传输窗调制的磁场能量收集和电源管理

IF 6.5 1区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Hongfei Xiao;Han Peng;Yidong Zhao;Liwen Hou
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引用次数: 0

摘要

磁场能量采集器(MEHs)广泛应用于电力系统的无线监测设备。缩短MEH以移动能量传递窗口被证明是提高收获功率的有效方法。然而,短路阶段的磁化电流损失通常被忽略,使得最大功率收集依赖于近似计算和经验设计。此外,一个实用的电源管理系统尚未开发。提出了一种基于传输窗调制(TWM)的MEHs电源管理系统。在考虑磁化电流损耗的情况下,分析了MEH的输出特性。它指导更准确地估计传递窗口,并允许通过数值计算设计最优传递窗口。在此基础上,提出了一种通过调制传输窗口长度来实现电压调节的TWM方法。最后,采用有源整流器和双向dc-dc变换器设计了自供电MEH系统。实验表明,该模型计算窗口长度的均方根误差为3.6%,传统模型的均方根误差为10.3%。通过设计线圈匝数,通过数值计算而不是经验设计来优化传递窗口。收获功率达到MEH最大潜能的80.9%。在长期运行试验中也实现了稳压,电压纹波小于0.15 V。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Magnetic Field Energy Harvesting and Power Management With Transfer Window Modulation
Magnetic field energy harvesters (MEHs) are widely used to supply wireless monitoring devices in power systems. Shorting the MEH to move the energy transfer window is proven to be efficient in enhancing the harvested power. However, magnetizing current losses in a short-circuiting phase were usually ignored, making the maximum power harvesting dependent on approximate calculation and empirical design. Additionally, a practical power management system has not yet been developed. This article proposes a novel power management system for MEHs based on transfer window modulation (TWM). The output characteristic of MEH is analyzed with magnetizing current losses considered. It guides a more accurate estimation of the transfer window and allows the optimal transfer window to be designed through numerical calculation. Furthermore, a TWM approach is proposed to achieve voltage regulation by modulating the length of the transfer window. Finally, a self-powered MEH system is designed with an active rectifier and bidirectional dc–dc converter. Experiments show the root mean squared error of the calculated window length is 3.6% for the proposed model and 10.3% for the traditional model. By designing the number of coil turns, the transfer window is optimized through numerical calculation rather than empirical design. The harvested power reaches 80.9% of the maximum potential of MEH. Voltage regulation is also achieved in the long-term operation test, with a voltage ripple of less than 0.15 V.
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来源期刊
IEEE Transactions on Power Electronics
IEEE Transactions on Power Electronics 工程技术-工程:电子与电气
CiteScore
15.20
自引率
20.90%
发文量
1099
审稿时长
3 months
期刊介绍: The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.
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