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<p>As the penetration of renewable energy sources (RES) increases and the worldwide demand for efficient energy conversion grows, the need for advanced DC-DC converter topologies is increasing. Dual-input DC-DC converters have been highlighted as promising solutions for applications such as renewable energy systems, microgrids, portable electronics, and electric vehicles. In addition, they are suitable for applications that require high voltage regulation under widely varying input and output voltages while achieving a high-power density. Dual-input DC-DC converters enable the connection of multiple energy sources (e.g., photovoltaic systems, fuel cells, batteries and supercapacitors) in a single power conversion stage. This paper presents a systematic review of non-isolated dual-input dc-dc converter topologies including dual-input single-output (DISO) and dual-input dual-output (DIDO) topologies. The topologies are compared in terms of characteristics such as voltage gain, efficiency, number of devices and control complexity, to aid in topology selection for various applications. The main design challenges of these topologies are also highlighted and commonly applied control strategies are analysed. It also identifies two promising solutions- AI-based control techniques and wide-bandgap (WBG) semiconductor technologies, represented by silicon carbide (SiC) and gallium nitride (GaN)—for advanced renewable energy and smart-grid applications.</p>

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A Review of Dual-Input Non-isolated DC-DC Converters and Control Techniques for Interfacing Renewable Energy System

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • Atul Kumar Lal,
  • Anmol Ratna Saxena

摘要

As the penetration of renewable energy sources (RES) increases and the worldwide demand for efficient energy conversion grows, the need for advanced DC-DC converter topologies is increasing. Dual-input DC-DC converters have been highlighted as promising solutions for applications such as renewable energy systems, microgrids, portable electronics, and electric vehicles. In addition, they are suitable for applications that require high voltage regulation under widely varying input and output voltages while achieving a high-power density. Dual-input DC-DC converters enable the connection of multiple energy sources (e.g., photovoltaic systems, fuel cells, batteries and supercapacitors) in a single power conversion stage. This paper presents a systematic review of non-isolated dual-input dc-dc converter topologies including dual-input single-output (DISO) and dual-input dual-output (DIDO) topologies. The topologies are compared in terms of characteristics such as voltage gain, efficiency, number of devices and control complexity, to aid in topology selection for various applications. The main design challenges of these topologies are also highlighted and commonly applied control strategies are analysed. It also identifies two promising solutions- AI-based control techniques and wide-bandgap (WBG) semiconductor technologies, represented by silicon carbide (SiC) and gallium nitride (GaN)—for advanced renewable energy and smart-grid applications.