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Control method of normal-pressure low-temperature plasma power supply and power supply device

A technology of low-temperature plasma and power supply device, which is applied in the direction of output power conversion device, electrical components, AC power input conversion to AC power output, etc., which can solve the problems of perforation and damage of the processed fabric, and achieve the purpose of avoiding perforation and damage, The effect of improving reliability and facilitating flexible adjustment

Inactive Publication Date: 2012-06-13
GUILIN UNIV OF ELECTRONIC TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

The plasma power load is nonlinear and time-varying, and the discharge form is easily affected by the working conditions and transitions to filament discharge, resulting in perforation or damage to the treated fabric

Method used

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  • Control method of normal-pressure low-temperature plasma power supply and power supply device
  • Control method of normal-pressure low-temperature plasma power supply and power supply device
  • Control method of normal-pressure low-temperature plasma power supply and power supply device

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Embodiment Construction

[0028] see figure 1, the present invention is an atmospheric pressure low temperature plasma power supply device for fabric surface treatment, mainly composed of a rectification filter unit 1, a Buck converter 2, a Hall voltage transformer 3, a Buck converter control unit 4, and a Hall current transformer 5. H-bridge inverter control unit 6, H-bridge inverter 7, DC blocking capacitor 8, high-frequency step-up transformer 9, computer control unit 11 and auxiliary power supply unit 12. The AC input side of the rectifier bridge in the rectification filter unit 1 is input from the mains; the straight uncontrollable DC output from the rectification filter unit 1 is sent to the input end of the Buck converter 2; the straight controllable DC output from the Buck converter 2 Send it to the DC input terminal of the H-bridge inverter 7; the AC output terminal of the H-bridge inverter 7 is connected to the primary side winding of the high-frequency step-up transformer 9 after being passe...

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Abstract

The invention discloses a control method of a normal-pressure low-temperature plasma power supply and a power supply device. A technical route of outputting in a sequence of power-frequency alternating-current input (AC)->low-voltage rectification filtration (DC)->Buck transformer pulse width modulation and pressure adjustment (DC)->H-bridge high-frequency inversion (AC)->high-frequency isolation transformer boosting (AC), wherein a Buck transformer is used for controlling the duty ratio of pulse width modulation by a negative feedback signal U of output voltage of the Buck transformer and carrying out automatic voltage stabilizing; and in the H-bridge high-frequency inversion step, an H-bridge inverter is used for controlling a current peak value of the pulse through a negative feedback signal I of input current of the H-bridge inverter. The control method disclosed by the invention can be used for flexibly adjusting the peak value of a discharge electric field, the peak value of discharge current and discharge frequency according to the process requirements, producing stable, uniform and soft low-temperature plastic under the normal pressure for treating surfaces of fabrics, rapidly restricting filament discharge from forming and avoiding the treated fabrics from penetrating and damaging accidently.

Description

technical field [0001] The invention relates to the field of power supply circuits, in particular to a control method and a power supply device for a normal-pressure low-temperature plasma power supply for fabric surface treatment. Background technique [0002] In low-temperature plasma, the electron temperature is as high as 10 4 -10 5 K, while the gas temperature is close to room temperature, and the plasma is in a state of thermal imbalance. In the textile industry, low-temperature plasma technology is used to modify the surface of natural and chemical fiber fabrics, that is, the use of high-energy active particles of low-temperature plasma to interact with the fiber surface to make the surface of the fiber fabric etched, cross-linked, polymerized and bonded. Chemical modification such as branch polymerization and physical modification such as antistatic, flame retardant, anti-wrinkle, water and oil repellency, and sanitation. This treatment process does not use any in...

Claims

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Application Information

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IPC IPC(8): H02M5/458
Inventor 韦寿祺杨建湘王斌李震
Owner GUILIN UNIV OF ELECTRONIC TECH
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