Design and Evaluation of Modifiable Impedance Matching Coupler for Narrowband DC Power Line Communications

2018 ◽  
Vol E101.A (12) ◽  
pp. 2328-2337
Author(s):  
Bingting WANG ◽  
Ziping CAO ◽  
Song SHI ◽  
Shaoteng GAO
Keyword(s):  
Impedance Matching ◽  
Power Line ◽  
Power Line Communications ◽  
Dc Power

Design and Evaluation of Band-Pass Matching Coupler for Narrow-Band DC Power Line Communications

2019 ◽  
Vol 28 (07) ◽  
pp. 1950119 ◽  
Author(s):  
Bingting Wang ◽  
Ziping Cao ◽  
Zhen Luan ◽  
Bo Zhou
Keyword(s):  
Low Cost ◽  
Impedance Matching ◽  
Power Line ◽  
Distributed Parameter ◽  
Experimental Procedure ◽  
Power Line Communications ◽  
Average Value ◽  
Dc Power ◽  
Band Pass ◽  
The Cost

In power line communication (PLC), coupling transformers are usually required for coupling, band-pass filtering and impedance matching. However, coupling transformer design involves so many parameters that it is typically an imprecise and experimental procedure. In addition, the cost and size of transformers prevent them from being an economic and compact solution for PLC couplers. This paper first analyzes a simplified, distributed parameter model of the power line, which can be used to calculate power line impedance easily and accurately. Next, a low-cost, band-pass matching coupler with compact architecture is designed to replace the coupling transformer for direct current PLC (DC-PLC), which ensures impedance matching on the basis of an accurate power line impedance instead of using an average value. Finally, simulations as well as laboratory tests are conducted under 95–125[Formula: see text]kHz (CENELEC B-band), which confirm the new coupler’s excellent band-pass filtering and impedance matching performance.

scholarly journals A Review of Impedance Matching Techniques in Power Line Communications

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 1022 ◽  
Author(s):  
Wang ◽  
Cao
Keyword(s):  
Impedance Matching ◽  
Power Line ◽  
Research Directions ◽  
Impedance Mismatch ◽  
Power Line Communications ◽  
Effective Impedance ◽  
Previous State ◽  
Specific Frequency ◽  
Matching Techniques

Impedance mismatch that degrades signal power transfer and affects communication reliability is a major obstacle for power line communications (PLC). Impedance matching techniques can be designed to effectively compensate for the impedance mismatch between PLC modems and power line networks at a specific frequency or for a given frequency band. In this paper, we discuss the tradeoffs that need to be made when designing an effective impedance matching network. We also make a comprehensive review of previous state-of-the-art PLC impedance matching techniques and provide a useful classification of each technique. Finally, we discuss important issues (concerns) and provide suggestions for research directions deserving more attention. This review provides a useful guideline for researchers and manufacturers to quickly understand impedance matching principles and facilitate the design of an effective impedance matching coupler for PLC applications.

Integrated Impedance-Matching Coupler for Smart Building and Other Power-Line Communications Applications

2015 ◽  
Vol 30 (2) ◽  
pp. 949-956 ◽  
Author(s):  
Petrus A. Janse van Rensburg ◽  
Mloyiswa P. Sibanda ◽  
Hendrik C. Ferreira
Keyword(s):  
Impedance Matching ◽  
Power Line ◽  
Power Line Communications ◽  
Smart Building

scholarly journals Power Line Communications for Automotive High Voltage Battery Systems: Channel Modeling and Coexistence Study with Battery Monitoring

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1851
Author(s):  
Thomas F. Landinger ◽  
Guenter Schwarzberger ◽  
Guenter Hofer ◽  
Matthias Rose ◽  
Andreas Jossen
Keyword(s):  
High Voltage ◽  
Electrochemical Impedance ◽  
Impedance Matching ◽  
Channel Modeling ◽  
Power Line ◽  
Small Scale ◽  
Cell Coupling ◽  
Power Line Communications ◽  
Transfer Characteristics ◽  
Single Carrier

As electric vehicles are gaining increasing worldwide interest, advances in driving range and safety become critical. Modern automotive battery management systems (BMS) compete with challenging performance and safety requirements and need to monitor a large amount of battery parameters. In this paper, we propose power line communications (PLC) for high voltage (HV) traction batteries to reduce the BMS wiring effort. By modeling a small-scale battery pack for frequencies up to 300 MHz, we predict the PLC channel transfer characteristics and validate the results using a PLC hardware demonstrator employing a narrowband single-carrier modulation. The results demonstrate that battery PLC is a demanding task due to low access impedances and cell coupling effects, yet transfer characteristics can be improved by optimal impedance matching. PLC for HV BMS not only saves weight and cost, but also improves flexibility in BMS design. PLC enables single-cell monitoring techniques such as online electrochemical impedance spectroscopy (EIS) without additional wiring. Online EIS can be used for in-situ state and temperature estimation saving extra sensors. This work unveils possible coexistence issues between PLC and battery monitoring. In particular, we demonstrate that certain PLC data or packet rates have to be avoided not to interfere with EIS measurements.

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