Layout techniques for reduction of common mode current in static converters

Aimé, Jérémie; Roudet, James; Vollaire, Christian; Baudesson, Philippe; Ecrabey, Jacques

doi:10.1109/ias.2006.256862

Cited by 13 publications

(20 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained waveforms are reported in Fig. 13, where they are successfully compared with the measurements performed on a real mock-up of the converter [13]. It is worth to note that the waveform oscillations are correctly modeled thanks to the inclusion of the parasitic capacitances into the equivalent circuit.…”

Section: E Electric Circuit and Time-domain Waveformsmentioning

confidence: 95%

Electromagnetic simulation of power modules via adapted modelling tools

Vialardi

Clavel

Chadebec

et al. 2010

Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010

View full text Add to dashboard Cite

Some modelling methods and associated tools are presented in this paper to efficiently and accurately simulate the electromagnetic behaviour of power electronic structures. Moreover, as engineers have to face new challenges, the synergy between simulation tools is illustrated as a possible solution for addressing this "multiphysic" topic. The article is also pictured of several application examples where obtained results are discussed and compared to measurements.

show abstract

Section: E Electric Circuit and Time-domain Waveformsmentioning

confidence: 95%

Electromagnetic simulation of power modules via adapted modelling tools

Vialardi

Clavel

Chadebec

et al. 2010

Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010

View full text Add to dashboard Cite

show abstract

“…Conducted band studies show that the spectrum shapes are closely linked to the driver configurations. Indeed, EMC perturbations of a static converter are due to the differential and common mode currents [10,14]. The latter are generated by the floating potential tracks with their stray capacitances referenced to the ground planes during the switching stages (Voltage driven mechanism) and by the variation of ground plane voltage due to the stray inductances (Current driven mechanism).…”

Section: Emc Study Of Static Convertersmentioning

confidence: 99%

“…Therefore, it can be said that the far field is mainly correlated to the common mode. In conclusion, to reduce or control the far field emissions, it is necessary to control the common mode generation [10]. It is thus essential to preserve the floating potential tracks from electromagnetic disturbances.…”

Section: Emc Study Of Static Convertersmentioning

confidence: 99%

See 1 more Smart Citation

Far Field Extrapolation from Near Field Interactions and Shielding Influence Investigations Based on a FE-PEEC Coupling Method

et al. 2013

Self Cite

View full text Add to dashboard Cite

Regarding standards, it is well established that common mode currents are the main source of far field emitted by variable frequency drive (VFD)-cable-motor associations. These currents are generated by the combination of floating potentials with stray capacitances between these floating potential tracks and the mechanical parts connected to the earth (the heatsink or cables are usual examples). Nowadays, due to frequency and power increases, the systematic compliance to EMC (ElectroMagnetic Compatibility) becomes increasingly difficult and costly for industrials. As a consequence, there is a well-identified need to investigate practical and low cost solutions to reduce the radiated fields of VFD-cable-motor associations. A well-adapted solution is the shielding of wound components well known as the major source of near magnetic field. However, this solution is not convenient, it is expensive and may not be efficient regarding far field reduction. Optimizing the components placement could be a better and cheaper solution. As a consequence, dedicated tools have to be developed to efficiently investigate not easy comprehendible phenomena and finally to control EMC disturbances using component placement, layout geometry, shielding design if needed. However, none of the modeling methods usually used in industry complies with large frequency range and far field models including magnetic materials, multilayer PCBs, and shielding. The contribution of this paper is to show that alternatives regarding modeling solutions exist and can be used to get in-deep analysis of such complex structures. It is shown in this paper that near field investigations can give information on far field behavior. It is illustrated by an investigation of near field interactions and shielding influence using a FE-PEEC hybrid method. The test case combining a common mode filter with the floating potentials tracks of an inverter is based on an industrial and commercialized VFD. The near field interactions between the common mode inductance and the tracks with floating potentials are revealed. Then, the influence of the common mode inductance shielding is analyzed

show abstract

“…Then, the following stages of the modeling consist of evaluating the values of electrical components using analytical formulations and solving the Kirchoff equations to obtain the currents, the losses for instance. This method has been widely used in order to evaluate the electromagnetic interference (EMI) performance of power converters [3], [4], thanks to the development of the software InCa3D. 1 For high frequencies, the PEEC approach is adapted for transmission line purposes, which is called multiconductor transmission lines (MTL) [5].…”

Section: Modeling Of Connectionsmentioning

confidence: 99%

Modeling of connections taking into account return plane: Application to EMI modeling for railway

Clavel

Roudet

Chevalier

et al. 2007

2007 IEEE International Symposium on Industrial Electronics

Self Cite

View full text Add to dashboard Cite

Abstract-The modeling of electrical characteristics of connections is an important stage of the design phase of a structure. Indeed, they have an impact on the current density distributions inside conductors as well as on the current distributions when several components are connected in parallel. In the case of a return plane in the studied structure as for power electronics converters or railway applications, the model of connections has to be improved in order to represent the physics better. For the first application field, the cooling system itself can be a ground plane, and for the second one, the earth has to be modeled. This paper presents different ways to take into account a return plane while modeling the electrical equivalent circuit of connections above it. It starts with the simplest one, the image method, and continues with the use of a complex skin depth result of solving the Carson integral.Index Terms-Electromagnetic interference (EMI) modeling, equivalent impedance, finite-element method (FEM), partialelement equivalent circuit (PEEC) method, railway system, transmission line modeling.

show abstract

Layout techniques for reduction of common mode current in static converters

Cited by 13 publications

References 12 publications

Electromagnetic simulation of power modules via adapted modelling tools

Electromagnetic simulation of power modules via adapted modelling tools

Far Field Extrapolation from Near Field Interactions and Shielding Influence Investigations Based on a FE-PEEC Coupling Method

Modeling of connections taking into account return plane: Application to EMI modeling for railway

Contact Info

Product

Resources

About