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Abstract
Power line communication (PLC) is increasingly emerging as an important communication technology for the smart-grid environment. As PLC systems use the existing infrastructure, they are always exposed to conducted electromagnetic interference (EMI) from switching mode power converters, which need to be tightly controlled to meet EMC regulations and to ensure the proper operation of the PLC system. For this purpose, spread-spectrum modulation (SSM) techniques are widely adopted to decrease the amplitude of the generated EMI from the power converters so as to comply with EMC regulations. In this paper, the influence of a spread-spectrum-modulated SiC-based buck converter on the G3-PLC channel performance is described in terms of channel capacity reduction using the Shannon–Hartley equation. The experimental setup was implemented to emulate a specific coupling path between the power and communication circuits and the channel capacity reduction was evaluated by the Shannon–Hartley equation in several operating scenarios and compared with the measured frame error rate. Based on the obtained results, SSM provides the EMI spectral peak amplitude reduction required to pass the electromagnetic compatibility (EMC) tests, but results in increased EMI-induced channel capacity degradation and increased transmission error rate in PLC systems.
Highlights
Nowadays,using of the smart-grid has increased due to the increase in renewable energy resources and the remarkable enhancements in the reliability of the electrical network grid
Based on what is given in the literature, the purpose of this paper is to study the influence of the interference from a silicon carbide (SiC)-based DC buck converter, with or without spread-spectrum modulation (SSM), on the robustness of the G3-Power line communication (PLC) communication signal, as a common communication protocol used in smart-metering systems
In this paper we have shown the influence of electromagnetic interference (EMI) generated from a spread-spectrummodulated SiC-based buck converter on the G3-PLC communication channel performance in terms of the Shannon–Hartley channel capacity equation
Summary
Nowadays,using of the smart-grid has increased due to the increase in renewable energy resources and the remarkable enhancements in the reliability of the electrical network grid. Communication between smart-grid elements is essential to ensure the proper operation of the grid. In the complex smart-grid and micro-grid environment, the power line communication (PLC) is one of the most common techniques used for smart-meter applications [1], as it uses the existing power cables in the system to provide data transmission capabilities. Using existing power cables for data transmission, PLC leads to reduced investment and maintenance costs. The smart-meters use the narrowband PLC following the European. Norm (EN) 50065 that was established by CENELEC in 1992 [2]. Many industries begin the development of a PLC solution based on the regulation G3-PLC that has been established by the G3-PLC Alliance, while the industry specification PRIME
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