EEMCS

Full text available as:

PDF - Univ. of Twente only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 1872 Kb

Official URL: http://dx.doi.org/10.2174/978160805240011101010003

Abstract

The common mode inductors, or common mode chokes, are a key component of electromagnetic interference filters. Engineers usually face significant design challenges such as size, cost and weight while working with these components. To avoid the construction of several prototypes, often oversized, engineers need an analytical
method to predict performances of the filter. The analysis of the common mode inductors starts with a presentation of the different ferromagnetic materials: their properties are the cornerstone of the design of the component. Based on this study, the impedances used to characterize the choke are related to the designable parameters. The derived model shows the role of the parasitic currents to ground and the common mode impedance in the overall common mode current attenuation. A certain attenuation of differential mode current is also to be expected due to the parasitic currents of the common mode choke itself: the turn to turn capacitance and the leakage inductance. This model is
validated by measurements. Sensitivity studies provide an additional insight into the behavior of the choke by giving
an understanding on how variations of parameters, influence the final performance. The deviation calculation and the
influence of the designable parameters are addressed at the end of this chapter.

Export this item as:

• BibTeX
• XML

To request a copy of the PDF please email us request copy

To correct this item please ask your editor

Repository Staff Only: edit this item