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A hybrid ignition method for hid lamp electronic ballast

An electronic ballast and electric current technology, applied in the direction of electric light sources, electrical components, lighting devices, etc., can solve the problems of difficult to reliably start high-power metal halide lamps, high operating frequency of electronic ballasts, narrow adjustable range of intensity, etc. problems, to achieve the effect of improving ignition reliability, preventing overcurrent, and improving the reliability of the whole machine

Inactive Publication Date: 2016-06-15
HUNAN INTELLIGON SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-power HID lamps, in order to improve the efficiency of the whole machine, the operating frequency of electronic ballasts is high, the ignition inductance is small, and its intensity adjustable range is narrow. It is difficult to reliably start high-power metal halide lamps with DC low-frequency pulse ignition methods.

Method used

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  • A hybrid ignition method for hid lamp electronic ballast
  • A hybrid ignition method for hid lamp electronic ballast
  • A hybrid ignition method for hid lamp electronic ballast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like Figure 5 and Figure 9 As shown, the circuit connection description of this embodiment is the same as that in the invention patent with the patent number "201310008933.0" figure 2 and Image 6 , the difference is that the two ends of the patented HID lamp 5 of the present invention are connected in parallel with the resonant capacitor C5.

[0038] like Figure 5 In the illustrated embodiment, the software workflow of the patented hybrid ignition method of the present invention is as follows:

[0039] S1. The microcontroller 1 generates a PWM pulse signal that drives the power switch tubes Q1 and Q2, and the resonant frequency sweeping process starts;

[0040]S2. Detect the current flowing through R3 through the pulse feedback circuit 3 to determine whether the ignition is successful; if successful, go to step S5, if unsuccessful, go to step S3;

[0041] S3. The microcontroller 1 generates a PWM pulse signal that drives the power switch tube Q2, and the DC lo...

Embodiment 2

[0050] like Image 6 and Figure 10 As shown, the specific connection method of the circuit is as follows: capacitor C1 and resistor R1 are connected in parallel, one end of the parallel connection is connected to one end of inductor L1 and one end of HID lamp 5, and the other end is connected to VDC; one end of the inductor L21 is connected to one end of the inductor L22, the silicon One end of the two-terminal element SIDAC is connected to one end of the lamp 5, the other end of the inductor L21 is connected to one end of the power switch Q1 and one end of the power switch Q2, the other end of the inductor L22 is connected to one end of the capacitor C2, and the silicon two-terminal element The other end of the SIDAC is connected to the other end of the resistor R2 and the other end of the capacitor C2; the other end of the power switch Q1 is connected to VDC, the other end of the power switch Q2 is connected to one end of the resistor R3, and the other end of the resistor R...

Embodiment 3

[0052] like Figure 7 and Figure 11 As shown, compared with Embodiment 2, the ignition trigger device is changed, and the thyristor trigger circuit is used instead of the silicon two-terminal element SIDAC trigger. The thyristor trigger circuit includes: capacitor C21, resistor R4, resistor R5, low-voltage silicon two-terminal element D303, and thyristor SCR. The circuit ignition trigger works as follows: when the ignition circuit is working, VDC forms a loop through the resistors R1, R2, R3, R4, R5, the inductors L1, L21 and the power switch tube Q2. When the voltage on the resistor R5 exceeds the trigger voltage of D303 ( 28V~32V), D303 is turned on, thereby triggering the thyristor SCR, that is, replacing the function of the silicon two-terminal element SIDAC in Example 2. The working principle of other parts is the same as that of Embodiment 2.

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Abstract

The invention relates to a mixed ignition method of an HID lamp electronic ballast, in particular to a mixed ignition method which integrates the advantages of a series resonance ignition method and DC low-frequency pulse ignition method and eliminating the disadvantages of the two methods. According to the mixed ignition method, the pulse conducting technology is adopted to achieve the purposes that the voltage amplitude is controllable in resonance sweep-frequency ignition, and overflowing of a lamp tube after being ignited successfully is prevented, resonance voltages are effectively reduced, and ignition reliability is improved.

Description

technical field [0001] The invention relates to an ignition method for an electronic ballast of an HID lamp, in particular to a hybrid ignition method which combines the advantages of series resonance ignition and DC low-frequency pulse ignition while eliminating the disadvantages of the two methods. Background technique [0002] HID lamps (high-intensity gas discharge lamps) are widely used in the field of public lighting due to their high efficiency, reliability, fog penetration, and low cost. HID lamp is a kind of high-intensity discharge lamp, which requires high-voltage ignition before it can be started normally. The "volt-ampere" performance after starting is negative resistance, so a current limiting device needs to be connected in the working circuit of the HID lamp, which is usually called for the ballast. With the development of science and technology and the urgent need for energy saving and emission reduction, electronic ballasts with high efficiency and energy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/36H05B41/288
CPCY02B20/00
Inventor 龚明甫周锋廖粤武
Owner HUNAN INTELLIGON SYST
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