期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 37, 期 10, 页码 11985-11995出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2022.3175737
关键词
Electromagnetic interference; Switching frequency; Modulation; Electromagnetic compatibility; Time measurement; Mathematical models; Detectors; Bit error rate; computational modeling; deterministic modulation; electromagnetic compatibility (EMC); power electronic converter; random modulation (RanM); statistical analysis; time-domain measurements
资金
- European Union [812391]
This article compares the influence of deterministic and random modulation on the error rate in serial communication systems. The results show that there is no significant difference between random and deterministic modulation in terms of error rate probability in serial communication systems, within a certain range of switching frequencies.
In many papers, random modulation of power electronic converters is described as an electromagnetic interference (EMI) mitigation technique, which contributes to the assurance of electromagnetic compatibility (EMC) of systems consisting of power electronic converters and serial transmission-based control and measuring devices. However, experimental results as well as theoretical analyses of physical phenomenon suggest that the EMI reduction is ostensible and results from the measuring procedure adopted in standards. This article presents the first known approach to compare the influence of deterministic and random modulation of transmission errors rate in serial communication systems. The comparison is based on the especially developed mathematical models, which are validated experimentally, using a simple setup with a dc/dc converter injecting a noise into the USB/RS232 converter representing a serial transmission scheme. The comparison reveals that for the studied switching frequency range from 10 kHz to 1 MHz, on average, there is no significant difference between random and deterministic modulations with respect to the probability of error rate in serial communication systems. Thus, in such systems, random modulation should not be considered as a valid EMC-assuring technique.
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