A Multifunctional Isolated and Non-Isolated Dual Mode Converter for Renewable Energy Conversion Applications

Abstract

Abstract:In this paper, a multifunctional isolated and non-isolated dual-mode low-power converter was designed for renewable energy conversion applications such as photovoltaic power generation to achieve different operating modes under bi-directional electrical conversion. The proposed topology consists of a bidirectional non-isolated DC/DC circuit and an isolated converter with a high-frequency transformer, which merge the advantages of both the conventional isolated converter and non-isolated converter with the combination of the two converter technologies. Compared with traditional converters, the multifunctional converter can not only realize conventional bi-directional functions, but can also be applied for many different operation modes and meet the high output/input ratio demands with the two converter circuits operating together. A novel control algorithm was proposed to achieve the various functions of the proposed converter. An experimental platform based on the proposed circuit was established. Both the simulation and experimental results indicated that the proposed converter could provide isolated and non-isolated modes in different applications, which could meet different practical engineering requirements.

Overview of Isolated Bidirectional DC–DC Converter Topology and Switching Strategies for Electric Vehicle Applications

“…Energies 2024, 17, 2434 2 of 29 aerospace applications, and renewable energy systems [11][12][13], such as photovoltaic (PV) arrays [14][15][16][17], fuel cells (FCs) [18,19], and other renewable energy systems [20], as shown in Figure 1.…”

Investigação de Estratégias de Controle Clássico aplicadas a Conversores de Potência do tipo Flyback

“…Atualmente, com o advento de novas fontes de energia renováveis, faz-se necessária a utilização de várias topologias de conversores de potência, dentre os quais destacam-se conversores não-isolados, amplamente utilizados em sistemas de energia solar conectadosà rede de energia elétrica (Wang et al, 2017;Wu et al, 2019). Porém, as topologias de conversores isolados são bastante aplicadas em sistemas de energia solar fotovoltaica encontradas especialmente em localidades remotas (Wang et al, 2017;Sher et al, 2017).…”

Improved adaptive backstepping sliding mode control for a three‐phase PWM AC–DC converter

“…The combination of power and electronic technology has greatly promoted the development of a converter, making it more and more widely used in industrial production. With the progress of modern industry, the performance requirements of converter have also been raised to a new altitude [1, 2]. However, when the switching devices and topology are fixed, the waveform quality, working efficiency, steady‐state and dynamic performance of voltage source PWM converter depend on the PWM algorithm and control strategy.…”