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首页> 外文期刊>Power Delivery, IEEE Transactions on >Integrated Impedance-Matching Coupler for Smart Building and Other Power-Line Communications Applications
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Integrated Impedance-Matching Coupler for Smart Building and Other Power-Line Communications Applications

机译：适用于智能建筑和其他电力线通信应用的集成阻抗匹配耦合器

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摘要

Power-line communications is a promising technology to help automate buildings, since it utilizes the in situ power cabling as a communications channel. However, couplers are required to inject and extract the communication signal from the power grid. Most power-line communications couplers make use of a small transformer to adapt impedance levels while also providing galvanic isolation. The cost and size of these transformers have been hindrances in the quest for compact, economic couplers. Previous attempts to eliminate this coupling transformer, while maintaining impedance adaptation, have not been successful in reducing component cost or physical size. In this paper, a novel approach is followed: 1) a suitable dual-function bandpass matching circuit is designed for ordinary electronics, whereafter 2) the specifications of this bandpass matching circuit are upgraded to function safely in the power-grid environment as a coupler. Therefore, a matching circuit is transformed into a compact power-line coupler, which further exhibits bandpass filtering and excellent impedance-adapting performance. Simulations as well as laboratory measurements are shown which confirm the accuracy of the design. Finally, practical 220-V measurements in an office block are presented, which prove the versatility of this novel coupler when power-grid conditions fluctuate.
机译：电力线通信是一种将建筑物自动化的有前途的技术，因为它利用现场电力电缆作为通信通道。但是，需要耦合器从电网注入和提取通信信号。大多数电力线通信耦合器都使用小型变压器来适应阻抗水平，同时还提供电流隔离。这些变压器的成本和尺寸一直是寻求紧凑，经济的耦合器的障碍。在保持阻抗适应性的同时，消除这种耦合变压器的先前尝试并未成功地降低组件成本或减小物理尺寸。本文采用一种新颖的方法：1）为普通电子设备设计合适的双功能带通匹配电路，此后2）对该带通匹配电路的规格进行升级，以在电网环境中安全地用作耦合器。因此，将匹配电路转换为紧凑的电力线耦合器，进一步展现了带通滤波和出色的阻抗适应性能。显示了仿真和实验室测量结果，证实了设计的准确性。最后，介绍了在办公区中进行的实际220V测量，这证明了这种新型耦合器在电网条件变化时的多功能性。

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