Digital control LED street lamp driving power source

A LED street lamp, digital control technology, applied in the direction of electric light source, light source, electric lamp circuit layout, etc., can solve the problem of low power factor, achieve the effect of reducing loss, high efficiency, and high efficiency

Inactive Publication Date: 2014-09-03
XIAN UNVERSITY OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the nonlinearity of the circuit, the input current and voltage of this type of power supply are not sinusoidal waves in the same phase, and contain a large number of harmonics, resulting in low power factor

Method used

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  • Digital control LED street lamp driving power source
  • Digital control LED street lamp driving power source
  • Digital control LED street lamp driving power source

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Embodiment Construction

[0021] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0022] The digital control LED street lamp drive power supply of the present invention includes an input interference suppression module, a switching power supply module, and an LED constant current control module.

[0023] Suppress the electrical shock conducted by the power line, and then convert the rectified pulsating voltage into a stable DC high voltage of 400V through the PFC circuit, and convert the primary high-voltage DC into a secondary high-frequency low-voltage AC through DC-DC conversion , and then rectified and filtered to obtain direct current and provide it to the LED constant current control module.

[0024] The input interference suppression module includes a lightning surge protection circuit and an EMI filter; the lightning surge protection circuit includes an anti-surge circuit and a ...

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Abstract

The invention relates to a digital control LED street lamp driving power source which comprises an input interference rejection module, a switch power source module and an LED constant-current control module. The input interference rejection module is used for restraining electrical impact from a power source line, then the rectified pulsating voltage is converted into 400 V stabilization direct current high voltage through a PFC circuit, the primary high voltage direct current is converted into the secondary high frequency low voltage alternating current through DC-DC converting, the direct current obtained through rectification and filtering is provided for the LED constant-current control module. According to the LED driving power source with the high power factor, the output voltage is high but the output current is smaller relatively, so that loss of switch elements can be reduced, high efficiency can be achieved without synchronous rectification, the current stress requirement of elements is lowered without increasing voltage stress of the elements, and cost is saved.

Description

technical field [0001] The invention relates to the field of driving power supply, in particular to a digitally controlled LED street lamp driving power supply. Background technique [0002] At present, under the background that all countries in the world attach importance to energy saving and emission reduction, LEDs are gradually used in the field of general lighting because of their environmental protection, energy saving, long service life, high brightness, safety, stability, etc., and road lighting is one of them. Great potential application direction. High-power LED lighting equipment has been widely recognized by the markets of various countries, and is gradually showing a trend of replacing traditional lighting. [0003] High-power LED street lamp driving power is the driving power of LED lighting equipment, which is a kind of switching power supply. At the AC input end of the switching power supply, a rectification and filtering circuit composed of diodes and larg...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor刘霞孙静张伟古玉峰白刚
OwnerXIAN UNVERSITY OF ARTS & SCI