A High Gain DC-DC Converter with Coupled Inductor Voltage Doubler Cell and Low Output Current Ripple for DG Applications

In this paper, a high-gain DC-DC converter featuring a coupled inductor voltage doubler cell and low output current ripple for distributed generation applications. The converter incorporates a coupled inductance voltage doubling unit to achieve an exceptionally high voltage gain. The low output current ripple is realized by using the auxiliary inductor on the output side. The utilization of the diode-capacitor branch as a passive clamp branch reduces the maximum voltage stress on the switch and enables zero-current switching (ZCS). The operating principle of the converter is analyzed under both Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) conditions, and the parameters of the converter are provided.. Furthermore, The results are compared with high gain converters proposed in other literatures. Finally, The construction of a 200 W prototype has been completed, confirming the accuracy of the theoretical analysis.