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Power supply with power factor compensation function for high-power LED lamp

A power factor compensation and high-power technology, which is applied in the field of high-power LED lamp power supply, can solve problems such as current imbalance, LED tube damage, heat damage, etc.

Inactive Publication Date: 2013-02-06
XIANTAN HULIANAN ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current will increase more in the high-current branch, which will cause the local temperature of the lamp to rise, which in turn will cause the current to become more unbalanced, so that the local temperature will continue to rise. Finally, a LED tube damage can cause local or all LED tubes to be electrically damaged or thermally damaged.
This damage mechanism is more serious than the first damage above

Method used

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  • Power supply with power factor compensation function for high-power LED lamp
  • Power supply with power factor compensation function for high-power LED lamp
  • Power supply with power factor compensation function for high-power LED lamp

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0018] Such as Figure 4 As shown, it is a structural schematic diagram of a high-power LED lamp power supply with power factor compensation in the present invention, which is marked by system 400 . It is composed of a certain number of identical but independent AC-DC power supply modules, respectively marked as 401, 402, 403, ... and so on. The number of module power supplies in the lamp can be increased or decreased according to the design requirements, and the AC input terminals of each module power supply are connected in parallel to the ports of the AC voltage source. The ground wire of the AC input terminal and the ground wire of the output terminal of the module power supply (401, 402, 403, ... etc.) are directly connected to the housing of the lamp to meet safety regulations. The output of each module power supply is a DC output, ...

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PUM

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Abstract

The invention relates to a power supply with a power factor compensation function for a high-power LED (Light-Emitting Diode) lamp. The power supply comprises an AC power supply, a plurality of AC-DC power supply modules and high-power LED strings, wherein AC input ends of all the AC-DC power supply modules are connected with a port of an AC voltage source; earth wires of the AC input ends and earth wires of output ends of module power supplies are directly connected with a lamp housing; a DC output end of each module power supply is connected with each high-power LED string; and the AC-DC power supply modules adopt single-stage AC-DC module power supplies with the power factor compensation. According to the power supply, the single-stage AC-DC module power supplies with the power factor compensation are adopted to supply power for the LED strings respectively, so that the reliability of the high-power LED lamp is improved greatly, and the service life of the high-power LED lamp is prolonged greatly.

Description

[0001] This application is a divisional application with application number 201010540458.8, application date November 11, 2010, and invention title "a high-power LED lamp power supply with power factor compensation". technical field [0002] The invention relates to a power supply for LED lamps, more specifically a high-power LED lamp power supply with power factor compensation. Background technique [0003] At present, based on the rapid development of modern semiconductor technology, high-power LED lamps have been widely used in business and industry in recent years. The main advantage of applying high-power LED lamps in lighting systems is that they can greatly save energy and reduce emissions during their entire lifespan, which will have a profound impact on the long-term economic development of our country. When used properly, high-power lighting fixtures can last much longer than traditional high-pressure sodium lamps. However, because high-power LED lights are semico...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCY02B20/42Y02B20/40
Inventor 罗耀光
Owner XIANTAN HULIANAN ADVANCED TECH