Control method for electronic ballast of HID light without electrolytic capacitor

A technology of electronic ballast and control method, which is applied to the use of gas discharge lamps, electric light sources, electrical components, etc., can solve problems such as wide application range, inability to use DC power supply, and sensitivity to AC frequency of inductive ballasts, and achieve Effect of Reliability Improvement

Inactive Publication Date: 2008-11-19
深圳唐微科技发展有限公司
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AI Technical Summary

Problems solved by technology

However, HID lamps cannot be directly connected to the power supply to light up like incandescent bulbs. They must go through the HID lamp ballast (inductive ballast or electronic ballast) that is compatible with the HID lamp before they can be connected to the power supply to light up the HID lamp. The price increase of copper and iron materials provides market space for the development of electronic ballasts for HID lamps. From various aspects of comparison, the inductive ballasts for HID lamps are in terms of power consumptio...

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  • Control method for electronic ballast of HID light without electrolytic capacitor
  • Control method for electronic ballast of HID light without electrolytic capacitor

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Embodiment approach

[0018] combine figure 1 The embodiment of the present invention is described as follows:

[0019] Judging from the function of electrolytic capacitors in traditional electronic ballasts for HID lamps with electrolytic capacitors, electrolytic capacitors are the main function, which is to convert the peak value of power + Δu 0 The charge stored in the electrolytic capacitor is called "charging". Then, in the power sag trough -Δu 0 When the charge is released, it is called "discharge"; the electrolytic capacitor uses "charge" to absorb the peak ripple, and uses "discharge" to fill the valley ripple, which plays a role in smoothing the ripple of the DC bus voltage U0.

[0020] The general passive equivalent is to replace the short-life electrolytic capacitor with electrolyte with a micro-method with a long-life capacitor without electrolyte. This equal-capacitance replacement method is the most basic but negative strategy for realizing non-electrolytic capacitors. One, treatin...

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Abstract

The invention provides a method for controlling an electronic ballast which is matched with a HID light and has no electrolytic capacitor, the technical proposal adopts a single chip microcomputer software, to generate a multiphase high-frequency wave pulse packet, a plurality of groups of high-frequency square wave impulse with different phases are used to respectively control the and the of a multi-phase electronic power electronic switch, and to realize an active method for restraining dc bus ripple by using active power differential electric energy to substitute the traditional method of restraining the dc bus ripple through by using passive electrolytic capacitor storage charge through realizing a multi-phase high frequency APFC (active power factor Correction) method. Bu adopting the technical proposal, the reliability of the HID light electronic ballast is greatly improved, and the performance price ratio surpasses the traditional HIG light electronic ballast with electrolytic capacitor.

Description

technical field [0001] The invention relates to the field of switching power supplies, in particular to a control method for an electronic ballast without an electrolytic capacitor specially matched to an HID lamp. Background technique [0002] Electric light sources have experienced the era of the first generation of incandescent bulbs that radiate heat from tungsten filaments to incandescent high temperature; the second generation is the era of fluorescent lamps (including straight tube fluorescent lamps and energy-saving lamps) with light efficiency several times higher than that of incandescent bulbs; the third generation is The era of point light source high-intensity discharge lamps (HID lamps) with good light control and high light efficiency; the fourth generation is the era of light-emitting diodes (LED lamps). [0003] Incandescent light bulbs have been eliminated by the tide of energy saving and emission reduction due to their low light efficiency. The world has ...

Claims

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Application Information

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IPC IPC(8): H05B41/26H05B41/288
CPCY02B20/202Y02B20/00
Inventor 甘同王桂风王桂光
Owner 深圳唐微科技发展有限公司
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