Impact of Pseudo-Random Modulation on Measured Conducted EMI

Angel Pena-Quintal; Hermes Loschi; Robert Smolenski; Mark Sumner; Dave Thomas; Steve Greedy; Piotr Lezynski; Frank Leferink

doi:10.1109/MEMC.2022.9873829

Impact of Pseudo-Random Modulation on Measured Conducted EMI

Angel Pena-Quintal
, Hermes Loschi
, Robert Smolenski
, Mark Sumner
, Dave Thomas
, Steve Greedy
, Piotr Lezynski
, Frank Leferink

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

174 Downloads (Pure)

Abstract

This paper demonstrates that using conventional frequency scanning methods for the evaluation of conducted electromagnetic interference generated by DC/DC converters can give misleading results when pseudo-random modulation is used as part of the converter control scheme. The paper therefore proposes that the resolution bandwidth of the super heterodyne EMI test receiver used for measurements and the dwell time should be adjusted to match the control parameters of the random modulation scheme. The use of different values for resolution bandwidth and dwell time is demonstrated and measurements for random and fixed modulation schemes are compared.

Original language	English
Pages (from-to)	84-92
Number of pages	9
Journal	IEEE electromagnetic compatibility magazine
Volume	11
Issue number	2
Early online date	31 Aug 2022
DOIs	https://doi.org/10.1109/MEMC.2022.9873829
Publication status	Published - 2 Sept 2022

Keywords

22/3 OA procedure

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10.1109/MEMC.2022.9873829

Impact_of_Pseudo-Random_Modulation_on_Measured_Conducted_EMIFinal published version, 1.83 MBLicence: Taverne

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AU - Pena-Quintal, Angel

AU - Loschi, Hermes

AU - Smolenski, Robert

AU - Sumner, Mark

AU - Thomas, Dave

AU - Greedy, Steve

AU - Lezynski, Piotr

AU - Leferink, Frank

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N2 - This paper demonstrates that using conventional frequency scanning methods for the evaluation of conducted electromagnetic interference generated by DC/DC converters can give misleading results when pseudo-random modulation is used as part of the converter control scheme. The paper therefore proposes that the resolution bandwidth of the super heterodyne EMI test receiver used for measurements and the dwell time should be adjusted to match the control parameters of the random modulation scheme. The use of different values for resolution bandwidth and dwell time is demonstrated and measurements for random and fixed modulation schemes are compared.

AB - This paper demonstrates that using conventional frequency scanning methods for the evaluation of conducted electromagnetic interference generated by DC/DC converters can give misleading results when pseudo-random modulation is used as part of the converter control scheme. The paper therefore proposes that the resolution bandwidth of the super heterodyne EMI test receiver used for measurements and the dwell time should be adjusted to match the control parameters of the random modulation scheme. The use of different values for resolution bandwidth and dwell time is demonstrated and measurements for random and fixed modulation schemes are compared.

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SP - 84

EP - 92

JO - IEEE electromagnetic compatibility magazine

JF - IEEE electromagnetic compatibility magazine

IS - 2

ER -

Impact of Pseudo-Random Modulation on Measured Conducted EMI

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Keywords

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