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Electromagnetic heating device, electromagnetic heating system and control method thereof

A heating system and control method technology, applied in induction heating control, induction heating and other directions, can solve the problems affecting the normal operation of the electromagnetic heating system, IGBT tube burning, large IGBT tube loss, etc. High and low loss effect

Active Publication Date: 2020-12-22
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Related electromagnetic heating systems such as induction cookers usually drive the IGBT tube through the drive circuit, that is, the drive circuit can provide a drive signal to the IGBT tube to control the IGBT tube to be turned on or off. However, if the drive circuit is abnormal, it may cause the IGBT tube to be lost. If it is too large, it may even cause the IGBT tube to heat up and burn out, which will affect the normal operation of the electromagnetic heating system

Method used

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  • Electromagnetic heating device, electromagnetic heating system and control method thereof
  • Electromagnetic heating device, electromagnetic heating system and control method thereof
  • Electromagnetic heating device, electromagnetic heating system and control method thereof

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0033] The control method of the electromagnetic heating system proposed by the embodiment of the first aspect of the present invention will be described below with reference to the accompanying drawings.

[0034] figure 1 is a flow chart of the control method of the electromagnetic heating system according to the embodiment of the present invention. Among them, the electromagnetic heating system includes a resonant heating circuit, a synchronous circuit, a power switch tube and a driving circuit.

[0035] In one embodiment of ...

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Abstract

The present invention discloses a control method of an electromagnetic heating system. The control method comprises the following steps of: controlling an electromagnetic heating system to enter a first heating period and a second heating period, wherein each heating period comprises a discharge phase, a heating phase and a stop phase, in the discharge phase of the first heating period, a drive circuit is controlled to output M first pulse signals to a power switch tube, and in the discharge phase of the second heating period, the drive circuit is controlled to output N second pulse signals tothe power switch tube; and recording the number of pulses which cannot meet a preset condition in the M first pulse signals by employing a first counter to obtain a first counting value, and recording the number of pulses which cannot meet the preset condition in the N second pulse signals by employing a second counter; and determining whether the drive circuit is abnormal or not according to a first counting value and a second counting value so as to effectively detect the abnormal condition of the drive circuit and reduce the loss. The present invention further discloses an electromagneticheating system and an electromagnetic heating device.

Description

technical field [0001] The invention relates to the technical field of living appliances, in particular to a control method of an electromagnetic heating system, an electromagnetic heating system and an electromagnetic heating device. Background technique [0002] Related electromagnetic heating systems such as induction cookers usually drive the IGBT tube through the drive circuit, that is, the drive circuit can provide a drive signal to the IGBT tube to control the IGBT tube to be turned on or off. However, if the drive circuit is abnormal, it may cause the IGBT tube to be lost. If it is too large, it may even cause the IGBT tube to heat up and burn out, which will affect the normal operation of the electromagnetic heating system. [0003] Therefore, there is a need for improvement in the related art. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the first...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/06
CPCH05B6/06
Inventor 江德勇王云峰雷俊周云卞在银
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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