Optimal control of nonlinear dynamics in Buck converters using spotted hyena optimizer: a computational and experimental study

Power electronics circuits are well-known for their nonlinear dynamics, which arise from cyclic switching between the circuit topologies. The aim of this work is the exploration and shifting of the nonlinear phenomena exhibited by Buck converters, this converter is selected to be voltage mode controlled (VMC) and functioning in continues conduction mode (CCM) through a mathematical model developed and tested in MATLAB. Through systematic changes in the converter's variables, it is shown that the switching converter may exhibit abnormal phenomenon and undesirable comportment witch bifurcation, quasi-periodic, and chaotic oscillations. The proposed method Spotted Hyena Optimizer (SHO) is used to control the chaotic characteristics of a buck converter by obtaining optimal parameters for the PID controller. This is done by reducing the difference between the desired value of the output voltage and the measured values. To validate the proposed solution, a dSPACE-controlled Buck converter prototype is constructed and subjected to experimental studies. The proposed method will be validated through the results of both the computational and experimental.