Study on conducted EMI noise source modelling applied in electromagnetic compatibility analysis based on GA in cooperation with LM

Zhou, Mi; Zhao, Yongtao; Jin, Yan; Yan, Weili; Sun, Minghui; Wu, Xianqiang; Baoming, Xiao

doi:10.1049/iet-pel.2019.0696

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…The active filter has a good suppression effect on low-frequency noise signals [22], but is limited by the bandwidth of the amplifier device, its suppression effect on high-frequency noise signals is very limited, and it will also cause circuit system stability problems. Due to its relatively simple structure, wide effective frequency band, and a large amount of noise suppression, passive filter is currently the most widely used EMI suppression scheme for motor drives [23,24].…”

Section: Introductionmentioning

confidence: 99%

Design method of wide‐band high‐current air‐core inductor EMI filter for high voltage DC power of motor inverter of electric vehicle

Zhai

Yang

Hu³

et al. 2022

IET Power Electronics

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Passive filters are often used for electromagnetic interference (EMI) suppression of high voltage (HV) DC power supplies of electric vehicle (EV) motor controllers. The high current of the DC bus saturates the differential mode (DM) magnetic ring, while the leakage inductance of common mode (CM) inductor used as the DM inductance is usually very small, resulting in almost no suppression of DM EMI. A design method of broadband high‐current air‐core inductor passive filter is proposed. By using the air‐core inductor as DM inductor, the problem of easy saturation of the DM inductor core and the small leakage inductance of the CM inductor is solved, and improves the low frequency DM EMI suppression. Through the calculation and selection of the turning frequency point of the multi‐stage filter circuit, the effective frequency band can be improved. By analysing the influence of parasitic parameters, the problem of insufficient insertion loss of the filter at high frequency is solved. The experimental verification shows that the proposed air‐core inductor filter achieves 50 dB of CM and DM insertion loss in frequency range of 150 kHz–108 MHz, and meets the requirements of system conducted disturbance voltage specified in CISPR25‐2016Rd level 3.

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Section: Introductionmentioning

confidence: 99%

Design method of wide‐band high‐current air‐core inductor EMI filter for high voltage DC power of motor inverter of electric vehicle

Zhai

Yang

Hu³

et al. 2022

IET Power Electronics

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show abstract

“…The conducted emissions can generally be divided into common‐mode (CM) and differential‐mode (DM), according to their propagation paths. To suppress these emissions, an EMI filter should be installed between the noise source and the equipment under test (EUT) [6–9]. It has been proven that the value of the noise source impedance is essential when designing an EMI filter [10].…”

Section: Introductionmentioning

confidence: 99%

EMI filter design for single‐phase grid‐connected inverter with noise source impedance consideration

Liu

Peng

2020

IET power electron.

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It is well known that noise source impedance plays a significant role in designing conducted electromagnetic interference (EMI) filters. However, the noise source impedance in a switched‐mode power supply is not easy to extract. In this study, the noise source impedance in a single‐phase inverter is extracted under operating conditions based on a two‐probe approach. First, the noise source modelling and analysis are implemented for the inverter system to illustrate the importance of impedance. Furthermore, the proposed two‐probe method is introduced and then validated by several passive components. Proper and straightforward premeasurement calibrations are needed to eliminate the influence of the probes and cables. The approach can accurately extract the common‐mode and differential‐mode noise source impedances with different configurations according to the characteristics of their propagation paths. Compared with a traditional EMI filter design, the experimental results show that the one designed by the proposed approach can effectively attenuate the conducted EMI noises to meet the requirements with more appropriate and optimised parameters.

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Conducted interference suppression for Switched-Mode power supplies based on an impedance resonance design of piezoelectric ceramics

Zhang,

Yan,

Zhou

2025

AEU - International Journal of Electronics and Communications

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Study on conducted EMI noise source modelling applied in electromagnetic compatibility analysis based on GA in cooperation with LM

Cited by 4 publications

References 26 publications

Design method of wide‐band high‐current air‐core inductor EMI filter for high voltage DC power of motor inverter of electric vehicle

Design method of wide‐band high‐current air‐core inductor EMI filter for high voltage DC power of motor inverter of electric vehicle

EMI filter design for single‐phase grid‐connected inverter with noise source impedance consideration

Conducted interference suppression for Switched-Mode power supplies based on an impedance resonance design of piezoelectric ceramics

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