A Novel High-Gain DC-DC Topology Based on Coupled Inductors and Decreased Voltage Stresses on Output Elements

A high-gain coupled-inductor-based boost voltage converter is presented for renewable energies applications. This converter uses a two-winding coupled inductor to increase the voltage boosting capability. In order to decrease the voltage stresses on output elements including the output diode, series diodes are used at the output terminal. The energy of leakage inductor is led through the clamp circuit and into the load. Voltage spikes are eliminated, and elements voltage stresses are reduced to less than output voltage. Design, analysis, simulation and experimental data for the presented converter are provided for verification of operation.