Ultrahigh-Step-Up Nonisolated Interleaved Boost Converter

Interleaved high step‐up ZVS DC–DC converter with coupled inductor and built‐in transformer for renewable energy systems applications

“…However, the ripple of the input current is high in these converters which seriously damages the PV and FC. Interleaving technique is a promising solution in high power applications to reduce the component size, increase the power level while maintain the efficiency, minimise the input current ripple and realise the thermal distribution [18–30]. Interleaved converters with winding cross‐coupled inductor technique have been introduced in [19–21] that achieve auto‐current sharing performance.…”

“…Although the ultra large gain is obtained, however, problems such as PV panel leakage current and safety arises in this configuration due to the lost common ground between the load and the source. For the purpose of adding an extra degree of freedom in design purposes, the proposed converters in [28–30] utilise the built‐in transformer and coupled inductor techniques to increase step‐up ratio, simultaneously. Although the leakage inductance can provide natural zero current switching (ZCS) in the converters of [28–30], however, it does not effectively reduce the switching losses and as a result, the switching frequency cannot be pushed to high levels for decreasing of the converter volume.…”

A new interleaved ultra‐large gain converter for sustainable energy systems

“…Another shortcoming of the single switch converters is high input current ripple that deteriorates the life time of the PV panel and FC. The interleaved converters are the promising solution for high efficiency and high power applications [20–43]. Due to current distribution between the two phases of the interleaved converters, the thermal stress and current stress of the component is decreased considerably and the input current ripple is minimised by 180° phase shift of the gate pulses of the power MOSFETs.…”

Single‐switch high‐efficiency hybrid boost–Ćuk DC/DC converter with high‐voltage gain and low‐voltage stress

“…Since the output voltage of the photovoltaic panel is low, non‐isolated high step‐up DC/DC converters are widely used to reach a suitable output voltage [1–8]. The standard DC/DC converter (boost) cannot achieve high performance in such applications due to its limitations, such as low efficiency and voltage gain at a high duty cycle, high‐voltage stresses on the semiconductors etc.…”