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Abstract
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In this paper, a non‐isolated high step‐up dc‐dc converter based on coupled
inductor is proposed. The proposed converter can be used in renewable energy
applications. In suggested converter, the high voltage is achieved using 3‐winding
coupled inductor, which leads to low voltage rate of the switch. A clamp
circuit is used to recycle the leakage inductance energy. Also, the clamp circuit
prevents the creation of voltage spikes on semiconductor devices and causes
the voltage stress of elements are limited to less than the output voltage. The
presented theoretical analyses show that the operation of suggested converter
in continuous conduction mode needs to small magnetic inductor. Therefore,
the size of coupled inductor's core is reduced, and so the size and cost of
presented converter will be decreased. Analysis of the proposed converter is
provided with laboratory results to verify its performance.
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