EP0374749A1 - Transformateur rotatif - Google Patents

Transformateur rotatif Download PDF

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Publication number
EP0374749A1
EP0374749A1 EP89123222A EP89123222A EP0374749A1 EP 0374749 A1 EP0374749 A1 EP 0374749A1 EP 89123222 A EP89123222 A EP 89123222A EP 89123222 A EP89123222 A EP 89123222A EP 0374749 A1 EP0374749 A1 EP 0374749A1
Authority
EP
European Patent Office
Prior art keywords
core
winding
rotary transformer
rotating
iii
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Withdrawn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
EP89123222A
Other languages
German (de)
English (en)
Inventor
Anton Ing. Grad. Schmeller
Uwe Ing. Grad. Hartmann
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic AG
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 Vogt Electronic AG filed Critical Vogt Electronic AG
Publication of EP0374749A1 publication Critical patent/EP0374749A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
    • 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
    • H01F38/18—Rotary transformers
    • 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
    • H01F38/14—Inductive couplings
    • H01F2038/143—Inductive couplings for signals

Definitions

  • the invention relates to a rotary transformer according to the preamble of patent claim 1.
  • the rotary transformer is magnetically and winding separated in two parts. One half is fixed and the other half is on the rotating side of the system. The interface inevitably creates an air gap between the two core halves.
  • electrical disadvantages have to be accepted in favor of the mechanics. This is how it works Air gap is a loose coupling, which is also influenced by the relative movement (rotation and / or stroke) and is also subject to large tolerances. For this reason, precise monitoring or control of the power required for the rotating mechanics on the fixed side is not possible.
  • the invention has for its object to provide a rotary transformer according to the preamble of claim 1, which on the one hand has a very tight coupling between the stationary and the rotating side of the system and is also characterized in that this coupling of the relative movement between these sides (rotation and / or stroke) and the mechanical tolerances between these sides is independent, so that the power required on the rotating side and any data signals required or generated there are precisely monitored and / or controlled on the stationary side of the rotary transformer can.
  • the setting of the air gap required for the controllability over the length of core sections which protrude from a base part can already be carried out in very narrow tolerance limits during the dimensioning and manufacture of the core and not, as in the known rotary transformers, with the Monthly installation of the various system parts with inevitable considerable tolerance.
  • the shear is fixed by a single part made of magnetically conductive material, such as ferrite.
  • the unavoidable relative movements of the two sides with respect to each other in the radial and axial directions, with the rotation have no influence on the air gap and in the have a closed magnetic circuit over this guided and limited magnetic flux that couples the windings of the two system sides.
  • the rotating winding (s) can be immersed in the fixed winding (s) without contact.
  • the coupling is comparable to that of a plug-in chamber system and is therefore very firm. It can be designed differently between the windings as required and is practically tolerance-free.
  • the subclaims relate to particularly advantageous embodiments of the rotary transformer according to claim 1.
  • the rotary transformer according to FIG. 1 has a fixed primary side and a Se rotating opposite it secondary side on.
  • the fixed primary side includes a one-piece core (mono core) 1, two primary windings WI and W II and an electrical regulating and control device (SPMS) 2 for supplying the primary windings WI and W II with high-frequency energy, the frequency of which is in the range of about 10- 100 kHz or more and which can be controlled and regulated with high precision.
  • the regulating and control device could also be designed in a manner not shown in such a way that it transmits electrical data signals formed in it or supplied to it by other devices to the secondary side and / or receives data signals formed there for processing or forwarding.
  • the core 1 is bell-shaped in the embodiment according to FIG. 1 and has a base section 1a, from which a central, cylindrical section 1b and an annular section 1c projecting coaxially at a distance from it protrude.
  • the central protruding section 1b is immediately surrounded by the primary windings WI and W II.
  • One of these is pushed onto the cylindrical projecting section 1b, the other at a distance therefrom inserted into the annular projecting section 1c, so that there is a free annular space between the primary windings WI and W II.
  • the protruding sections 1b and 1c are considerably longer than the length occupied by the windings W IW III and form an air gap 3 of precisely defined width beyond these windings in the direction perpendicular to the protruding sections 1b and 1c.
  • This air gap 3 closes the magnetic circuit interlinked with the primary windings WI and W II outside of them in such a way that the magnetic field, as indicated in FIG. 1 by the field lines drawn in, practically does not penetrate outwards from the core 1, which is shown in FIG. 1 evident che special chamfer 1d on the outside at the free end of the projecting section 1c is still favored.
  • the rotating secondary side includes a support 5 which is rotatably mounted with respect to the core 1 about its central axis, which forms the axis of rotation 4, and, fixedly arranged thereon, an electrical consumer device 6.
  • an electrical consumer device 6 Although only a very simple consumer device is shown as an example in the drawing, it could be this can in principle be a circuit of various types, which requires electrical energy for operation, but can also receive and process data, as well as form and deliver it.
  • the consumer device 6 consists of a secondary winding W III and an electrical consumer circuit 7 connected to it.
  • the secondary winding W III surrounds a cup-shaped winding support 8 fastened coaxially to the axis of rotation 4 on the support 5 at its free end.
  • the winding support 8 is immersed in the free space between the primary windings WI and W II and keeps the secondary winding W III between these primary windings at a distance from each other, that is to say in a contactless manner, in an arrangement nested one above the other, comparable to that of a plug-in chamber system, so that between the Primary windings WI and W II and the secondary winding W III a very tight coupling can be achieved.
  • the coupling can be designed differently between the windings as required and is practically tolerance-free.
  • FIG. 2 shows the block diagram of the primary-side electrical regulating and control device 2 and the secondary-side electrical consumer device 6, which are coupled to one another via the primary windings W I and W 11 and the secondary winding W III by means of the magnetic circuit comprising the core 1 and the air gap 2.
  • the primary winding W II by an electronic circuit 9, which comprises an oscillator, a control circuit, a control circuit, a driver circuit and a protective circuit and is fed by a battery or the like, as a driver and control winding controlled.
  • the primary winding W I is a normal transformer winding controlled by the electronic circuit 9.
  • the consumer circuit 7 connected to the secondary winding W III here consists of two consumers connected in series with a rectifier and a capacitor connected in parallel with the consumers.
  • the primary-side electrical regulating and control device 2 and the secondary-side electrical consumer device 6 can, as already explained, be designed in a wide variety of ways. In any case, the range of high frequencies is selected for the transmission via the mono-core rotary transformer according to the invention from the primary side to the secondary side.
  • the core could also have an E- or U-shape with legs that are significantly longer than the windings and possibly bevels on the outside at the free ends of the outer legs.
  • the core can also be provided with a bore (not shown in the drawing) for a mechanical axis of rotation, which in the exemplary embodiment according to FIG. 1 would extend along the axis of rotation 4 through the central central projecting section 1b.
  • the number and position of the windings can be designed according to the requirements of the particular purpose of coupling and electronics. Instead of the arrangement nested one above the other in FIG. 1, the position of primary winding (s) to secondary winding (s) could also be realized next to one another.
  • the concept according to the invention for a rotary transformer opens up a number of previously unknown possibilities of electrical power and data transmission to rotating mechanical units or possibly away from them.
  • the regulation allows a dynamic reference as a reference variable for targeted power and possibly data signal controls, which can also be carried out and controlled on the stationary mechanical side.
  • the efficiency of the transmission is high and low tolerance (low leakage inductance).
  • the magnetic field does not cause any force in the axial direction.
  • the execution is also inexpensive.
  • the power transmission is independent of the speed and direction of rotation.
  • the function is also available at a standstill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP89123222A 1988-12-17 1989-12-15 Transformateur rotatif Withdrawn EP0374749A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842576A DE3842576A1 (de) 1988-12-17 1988-12-17 Monokernrotationstransformator
DE3842576 1988-12-17

Publications (1)

Publication Number Publication Date
EP0374749A1 true EP0374749A1 (fr) 1990-06-27

Family

ID=6369435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123222A Withdrawn EP0374749A1 (fr) 1988-12-17 1989-12-15 Transformateur rotatif

Country Status (2)

Country Link
EP (1) EP0374749A1 (fr)
DE (1) DE3842576A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129373A1 (de) * 1991-09-04 1993-03-11 Roland Man Druckmasch Vorrichtung fuer die uebertragung von elektrischer energie und von daten von einem feststehenden maschinenbauteil auf ein sich drehendes maschinenbauteil einer druckmaschine
EP0598924A1 (fr) * 1992-06-18 1994-06-01 Kabushiki Kaisha Yaskawa Denki Appareil de transmission de puissance sans contact, emetteur de signaux sans contact, machine du type a separation les utilisant et leur procede de commande
DE4323091A1 (de) * 1993-07-10 1995-01-12 Heidelberger Druckmasch Ag Anordnung zur Kontrolle der Lage einer Bogenkante auf einer Bogentransporttrommel
DE29619491U1 (de) * 1996-11-09 1996-12-19 Roland Man Druckmasch Signalübertragung innerhalb einer Druckmaschine
EP0897999A2 (fr) * 1997-08-16 1999-02-24 Volkmann GmbH & Co. Procédé et appareil pour le transfert sans contact d'energie et de signal dans des machines textiles, en particulier dans des machines de retordage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531749A (en) * 1969-03-27 1970-09-29 Himmelstein & Co S Rotor structure
US3612995A (en) * 1970-05-04 1971-10-12 Dieness Honeywell Holding Gmbh Apparatus for electrically measuring a condition of a rotating member
US4117436A (en) * 1976-08-23 1978-09-26 The Charles Stark Draper Laboratory, Inc. Torqueless relatively moving transformer windings
FR2445087A1 (fr) * 1978-12-21 1980-07-18 Siemens Ag Appareil de radiodiagnostic pour realiser des tomographies d'un objet de prise de vue
EP0200313A1 (fr) * 1985-04-01 1986-11-05 Honeywell Inc. Transformateur de puissance sans contact et sans force

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU294421A1 (ru) * 1970-03-06 1982-09-30 Институт Электросварки Им.Е.О.Патона Машина дл контактной шовной сварки
US3611230A (en) * 1970-11-23 1971-10-05 Lebow Associates Inc Rotary transformer structure
US4412198A (en) * 1981-12-14 1983-10-25 S. Himmelstein And Company Rotary transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531749A (en) * 1969-03-27 1970-09-29 Himmelstein & Co S Rotor structure
US3612995A (en) * 1970-05-04 1971-10-12 Dieness Honeywell Holding Gmbh Apparatus for electrically measuring a condition of a rotating member
US4117436A (en) * 1976-08-23 1978-09-26 The Charles Stark Draper Laboratory, Inc. Torqueless relatively moving transformer windings
FR2445087A1 (fr) * 1978-12-21 1980-07-18 Siemens Ag Appareil de radiodiagnostic pour realiser des tomographies d'un objet de prise de vue
EP0200313A1 (fr) * 1985-04-01 1986-11-05 Honeywell Inc. Transformateur de puissance sans contact et sans force

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129373A1 (de) * 1991-09-04 1993-03-11 Roland Man Druckmasch Vorrichtung fuer die uebertragung von elektrischer energie und von daten von einem feststehenden maschinenbauteil auf ein sich drehendes maschinenbauteil einer druckmaschine
EP0530612B1 (fr) * 1991-09-04 1995-04-12 MAN Roland Druckmaschinen AG Contrôle du repérage latéral et de la surcharge dans une machine d'impression pour feuilles
EP0598924A1 (fr) * 1992-06-18 1994-06-01 Kabushiki Kaisha Yaskawa Denki Appareil de transmission de puissance sans contact, emetteur de signaux sans contact, machine du type a separation les utilisant et leur procede de commande
EP0598924A4 (fr) * 1992-06-18 1995-01-25 Yaskawa Denki Seisakusho Kk Appareil de transmission de puissance sans contact, emetteur de signaux sans contact, machine du type a separation les utilisant et leur procede de commande.
US5637973A (en) * 1992-06-18 1997-06-10 Kabushiki Kaisha Yaskawa Denki Noncontacting electric power transfer apparatus, noncontacting signal transfer apparatus, split-type mechanical apparatus employing these transfer apparatus and a control method for controlling same
EP0845793A1 (fr) * 1992-06-18 1998-06-03 Kabushiki Kaisha Yaskawa Denki Dispositif émetteur de signaux sans contact
DE4323091A1 (de) * 1993-07-10 1995-01-12 Heidelberger Druckmasch Ag Anordnung zur Kontrolle der Lage einer Bogenkante auf einer Bogentransporttrommel
DE29619491U1 (de) * 1996-11-09 1996-12-19 Roland Man Druckmasch Signalübertragung innerhalb einer Druckmaschine
EP0897999A2 (fr) * 1997-08-16 1999-02-24 Volkmann GmbH & Co. Procédé et appareil pour le transfert sans contact d'energie et de signal dans des machines textiles, en particulier dans des machines de retordage
EP0897999A3 (fr) * 1997-08-16 2000-05-03 Volkmann GmbH & Co. Procédé et appareil pour le transfert sans contact d'energie et de signal dans des machines textiles, en particulier dans des machines de retordage

Also Published As

Publication number Publication date
DE3842576A1 (de) 1990-06-21

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