Separation of common and differential mode conducted emission: Power combiner/splitters

Michael A. E. Andersen; Dennis Nielsen; Ole Cornelius Thomsen; Michael A. E. Andersen

Separation of common and differential mode conducted emission: Power combiner/splitters

Michael A. E. Andersen, Dennis Nielsen, Ole Cornelius Thomsen, Michael A. E. Andersen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

3977 Downloads (Pure)

Abstract

A conducted emission measurement contains a common and a differential mode component. Accurate separation of these two components is critical, when designing the input filter of a switch mode power supply. Many techniques exists for performing such separation. Some authors suggested the use
of wideband transformers, while other prefer current probes. In this paper the use of commercial power splitters/combiners as noise separators are considered. The performance of the noise separators are analyzed and validated based on scattering parameters (S-parameters). Impedance and rejection ratios (common and differential mode) are shown. The results based on S-parameters are used to propose a complete noise separator design. This separator is verified through experimental measurements. Finally an example on how to use the separator, when measuring conducted noise is given.

Original language	English
Title of host publication	Proceedings of the International Conference on Renewable Energies and Power Quality
Number of pages	6
Publication date	2012
ISBN (Print)	978-84-615-6648-8
Publication status	Published - 2012
Event	The International Conference on Renewable Energies and Power Quality (ICREPQ'12) - Santiago de Compostela , Spain Duration: 28 Mar 2012 → 30 Mar 2012

Conference

Conference	The International Conference on Renewable Energies and Power Quality (ICREPQ'12)
Country/Territory	Spain
City	Santiago de Compostela
Period	28/03/2012 → 30/03/2012

Keywords

EMI
Conducted emission
Power combiners/ splitters
Differential and Common mode

Access to Document

440-nielsen.pdf

OpenUrl availability

Full text

Cite this

@inproceedings{fd7d2888616b4fc1a5b2eb6d835726fa,

title = "Separation of common and differential mode conducted emission: Power combiner/splitters",

abstract = "A conducted emission measurement contains a common and a differential mode component. Accurate separation of these two components is critical, when designing the input filter of a switch mode power supply. Many techniques exists for performing such separation. Some authors suggested the useof wideband transformers, while other prefer current probes. In this paper the use of commercial power splitters/combiners as noise separators are considered. The performance of the noise separators are analyzed and validated based on scattering parameters (S-parameters). Impedance and rejection ratios (common and differential mode) are shown. The results based on S-parameters are used to propose a complete noise separator design. This separator is verified through experimental measurements. Finally an example on how to use the separator, when measuring conducted noise is given.",

keywords = "EMI, Conducted emission, Power combiners/ splitters, Differential and Common mode",

author = "Andersen, {Michael A. E.} and Dennis Nielsen and Thomsen, {Ole Cornelius} and Andersen, {Michael A. E.}",

year = "2012",

language = "English",

isbn = "978-84-615-6648-8",

booktitle = "Proceedings of the International Conference on Renewable Energies and Power Quality",

note = "The International Conference on Renewable Energies and Power Quality (ICREPQ'12), ICREPQ'12 ; Conference date: 28-03-2012 Through 30-03-2012",

}

Separation of common and differential mode conducted emission: Power combiner/splitters. / Andersen, Michael A. E.; Nielsen, Dennis; Thomsen, Ole Cornelius et al.
Proceedings of the International Conference on Renewable Energies and Power Quality . 2012.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Separation of common and differential mode conducted emission: Power combiner/splitters

AU - Andersen, Michael A. E.

AU - Nielsen, Dennis

AU - Thomsen, Ole Cornelius

AU - Andersen, Michael A. E.

PY - 2012

Y1 - 2012

N2 - A conducted emission measurement contains a common and a differential mode component. Accurate separation of these two components is critical, when designing the input filter of a switch mode power supply. Many techniques exists for performing such separation. Some authors suggested the useof wideband transformers, while other prefer current probes. In this paper the use of commercial power splitters/combiners as noise separators are considered. The performance of the noise separators are analyzed and validated based on scattering parameters (S-parameters). Impedance and rejection ratios (common and differential mode) are shown. The results based on S-parameters are used to propose a complete noise separator design. This separator is verified through experimental measurements. Finally an example on how to use the separator, when measuring conducted noise is given.

AB - A conducted emission measurement contains a common and a differential mode component. Accurate separation of these two components is critical, when designing the input filter of a switch mode power supply. Many techniques exists for performing such separation. Some authors suggested the useof wideband transformers, while other prefer current probes. In this paper the use of commercial power splitters/combiners as noise separators are considered. The performance of the noise separators are analyzed and validated based on scattering parameters (S-parameters). Impedance and rejection ratios (common and differential mode) are shown. The results based on S-parameters are used to propose a complete noise separator design. This separator is verified through experimental measurements. Finally an example on how to use the separator, when measuring conducted noise is given.

KW - EMI

KW - Conducted emission

KW - Power combiners/ splitters

KW - Differential and Common mode

M3 - Article in proceedings

SN - 978-84-615-6648-8

BT - Proceedings of the International Conference on Renewable Energies and Power Quality

T2 - The International Conference on Renewable Energies and Power Quality (ICREPQ'12)

Y2 - 28 March 2012 through 30 March 2012

ER -

Separation of common and differential mode conducted emission: Power combiner/splitters

Abstract

Conference

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this