FR2345798A1 - POWER SUPPLY TRANSFORMER PROVIDING A WELL DEFINED CURRENT TO DIFFERENT INSTALLATIONS OR APPLIANCES - Google Patents

POWER SUPPLY TRANSFORMER PROVIDING A WELL DEFINED CURRENT TO DIFFERENT INSTALLATIONS OR APPLIANCES

Info

Publication number
FR2345798A1
FR2345798A1 FR7708676A FR7708676A FR2345798A1 FR 2345798 A1 FR2345798 A1 FR 2345798A1 FR 7708676 A FR7708676 A FR 7708676A FR 7708676 A FR7708676 A FR 7708676A FR 2345798 A1 FR2345798 A1 FR 2345798A1
Authority
FR
France
Prior art keywords
power supply
transformer
appliances
well defined
supply transformer
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.)
Granted
Application number
FR7708676A
Other languages
French (fr)
Other versions
FR2345798B1 (en
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2345798A1 publication Critical patent/FR2345798A1/en
Application granted granted Critical
Publication of FR2345798B1 publication Critical patent/FR2345798B1/fr
Granted legal-status Critical Current

Links

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
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/04—Fixed transformers not covered by group H01F19/00 having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

In the case of the transformer which has windings which can be switched over and are intended for connection to power supplies of various voltages and at different frequencies, it is proposed in order to reduce the structural size and weight and in order to save material that the transformer be designed, in terms of iron, for the higher power supply frequency (for example 50 Hz), said transformer having switching means (25, 27) for DC-decoupling the primary winding (21) from the secondaries (22, 23) at this frequency. In the event of the transformer being connecting to a power supply at a lower frequency (for example 16<2>/3 Hz), the number of turns of the primary winding (21) is increased, by means of further switching means (24, 26), by series connection to at least one of the secondary windings (23), cancelling the DC-decoupling for this winding (23) and its load. Such transformers are suitable for railway vehicles which cross international boundaries, with respect to the overhead-wire systems which differ in the individual countries.
FR7708676A 1976-03-24 1977-03-23 POWER SUPPLY TRANSFORMER PROVIDING A WELL DEFINED CURRENT TO DIFFERENT INSTALLATIONS OR APPLIANCES Granted FR2345798A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762613110 DE2613110C2 (en) 1976-03-24 1976-03-24 Switchable transformer for connection to the common train busbar voltages in passenger coaches

Publications (2)

Publication Number Publication Date
FR2345798A1 true FR2345798A1 (en) 1977-10-21
FR2345798B1 FR2345798B1 (en) 1981-10-30

Family

ID=5973596

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708676A Granted FR2345798A1 (en) 1976-03-24 1977-03-23 POWER SUPPLY TRANSFORMER PROVIDING A WELL DEFINED CURRENT TO DIFFERENT INSTALLATIONS OR APPLIANCES

Country Status (4)

Country Link
CH (1) CH613801A5 (en)
DE (1) DE2613110C2 (en)
FR (1) FR2345798A1 (en)
IT (1) IT1080337B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033379A1 (en) * 2004-07-09 2006-02-16 Siemens Ag AC and DC circuit coupling system for use in electric locomotive has transformer connected to pantograph and connected to circuit with two four-quadrant rectifiers

Also Published As

Publication number Publication date
CH613801A5 (en) 1979-10-15
FR2345798B1 (en) 1981-10-30
IT1080337B (en) 1985-05-16
DE2613110C2 (en) 1983-03-24
DE2613110A1 (en) 1977-09-29

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Legal Events

Date Code Title Description
ST Notification of lapse