Abstract

This study presents a new high step-up resonant converter for renewable energy applications. Since, renewable sources introduce relatively low voltage, it is necessary to step up the voltage in order to be used in regular applications. The proposed converter has employed a coupled inductor and a switched capacitor to step up the output voltage. An active clamp circuit has been adopted to guarantee zero voltage switching for the switches. Also, the clamp capacitor has been implemented in series with the output capacitor so as to more extend output voltage. Furthermore, the converter operates in resonant mode, resulting in lower switching losses, zero current switching (ZCS) for diodes with low di/dt, and high voltage gain. The proposed converter has been analyzed thoroughly and the results have been validated through simulation.

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