Optimal controllers for divided winding rotor synchronous machine

The state-space model for the divided winding rotor (d.w.r.) synchronous machine is derived in a form most suitable for the application of optimal control theory. An optimal controller for the machine is designed to improve the dynamic respose of the power system. The superiority in the performance of the system with the optimal state controller as compared with that of a conventional voltage and angle regulator is conclusively established.