Normal-pressure low-temperature plasma power supply and power supply device
A low-temperature plasma and power device technology, which is applied to output power conversion devices, electrical components, and AC power input to AC power output, etc. The effect of improving reliability and quickly suppressing filament discharge energy
Inactive Publication Date: 2014-01-01
GUILIN UNIV OF ELECTRONIC TECH
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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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[0025] 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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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 circuits, in particular to a normal-pressure low-temperature plasma power supply device 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 intermediate medium, and stimulates the direct in...
Claims
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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