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HID electronic ballast system supplied with A.C. bus with higher than 50Hz

An electronic ballast and AC busbar technology, which is applied in the field of high-pressure gas discharge lamp electronic ballast system, can solve the problems of low power factor of metal materials, starting current impact, low power utilization rate, etc., and achieve the elimination of power frequency flicker, The effect of reducing the start-up inrush current and improving the utilization rate of electric energy

Inactive Publication Date: 2004-04-21
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

It has many defects: (1) It is bulky, heavy, and consumes a lot of metal materials (2) The power factor is low, and the power utilization rate is low (3) The impact of the starting current is large (4) There is 50HZ power frequency flickering, and the lights usually follow the grid voltage fluctuate and change

Method used

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  • HID electronic ballast system supplied with A.C. bus with higher than 50Hz
  • HID electronic ballast system supplied with A.C. bus with higher than 50Hz

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Embodiment Construction

[0015] refer to figure 1 , the HID electronic ballast system powered by an AC bus bar above 50HZ of the present invention includes several inductive ballasts 3 with an iron core inductor 4 and a high voltage starter 5, a shared frequency conversion circuit 1 and a filter circuit 2 , the output end of the frequency conversion circuit 1 is connected to the input end of the filter circuit 2, the output end of the filter circuit 2 is respectively connected to the input ends of the iron core inductors 4 of several inductive ballasts through the AC bus, and the output of the iron core inductors 4 The terminal is connected with the input terminal of the high-voltage starter 5, and the output terminal of the high-voltage starter 5 is connected with the HID lamp.

[0016] In order to ensure uninterrupted power supply in the event of an accidental failure, it is best to connect a battery to the DC bus terminal of the frequency conversion circuit 1 . When the grid has power, the frequen...

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Abstract

he current invention concerns HID electronic ballast system featuring above 50 Hz AC busbar power supply, it consists of some inductance ballasts that have iron core inductance an high voltage starter, a sharing frequency conversion circuit and filtering circuit; the output of frequency conversion circuit is connected with the input of the filtering circuit, the output of filtering circuit is connected with iron core inductance of some inductance ballasts through the AC busbar, the output of iron core is connected with the input of the high voltage starter, the output of the high voltage starter is connected with HID lamp. The current invention has advanced features such as: With promoting the frequency the iron core becomes less and lighter, so can save a great of metal material; high power factor can improve the utilization of power; adopting soft startup function for frequency conversion circuit can reduce startup surge current, promoted frequency, eliminate power frequency flickers at 50 Hz; with output voltage-stabilizing function of frequency conversion circuit it can avoid the disadvantage of which the lamp light usually change with the voltage fluctuation of the power grid.

Description

technical field [0001] The invention relates to an electronic ballast system for a high-pressure gas discharge lamp (HID) powered by an AC busbar. Background technique [0002] High-pressure discharge lamp (HID) is an energy-saving electric light source, which has been widely used in traffic, municipal, factory and other lighting, and has the advantages of high luminous efficiency and long life. However, most of the current HIDs use traditional 50HZ inductive ballasts. Traditional 50HZ inductive ballasts include iron core inductors and high voltage starters. It has many defects: (1) It is bulky, heavy, and consumes a lot of metal materials (2) The power factor is low, and the power utilization rate is low (3) The impact of the starting current is large (4) There is 50HZ power frequency flickering, and the lights usually follow the grid voltage fluctuate and change. Contents of the invention [0003] The purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/14
Inventor 吕晓东何湘宁
Owner ZHEJIANG UNIV
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