EP0248090A1 - Aperiodischer Generator - Google Patents

Aperiodischer Generator Download PDF

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Publication number
EP0248090A1
EP0248090A1 EP85400465A EP85400465A EP0248090A1 EP 0248090 A1 EP0248090 A1 EP 0248090A1 EP 85400465 A EP85400465 A EP 85400465A EP 85400465 A EP85400465 A EP 85400465A EP 0248090 A1 EP0248090 A1 EP 0248090A1
Authority
EP
European Patent Office
Prior art keywords
transformer
aperiodic
adaptation
generators
autotransformer
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Withdrawn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
EP85400465A
Other languages
English (en)
French (fr)
Inventor
Albert Jakoubovitch
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.)
Individual
Original Assignee
Individual
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
Priority claimed from FR8415736A external-priority patent/FR2571887A1/fr
Priority claimed from FR8419859A external-priority patent/FR2587538B1/fr
Application filed by Individual filed Critical Individual
Publication of EP0248090A1 publication Critical patent/EP0248090A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/04—Sources of current

Definitions

  • the present invention relates to an improvement made to induction heating generators, called “aperiodic generators”.
  • generators constructed according to this technique there is in the generator itself an adaptation transformer of the aperiodic transformer carrying mainly active energy and whose object is to adapt the operating impedance of the electronic tube used in these generators to the power line.
  • these transformers consist of a primary and a secondary or of several primary windings and of multiple secondary; these are always identical and interconnected.
  • the transformation ratios usually used are between 5 and 7.
  • the frequency of these generators is usually between 50 and 300 KHz, it is necessary to use materials with low dielectric losses for cable insulation.
  • the multi-conductor cables used for the transport of energy are usually insulated with polyethylene and are the subject of special projects.
  • the practical operating voltages used on induction generators are usually between 300 and 500 volts; these voltages being determined by the limit voltages of the capacitor banks usable for low-voltage induction heating.
  • This transformer usually has intermediate sockets allowing the voltage to be adjusted to plus or minus 20% around the ratio of the matching transformer located at the end of the cable.
  • the object of the present invention is to obtain directly from the aperiodic transformer the practical operating voltages between 300 and 500 volts.
  • the aperiodic transformer described above each of the secondary and divided into two separate half aecondaries. tincts each connected to an energy transport cable.
  • these cables can be connected either in series or in parallel so as to obtain exactly the same possibilities as in the case described above.
  • the present invention further simplifies both the production of the aperiodic transformers and the adapter boxes.
  • the invention consists in making an aperiodic transformer comprising at least one primary winding connected in alternation between the anode of the tube and the cathode and one or more secondary comprising at least three sockets; these three sockets being, one the reference potential, the second the minimum operating voltage, the third the operating voltage.
  • the tube VI is connected to the aperiodic transformer Tl where the primary winding is represented at El and the secondary winding E2.
  • the taps 1 and 2 of this winding are connected to an auxiliary autotransformer T2 intended to carry out a voltage division in order to adapt the generator to its load.
  • the energy transport line L1 connects this device to the adaptation box, the composition of which is limited to a battery of capacitors CI associated with the inductor N1. 1
  • a second line L2 brings the voltage drawn across the oscillating circuit CI-NI to the excitation autotransformer T3.
  • the resistance RI is the gate self-polarization resistance which is associated with the decoupling capacitor Cl; C2 is the decoupling capacitor of the anode voltage.
  • Such a device makes it possible to limit the adaptation box to the single capacitor bank; all the adaptation and excitation transformers found in the generator and no longer as previously in the adaptation box.
  • the transformer T2 is no longer necessary because it can be provided directly on the secondary of the aperiodic transformer, the number of sockets allowing the desired adaptation.
  • the generator is connected to several adaptation boxes, it is possible to provide switching by contactor, as in the known embodiments, but the same excitation transformers T3 and adaptation T2 are used independently of the number of cabinets while in known embodiments each adapter cabinet required an autotransformer and a separate grid transformer.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Ac-Ac Conversion (AREA)
EP85400465A 1984-10-11 1985-03-12 Aperiodischer Generator Withdrawn EP0248090A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8415736 1984-10-11
FR8415736A FR2571887A1 (fr) 1984-10-11 1984-10-11 Perfectionnement au generateur aperiodique
FR8419859A FR2587538B1 (fr) 1984-12-24 1984-12-24 Perfectionnement au generateur aperiodique
FR8419859 1984-12-24

Publications (1)

Publication Number Publication Date
EP0248090A1 true EP0248090A1 (de) 1987-12-09

Family

ID=26224200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400465A Withdrawn EP0248090A1 (de) 1984-10-11 1985-03-12 Aperiodischer Generator

Country Status (1)

Country Link
EP (1) EP0248090A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU620482B2 (en) * 1989-07-14 1992-02-20 Mitsubishi Jukogyo Kabushiki Kaisha Induction heating apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR928971A (fr) * 1945-06-26 1947-12-12 Rca Corp Perfectionnements aux appareils transformateurs de courant
FR977968A (fr) * 1942-12-01 1951-04-09 Radio Electr Soc Fr Appareillage à lampes pour le traitement thermique des métaux par haute fréquence
CH287694A (fr) * 1949-06-22 1952-12-15 Csf Générateur de courant à haute fréquence, notamment pour chauffage par induction.
US2964608A (en) * 1958-09-30 1960-12-13 William R Maclean Induction heating thermostable work circuit
FR1384779A (fr) * 1963-11-27 1965-01-08 Applic Electro Thermiques Soc Générateur à transformateur d'adaptation apériodique
US3571644A (en) * 1969-01-27 1971-03-23 Heurtey Sa High frequency oscillator for inductive heating
FR2216746A1 (de) * 1973-01-31 1974-08-30 Jakoubovitch Albert

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR977968A (fr) * 1942-12-01 1951-04-09 Radio Electr Soc Fr Appareillage à lampes pour le traitement thermique des métaux par haute fréquence
FR928971A (fr) * 1945-06-26 1947-12-12 Rca Corp Perfectionnements aux appareils transformateurs de courant
CH287694A (fr) * 1949-06-22 1952-12-15 Csf Générateur de courant à haute fréquence, notamment pour chauffage par induction.
US2964608A (en) * 1958-09-30 1960-12-13 William R Maclean Induction heating thermostable work circuit
FR1384779A (fr) * 1963-11-27 1965-01-08 Applic Electro Thermiques Soc Générateur à transformateur d'adaptation apériodique
US3571644A (en) * 1969-01-27 1971-03-23 Heurtey Sa High frequency oscillator for inductive heating
FR2216746A1 (de) * 1973-01-31 1974-08-30 Jakoubovitch Albert

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU620482B2 (en) * 1989-07-14 1992-02-20 Mitsubishi Jukogyo Kabushiki Kaisha Induction heating apparatus

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