2018 IEEE Applied Power Electronics Conference and Exposition (APEC) 2018

DOI: 10.1109/apec.2018.8341073

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Investigation of a DC bus differential mode EMI filter for AC/DC power adapters

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Cited by 12 publications

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“…Fig. 1 MMC structure EMI suppression is mainly carried out from two aspects: noise source [8] or propagation path [9][10] .…”

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confidence: 99%

Uniform Distribution Spread-spectrum Modulation Strategy for MMC to Reduce Conducted EMI and Switching Loss

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et al. 2022

Chin. J. Electr. Eng.

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Modular multilevel converters (MMCs) have been widely used owing to their superior performance. However, the rapid switching of power electronics devices causes serious electromagnetic interference (EMI). There are a large number of obvious EMI peaks in the frequency spectrum of the carrier phase-shifted constant-switching-frequency pulse-width modulation (CSFPWM).Spreading the EMI across a wider frequency range can help to reduce the EMI peaks. In this study, we designed a uniform distribution (UD) spread-spectrum modulation technology using the principle of uniform switching frequency distribution and minimum switching loss for MMC. Its feasibility is verified by theoretical derivation and simulation. Then, the effectiveness of UDPWM in reducing the EMI is verified in experiments with a prototype MMC testbed in the lab. Compared with traditional CSFPWM, UDPWM can reduce conducted EMI by 10-20 dB. Also, compared with random PWM (RPWM), UDPWM can improve efficiency and reduce total harmonic distortion (THD) of output voltage and current in MMC.

“…Fig. 1 MMC structure EMI suppression is mainly carried out from two aspects: noise source [8] or propagation path [9][10] .…”

mentioning

confidence: 99%

Uniform Distribution Spread-spectrum Modulation Strategy for MMC to Reduce Conducted EMI and Switching Loss

¹

,

²

,

³

et al. 2022

Chin. J. Electr. Eng.

View full text Add to dashboard Cite

Modular multilevel converters (MMCs) have been widely used owing to their superior performance. However, the rapid switching of power electronics devices causes serious electromagnetic interference (EMI). There are a large number of obvious EMI peaks in the frequency spectrum of the carrier phase-shifted constant-switching-frequency pulse-width modulation (CSFPWM).Spreading the EMI across a wider frequency range can help to reduce the EMI peaks. In this study, we designed a uniform distribution (UD) spread-spectrum modulation technology using the principle of uniform switching frequency distribution and minimum switching loss for MMC. Its feasibility is verified by theoretical derivation and simulation. Then, the effectiveness of UDPWM in reducing the EMI is verified in experiments with a prototype MMC testbed in the lab. Compared with traditional CSFPWM, UDPWM can reduce conducted EMI by 10-20 dB. Also, compared with random PWM (RPWM), UDPWM can improve efficiency and reduce total harmonic distortion (THD) of output voltage and current in MMC.

Investigate and Improve the Distorted Waveforms for Core Loss Measurement with Arbitrary Excitations

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et al. 2021

2021 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Advances of Modeling and Reduction of Conducted and Radiated EMI in Flyback Converters

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et al. 2020

2020 IEEE Energy Conversion Congress and Exposition (ECCE)

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