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Electromagnetic heating cooking appliance and its igbt overcurrent control method and control device

A technology of cooking utensils and control methods, which is applied to utensils with integral electric heating devices, heating devices, cooking utensils, etc., can solve problems such as IGBT damage and poor consistency, and achieves prevention of overcurrent damage and solutions to IGBT overcurrent problems. Effect

Active Publication Date: 2021-07-20
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] At present, the overcurrent control method of IGBT in electromagnetic heating cooking appliances (such as induction cooker) mainly uses hardware circuit to protect the IGBT from overcurrent. The hardware circuit protection depends on the external circuit, and the consistency of protection is poor. Without protection, it is easy to cause IGBT damage

Method used

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  • Electromagnetic heating cooking appliance and its igbt overcurrent control method and control device
  • Electromagnetic heating cooking appliance and its igbt overcurrent control method and control device
  • Electromagnetic heating cooking appliance and its igbt overcurrent control method and control device

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Embodiment Construction

[0034] 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.

[0035] The method for controlling the overcurrent of IGBT in the electromagnetic heating cooking appliance, the device for controlling the overcurrent of IGBT in the electromagnetic heating cooking appliance and the electromagnetic heating cooking appliance according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0036] figure 1 It is a flowchart of an IGBT overcurrent control method in an electromagnetic heating cooking appliance according to an embodiment of th...

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Abstract

The invention discloses an electromagnetic heating cooking appliance and its IGBT overcurrent control method and control device. The overcurrent control method includes the following steps: acquiring the material of the pot currently placed on the electromagnetic heating cooking appliance; The pot material on the electromagnetic heating cooking appliance obtains the IGBT turn-on pulse width limit; according to the IGBT turn-on pulse width limit, the maximum turn-on pulse width during the IGBT working process is limited to prevent the IGBT from overcurrent. Therefore, according to different materials of pots and utensils, different IGBT turn-on pulse width limits are given to achieve the purpose of limiting the IGBT current, which can effectively solve the problem of IGBT overcurrent and prevent IGBT overcurrent damage.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to an electromagnetic heating cooking appliance and an overcurrent control method and control device for an IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) thereof. Background technique [0002] At present, the overcurrent control method of IGBT in electromagnetic heating cooking appliances (such as induction cooker) mainly uses hardware circuit to protect the IGBT from overcurrent. The hardware circuit protection depends on the external circuit, and the consistency of protection is poor. If it is not protected, it is easy to cause damage to the IGBT. [0003] Therefore, it is necessary to improve the overcurrent protection method of the IGBT in the current electromagnetic heating cooking appliance. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the above-mentioned technologies at le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47J27/00A47J36/24
CPCA47J27/004A47J36/2483
Inventor 秦继祥
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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