Electromagnetic heating equipment, electromagnetic heating system and control method and device thereof
A technology of heating system and control method, applied in electric heating device, induction heating control, electric/magnetic/electromagnetic heating, etc., can solve the problems of increased electromagnetic noise, inappropriate treatment method, sudden change of pulse in heating interval, etc. Risk of sudden change of pulse current, avoid sudden change of IGBT drive pulse width, improve safety, reliability and service life
Active Publication Date: 2021-02-26
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
View PDF11 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In the related technology, the purpose of reducing the resonance voltage is achieved by reducing the IGBT driving pulse width in the peak period of the mains power. However, due to inappropriate processing methods, such as using a fixed narrow-width driving pulse in the step-down period, it will cause the entire heating The sudden change of pulse in the interval, the sudden change of heating frequency, and the increase of electromagnetic noise affect the user experience
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036] 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.
[0037] The driving pulse control method of the IGBT in the electromagnetic heating system, the computer readable storage medium, the driving pulse control device of the IGBT in the electromagnetic heating system, the electromagnetic heating system and the electromagnetic heating equipment proposed by the embodiments of the present invention are described below with reference to the accompanying drawings.
[0038] Firstly, how to reduce the resonant voltage of the IGBT in the peak interval of the alternating current in the related ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses electromagnetic heating device, an electromagnetic heating system and a driving pulse control method and apparatus of an IGBT (insulated gate bipolar transistor) thereof. The method comprises the following steps: judging whether the target heating power of the electromagnetic heating system is greater than preset power or not; if the target heating power is greater than thepreset power, the driving pulse width of the IGBT is adjusted in a sectional control mode in each half-wave period of alternating current, so that the driving pulse width of the IGBT is uniformly andslowly changed. Therefore, the resonance voltage at the peak of the alternating current can be effectively reduced, the problems of abrupt change of the driving pulse width, abrupt change of the heating frequency and increase of electromagnetic noise of the IGBT can also be avoided, meanwhile g the risk of abrupt change of the pulse current of the IGBT is reduced, the safety reliability of the IGBT is improved, and the service life of the IGBT is prolonged.
Description
technical field [0001] The present invention relates to the technical field of household appliances, in particular to a driving pulse control method for IGBT in an electromagnetic heating system, a driving pulse control device for IGBT in an electromagnetic heating system, an electromagnetic heating system with the driving pulse control device and a An electromagnetic heating device with the electromagnetic heating system is provided. Background technique [0002] When the induction cooker is heated at the highest power, the driving pulse width of the IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) is the largest, resulting in the highest resonance voltage. In order to ensure the reliable operation of the IGBT (the withstand voltage of the IGBT is generally 1200V), Try to reduce the resonant voltage (when the mains peak, make the resonant voltage less than 1100V). [0003] In the related technology, the purpose of reducing the resonance voltage i...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/06
CPCH05B6/062
Inventor 江德勇王云峰邹伟江太阳
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD