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High voltage gain dc–dc converters based on coupled inductors

High voltage gain dc–dc converters based on coupled inductors

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In this study, two new high voltage gain dc–dc converters are proposed. In the proposed converters, two coupled inductors are used to increase and decrease the output voltage more than the traditional dc–dc converters in boost and buck operations, respectively. In these converters, by increasing the turns ratio of the coupled inductors, the voltage conversion ratio is increased for the whole range of duty cycles. The proposed topologies are analysed in all operating modes and the values of current stresses of all switches, voltage stresses on all switches, input current ripples and voltage gains are calculated for boost and buck operations. Finally, the accurate performance of the proposed converters is verified through experimental and Power System Computer Aided Design (PSCAD)/Electro Magnetic Transient Design and Control (EMTDC) simulation results.

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