Modeling of Connections Taking Into Account Return Plane: Application to EMI Modeling for Railway

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.

[1]  Willy Legros,et al.  A coupling between electric circuits and 2D magnetic field modeling , 1993 .

[2]  J. Roudet,et al.  PEEC Method Dedicated to the Design of Electrical Systems , 2004 .

[3]  K. Al-Haddad,et al.  A Single Phase Multilevel Hybrid Power Filter for Electrified Railway Applications , 2006, 2006 IEEE International Symposium on Industrial Electronics.

[4]  J. R. Carson.  Wave propagation in overhead wires with ground return , 1926 .

[5]  Zhaoan Wang,et al.  Analysis of Insertion Loss and Impedance Compatibility of Hybrid EMI Filter Based on Equivalent Circuit Model , 2007, IEEE Transactions on Industrial Electronics.

[6]  A. Ruehli.  Equivalent Circuit Models for Three-Dimensional Multiconductor Systems , 1974 .

[7]  J. Roudet,et al.  Busbar Design: How to Spare Nanohenries ? , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[8]  A. E. Ruehii.  Inductance Calculations in a Complex Integrated Circuit Environment , 2002 .

[9]  James Roudet,et al.  Conducted and radiated EMI characterisation of power electronics converter , 1997, ISIE '97 Proceeding of the IEEE International Symposium on Industrial Electronics.

[10]  Fred C. Lee,et al.  Effects of Interactions Between Filter Parasitics and Power Interconnects on EMI Filter Performance , 2007, IEEE Transactions on Industrial Electronics.

[11]  T. Sarkar,et al.  Analysis of Multiconductor Transmission Lines , 1988, 31st ARFTG Conference Digest.

[12]  T. Noda,et al.  A double logarithmic approximation of Carson's ground-return impedance , 2006, IEEE Transactions on Power Delivery.

[13]  A. Deri,et al.  The Complex Ground Return Plane a Simplified Model for Homogeneous and Multi-Layer Earth Return , 1981, IEEE Transactions on Power Apparatus and Systems.

[14]  J. Roudet,et al.  Layout techniques for reduction of common mode current in static converters , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.