operating mode. The study has been conducted with three different sets of motor data.