In this article, a new hybrid transformerless high voltage gain dc–dc converter was created by merging a two-inductor boost converter with voltage multiplier and switched capacitor cells. The main advantages of the proposed converter are high voltage gain, simplicity of operation, high efficiency, lower voltage, and lower current stresses on the components. A 200 W, 37.4 V/400 V, 100 kHz prototype was implemented in the laboratory to evaluate the proposed converter, which reached a maximum efficiency of 98.24 $\%$ .

This article presents a family of transformerless active switched inductor and switched capacitor Ćuk high voltage gain dc–dc converters. The configuration of this family has the advantages of nonpulsating output current, high step-up voltage gain, low voltage, and current stress across the component. Thus, conduction losses are decreased owing to the low-voltage-rating of the semiconductors. The Ćuk converter with two switched-capacitor cells is evaluated in detail. The experimental results are provided to verify the theoretical analysis.

A design methodology for creating a set of high voltage gain DC-DC converters is presented and discussed in this paper. The proposed generation is based on ladder switched capacitor with coupled inductor. So, eight high voltage converters with a single switch without increasing the number of components are proposed. Detailed evaluations about the derivation of each topology, comparative analysis among main features of each converter are presented. These converters are evaluated in different aspects, such as: principle of operation, voltage gain; sensibility of the output voltage; total voltage stress; total current stress; ZCS; charging mode compared to the standard switched capacitors cells; design guidelines; power density; power losses and estimated efficiency. By these comparisons, the main feature and limitations of the analyzed converters are recognized. Thus, four topologies were chosen to be evaluated experimentally, considering 200 W, 30 V, 400 V and 50 kHz. The combination of the techniques provides the best trend off on the comparative analysis carried out in this work. The results show that, attention should be paid to choosing the best position to include a technique. In this case, the best choice was BCISC-V converter, which presented the best voltage gain, TCS, ZCS and efficiency characteristics.

This study proposes the modelling and control of a Ćuk converter with reduced redundant power processing and voltage multiplier for photovoltaic (PV) applications. The converter makes use of a perturb & observe algorithm to extract the maximum power of a single PV panel. The proposed converter is derived from the association of the and voltage multiplier cells in order to achieve the high step‐up voltage gain. This association allows a high‐voltage gain, low‐voltage and current stresses on the semiconductors. Experimental results are presented to validate the proposal a prototype with the input of 37.4 V, output voltage of 400 V and rated input power of 200 W.

In this study, a comparative evaluation of a family of isolated Ćuk DC/DC converter with step‐up techniques is presented. The voltage gain techniques are the reduced redundant power processing and the voltage multiplier. In addition, a detailed comparative analysis of the converters is showed. This comparison comprises features, such as the principle of operation, voltage gain curves, voltage and current stresses, design methodology, and estimated losses. By these comparisons, the main features and constraints of the analysed converters are identified. Four 200 W prototypes were constructed and evaluated in the laboratory. The isolated Ćuk converter with voltage multiplier showed the best performance and a peak efficiency of 95.86%.