Multiple zone induction coil power control apparatus and method

Details Multiple zone induction coil power control apparatus and method Multiple zone induction coil power control apparatus and method

1983-08-29

1985-03-19

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1041, 219 1071, 219503, 323329, H05B 608

Patent

active

045061319

ABSTRACT:
A plurality of zones of an induction heating coil are individually controlled by varying the current through one or more zones of the coil to obtain a desired temperature profile in a workpiece. The current flow through a zone of the coil is determined by the conduction state of an associated saturable reactor, which is controlled in accordance with a preselected value or a variable value generated, for example, by a computer.

REFERENCES:
patent: 2773161 (1956-12-01), Baker
patent: 2813186 (1957-11-01), Bock
patent: 3291969 (1966-12-01), Speransky et al.
patent: 3346712 (1967-10-01), Seyfried
patent: 3612805 (1971-10-01), Kennedy
patent: 3743808 (1973-07-01), Kasper
patent: 4307276 (1981-12-01), Kurata et al.

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