Analytical Wideband Model of a Common-Mode Choke

Kovačić, Marinko; Hanić, Zlatko; Stipetić, Stjepan; Krishnamurthy, S.; Žarko, Damir

doi:10.1109/tpel.2011.2182060

Cited by 92 publications

(46 citation statements)

References 23 publications

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“…C tt has only a considerable influence on the resonant behavior if d tt is small. In this case the approach of [1] leads to good results. Hence, the dependency of C tt on d tt and d tc will not be investigated in detail in this study.…”

Section: Defining Parasitic Capacitancesmentioning

confidence: 93%

“…While an exact analytical model is not known up to now, different attempts were made to create methods to approximate the coupling between conductors caused by fast changing electric fields. In [1] an algorithm for analytical calculation of two important parasitic capacitances in a coil is presented. This solution is valid for tightly wound toroids but might lead to considerable errors whenever the turns are separated by more than 1/2 of the wire diameter, especially when a low number of turns (< 15) is used.…”

Section: Introductionmentioning

confidence: 99%

“…This paper describes the capacitive coupling effects in a single layer choke with a conductive core using three important parasitic capacitances. Furthermore, an analytical algorithm is presented, advancing the approach of [1]. This method offers the advantage of calculating the important parasitic capacitances with high precision for a wide range of core geometries and winding setups.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical determination of the first resonant frequency of differential mode chokes by detailed analysis of parasitic capacitances

Middelstädt

Skibin

Döbbelin

et al. 2014

2014 16th European Conference on Power Electronics and Applications

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AcknowledgmentsThe authors would like to thank ABB Switzerland corporate research center in Baden/Daettwill for initiating and supporting this work. AbstractIn this paper the important parasitic capacitances of chokes are analyzed and defined. This work contributes to a general understanding of capacitive coupling in wound elements. Based on calculations from previous studies a more precise, wide range algorithm is proposed to calculate these parasitic capacitances of toroidal chokes. With these results a method is presented to analytically predict the first resonant frequency of a differential mode choke with high precision. Furthermore, the retrieved capacitance network offers the possibility to forecast resonant frequencies of higher order with high accuracy avoiding the need of measurement or field simulation.

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Section: Defining Parasitic Capacitancesmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analytical determination of the first resonant frequency of differential mode chokes by detailed analysis of parasitic capacitances

Middelstädt

Skibin

Döbbelin

et al. 2014

2014 16th European Conference on Power Electronics and Applications

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show abstract

“…In order to satisfy the standard limits, electronic engineers must propose reasonable noise rejection methods. Insertion of filters [4][5][6][7] is a common method which can reduce the conducted EMI for comfort and regulations. Separation of conducted differential-mode (DM) and common-mode (CM) noise is very useful for noise diagnosis [8,9] and electromagnetic interference (EMI) filter design in power electronics applications.…”

Section: Introductionmentioning

confidence: 99%

A Novel Measurement System for the Common-Mode- And Differential-Mode- Conducted Electromagnetic Interference

Feng¹,

Liao²,

Xiong³

2014

PIER Letters

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Abstract-Electromagnetic Interference (EMI) test is an important part for the manufacture of power electronic equipment, which helps us not only analyze the noise characteristics of the Equipment Under Test (EUT) but also design EMI filters. The previous separation method for the Common Mode (CM) and Differential Mode (DM) noise was time consuming or costly. In this paper, a novel measurement system for CM and DM conducted EMI is described showing a good performance. The system consists of two parts, part 1: getting CM noise or DM noise through a current probe; part 2: obtaining another mode noise from a software-based method. A 150 w switch mode power supply is measured to verify the proposed measurement system. The noise spectra of CM and DM signal is shown, and the results obtained by software program are compared with those obtained from a current probe measurement showing a good concordance in terms of peak value.

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“…The first category refers to numerical models where a system of physical equations is constructed and solved using the geometry and material information of a choke [7]- [18]. Physical methods need full geometry and electrical parameter description of windings and ferrite core, and are time consuming [6].…”

mentioning

confidence: 99%