DocumentCode :
2457938
Title :
A practical method for achieving inductance cancellation in filter capacitors
Author :
Spiazzi, G. ; Buso, S.
Author_Institution :
Dept. of Inf. Eng., Univ. of Padova, Padova
fYear :
2008
fDate :
15-19 June 2008
Firstpage :
885
Lastpage :
890
Abstract :
Parasitic elements hidden into passive components and added by PCB tracks make the design of EMI filters a difficult task. Gaining control of such parasitic components can enhance the overall filter performance as well as improve the accuracy of the final attenuation prediction. In this paper, a practical method for achieving inductance cancellation in filter capacitors featuring high flexibility and, at the same time, high repeatability is proposed. Thanks to the complete shielding of the coreless coupled windings the cancellation effect is not affected by ground plane proximity, providing constant equivalent parameter values. Moreover, the shield can be helpful to reduce the mutual coupling between different components of the same filter, thus enhancing the overall filter attenuation. The effectiveness of the proposed approach is verified by extensive experimental tests.
Keywords :
capacitors; electromagnetic interference; filters; printed circuits; EMI filters; PCB tracks; coreless coupled windings; filter attenuation; filter capacitors; ground plane proximity; inductance cancellation; parasitic elements; Attenuation; Capacitors; Coupling circuits; Inductance; Inductors; Information filtering; Information filters; Magnetic separation; Mutual coupling; Passive filters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 2008. PESC 2008. IEEE
Conference_Location :
Rhodes
ISSN :
0275-9306
Print_ISBN :
978-1-4244-1667-7
Electronic_ISBN :
0275-9306
Type :
conf
DOI :
10.1109/PESC.2008.4592041
Filename :
4592041
Link To Document :
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