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TWI265669B - Filter for an electrical power system, method for reducing EMI in an electrical power circuit with an active EMI filter, and active EMI filter - Google Patents

Filter for an electrical power system, method for reducing EMI in an electrical power circuit with an active EMI filter, and active EMI filter

Info

Publication number
TWI265669B
TWI265669B TW93115942A TW93115942A TWI265669B TW I265669 B TWI265669 B TW I265669B TW 93115942 A TW93115942 A TW 93115942A TW 93115942 A TW93115942 A TW 93115942A TW I265669 B TWI265669 B TW I265669B
Authority
TW
Taiwan
Prior art keywords
filter
electrical power
emi
active
emi filter
Prior art date
Application number
TW93115942A
Other languages
Chinese (zh)
Other versions
TW200511696A (en
Inventor
Jun Honda
Original Assignee
Int Rectifier Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Int Rectifier Corp filed Critical Int Rectifier Corp
Publication of TW200511696A publication Critical patent/TW200511696A/en
Application granted granted Critical
Publication of TWI265669B publication Critical patent/TWI265669B/en

Links

Landscapes

  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

An active EMI filter senses current in a ground line as a voltage across a capacitor coupled to the ground line. The EMI filter senses common mode voltage and determines a difference between the common mode voltage and noise to provide an output to the ground line to reduce the difference.
TW93115942A 2003-06-04 2004-06-03 Filter for an electrical power system, method for reducing EMI in an electrical power circuit with an active EMI filter, and active EMI filter TWI265669B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47626303P 2003-06-04 2003-06-04

Publications (2)

Publication Number Publication Date
TW200511696A TW200511696A (en) 2005-03-16
TWI265669B true TWI265669B (en) 2006-11-01

Family

ID=38122283

Family Applications (1)

Application Number Title Priority Date Filing Date
TW93115942A TWI265669B (en) 2003-06-04 2004-06-03 Filter for an electrical power system, method for reducing EMI in an electrical power circuit with an active EMI filter, and active EMI filter

Country Status (1)

Country Link
TW (1) TWI265669B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI383577B (en) * 2007-01-22 2013-01-21 Johnson Controls Tech Co Common mode and differential mode filter for variable speed drive and chiller system having input filter for filtering common mode and differential mode currents

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12034367B2 (en) * 2021-06-28 2024-07-09 Richtek Technology Corporation Switching power converter and active EMI filter circuit thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI383577B (en) * 2007-01-22 2013-01-21 Johnson Controls Tech Co Common mode and differential mode filter for variable speed drive and chiller system having input filter for filtering common mode and differential mode currents

Also Published As

Publication number Publication date
TW200511696A (en) 2005-03-16

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees