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Adaptive driver for dielectric barrier discharge (DBD) lamp

A dielectric barrier discharge and driver technology, applied in the field of gas discharge lamps and dielectric barrier discharge lamps

Inactive Publication Date: 2008-10-01
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This solution and the one described above do have the disadvantage that only the abnormal discharge is detected qualitatively and the operation of the lamp is stopped

Method used

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  • Adaptive driver for dielectric barrier discharge (DBD) lamp
  • Adaptive driver for dielectric barrier discharge (DBD) lamp
  • Adaptive driver for dielectric barrier discharge (DBD) lamp

Examples

Experimental program
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Effect test

Embodiment Construction

[0047] exist figure 1 In , the equivalent circuit used to describe the electrical environment of the lamp is shown. It includes: the known parasitic impedance value of the electrical connection between the lamp and the driver Zp1 and Zp2; the known parasitic impedance of the lamp housing Zh1 and Zh2; the known capacitance of the dielectric barrier Zb1 and Zb2; and the known capacitance of the discharge volume Cd . Given all these parameters, the time-dependent discharge resistance DR and / or the time-dependent (instantaneous) discharge power DP can then be calculated. If Ud is the time-dependent, calculated voltage across the discharge body, and Id is the time-dependent, calculated current across the discharge body, then the following relationship holds:

[0048] DR=Ud / Id DP=Ud*Id

[0049] The calculation of Ud and Id is based on the solution of the equivalent circuit representing the electrical properties of the lamp, the lamp envelope and the electrical connection between ...

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PUM

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Abstract

The present invention relates to an adaptive driver for driving a gas discharge lamp and a method for operating a gas discharge lamp driven by an adaptive driver, especially a capacitive gas discharge lamp and more especially a dielectric barrier discharge (DBD) lamp in a permanent optimized mode comprising the steps: measuring, sensing, and / or detecting a signal representing the key values of the output of the driver (current, power, voltage, frequency), calculating at least one actual reference value for the quality of the discharge of said lamp, comparing said actual reference value to at least one predefined value for an optimized operation mode of said lamp, and adjusting a power supply according to the result of said comparing.

Description

technical field [0001] The invention relates to an adaptive driver for a gas discharge lamp, in particular for a capacitive gas discharge lamp, more particularly for a dielectric barrier discharge (DBD) lamp, and thus a method, so that Drive connected lights in a permanently optimized way. [0002] Gas discharge lamps, capacitive gas discharge lamps and especially DBD lamps are characterized in that electrical energy is capacitively coupled into the discharge volume; at least one dielectric barrier layer is employed between the outer electrode and the discharge body (discharge). In particular, the invention relates to various types of gas discharge lamps with athermal (cold) plasma. [0003] In order to achieve efficient coupling of energy across the dielectric barrier layer (one or two or more), the electrical energy is preferably provided in the form of electrical pulses with a large voltage slope and a pulse repetition rate in the order of 10 kHz...1 MHz. The plasma excit...

Claims

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Application Information

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IPC IPC(8): H05B41/28
CPCY02B20/22H05B41/2806Y02B20/00
Inventor M·M·A·布卢克克斯G·格鲁尔W·谢恩
Owner KONINKLIJKE PHILIPS ELECTRONICS NV