{"title":"传输窗调制的磁场能量收集和电源管理","authors":"Hongfei Xiao;Han Peng;Yidong Zhao;Liwen Hou","doi":"10.1109/TPEL.2025.3528110","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":13267,"journal":{"name":"IEEE Transactions on Power Electronics","volume":"40 5","pages":"7573-7585"},"PeriodicalIF":6.5000,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Magnetic Field Energy Harvesting and Power Management With Transfer Window Modulation\",\"authors\":\"Hongfei Xiao;Han Peng;Yidong Zhao;Liwen Hou\",\"doi\":\"10.1109/TPEL.2025.3528110\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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.\",\"PeriodicalId\":13267,\"journal\":{\"name\":\"IEEE Transactions on Power Electronics\",\"volume\":\"40 5\",\"pages\":\"7573-7585\"},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2025-01-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Power Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10836874/\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Power Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10836874/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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.
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.