High-frequency high-voltage power supply for electrostatic dust collection and control method thereof
A high-frequency high-voltage power supply, electrostatic dust removal technology, applied in electrostatic separation, power supply technology and other directions, can solve the problems of reduced dust removal efficiency, endangering workers' lives, equipment damage, etc., to ensure reliable operation and high dust removal efficiency.
Active Publication Date: 2017-08-29
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0004] The dust removal efficiency of electrostatic dust removal in industry has a great relationship with the output voltage of the power supply. When the output voltage exceeds the initial corona voltage, as the voltage increases, the number of free electrons and negative ions released by the discharge electrode increases. It also makes the dust removal efficiency higher and higher; but when the output voltage continues to increase until it exceeds the breakdown voltage, the dust removal efficiency will drop significantly due to the breakdown of the gap, and it may even cause equipment damage and endanger the safety of workers.
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0031] figure 1 It is a structural diagram of a high-frequency high-voltage power supply circuit, which includes a main power conversion circuit, a sensing collection and processing circuit, and a control circuit, wherein the control circuit is connected to the main power circuit through a drive circuit, and the sensing collection and processing circuit is connected to the control circuit; The sensing collection and processing circuit transmits the collected data to the DSP control circuit in the control circuit, and then the DSP control circuit sends a control signal to the drive circuit to adjust the output voltage of the main power conversion circuit, so as to ensure the purification efficiency as much as possible. higher value.
[0032]The main power conversion circuit includes a recti...
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The invention relates to a high-frequency high-voltage power supply for electrostatic dust collection and a control method thereof. According to the invention, a dust sensor is used for transmitting information about dust concentrations at the air inlet and air outlet of an electrostatic device to a control chip for processing; the relation of the dust concentrations at the air inlet and the air outlet is reasonably reckoned by using an algorithm in the control chip so as to obtain corrected dedusting efficiency; the output voltage of the high-frequency power supply is adjusted, and the changes of dedusting efficiency are observed so as to allow the output voltage to be adjusted to a proper value on the premise of safe operation of the power supply; and thus, dedusting efficiency is allowed to maintain at a high level. The control method effectively presents purifying effect on dust of the electrostatic device in the manner of concentration changes; the dust concentrations are acquired by using the sensor and then enter the control chip for data processing, so dedusting effect is analyzed; the output voltage of the power supply for electrostatic dust collection is adjusted according to dedusting effect so as to allow the output voltage to be maintained at an optimal output voltage value; and thus, optimal dedusting efficiency is obtained.
Description
technical field [0001] The invention relates to the technical field of power supplies for electrostatic dust removal, in particular to a high-frequency and high-voltage power supply for electrostatic dust removal and a control method thereof. Background technique [0002] The high-voltage electrostatic precipitator (EPS) used to control industrial dust pollution has attracted more and more attention because of its high dust removal efficiency, low energy consumption, and convenient maintenance and management. The mechanism of electrostatic dust removal is to cause corona discharge in the space electric field to generate a large number of free electrons and negative ions. The negatively charged pears formed by the collision with the dust in the polluted air are electrostatically attracted by the space electric field and captured by the positive dust collecting electrode. , and then regularly cleaned by the cleaning device to purify the air. [0003] Since the emergence of el...
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IPC IPC(8): B03C3/66B03C3/68
CPCB03C3/66B03C3/68
Inventor 沈栋肖文勋陆展辉李富盛林丹于俊杰姚蔚琳李培辉邹泽宇
Owner SOUTH CHINA UNIV OF TECH