FR2318554A1 - Power supply control for induction coil - is particularly for furnaces with three phase supply to power thyristor oscillator - Google Patents

Power supply control for induction coil - is particularly for furnaces with three phase supply to power thyristor oscillator

Info

Publication number
FR2318554A1
FR2318554A1 FR7522325A FR7522325A FR2318554A1 FR 2318554 A1 FR2318554 A1 FR 2318554A1 FR 7522325 A FR7522325 A FR 7522325A FR 7522325 A FR7522325 A FR 7522325A FR 2318554 A1 FR2318554 A1 FR 2318554A1
Authority
FR
France
Prior art keywords
induction coil
oscillator
power
furnaces
power supply
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
FR7522325A
Other languages
French (fr)
Other versions
FR2318554B1 (en
Inventor
Guy Jacquemin
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.)
THERMIDOR
Original Assignee
THERMIDOR
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 THERMIDOR filed Critical THERMIDOR
Priority to FR7522325A priority Critical patent/FR2318554A1/en
Publication of FR2318554A1 publication Critical patent/FR2318554A1/en
Application granted granted Critical
Publication of FR2318554B1 publication Critical patent/FR2318554B1/fr
Granted legal-status Critical Current

Links

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
    • H05B6/06—Control, e.g. of temperature, of power
    • 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
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/067—Control, e.g. of temperature, of power for melting furnaces

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

Control circuit intended to be interspaced between an AC power supply and an induction coil. Is particulary applicable to induction heated furnaces. The circuit is intended to reduce the mass involved in the use of fixed frequency stepped transformers. The incoming three phase supply is rectified by a Graetz bridge whose output feeds a thyristor oscillator circuit via a smoothing inductance or choke. The centre points of the oscillator bridge are connected by a series parallel arrangement of variable value capacitor banks. The induction coil itself is connected in parallel with one of the series capacitors of the bank.
FR7522325A 1975-07-17 1975-07-17 Power supply control for induction coil - is particularly for furnaces with three phase supply to power thyristor oscillator Granted FR2318554A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7522325A FR2318554A1 (en) 1975-07-17 1975-07-17 Power supply control for induction coil - is particularly for furnaces with three phase supply to power thyristor oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7522325A FR2318554A1 (en) 1975-07-17 1975-07-17 Power supply control for induction coil - is particularly for furnaces with three phase supply to power thyristor oscillator

Publications (2)

Publication Number Publication Date
FR2318554A1 true FR2318554A1 (en) 1977-02-11
FR2318554B1 FR2318554B1 (en) 1977-12-16

Family

ID=9158001

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7522325A Granted FR2318554A1 (en) 1975-07-17 1975-07-17 Power supply control for induction coil - is particularly for furnaces with three phase supply to power thyristor oscillator

Country Status (1)

Country Link
FR (1) FR2318554A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037039B (en) * 1955-07-04 1958-08-21 Bauknecht Gmbh G Induction furnace system with two coreless induction furnaces that can be optionally fed

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037039B (en) * 1955-07-04 1958-08-21 Bauknecht Gmbh G Induction furnace system with two coreless induction furnaces that can be optionally fed

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"REVUE GENERALE DE L'ELECTRICITE", TOME 81, No. 2, FEVRIER 1972, PAGES 102 A 104, ARTICLE: "PROGRES RECENTS DANS LES MACHINES ET EQUIPEMENTS ELECTRIQUES DE LA METALLURGIE. APPLICATION DU CONVERTISSEUR STATIQUE AU FOUR A INDUCTION MOYENNE FREQUENCE.", PAR B. DE MIRAMON. *
"V.D.I.-ZEITSCHRIFT", VOLUME 117, 1975, No. 10-MAI, PAGES 488 ET 489, ARTICLE: "BEITRAGE ZUR LEISTUNGS-UND FREQUENZREGELUNG SELBSTERREGTER EINKREISIGER HF-INDUSTRIE-GENERATOREN" *

Also Published As

Publication number Publication date
FR2318554B1 (en) 1977-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse