High‐step‐up enhanced super‐lift converter

Abstract

This study proposes a new high step‐up DC–DC converter based on a novel super‐lift structure and coupled inductor. The energy stored in the leakage inductance of the coupled inductor is recovered to the converter output, which leads to a snubber‐less operation and consequently a fewer‐component, lower‐cost and more‐efficient converter. This feature also reduces voltage stress and the current peak of the active switch without using a snubber circuit. Analysis of continuous current mode of the proposed converter considering the leakage inductance has been demonstrated. Moreover, a comparison between several converters has been done for further information about similar research works. Experimental results such as voltage and current waveforms and efficiency curve have been presented to show the practical characteristics of the proposed converter.

Design of New Nonisolated High Gain Converter for Higher Power Density

“…where P ind and P cap are the total power loss of the inductors and capacitors, respectively. P switch and P diode are the total Converter in [12] Converter in [13] Converter in [14] Converter in [15] Converter in [16] Converter in [17] Converter in Converter in Converter in Converter in Converter in [19] Converter in [20] Converter in [21] Converter in [22] Converter in [23] (a) **Total Semiconductor Switch [12] [6]…”

“…Figure 8(a) illustrates the comparison of voltage gain with various duty cycles. It is worth mentioning that the proposed converter provides higher voltage gain when compared to the topologies developed in [12][13][14][15][16][17][18][19][20][21][22][23]. Figure 8(b) clearly depicts the total semiconductor switch utilization and operating duty cycle of the proposed converter with other recently developed topologies.…”

“…Also, the component utilization factor is performed for a higher duty cycle of 0.8 for all converters, as shown in Figure 8(d). It is noted that the proposed converter has a higher M/TCC ratio as compared with other developed converters in [13,[15][16][17][18][19][20][21][22][23].…”

High voltage gain resonant DC-DC converter with vm cells for renewable sources applications

“…PSOL and Super lift DC-DC converters may find high voltage gain. But still, they suffer from hard switching losses [3,4]. Several full, quasi, and multi-resonant DC-DC converters have been proposed in the literature to solve these problems.…”

A new high step‐up DC power supply with modular switched capacitor cells

“…Unlike traditional inductor-based DC-DC converters, the SC ones do not rely on magnetic energy storage, leading to their lower electromagnetic radiation [2]. The SC converters can accordingly provide high voltage (HV) gain with LV stress elements in comparison with the conventional boost and buck-boost converters that in practice, high conversion gain cannot be achieved because of parasitic elements [3][4][5]. Furthermore, for the boost converter, an extremely large duty cycle operation will bring severe switching losses and high voltage stresses on the switch and diode, resulting in low efficiency, large filter value, and high cost.…”