Design an asymmetrical 49-level inverter fed by battery and PV energy sources

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-04-02 DOI:10.1016/j.csite.2025.106080

Reving Masoud Abdulhakeem , Ali Kircay , Rakan Khalil Antar

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Abstract

This study investigates the design and performance of an asymmetrical 49-level cascaded inverter specifically developed for renewable energy applications. The inverter's operation is analyzed under three distinct scenarios: utilizing DC battery sources configured in a per-unit voltage ratio (1:2:7:14), employing DC batteries with actual voltage levels (40:80:280:560 V), and replacing the DC sources with photovoltaic (PV) modules. The simulation results demonstrate the inverter's exceptional capability to produce high-quality sinusoidal output voltage and current waveforms with significantly low harmonic distortion. In the per-unit voltage configuration, the inverter achieves an RMS voltage (Vo_RMS) of 16.9719V and an RMS current (Io_RMS) of 1.0569A, with a total harmonic distortion of 0.71216 % for voltage (THD_Vo) and 0.093319 % for current (THD_Io). When configured with actual voltage levels, the system delivers Vo_RMS = 679.0492V and Io_RMS = 4.265A, with THD_Vo of 0.71227 % and THD_Io of 0.16719 %. With PV modules system, the inverter achieves Vo_RMS = 692.7293V and Io_RMS = 43.1367A, and the THD values for output voltage and current were 1.2926 % and 0.33963 %, respectively. These results highlight the inverter's versatility and efficiency in providing high-quality power output while maintaining minimal harmonic distortion, making it a promising solution for modern renewable energy systems and industrial applications.

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设计了一种由蓄电池和光伏电源供电的非对称49电平逆变器

本研究研究了一种专门为可再生能源应用开发的非对称49电平级联逆变器的设计和性能。在三种不同的场景下，分析了逆变器的运行情况：使用单位电压比（1:2:7:14）配置的直流电池电源，使用实际电压水平（40:80:280:560 V）的直流电池，以及用光伏（PV）模块替换直流电源。仿真结果表明，该逆变器能够产生高质量的正弦输出电压和电流波形，谐波失真明显降低。在单位电压配置下，逆变器的有效值电压（VoRMS）为16.9719V，有效值电流（IoRMS）为1.0569A，电压（THDVo）和电流（THDIo）的总谐波失真分别为0.71216%和0.093319%。当配置实际电压等级时，系统输出VoRMS = 679.0492V, IoRMS = 4.265A， THDVo为0.71227%，THDIo为0.16719%。在光伏组件系统中，逆变器实现了VoRMS = 692.7293V, IoRMS = 43.1367A，输出电压和电流的THD值分别为1.2926%和0.33963%。这些结果突出了逆变器在提供高质量功率输出的同时保持最小谐波失真的多功能性和效率，使其成为现代可再生能源系统和工业应用的有前途的解决方案。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.