Characterization, evaluation, and design of noise Separator for conducted EMI noise diagnosis

• Published in: IEEE transactions on power electronics Vol. 20; no. 4; pp. 974 - 982
• Main Authors: Shuo Wang, Lee, F.C., Odendaal, W.G.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-07-2005; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Capacitors; Common/differential-mode rejection ratio; common/differential-mode transmission ratio; Delta modulation; Diagnosis; Electric noise; Electrical engineering. Electrical power engineering; Electromagnetic interference; Electronics; Exact sciences and technology; Impedance measurement; line impedance stabilization network (LISN); Noise; Noise control; Noise measurement; noise separator; Particle separators; Power electronics, power supplies; Prototypes; Scattering; Scattering parameters; Separators; Signal to noise ratio; transmission line transformer; Voltage; Performance evaluation; Waveform; Prototype; Stabilization; Power electronics; Noise measurement; line impedance stabilization network (LISN); Common mode rejection rate; Diagnostic techniques; Frequency characteristic; noise separator; Experimental result; Transmission line; common/differential-mode transmission ratio; Electromagnetic interference; s parameter; Common/differential-mode rejection ratio; Transmission rate; scattering parameters; Impedance; Separator circuit; transmission line transformer
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2005.850978

In this paper, at first, three requirements for noise separators are specified and the disadvantages of traditional evaluation methods are pointed out. Noise separators are then characterized using scattering parameters (S-parameters). Existing noise separators are evaluated according to the specified requirements. Finally a noise separator is proposed with parasitic controlled design and the prototype is evaluated using the proposed method. An electromagnetic interference (EMI) measurement shows that the proposed noise separator can effectively separate noise and that it is easy to use.