Prediction of Conducted Emissions in Satellite Power Buses

Spadacini, Giordano; Grassi, Flavia; Bellan, Diego; Pignari, Sergio A.; Marliani, F.

doi:10.1155/2015/601426

Cited by 17 publications

(36 citation statements)

References 5 publications

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“…It was shown that frequency-domain circuit simulation can be used to predict the filter IL for arbitrary load and line impedances. In perspective, this opens the way to the assessment of filter performance through broadband linear models of CE sources and loads [3]- [6]. The full potential of the proposed technique becomes explicit when modeling of EMI filters is to be run in combination with nonlinear, time-variant power-electronic systems, through component-level representations and time-domain circuit simulation [1], [7]- [10].…”

Section: Discussionmentioning

confidence: 99%

“…For effective characterization of power-electronic equipment as CE sources in the frequency domain, experimental methods to identify approximate, linear behavioral models composed of frequency-dependent impedances and sources were presented in [3], [4]. Together with circuit representations of lineimpedance stabilization networks (LISNs), energy sources, lumped or distributed-parameter models of cables, these frequency-domain techniques proved to be effective for CE analysis in complex systems [5], [6].…”

Section: Introductionmentioning

confidence: 99%

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Black-Box Modeling of EMI Filters for Frequency and Time-Domain Simulations

Negri

Spadacini

Grassi

et al. 2022

IEEE Trans. Electromagn. Compat.

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A procedure for the derivation of a black-box model of electromagnetic interference (EMI) filters is proposed and discussed. The modeling approach is assessed by resorting to a real EMI filter. The equivalent circuit of the filter is directly obtained from a rational approximation of the scattering-parameter matrix measured at the filter ports. Therefore, the modeling procedure does not require any information on the internal structure of the filter (e.g., components, electrical/magnetic properties of the involved materials, connections leads, etc.). The circuit model is compatible with SPICE solvers and can be used for the prediction of conducted emissions in both the frequency and time domain. Specifically, the proposed modeling approach allows time-domain simulation and performance analysis of EMI filters in combination with power-electronic equipment (i.e. non-linear, time-variant circuits).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Black-Box Modeling of EMI Filters for Frequency and Time-Domain Simulations

Negri

Spadacini

Grassi

et al. 2022

IEEE Trans. Electromagn. Compat.

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“…For the sake of modelling, the behavioral model in [25,26] is exploited for the dc-dc converter. Accordingly, the active part of the converter is represented by means of two current sources (connected between each wire in the power line and ground), whose frequency spectra are exacted from measurement data.…”

Section: Description and Modelling Of The Test Setupmentioning

confidence: 99%

“…Moreover, the passive part of the converter is modelled by a 2 × 2 matrix of admittances, whose frequency response (not reported here for the sake of brevity) was retrieved from the scattering parameters measured at the input pins of the dc-dc converter switched off. : Frequency spectra of the equivalent current sources S1 , S2 modelling the active part of the dc-dc converter [25,26].…”

Section: Description and Modelling Of The Test Setupmentioning

confidence: 99%

A Possibilistic Approach for the Prediction of the Risk of Interference between Power and Signal Lines Onboard Satellites

Toscani

Grassi

Spadacini

et al. 2018

Mathematical Problems in Engineering

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This work presents a hybrid random/fuzzy approach for uncertainty quantification in electromagnetic modelling, which combines probability and possibility theory in order to properly account for both aleatory and epistemic uncertainty, respectively. In particular, a typical intrasystem electromagnetic-compatibility problem in aerospace applications is considered, where some parameters are affected by fabrication tolerances or other kinds of randomness (aleatory uncertainty) and others are inherently deterministic but unknown due to human's lack of knowledge (epistemic uncertainty). Namely, a differential-signal line in a satellite is subject to crosstalk due to a nearby dc power line carrying conducted emissions generated by a dc-dc converter in a wide frequency range (up to 100 MHz). The nonideal features of the signal line (e.g., weak unbalance of terminal loads) are treated as random variables (RVs), whereas the mutual position of signal and power line is characterized by possibility theory through suitable fuzzy variables. Such a hybrid approach allows deriving a general and exhaustive description of uncertainty of the target variable of interest, that is, the differential noise voltage induced in the signal line. The obtained results are compared versus a conventional Monte Carlo simulation where all parameters are treated as RVs, and the advantages of the proposed approach (in terms of completeness and richness of information gained about sensitivity of results) are highlighted.

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“…Actually, the impact of long-cable effects is fundamental in CE analysis of inverter-fed motor systems [5,[10][11][12], as well as other powerelectronics devices such as dc/dc converters in space satellites [19,20]. A quantitative estimation of the impact of the length of the dc power bus can be exemplified here by exploiting the proposed model.To this aim, the length of the dc power bus in Fig.…”

Section: Impact Of the Length Of The DC Power Busmentioning

confidence: 99%

Modelling and Simulation of Conducted Emissions in the Powertrain of Electric Vehicles

Spadacini¹,

Grassi²,

Pignari³

2016

PIER B

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Abstract-In the general framework of intelligent transportation, the increasing use of informationcommunication technology in full or hybrid electric vehicles requires careful assessment of electromagnetic compatibility, with specific reference to the conducted emissions (CE) generated by the inverter in a broad frequency range (10 kHz-100 MHz). To this aim, this work reports a modelling approach for the prediction of CE in electric powertrains, which is based on circuit representation of each single subsystem, that is, the battery, the inverter, the three-phase synchronous motor, and the power buses composed of shielded cables. The proposed models are able to represent both low-frequency functional aspects and high-frequency parasitic effects of paramount importance for CE analysis, and can be implemented into a Simulation-Programme-with-Integrated-Circuit-Emphasis (SPICE) solver. The proposed modelling approach is exploited to simulate virtual CE measurements according to international standard CISPR 25, and to investigate the impact of setup features, including grounding connections of shields, the propagation of CE in electrically long power buses, the operating point (power, torque, speed) of the motor-drive system.

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Prediction of Conducted Emissions in Satellite Power Buses

Cited by 17 publications

References 5 publications

Black-Box Modeling of EMI Filters for Frequency and Time-Domain Simulations

Black-Box Modeling of EMI Filters for Frequency and Time-Domain Simulations

A Possibilistic Approach for the Prediction of the Risk of Interference between Power and Signal Lines Onboard Satellites

Modelling and Simulation of Conducted Emissions in the Powertrain of Electric Vehicles

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