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A high step‐up DC–DC converter with active switched LC‐network and voltage‐lift circuit: Topology, operating principle, and implementation

To meet the higher DC link voltage requirement in distributed energy resources (DERs) such as fuel cells (FCs), wind turbines (WTs), and photovoltaic (PV) systems, DC–DC converters are applied. A voltage‐lift (VL) circuit‐based transformer‐less active switched LC‐network (ASLC) converter with a high‐voltage gain is proposed in this paper. Compared to a similar reference converter, the voltage gain of the proposed converter increases efficiently by adding one extra capacitor and diode. The operation of the converter in continuous current mode (CCM) and discontinuous current mode (DCM), the analysis of the steady‐state condition, and comparative analysis with some similar converters are discussed. Moreover, the parasitic elements are assumed to calculate the DC‐voltage gain and the efficiency of the converter accurately. The performance of the proposed step‐up converter is simulated in the PSIM software. A prototype circuit rating of about 20/280 V, 200 W of converter model is designed, and its performance is validated. The experimental outcomes clarify the feasibility of the proposed converter.