Implementation of power factor corrector with fractional capacitor

Based on the fact that both the phase and amplitude characteristics of fractional capacitor are related to its order, the introduction of fractional capacitor will make power factor correction (PFC) more flexible compared with the one using conventional capacitor. In order to verify the PFC function with fractional capacitor, an equivalent fractional capacitor model composed of an inverter and a resistor in series is presented in this paper. As the inverter is served as a controlled voltage source, the order of the proposed fractional capacitor can be varied between 0 and 2 easily just by changing the control parameters of the inverter, and the power level of the fractional capacitor model is the same as that of the inverter, which is able to be used in high power occasion. Finally, the simulation and experimental results are provided to validate the feasibility of power factor corrector with the proposed fractional capacitor model.

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