Abstract: A new high step-up converter, which is suitable for renewable energy system, is proposed in this paper. Through a Voltage multiplier module composed of switched capacitors and coupled inductors, a conventional interleaved boost converter obtains high step-up gain without operating at extreme duty ratio. The configuration of the proposed converter not only reduces the current stress but also constrains the input current ripple, which decreases the conduction losses and lengthens the life time of the input source. In addition, due to the loss less passive clamp performance, leakage energy is recycled to the output terminal. Hence, large voltage spikes across the main switches are alleviated, and the efficiency is improved. Even the low voltage stress makes the low-voltage-rated MOSFETs be adopted for reductions of conduction losses and cost. An additional battery control is added to the input renewable energy system to work as a back up storage system with reduces the variations in the output waveform
Keywords: interleaved converter, solar, Battery control.
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