Measurement of noise source impedance of off-line converters

Zhang, Dongbing; Chen, D.Y.; Nave, M.J.; Sable, D.

doi:10.1109/63.867670

Cited by 94 publications

(2 citation statements)

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“…Therefore, it is essential to accurately extract the impedance information of the noise source to provide a basis for the design of the EMI filter. The impedance information of equipment under test (EUT) can be obtained by traditional extraction methods [4][5][6][7][8][9], but there are still many defects that need further improvement such as the equivalent RCL parameters of the impedance cannot be extracted [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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

Zhou

Zhao

Jin

et al. 2020

IET Power Electronics

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In this study, a new method employing scattering parameters (SPs) method, genetic algorithm (GA) and Levenberg-Marquardt algorithm (LM) is proposed for modelling conducted electromagnetic interference (EMI) noise source impedance. On the basis of the impedance information extracted by traditional SP method, GA is adopted to optimise the impedance information by taking advantage of the fast convergence speed. The obtained values of the RCL parameter are used as a set of initial values. Then, by using the advantage of the high precision of the LM, the initial values obtained by the GA are iteratively calculated. Better results can be obtained by using this combination method. This method improves the processing accuracy while ensuring the processing speed and contributes to the design of conduction EMI filter.

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Section: Introductionmentioning

confidence: 99%

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

Zhou

Zhao

Jin

et al. 2020

IET Power Electronics

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show abstract

“…Third, many vendors are unwilling to share details of their products, making it difficult to get the full information required in impedance modeling, then how to enable a 'black-box' impedance modeling and stability estimation is a key point in industrial applications. To overcome this challenge, the impedance measurement is developed to directly obtain the impedance by measurement and frequency scanning without the prior information of inner control systems and enables the 'black-box' stability estimation [37][38]. However, the existing impedance measurement-based stability analysis methods are conducted only at the stiff operating scenario, and cannot deal with continuous variations.…”

Section: Research Gapsmentioning

confidence: 99%

Artificial Intelligence Enabled Impedance Identification and Stability Estimation of Grid-Converter System

Zhang

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Moving towards a carbon-neutral society, traditional power systems are going through a shift with the wide integration of renewable energy resources, which require powerelectronics-based systems as an alternative to synchronous generator systems. However, the interaction between the grid and the internal control systems of power electronics converters may result in the instability of the grid-converter system, which will threaten the security of grid operation and limit the further integration of renewables. 20 Chapter No. Related Publications 2 C1 3 J1 4 J2, C2 5 J3

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EMI Filters

2023

Design of Three‐Phase AC Power Electronics Converters

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Measurement of noise source impedance of off-line converters

Cited by 94 publications

References 1 publication

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

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

Artificial Intelligence Enabled Impedance Identification and Stability Estimation of Grid-Converter System

EMI Filters

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