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This paper proposes the application of fractional-order PID (FOPID)controller for output voltage control of boost converters. For this purpose,parameters of the FOPID controller are calculated such that the IntegralAbsolute Error (IAE) of the variations of the output voltage is minimized.Since the search space is very large in dealing with such an optimizationproblem, the Artificial Bee Colony (ABC) algorithm is used for optimal tuningthe parameters of the FOPID controller. Simulations, which are performed byusing the complete non-minimum phase model of the boost converter, confirm thefact that the proposed optimal FOPID controller can improve the transientresponse of the feedback system by using a considerably smaller control effort(i.e., less on-off switches) compared to the optimal PID controller. Moreover,it is shown that the proposed FOPID controller enhances the robustness of theboost converter to variations in the input voltage.

Comparing the Performance of Optimal PID and Optimal Fractional-Order PID Controllers Applied to the Nonlinear Boost Converter