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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 in the direction of electric light sources, electrical components, lighting devices, etc., and can solve the problems that electronic ballasts cannot be applied to 400V/600W agricultural high-pressure sodium lamps, etc.

Inactive Publication Date: 2009-09-16
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

An electronic ballast suitable for 400V / 600W agricultural high-pressure sodium lamps, which relates to an electronic ballast for high-intensity gas discharge lamps, which aims to solve the problem that the existing electronic ballasts cannot be applied to 400V / 600W agricultural high-pressure sodium lamps . The 400V AC power supply is connected to the two power input terminals of the EMI filter (1) of the present invention, the voltage output terminal of the load matching network (5) is connected to the voltage input terminal of the 400V / 600W agricultural sodium lamp (6), and the single-chip microcomputer (IC2) is started The output terminal of the protection signal is connected to the other output terminal of the full-bridge rectifier circuit (2) through the start-up surge current limiting circuit (8), and the rectification effect signal output terminal of (5) is connected to the rectification terminal of (IC2) through the rectification effect detection circuit (7). Effect detection signal input. The electronic ballast of the present invention adopts a novel PFC mode, is specially used for 400V / 600W horticultural lighting high-pressure sodium lamps, can ensure normal operation of the lamps, and has a very high power factor (close to 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 Patents(China)
IPC IPC(8): H05B41/288
Inventor 徐殿国王茂均刘汉奎张相军
Owner HARBIN INST OF TECH