In and, a hybrid boost and a double switch buck-boost converter are used for PV systems to increase the voltage gain and to extract the maximum power by the MPPT method. For example, using boost or SEPIC converters in a multilevel converter imposes voltage ripple on the output voltage -.īoost and buck-boost converters are conventional converters that have been frequently used in fuel cell systems and photovoltaic energy applications,. The main cause of these drawbacks is the base converter of multilevel systems. These topologies poses drawbacks that provide the motivations for proposing new structures. The others contain new methods such as the voltage-lift technique, which use multipliers and cascading as the second step of boosting the voltage. In some of them, the switching method between the inductors and capacitors have been changed. To increase the boosting gain, new topologies have been presented. Solving these problems requires new topologies based on conventional converters such as boost, buck-boost, SEPIC, Cuk and Zeta converters. However, problems like the inductor resistance effect, power loss and voltage drop on non-ideal components limit their operation in high duty cycles. According to the voltage conversion ratio equations of conventional converters, they should convert input to a high voltage. The efficiency and operation quality of these converters are influenced by switching in high duty cycles. There are several problems when it comes to achieve a high voltage gain with conventional DC-DC converters. In addition, they are in good agreements with each other. Experimental results validate the analysis. Furthermore, a prototype of the proposed converter and its combination with a 2x multiplier are built in the lab. The comparison illustrates the advantages of the proposed converter and its higher quality. The proposed converter voltage gain is similar to that of a conventional Boost converter. Experiments confirm the obtained theoretical equations. The design and analysis of the converter are done in continues conduction mode (CCM). A theoretical analysis demonstrates the positive points of the proposed converter. Its output voltage has a high quality and does not contain spikes. Its voltage ripple is reduced when compared to other converters. A reduction of the inductors size in comparison to Cuk converter and a reduction in the inductors resistance negative effects on efficiency are the important points of the proposed converter. The proposed converter has high efficiency and it can be used in multilevel DC-DC converters. In this paper, a DC-DC converter is proposed based on the Cuk converter.
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