Nonlinear controller design for IPC using feedback linearization method

This paper establishes a mathematical model in the d–q frame for the conventional interphase power controller (IPC) in series with a transmission line connecting two power systems. The IPC model is nonlinear. Based on this model and the theory of feedback linearization, a MIMO nonlinear controller is proposed. This controller can independently adjust active and reactive powers of the transmission line and maintain the voltage of the capacitor and the current of the inductor in the branches of IPC at the prescribed values. The simulation results, carried out by Matlab/Simulink® software, show the effectiveness of the proposed controller.

► A mathematical model in the d–q frame for the IPC has been presented.
► Feedback linearization method was used for nonlinear control of IPC.
► The output vector is including active and reactive powers of the transmission line.
► According to the results, the outputs follow their set points, perfectly.