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This paper proposes an analytic model to calculate the double fundamental frequency (2ω) voltage and current ripples for single-phase quasi-Z-source inverter (qZSI). The model enables the exact calculation of the 2 Ω components of the inductor current and the capacitor voltage, which is crucial for designing a single-phase qZSI system. A guideline for selecting the capacitance and inductance in quasi-Z-source...
The small signal model of an interleaved active clamp forward converter with parallel input and series-parallel output is presented in this paper. With interleaved control schemes for two phases in the proposed combined converter, the second side windings of the transformers can work in series when the input voltage is low while in parallel when input voltage is high. In order to predict the system...
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