Performance evaluation of dynamic voltage restorer using intelligent control algorithm

•Adaptive filter Volterra adaptive expanded filter is analyzed for the extraction of fundamental load voltage from non-sinusoidal voltage.•Fractional Order PID (FOPID) integrated with Kepler optimizer is employed for the voltage stabilization of DC and AC link voltage deviations under dynamic response.•The cost function involved are second and fourth are employed for selection of step size and thus the error is minimized using mixed order constraints.•The proposed control is evaluated by statistical tool like Integral Time Square Error (ITSE) which supports to achieve the improved dynamic response and lessen steady state error.•The systems performance is validated by measuring the power quality indicators like settle time (ts), overshoot (%Mp), and undershoot (Us) under a dynamical state.•Enhancement in the convergence rate and taking the benefits of mixed MSE/MFE as a cost function and minimizes the amplitude of the oscillations for restoring the correct load voltage.