Implementation of PD-PI Controller for Boost Converter Using GWO Algorithm

In the field of conversion devices, the conventional boost converter has a wide variety of applications because of its broad changeable output voltage. Due to the nonlinearity circuit of this converter, it will express several nonlinear features when the circuit parameters are changed, achieving an unsteady output voltage and making the device sensitive to minor disturbances. This paper utilizes the Grey wolf optimization (GWO) algorithm to configure an optimum PD-PI controller employed in a boost converter. GWO performs better and consumes less processing time compared to PSO and GA. This mechanism controls the output voltage in response to changes in the input voltage and the load current. The proposed controller coefficients intend to achieve the lowest possible value for various time-domain performance indices, with a particular focus on the ISTAE index as the objective function; while utilized controllers' performance is measured using IAE and ITAE as evaluation functions. A comparison of the simulated results under various scenarios explains that the GWO based PD-PI controller works better than the PID controller in settling time and overshoot reduction.