Electromagnetic Interference of Power Converter with Random Modulation on the Power Line Communication System

Abduselam Hamid Beshir*, Lu Wan, Flavia Grassi, Paolo Stefano Crovetti, Xiaokang Liu, Xinglong Wu, Waseem El Sayed, Giordano Spadacini, Sergio Amedeo Pignari

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)
25 Downloads (Pure)


Random Pulse Width Modulation (RPWM) allows controlling the switching signal of power converters in order to reduce the harmonic peaks by spreading the noise spectrum. Currently, many manufacturers of power converters are deploying this modulation scheme in order to comply with Electromagnetic Compatibility (EMC) test requirements. However, when the converters coexist with Power Line Communication (PLC) systems, such as in Smart Grid (SG) applications, resorting to RPWM needs further investigations since it potentially affects the communication channel by increasing the bit error rate. This possible detrimental effect is investigated in this work, by considering a PLC system for automatic meter reading (AMR) implemented in a SG application. To this end, the model of a complete PLC system is implemented in SIMULINK, and Quadrature Phase Shift Keying (QPSK) modulation is used to model the PLC modems in the communication channel. Results show that, even if the deployment of RPWM techniques may lead to an appreciable reduction/spreading of the peaks in the noise spectrum, it may also lead to an increase of the bit error rate on the PLC system.
Original languageEnglish
Article number2979
Number of pages13
Publication statusPublished - 30 Nov 2021
Externally publishedYes


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