Electromagnetic heating cooking appliance and its power control method and device
A technology for cooking utensils and power control, applied in the field of electromagnetic heating cooking utensils, can solve the problems of large amount of calculation, high degree of functional integration, and insufficient program storage space, and achieve the effect of effective power control and less storage space
Active Publication Date: 2022-04-19
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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Problems solved by technology
However, the main control chip in the general electromagnetic heating scheme is a dedicated chip. In order to obtain a higher cost performance, this type of chip has a high degree of functional integration and limited program storage space, and the power is processed by PID calculation (P=U_AD*I_AD ), the amount of calculation is large, resulting in insufficient program storage space
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[0037] 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.
[0038] The electromagnetic heating cooking appliance and its power control method and device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0039] figure 1 It is a schematic flowchart of a power control method for an electromagnetic heating cooking appliance according to an embodiment of the present invention. Such as figure 1 As shown, the power control method of an electromagnetic heating cooking appliance includes the following steps:
[0040] S10...
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The present invention provides an electromagnetic heating cooking appliance and its power control method and device, wherein the method includes: obtaining the working voltage and working gear of the electromagnetic heating cooking appliance, and obtaining the working current of the electromagnetic heating cooking appliance in real time; Calculate the target current according to the heating power corresponding to the working gear; obtain the width adjustment value of the PPG signal of the IGBT in the electromagnetic heating cooking appliance according to the current difference between the current working current and the target current of the electromagnetic heating cooking appliance; according to the current working current and Acquire the working current change trend of the electromagnetic heating cooking appliance for the last working current; adjust the value pair according to the magnitude relationship between the current working current of the electromagnetic heating cooking appliance and the target current, the working current changing trend of the electromagnetic heating cooking appliance and the width of the PPG signal The PPG signal output to the IGBT is adjusted, thereby realizing effective control of the power of the electromagnetic heating cooking appliance and occupying less storage space.
Description
technical field [0001] The invention relates to the technical field of living appliances, in particular to a power control method for an electromagnetic heating cooking appliance, a power control device for an electromagnetic heating cooking appliance, and an electromagnetic heating cooking appliance. Background technique [0002] There are more and more induction cookers using electromagnetic heating, such as induction cookers, IH (Induction Heat, electromagnetic heating) rice cookers, electromagnetic water heaters, and the like. Since the electromagnetic heating adopts LC high-frequency resonance mode, the frequency is as high as 20KHz or more, so there is some interference to the sampling of the circuit, such as voltage sampling and current sampling. In order to obtain constant and stable power, the general practice is to use PID (Proportion Integral Derivative, proportional-integral-differential) adjustment method to control heating, that is, to realize PPG (Programme Pu...
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IPC IPC(8): H05B6/06
CPCH05B6/062
Inventor 江德勇王云峰
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD