Electromagnetic heating device and its power control method and power control system
An electromagnetic heating device and power control technology, applied in the direction of induction heating control, induction heating, etc., can solve the problems of large power error and large current detection error, and achieve the goals of improving consistency, reducing current sampling error, and reducing sampling error Effect
Active Publication Date: 2016-02-03
MIDEA GRP CO LTD +1
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[0002] At present, some electromagnetic heating products use the method of detecting the current flowing through the IGBT (transistor) to detect the power, and control the power through the current flowing through the IGBT. However, during the current detection process, it is easily affected by resistance, capacitance, amplifier, electromagnetic interference, etc. , resulting in a large current detection error, which in turn leads to a large power error
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[0036] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0037] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0038] figure 1 A flow chart of a power control method according to an embodiment of the present invention is shown.
[0039] Such as figure 1 As shown, the power control method according to the e...
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The invention provides a power control method. The method comprises the following steps: detecting the current working current of an electromagnetic heating device; when the working current does not reach target current, adjusting the working current to the target current; when the working current reaches the target current, acquiring the working pulse width of a transistor in the electromagnetic heating device; comparing the working pulse width with a target pulse width, and compensating the target current according to a comparison result to obtain new target current; adjusting the working current to new target current. Correspondingly, a power control system and the electromagnetic heating device are further provided. By adopting the technical scheme, errors of current sampling can be reduced, and the consistence of power is improved.
Description
technical field [0001] The invention relates to the technical field of electromagnetic heating, in particular to a power control method of an electromagnetic heating device, a power control system and an electromagnetic heating device. Background technique [0002] At present, some electromagnetic heating products use the method of detecting the current flowing through the IGBT (transistor) to detect the power, and control the power through the current flowing through the IGBT. However, during the current detection process, it is easily affected by resistance, capacitance, amplifier, electromagnetic interference, etc. , leading to a large current detection error, which in turn leads to a large power error. [0003] Therefore, how to reduce the error of current detection and improve the consistency of power has become a technical problem to be solved urgently. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems exis...
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IPC IPC(8): H05B6/06
Inventor 汪钊陈伟肖小龙李新峰艾永东
Owner MIDEA GRP CO LTD