Series Compensated Low Frequency Transformers Emulating Multipulse Rectifiers for Harmonic Current Content Minimization in Electrical Grids

IF 3.4 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2025-06-20 DOI:10.1109/ACCESS.2025.3581891

Carlos A. Munoz;Carlos R. Baier;Jesus C. Hernández;Esteban I. Marciel;Pedro E. Melin

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Abstract

This paper explores the use of series compensated low frequency transformers (SCLFT), operating in parallel to traditional low frequency transformers (LFT), to attenuate harmonic distortion caused by nonlinear loads in electrical networks. The proposed strategy achieves harmonic cancellation through a controlled phase shift between the SCLFT and LFT voltages, emulating the behavior of multi-pulse transformers. By integrating power converters into the LFT, the SCLFT’s operation is optimized to maximize system efficiency and implement a robust control algorithm for precise output voltage regulation. The effectiveness of the proposed approach is validated through hardware-in-the-loop (HIL) simulations and experimental testing, demonstrating a significant reduction in current harmonic distortion. These results position series-compensated SCLFTs as a viable solution for enhancing power quality in distribution grids. This technology offers a promising alternative to modernizing electrical infrastructure and paves the way for future applications in microgrid optimization and large-scale distribution systems.

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模拟多脉冲整流器的串联补偿低频变压器在电网中谐波电流含量最小化

本文探讨了串联补偿低频变压器（SCLFT）与传统低频变压器（LFT）并联运行的方法，以减弱电网中非线性负荷引起的谐波畸变。该策略通过控制SCLFT和LFT电压之间的相移来实现谐波消除，模拟了多脉冲变压器的行为。通过将功率转换器集成到LFT中，SCLFT的操作得到优化，以最大限度地提高系统效率，并实现精确输出电压调节的鲁棒控制算法。通过硬件在环（HIL）仿真和实验测试验证了该方法的有效性，表明该方法显著降低了电流谐波失真。这些结果表明串联补偿SCLFTs是提高配电网电能质量的可行方案。这项技术为电力基础设施现代化提供了一个有前途的替代方案，并为微电网优化和大规模配电系统的未来应用铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

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