Design of Inductor Winding Capacitance Cancellation for EMI Suppression

Author

Shuo Wang ; Lee, Fred C. ; van Wyk, J.D.

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA

fYear

2006

fDate

18-22 June 2006

Firstpage

1

Lastpage

7

Abstract

In this paper, the parasitics in both DM and CM inductors are first discussed. The methods for both DM and CM inductor winding capacitance cancellation are then proposed. Prototypes are designed and tested, using network analyzer. Finally, the prototypes are applied to practical power converters and EMI is measured. Both small signal measurement and practical EMI measurement prove that the proposed methods can efficiently reduce the effects of winding capacitance and therefore improve the inductor´s filtering performance

Keywords

capacitance; design engineering; electromagnetic interference; inductors; interference suppression; windings; CM inductors; DM inductors; EMI measurement; EMI suppression; common mode inductors; differential mode inductors; inductor winding; network analyzer; power converters; small signal measurement; winding capacitance cancellation; Delta modulation; Electromagnetic interference; Filtering theory; Frequency measurement; Inductors; Low pass filters; Noise cancellation; Parasitic capacitance; Power electronics; Prototypes; EMI noise; electromagnetic interference (EMI) filter; winding capacitance; winding capacitance cancellation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

Conference_Location

Jeju

ISSN

0275-9306

Print_ISBN

0-7803-9716-9

Type

conf

DOI

10.1109/PESC.2006.1712184

Filename

1712184