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Implementation of different randomized PWM schemes using Atmega328p microcontroller for EMI reduction in boost converter

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Abstract

The randomized pulse width modulation techniques are used to reduce electromagnetic interference in power converters by spreading the harmonic energy. Thus, a wider spectrum with lower amplitudes is obtained. Based on the pulse width modulation signal parameters, three main randomized techniques are achieved: the random carrier frequency modulation, the random pulse width modulation and the random pulse position modulation. This paper presents a short review of the different implementation methods. Then, a detailed implementation of the three considered random techniques using Atmega328p microcontroller is detailed. Finally, an analysis of the experimental conducted electromagnetic noise taken from a boost converter is discussed. These results prove that the random carrier frequency modulation approach is completely better than other techniques in terms of electromagnetic noise reduction.

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Authors and Affiliations

  1. Processes, Energy, Environment and Electrical Systems Laboratory, University of Gabes, Gabes, Tunisia

    Dhia Chariag & Lassâad Sbita

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  1. Dhia Chariag
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  2. Lassâad Sbita
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Correspondence to Dhia Chariag.

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Chariag, D., Sbita, L. Implementation of different randomized PWM schemes using Atmega328p microcontroller for EMI reduction in boost converter. Electr Eng 102, 1063–1071 (2020). https://doi.org/10.1007/s00202-020-00934-7

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  • DOI: https://doi.org/10.1007/s00202-020-00934-7

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