The Optimal Control Method of Test Power Supply for DC Distribution Network

IF 0.6 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Recent Advances in Electrical & Electronic Engineering Pub Date : 2023-10-09 DOI:10.2174/0123520965272293231005042405

Jun Zhang, Feng Pan, Yilin Ji, Jinli Li, Jicheng Yu

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引用次数: 0

Abstract

Background:: The test power supply is one of the key devices in the DC distribution network, which is necessary to supply power with high quality for testing other devices' performance. The double active bridge (DAB) converter is a common circuit topology for test power supply, which has the advantages of high-frequency electrical isolation, bi-directional power flow, and high power density. For the converter, control methods, such as single-phase-shift (SPS) control, and single-current stress or single-return power optimization under extended-phase-shift (EPS) control, have their limitations, which influences efficiency. Objective:: This paper aims to propose a dual-objective optimal control method, which can effectively improve efficiency of the test power supply. Methods:: This paper addresses the limitations of SPS control, and single-current stress or singlereturn power optimization under EPS control of the DAB converter, and proposes a dual-objective optimal control method based on the idea of using objective planning in the full power range under the condition of satisfying soft switching, which effectively improves efficiency of the test power supply. Results:: With the proposed dual-objective optimal control method, the converter achieves a smaller current stress similar to that with the single-current stress optimal control, and the return power is also reduced by 29.51%. Efficiency of the test power supply reaches 86.9%, which is better than 82.5% with SPS control and 85.3% with single-current stress optimization under EPS control. The experimental results fully verify the effectiveness of the proposed control method. Conclusion:: A dual-objective optimal control method is proposed. By using the presented method, current stress and return power are both optimally designed, so the efficiency of the test power supply can be effectively improved. conclusion: A dual-objective optimal control method is proposed. By using the presented method, the efficiency of the test power supply can be effectively improved. other: none

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直流配电网试验电源的最优控制方法

背景:测试电源是直流配电网中的关键设备之一，必须为测试其他设备的性能提供高质量的电源。双有源桥(DAB)变换器具有高频电隔离、双向潮流、高功率密度等优点，是测试电源常用的电路拓扑。对于变换器而言，单相移(SPS)控制、扩展相移(EPS)控制下的单电流应力或单回功率优化等控制方法都有其局限性，影响效率。目的:本文旨在提出一种能有效提高测试电源效率的双目标最优控制方法。方法:针对SPS控制的局限性，以及EPS控制下DAB变换器的单电流应力或单回功率优化问题，在满足软开关的情况下，在全功率范围内采用目标规划的思想，提出了一种双目标最优控制方法，有效提高了测试电源的效率。结果:采用本文提出的双目标最优控制方法，变换器的电流应力比单电流应力最优控制方法小，返回功率也降低了29.51%。测试电源效率达到86.9%，优于SPS控制下的82.5%和EPS控制下单电流应力优化的85.3%。实验结果充分验证了所提控制方法的有效性。结论:提出了一种双目标最优控制方法。采用该方法对测试电源的电流应力和返回功率进行了优化设计，有效地提高了测试电源的效率。结论:提出了一种双目标最优控制方法。采用该方法可以有效地提高测试电源的效率。其他:无

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来源期刊

Recent Advances in Electrical & Electronic Engineering ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

1.70

自引率

16.70%

发文量

101

期刊介绍： Recent Advances in Electrical & Electronic Engineering publishes full-length/mini reviews and research articles, guest edited thematic issues on electrical and electronic engineering and applications. The journal also covers research in fast emerging applications of electrical power supply, electrical systems, power transmission, electromagnetism, motor control process and technologies involved and related to electrical and electronic engineering. The journal is essential reading for all researchers in electrical and electronic engineering science.