Finally, some simulation and experimental results are discussed. Operation principle, design analysis, small‐signal models and conditions achieving zero switching loss for the proposed converter are described. The duty cycle for the inverting topology is the same as that of the Cuk converter, namely Duty Cycle (D) V OUT /(V OUT V IN ) Similarly, given the same output voltage, input voltage and switching frequency, the circuits have the same duty cycle and the same inductor current slope (namely the ripple current, which equals V IN t ON /L). Its main waveforms are reported in figure 2 and are drawn in the hypothesis of negligible ripples on inductor currents and output capacitor voltage. Merits of the proposed converter include unity power factor, less harmonic control content, zero switching loss, simpler control stage, higher power density and unidirectional power flow. BASIC CONVERTER OPERATION Let us consider the dc-dc Cuk converter operating in DCVM shown in figure 1.
Development of power‐factor correction circuit using zero‐current switching cuk converter Development of power‐factor correction circuit using zero‐current switching cuk converterĪ new Cuk resonant high power‐factor single‐phase AC‐to‐DC converter for the power‐factor correction is proposed in this paper, which employs zero‐current switching (ZCS) technique.