Control unit of induction heating unit, induction heating system, and method of controlling induction heating unit
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United States of America Patent
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Apr 10, 2018
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N/A
app pub date -
Dec 14, 2015
filing date -
Dec 14, 2009
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Abstract
A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.
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