Control device and method for electromagnetic cooker and power switch tube thereof
A technology of a power switch tube and a control device, which is applied in the output power conversion device, control/regulation system, conversion of DC power input to DC power output, etc. Unbalanced distribution, etc.
Active Publication Date: 2021-03-19
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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Problems solved by technology
[0003] However, when two parallel IGBTs set in the induction cooker are turned on at the same time, since the individual characteristics of the IGBT may be different, the time required for each IGBT to turn off and turn on is also different, and the turn-on voltage of each IGBT The drop is also different, it is easy to cause the current distribution through the IGBT to be unbalanced, thereby affecting the reliability of the IGBT, and even affecting the normal use of the induction cooker
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[0033] 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.
[0034] The control device and method of the electromagnetic cooker and its power switch tube according to the embodiment of the present invention will be described below with reference to the accompanying drawings.
[0035] The electromagnetic cooker in the embodiment of the present invention may include two first power switch tubes and second power switch tubes connected in parallel. Wherein, the electromagnetic cooker may be an electromagnetic cooker, an electromagnetic rice cooker, or the like.
[0036] In one embodiment of t...
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The invention discloses an electromagnetic cooker and a control device and method of a power switch tube of the electromagnetic cooker. The electromagnetic cooker comprises a first power switch tube and a second power switch tube connected in parallel with each other. The device comprises a main control module used for outputting an initial pulse signal, a driving module which is used for processing the initial pulse signal to obtain a first driving signal and a second driving signal and driving and controlling the first power switch tube through the first driving signal and driving and controlling the second power switch tube through the second driving signal to control the turn-on and turn-off of the first power switch tube and the second power switch tube in turn. According to the device of the invention, the turn-on and turn-off of the first power switch tube and the second power switch tube connected in parallel can be controlled to avoid the unbalanced distribution of current passing the power switch tubes, the reliability of the power switch tubes is improved, and therefore, the normal use of the electromagnetic cooker can be ensured.
Description
technical field [0001] The invention relates to the technical field of living appliances, in particular to a control device for a power switch tube in an electromagnetic cooker, an electromagnetic cooker and a control method for a power switch tube in the electromagnetic cooker. Background technique [0002] The power of electromagnetic cookers such as household induction cookers is generally around 2000W, and they mainly have functions such as cooking, hot pot, soup, and porridge. In order to enable users to have more functional experience, two parallel IGBTs (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor) can be set in the induction cooker to increase the heating power of the induction cooker. By setting two parallel IGBTs in the induction cooker, the heating power of the induction cooker can be increased to 2600W, and even the heating power of the induction cooker can be increased to 3000W. [0003] However, when two parallel-connected IGBTs set in...
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IPC IPC(8): H02M7/219H02M3/158
Inventor 江德勇王云峰
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD