Improved Disturbance Rejection using TDF-IMC for DC-DC Boost Converters

This paper considers a two-degree-of-freedom (TDF) internal model control (IMC) controller design and its implementation on a DC-DC boost converter. The design of the set-point controller and the disturbance rejection controller is optimal as well as robust. The proposed TDF-IMC controller is compared with PID, basic one-degree-of-freedom IMC (ODF-IMC) and the existing TDF-IMC controller. A simulation study is carried out to show that the proposed controller rejects disturbances better than existing PID, ODF-IMC, and TDF-IMC.