Power Line Communication Characteristics of Inductive Cut-Core Coupling Unit Robust to Current Fluctuation 


Vol. 43,  No. 9, pp. 1469-1475, Sep.  2018
10.7840/kics.2018.43.9.1469


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  Abstract

Mines and shipyards are high-risk workplaces, but due to the structure and location of the workplace, it is not easy to build a fixed infrastructure for a stable communication network. Therefore, power line communication for safety monitoring is being studied using power line of workplace. In this study, we propose a method to guarantee stable communication speed even if large current fluctuation is continuously generated by equipment requiring high current. The magnetic flux density distribution and magnetic flux energy of the ferrite type toroidal core and the cut core were calculated using FEMM. The low saturation magnetic flux density of the ferrite core affects the communication bandwidth as the magnetic flux density easily approaches the saturation region as the primary current increases. The ferrite cut cores leak magnetic flux through air gaps and can increase the flux density saturation current. Even if the welding current fluctuates by 100 A or more, the cut core induction type coupler can double the communication distance and the communication speed more than 3 times than the toroidal core type coupler. Under the same current fluctuation condition, a 50 m long power line image transmission experiment using a webcam was performed. As a result of the experiment, the power line communication system equipped with the toroidal coupler failed to transmit the image, but when the cut core type coupler was installed, the image transmission was possible even at 90 m.

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  Cite this article

[IEEE Style]

J. Jeong, S. Yang, H. Kim, K. Sohn, "Power Line Communication Characteristics of Inductive Cut-Core Coupling Unit Robust to Current Fluctuation," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 9, pp. 1469-1475, 2018. DOI: 10.7840/kics.2018.43.9.1469.

[ACM Style]

Jae-hwan Jeong, Seung-ho Yang, Hyun-Sik Kim, and Kyung-Rak Sohn. 2018. Power Line Communication Characteristics of Inductive Cut-Core Coupling Unit Robust to Current Fluctuation. The Journal of Korean Institute of Communications and Information Sciences, 43, 9, (2018), 1469-1475. DOI: 10.7840/kics.2018.43.9.1469.

[KICS Style]

Jae-hwan Jeong, Seung-ho Yang, Hyun-Sik Kim, Kyung-Rak Sohn, "Power Line Communication Characteristics of Inductive Cut-Core Coupling Unit Robust to Current Fluctuation," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 9, pp. 1469-1475, 9. 2018. (https://doi.org/10.7840/kics.2018.43.9.1469)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880