PROCESS FOR INDUCTION HEATING USED USED IN A DEVICE INCORPORATING MAGNETICALLY COUPLED INDUCTORS
摘要
Provided is an induction heating method implemented in a device for heating a metal part, the device including magnetically coupled inductors. Oscillating circuits of the device have at least approximately the same resonance frequency, each inverter is controlled by a control unit to vary amplitude and phase of current passing through the corresponding inductor, the device also including a means for determining said current and an actual temperature profile of said part. The method includes: a) comparing said actual temperature profile with a reference temperature profile and calculating a reference power density profile; b) calculating target currents which the inverters must produce in order for the currents of the inductors to reach suitable target values; c) determining the currents passing through the inductors to compare said currents with said target values and determine correction current deviations, and sending correction instructions to said control units in accordance with said current deviations.
申请公布号
EP2491760(A1)
申请公布日期
2012.08.29
申请号
EP20100785478
申请日期
2010.10.19
申请人
ELECTRICITE DE FRANCE;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS;INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE