A solar energy system with a dual-input power converter and global MPPT for off-grid applications

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-02-06 DOI:10.1016/j.epsr.2025.111497

Hwa-Dong Liu , Bin-Juine Huang , Wei-Yu Chen , Jyun-Wei Shih

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引用次数: 0

Abstract

This study presents the development of a 200 W standalone solar power generation system. The system incorporates a simple dual-input power converter, utilizing a 200 W photovoltaic (PV) panel and a battery set as primary energy sources. Advanced PV charge controller technology is integrated, enabling the system to supply power to the load while charging the battery under varying environmental conditions. To enhance efficiency, the system employs a global maximum power point tracking (MPPT) technique, achieving up to 99 % MPPT efficiency, even in partially shaded or uniform sunlight conditions. Additionally, the system offers flexible frequency and duty cycle adjustments, maintaining total harmonic distortion (THD) below 0.087 % to ensure high-quality power output. For outdoor installations, a lightning protection device has been incorporated to safeguard the system from lightning damage, thereby improving overall stability. Simulated and experimental validation confirm the system's suitability for standalone applications, demonstrating high efficiency and practical feasibility. Ultimately, this power generation system not only functions as a 200 W power control device but can also be expanded into a plug-and-play microinverter, making it suitable for home use and promoting the adoption of sustainable energy solutions.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.