EP1783788A3 - Transformer with current sensing means - Google Patents

Transformer with current sensing means Download PDF

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Publication number
EP1783788A3
EP1783788A3 EP06405455A EP06405455A EP1783788A3 EP 1783788 A3 EP1783788 A3 EP 1783788A3 EP 06405455 A EP06405455 A EP 06405455A EP 06405455 A EP06405455 A EP 06405455A EP 1783788 A3 EP1783788 A3 EP 1783788A3
Authority
EP
European Patent Office
Prior art keywords
transformer
current transformer
secondary windings
power
turn
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06405455A
Other languages
German (de)
French (fr)
Other versions
EP1783788A2 (en
Inventor
Nigel Springett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DET International Holding Ltd
Original Assignee
DET International Holding Ltd
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 DET International Holding Ltd filed Critical DET International Holding Ltd
Priority to EP06405455A priority Critical patent/EP1783788A3/en
Publication of EP1783788A2 publication Critical patent/EP1783788A2/en
Publication of EP1783788A3 publication Critical patent/EP1783788A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

A power transformer (131) for a power converter includes a magnetic core, a primary winding (132) and two serially connected secondary windings (133, 134). In order to sense the output current to generate therefrom a control signal for controlling a switching of the synchronous rectifiers of the power converter (131), the power transformer (131) includes an integrated current transformer (160) with a ring-type core (164) and a secondary winding (163). The primary windings of the current transformer (160) are formed by the end portions (133.3, 134.3) of the secondary windings (133, 134) that are fed through the ring-type core (164). Accordingly, the end portions (133.3, 134.3) form a turn of the secondary windings (133, 134) of the main transformer (131) as well as a turn of the primary winding of the current transformer (160). Accordingly, only one current transformer is needed, which means lower costs and less space required, and the losses due to the wiring to and from the current transformer can be eliminated.
EP06405455A 2005-11-02 2006-10-26 Transformer with current sensing means Withdrawn EP1783788A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06405455A EP1783788A3 (en) 2005-11-02 2006-10-26 Transformer with current sensing means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05405619 2005-11-02
EP06405455A EP1783788A3 (en) 2005-11-02 2006-10-26 Transformer with current sensing means

Publications (2)

Publication Number Publication Date
EP1783788A2 EP1783788A2 (en) 2007-05-09
EP1783788A3 true EP1783788A3 (en) 2009-03-25

Family

ID=37705772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405455A Withdrawn EP1783788A3 (en) 2005-11-02 2006-10-26 Transformer with current sensing means

Country Status (1)

Country Link
EP (1) EP1783788A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684506B (en) * 2012-05-09 2014-12-24 广州金升阳科技有限公司 Method for improving working efficiency of self-excited push-pull converter and self-excited push-pull converter

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101997416B (en) * 2009-08-11 2013-06-19 台达电子工业股份有限公司 Power module and circuit board assembly thereof
GB2475262B (en) * 2009-11-11 2014-07-23 E2V Tech Uk Ltd Isolation transformer for a cathode heater supply for a microwave source
EP2493063B1 (en) 2011-02-24 2014-07-09 DET International Holding Limited Multiple use of a current transformer
CN102636668A (en) * 2012-05-10 2012-08-15 山东电力集团公司济南供电公司 Clamping type sensor
US9171667B2 (en) 2013-03-27 2015-10-27 General Electric Company Magnetic device having integrated current sensing element and methods of assembling same
US20230017789A1 (en) * 2019-11-27 2023-01-19 Differential Power, S.L. Electrical power converter with segmented windings
EP3982381A1 (en) * 2020-10-06 2022-04-13 Hitachi Energy Switzerland AG Power transformer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999743A (en) * 1989-09-27 1991-03-12 At&T Bell Laboratories Transformer with included current sensing element
EP1172924A2 (en) * 2000-07-11 2002-01-16 Sony Corporation Switching power supply having an improved power factor by voltage feedback
WO2002041483A2 (en) * 2000-11-15 2002-05-23 Peco Ii, Inc. Apparatus and method for measuring dc load current of a switching power supply
US20050068792A1 (en) * 2003-09-30 2005-03-31 Masayuki Yasumura Switching power supply circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999743A (en) * 1989-09-27 1991-03-12 At&T Bell Laboratories Transformer with included current sensing element
EP1172924A2 (en) * 2000-07-11 2002-01-16 Sony Corporation Switching power supply having an improved power factor by voltage feedback
WO2002041483A2 (en) * 2000-11-15 2002-05-23 Peco Ii, Inc. Apparatus and method for measuring dc load current of a switching power supply
US20050068792A1 (en) * 2003-09-30 2005-03-31 Masayuki Yasumura Switching power supply circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684506B (en) * 2012-05-09 2014-12-24 广州金升阳科技有限公司 Method for improving working efficiency of self-excited push-pull converter and self-excited push-pull converter

Also Published As

Publication number Publication date
EP1783788A2 (en) 2007-05-09

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