Design and Performance Evaluation of Two-Degree-Of-Freedom PID Control for a Modified Boost Converter

In light of the current energy crisis and the environmental damage that fossil fuels have wrought, the generation of electrical power from renewable sources like photovoltaics is emerging as a viable alternative to traditional approaches. Due to the photovoltaic system’s low and changeable output voltage, utilizing DC-DC converters with high voltage and great efficiency is recommended. As a result of these converters’ nonlinear features, the device becomes highly sensitive to modifications in the circuit since the output voltage varies frequently. Consequently, the nonlinear structure and rapid dynamics of these converters add to the complexity of their control process. In this paper, a two-degree-of-freedom proportional-integral- derivative (2-DOFPID) controller is utilized as an enhanced method for controlling an extended high step-up DC-DC converter. Moreover, employing the marine predators’ algorithm (MPA) allows the controller parameters to be implemented optimally. This system controls the voltage at the output according to variations in both the input and the load side. Finally, the efficacy of the suggested controller has been demonstrated via comparisons with the commonly used PID controller. According to the findings, the implementation of the suggested controller has the potential to reduce the system’s rise and settling time by up to $90 \%$.