A new transformerless DC/DC converter with dual operating modes and continuous input current port

Abstract

In this work, a transformerless DC/DC converter is presented with dual operating modes buck-boost procedure. As a simple structure and continuous input current port, the system acts as a common ground between the output and input terminal. One operating mode, quadratic voltage gain ratio is D/(1-D) 2 , and other mode is D/(1-D). In the present study, the continuous conduction mode (CCM), steady-state conditions were assumed to analyze efficiency and small-signal modeling by replacing parasitic resistance effects. The findings revealed that in comparison with other buck-boost converters, the two voltage gain ratios were provided with fewer components and lower total switching device power in dual operating modes. Therefore, proposed converter can attract considerable attention for renewable energy applications, especially photovoltaic systems. Ultimately, the experimental findings of a prototype made in the laboratory are provided along with the received waveforms from the simulation in PLECS for validation purposes.

Validation of Sliding Mode and Passivity Control in High-Power Quadratic Buck Converter Through Rapid Prototyping

“…Recent advancements in the design and development of DC converters have introduced features like dual modes of operation, DC ports, high voltage gain ratios, bi-directional conversion capabilities, and enhanced efficiency [1], [2], [3], [4]. These innovations play a pivotal role in advancing energy conversion technologies, with the potential to benefit a wide range of applications, including renewable energy, energy storage systems, and power electronics [1], [2], [3], [4]. Within the realm of power conversion, there have been notable developments in various techniques and topologies for direct current (DC) to direct current (DC) converters.…”

“…Notably, the design of transformer less converters has witnessed significant progress, offering advantages such as reduced size, weight, and cost. Among these innovations, the transformer less DC/DC converter with dual modes of operation and continuous input current port has emerged [1]. Additionally, a novel transformer-less quadratic buck-boost converter, featuring a high voltage gain ratio and continuous input/output current ports, has been proposed [2].…”

Validation of Passivity-Based Control and Array PID in High-Power Quadratic Buck Converter Through Rapid Prototyping

“…Recent progress in the engineering and optimization of DC converters has led to the introduction of critical innovations. These include versatile operational modes, DC interfaces, elevated gain ratios for voltage, the ability to convert power in both directions and improved operational efficiency [1], [2], [3], [4]. Such advancements hold significant promise for transforming the landscape of energy conversion techniques, offering valuable benefits for multiple industries such as renewable energy sources, systems for storing energy, and the field of power electronics [1], [2], [3], [4].…”

“…These include versatile operational modes, DC interfaces, elevated gain ratios for voltage, the ability to convert power in both directions and improved operational efficiency [1], [2], [3], [4]. Such advancements hold significant promise for transforming the landscape of energy conversion techniques, offering valuable benefits for multiple industries such as renewable energy sources, systems for storing energy, and the field of power electronics [1], [2], [3], [4]. The domain of power conversion has witnessed the evolution of various strategies and configurations for converting direct current (DC) to direct current (DC), aiming to enhance efficiency and versatility for a broad range of uses.…”

“…Within this realm, the development of transformer less converters stands out, offering notable benefits by reducing size, weight, and expense. A critical advancement in this area is the creation of a transformer less DC/DC converter that operates in dual modes and features a continuous input current port, marking a substantial advancement in the field [1]. Furthermore, the innovation of a transformer-less quadratic buck-boost converter that achieves a high voltage gain ratio and maintains continuous current flow at both input and output ports has been introduced, showcasing significant enhancements in efficiency and functionality over conventional converter designs [2].…”