In single-stage single-phase power factor correction converters, the time of dynamic response and input current THD are in conflict with each other. The main purpose of this paper is to improve the dynamic response of the converter along with reducing its input current More
In single-stage single-phase power factor correction converters, the time of dynamic response and input current THD are in conflict with each other. The main purpose of this paper is to improve the dynamic response of the converter along with reducing its input current THD. To achieve these goals, two multi-objective optimization methods based on evolutionary algorithms including; SPEA and NSGA-II were used to design a PI compensator coefficients in the indirect current control technique for PFC rectifier. The integral and fractional-order PI compensators were designed, respectively. The obtained results showed the superiority of the fractional-order PI compensator. To investigate the optimization problem, the dynamic response to changes in load and reference voltage was considered. The comparison between the optimization algorithms showed that each algorithm may have better performance than the other one according to the used objective functions. It means that neither had an absolute superiority.
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