Time-Domain Characterization of RF Sources for the Design of Noise Suppression Filters

Rebholz, H.; Tenbohlen, Stefan; Köhler, Wolfgang R.

doi:10.1109/temc.2009.2031909

Cited by 21 publications

(13 citation statements)

References 14 publications

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“…However, the EMI from the drive motor system under varying load conditions for EVs is different from that of a conventional industrial motor with no load or invariant load conditions. Previous studies on EMI emissions from vehicle components are based on the measurements specified in the EMC standard CISPR25 (International Special Committee on Radio Interference 25) [15,16], which are implemented for low voltage components in EVs and not suitable for the high voltage applications in EVs (e.g., motor system, charging system), so we cannot correctly predict the EMI emissions from the high voltage motor system in EVs due to the fact few EMC laboratories have the dynamometer needed to study EVs under varying loading conditions, so the present study on the EMI mechanism and propagation path of the motor system is much less than that on the total EMC performance of EVs [17,18]. The EMI emissions from the high voltage cables of the AC motor drive system of EVs under load condition have not been considered in previous works.…”

Section: Literature Reviewmentioning

confidence: 99%

The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles

et al. 2016

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Abstract:The large dv/dt and di/dt outputs of power devices in DC-fed motor drive systems in electric vehicles (EVs) always introduce conducted electromagnetic interference (EMI) emissions and may lead to motor drive system energy transmission losses. The effect of distributed parameters on conducted EMI from the DC-fed high voltage motor drive systems in EVs is studied. A complete test for conducted EMI from the direct current fed(DC-fed) alternating current (AC) motor drive system in an electric vehicle (EV) under load conditions is set up to measure the conducted EMI of high voltage DC cables and the EMI noise peaks due to resonances in a frequency range of 150 kHz-108 MHz. The distributed parameters of the motor can induce bearing currents under low frequency sine wave operation. However the impedance of the distributed parameters of the motor is very high at resonance frequencies of 500 kHz and 30 MHz, and the effect of the bearing current can be ignored, so the research mainly focuses on the distributed parameters in inverters and cables at 500 kHz and 30 MHz, not the effect of distributed parameters of the motor on resonances. The corresponding equivalent circuits for differential mode (DM) and common mode (CM) EMI at resonance frequencies of 500 kHz and 30 MHz are established to determine the EMI propagation paths and analyze the effect of distributed parameters on conducted EMI. The dominant distributed parameters of elements responsible for the appearing resonances at 500 kHz and 30 MHz are determined. The effect of the dominant distributed parameters on conducted EMI are presented and verified by simulation and experiment. The conduced voltage at frequencies from 150 kHz to 108 MHz can be mitigated to below the limit level-3 of CISPR25 by changing the dominant distributed parameters.

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Section: Literature Reviewmentioning

confidence: 99%

The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles

et al. 2016

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“…The result: initial inductance L i = 3.9 μH and μ i ≈ 1780. The normalized permeability is calculated according to (5) and is shown in Fig. 8.…”

Section: A Validation Of the Ferrite Modelmentioning

confidence: 99%

“…Thus, the real insertion loss of a filter may not be predicted without the estimation of the CM and DM impedances of the noise source. This estimation may be realized by measurements in the offline state [3], by measurements of the impedance response for an active unit via a decoupling network [4] or using the time-domain measurements of the emission voltages [5]. All these methods provide an equivalent frequency-dependent impedance for the CM and DM sources, which may be applied for the filter design.…”

Section: Introductionmentioning

confidence: 99%

Broad-Band Modeling of Passive Power-Supply Filter Structures

Mantzke

Kochetov

2013

IEEE Trans. Electromagn. Compat.

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This paper shows an approach for the broad-band modeling of passive power-supply filter structures, which may be applied to the virtual filter design. The most important advantage of this technique is the possibility of considering the parasitic and functional behavior of a power-supply filter in the same simulation. The approach provides a 3-D model of the filter structure based on a differential field solver. Moreover, the passive components are approximated by combined behavioral-physical 3-D models, which allow the simulation of this structure and the physical volumetric modeling of the current distribution in the components. Thus, the functional behavior of the filter is modeled taking into account all the high-frequency effects (equivalent serial inductance, equivalent serial resistance, parasitic capacitances, punch-grid issues, couplings between components, couplings between interconnections, losses in the plastic environment, etc.). This paper provides a validation of the approach by measurements of a simplified hardware sample and of an industrial filter sample as well.Index Terms-Full-wave modeling, modeling passive components, power-supply filters, virtual design of power-supply filters.

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“…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%

“…From an industrial perspective, simulation of CE demonstrates great potential when targeted to design or assessment of the optimal EMI filter [5]. Unfortunately, as far as the evaluation of commercial EMI filters is concerned, the input information required to accomplish that task is hardly made available by the manufacturers.…”

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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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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Time-Domain Characterization of RF Sources for the Design of Noise Suppression Filters

Cited by 21 publications

References 14 publications

The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles

The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles

Broad-Band Modeling of Passive Power-Supply Filter Structures

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

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