A new nonisolated soft switched DC-DC bidirectional converter with high conversion ratio

A new nonisolated soft switched DC‐DC bidirectional converter with high conversion ratio and low voltage stress on the switches

“…As can be seen from this figure, except for 11,13 and 19 the other converters have lower efficiency than the proposed converter in the same power with the proposed converter (100 W). The converters in 13 and 19 have high efficiency, however, these converters have high stresses on the semiconductor elements. In addition to stress, 13 has a high number of elements, which increases the cost and volume of the converter.…”

“…Converter in 17 has a high number of elements and the voltage stress on the boost switch is high, which decreases the efficiency of the converter. In 19 , the number of switch is lower than proposed converter; but, in this converter, voltage stress on the buck switch is high and also voltage gain in boost mode is lower than proposed converter. The number of elements in 20 is higher than proposed converter and this converter have six switches, which controls of the converter is complicated.…”

A high step-up Z-source-flyback converter with integrated inductors for photovoltaic applications

“…1, like solar energy, wind energy and fuel cells. One of the challenging issues in order to use solar energy and fuel cells is their low voltage (Vesali et al, 2020). Because generally inverter modules are fed with 300-400 V, therefore low voltage of renewable energy sources must be boosted.…”