SYNCHRONIZATION CONTROL DEVICE FOR PLURAL ELECTROMAGNETIC INDUCTION COILS

• Main Authors: UCHIDA NAOKI, KATAYAMA HIDEKI, KAWANAKA KEIJI, UENO YASUNARI
• Format: Patent
• Language: English
• Published: 09.02.2001
• Edition: 7
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To provide a control device for synchronizing an alternating current flowing in a plurality of neighboring electromagnetic induction coils approaching one another and capable of controlling a current level and free of mutual interference. SOLUTION: A plurality of electromagnetic induction coils 1, 2 arranged approaching one another are connected to different power supplies via PWM inverters 16, 17 and an synchronized signal output circuit 18 for synchronizing a high frequency current output from the PWM inverters 16, 17 is connected to the PWM inverters 16, 17, thereby making the level of the output current adjustable in each of the power supplies.