Induktionsheizverfahren und -System

Details

Veröffentlichungs-Nr.

EP3151631

Aktenzeichen

EP15188157

Anmeldetag

2. Oktober 2015

Veröffentlichung

13. Juni 2018

Erteilung

13. Juni 2018

Rechtsraum

EP

IPC

H05B6/06

Abstract

A method for managing an induction heating system is disclosed. The induction heating system comprises an electrically conducting load and an inverter circuit comprising a switching section and a resonant section. The switching section comprises switching devices adapted to generate an AC current from an AC input voltage comprising a plurality of half-waves. The resonant section comprises an induction heating coil adapted to receive the AC current for generating a corresponding time-varying magnetic field in order to generate heat in the electrically conducting load by inductive coupling. The AC current oscillates at an actuation frequency of the switching devices and has an envelope comprising a plurality of half-waves corresponding to the half-waves of the AC input voltage. The amount of heat generated in the load depends on the frequency of the AC current. The method comprises varying, within a same half-wave of the envelope, the actuation frequency according to a plurality of actuation frequency values; calculating a safe actuation frequency range; setting the actuation frequency based on said calculated safe actuation frequency range. Said calculating a safe actuation frequency range comprises calculating at least one between: - the closeness of each actuation frequency value to a resonance frequency of the resonant section, - the closeness of each actuation frequency value to a current limit frequency corresponding to the maximum sustainable current by the switching devices.

Anmelder

Firmen

ELECTROLUX APPLIANCES AKTIEBOLAG
Electrolux Appliances Aktiebolag

Land

🇸🇪 Schweden

Fachgebiete