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Ultraviolet lamp excitation method and device and circuit

An ultraviolet lamp and excitation circuit technology, applied in the field of power electronics, can solve the problems of inability to accurately output excitation ultraviolet lamp voltage, short duration of high-voltage pulse, large volume of inductive ballast, etc.

Pending Publication Date: 2021-04-27
NANTONG ELITE MARINE EQUIP & ENG INC JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Although the inductive ballast is flexible and simple, its response is slow, and it needs to be switched on and off repeatedly and the inert gas ionized continuously to ensure the normal luminous work of the lamp tube
[0005] 2. The high-voltage pulse generated by the magnetic ballast through self-inductance lasts for a short time. For UV lamps with different specifications, it is necessary to continuously adjust the hardware parameters of the magnetic ballast, which has poor adaptability.
[0006] 3. For high-power ultraviolet lamps, the excitation voltage is as high as 6KV, the magnetic ballast is large in size, and the manufacturing process is relatively complicated, so it cannot accurately output the voltage required to excite the ultraviolet lamp.

Method used

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  • Ultraviolet lamp excitation method and device and circuit
  • Ultraviolet lamp excitation method and device and circuit
  • Ultraviolet lamp excitation method and device and circuit

Examples

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Effect test

no. 1 example

[0029] In the first embodiment, the present invention provides a method for exciting an ultraviolet lamp, such as figure 1 As shown, a kind of ultraviolet lamp excitation method provided by the present invention comprises:

[0030] 101: Obtain the direction of the resonant current I1 of the ultraviolet light excitation circuit and the ultraviolet light excitation circuit parameters;

[0031] 102: According to the direction of the resonant current I1 of the ultraviolet light excitation circuit and the ultraviolet light excitation circuit parameters, determine the resonant frequency of the ultraviolet light excitation circuit;

[0032] 103: According to the resonant frequency of the ultraviolet light excitation circuit, control the switch direction of the switch control branch of the ultraviolet light excitation circuit;

[0033] 104: Output the resonant voltage of the excitation circuit of the ultraviolet light lamp, so as to control the normal operation of the ultraviolet lig...

no. 2 example

[0039] In the second embodiment, the present invention provides an ultraviolet light excitation device, such as figure 2 As shown, a kind of ultraviolet light excitation device provided by the present invention comprises:

[0040] An information acquisition unit 201, configured to acquire the direction of the resonant current I1 of the excitation circuit of the ultraviolet light and the parameters of the excitation circuit of the ultraviolet light;

[0041] An information processing unit 202, configured to determine the resonant frequency of the ultraviolet lamp excitation circuit according to the direction of the resonance current I1 of the ultraviolet lamp excitation circuit and the parameters of the ultraviolet lamp excitation circuit;

[0042] An information control unit 203, configured to control the switch direction of the switch control branch of the ultraviolet lamp excitation circuit according to the resonance frequency of the ultraviolet lamp excitation circuit;

...

no. 3 example

[0044] In the third embodiment, the present invention provides an excitation circuit for an ultraviolet light lamp, such as image 3 As shown, a kind of ultraviolet light excitation circuit provided by the present invention includes: an input rectification branch, a switch control branch and an output resonance branch;

[0045] The input rectification branch is used to rectify the three-phase AC input voltage into a DC voltage, and input the DC voltage to the switch control branch;

[0046] The switch control branch is used to invert the DC voltage into an AC voltage during the working phase of the ultraviolet lamp;

[0047] The output resonant branch is used to input the AC voltage to the ultraviolet light lamp so that the ultraviolet light lamp can be excited and enter a stable working stage after excitation.

[0048] Wherein, the input rectification branch includes: a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5, a sixth diode D...

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PUM

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Abstract

The invention discloses an ultraviolet lamp excitation method and device and a circuit. The ultraviolet lamp excitation method comprises the following steps: acquiring the direction of resonance current I1 of an ultraviolet lamp excitation circuit and parameters of the ultraviolet lamp excitation circuit; determining the resonant frequency of the ultraviolet lamp excitation circuit according to the direction of the resonant current I1 of the ultraviolet lamp excitation circuit and the parameters of the ultraviolet lamp excitation circuit; controlling the switching direction of a switching control branch of the ultraviolet lamp excitation circuit according to the resonant frequency of the ultraviolet lamp excitation circuit; and outputting the resonance voltage of the ultraviolet lamp excitation circuit so as to control the normal work of the ultraviolet lamp. By adopting the technical scheme of the invention, the ultraviolet lamp can be stably and reliably excited in the application of ultraviolet lamps with different power levels and different excitation voltages, so that the ultraviolet lamp can work normally.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an excitation method, device and circuit for an ultraviolet lamp. Background technique [0002] In the prior art, in the application of gas discharge power sources such as ultraviolet lamps and high-pressure sodium lamps, a reliable high-voltage excitation circuit is very important for the safe operation of the entire power system. The existing high-voltage excitation circuit is mainly composed of an inductive ballast. When the energized inductive ballast is disconnected, it will generate a high pulse voltage at both ends through self-inductance, which is superimposed with the power supply voltage and then added to both ends of the lamp tube to make the lamp The ionization of the inert gas inside the tube causes an arc discharge. [0003] In the implementation process of the existing ultraviolet lamp excitation circuit, the inventor found the following problems in the ...

Claims

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Application Information

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IPC IPC(8): H05B41/00H05B41/14
CPCH05B41/00H05B41/14
Inventor 沈建东常晓岳袁异贵
Owner NANTONG ELITE MARINE EQUIP & ENG INC JIANGSU
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