Electronic ballast applicable to 400V/600W high voltage sodium lamps for agricultural use

A technology for electronic ballasts and high-pressure sodium lamps, which is applied to electric light sources, electrical components, lighting devices, etc., can solve the problem that electronic ballasts cannot be applied to 400V/600W agricultural high-pressure sodium lamps.

Inactive Publication Date: 2006-07-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing electronic ballast cannot be applied to 400V / 600W agricultural high-pressure sodium lamps, so the present invention provides an electronic ballast suitable for 400V / 600W agricultural high-pressure sodium lamps

Method used

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  • Electronic ballast applicable to 400V/600W high voltage sodium lamps for agricultural use
  • Electronic ballast applicable to 400V/600W high voltage sodium lamps for agricultural use
  • Electronic ballast applicable to 400V/600W high voltage sodium lamps for agricultural use

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specific Embodiment approach 1

[0007] Specific implementation mode one: see figure 1 , the specific embodiment consists of EMI filter 1, full bridge rectifier circuit 2, power factor correction circuit 3, high frequency half bridge inverter circuit 4, load matching network 5, 400V / 600W agricultural sodium lamp 6, start inrush current limiting circuit 8 , single-chip microcomputer IC2, drive control circuit 9 and rectification effect detection circuit 7, the two output terminals of the 400V AC power supply are respectively connected to the two power supply input terminals of the EMI filter 1, and the two output terminals of the EMI filter 1 are respectively connected to the full bridge The two input ends of the rectification circuit 2, one output end of the full bridge rectification circuit 2 are grounded, the other output end of the full bridge rectification circuit 2 is connected to the DC power input end of the power factor correction circuit 3, and the output end of the power factor correction circuit 3 ...

specific Embodiment approach 2

[0008] Specific implementation mode two: see figure 1 The difference between this embodiment and Embodiment 1 is that it also includes a sodium lamp current detection circuit 10, the output end of the current detection signal of the high-frequency half-bridge inverter circuit 4 is connected to the input end of the sodium lamp current detection circuit 10, and the sodium lamp current The output end of the detection circuit 10 is connected to the current detection signal input end of the single-chip microcomputer IC2. Other components and connections are the same as those in the first embodiment. The real-time monitoring of the current in the sodium lamp is realized by using the single-chip microcomputer IC2.

specific Embodiment approach 3

[0009] Specific implementation mode three: see figure 1 The difference between this embodiment and Embodiment 1 is that it also includes a sodium lamp voltage detection circuit 11, the voltage input end of the 400V / 600W agricultural sodium lamp 6 is connected to the input end of the sodium lamp voltage detection circuit 11, and the sodium lamp voltage detection circuit 11 The output terminal is connected to the voltage detection signal input terminal of the single chip microcomputer IC2. Other components and connections are the same as those in the first embodiment. The real-time monitoring of the voltage in the sodium lamp is realized by using the single-chip microcomputer IC2.

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Abstract

The invention relates to an electric amperite of 400V/600W farm high-voltage sodium lamp, which provides an electric sodium lamp of high intensity gas discharge lamp, while the electric sodium lamp can not be used in 400V/600W farm high-voltage sodium lamp by present technique. Wherein, the 400V alternating current power source is connected to two power inputs of inventive EMI filter (1); the voltage output of load match network (5) is connected to the voltage input of 400V/600W farm sodium lamp; the initial protective signal output of single chip (IC2) via the initial impulse current limit circuit (8) is connected to another output of full-bridge rectification circuit (2); the rectification signal output of (5) via the rectification detection circuit (7) is connected to the rectification detected signal input of (IC2). The inventive electric amperite uses new PFC which is specially used in 400V/600W farm lighting high-voltage sodium lamp with high power factor (near 1).

Description

technical field [0001] The invention relates to an electronic ballast for a high-intensity gas discharge lamp. Background technique [0002] High-intensity discharge lamps play an important role in today's lighting systems. High-intensity gas discharge lamps have many advantages such as high luminous efficiency, long life and wide power range (from several watts to hundreds of kilowatts), and have become the third generation of electric light sources after incandescent lamps and fluorescent lamps, and are widely used in squares and docks , workshops and roads and other indoor and outdoor lighting environments. During the lighting process of high-intensity gas discharge lamps, light is generated when the electron beam passes through the gas medium, but because high-intensity gas discharge lamps have negative impedance characteristics, an electronic ballast is required to cooperate with it and provide an appropriate limiting voltage , Current measures. Common electronic bal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/288
Inventor 徐殿国王茂均刘汉奎张相军
Owner HARBIN INST OF TECH
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