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High voltage sodium lamp electron ballast for photovoltaic street lamp lighting system

A technology for high-pressure sodium lamps and lighting systems, which is applied in the field of photovoltaic street lighting systems and high-pressure sodium lamp electronic ballasts. It can solve problems such as lowering efficiency, affecting insulation, life, and noise pollution, and achieves reductions in device volume and weight, and reduction in electric energy. The effect of transforming links and improving overall efficiency

Inactive Publication Date: 2006-03-29
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) The ballast inductor is bulky, and the iron loss and copper loss are large, which reduces efficiency and causes heat generation;
[0009] (2) There is noise pollution;
[0010] (3) Qihui high voltage frequently impacts the ballast inductor, which affects its insulation and life

Method used

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  • High voltage sodium lamp electron ballast for photovoltaic street lamp lighting system
  • High voltage sodium lamp electron ballast for photovoltaic street lamp lighting system
  • High voltage sodium lamp electron ballast for photovoltaic street lamp lighting system

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Embodiment Construction

[0044] Concrete working principle of the present invention sees accompanying drawing. figure 2 In the process, the battery output is boosted by a DC / DC circuit with a full bridge structure to obtain a 220V DC output. The control of the boost circuit is realized by the switching power supply integrated control chip SG3525A. When the battery output voltage fluctuates within a certain range, the control chip compensates for the voltage fluctuation by adjusting the duty ratio of the driving signal of the full bridge circuit, so as to maintain a stable voltage output. The 220V DC voltage is converted by a high-frequency inverter circuit to obtain a high-frequency AC square wave, which is used as a power supply for high-pressure sodium lamp high-frequency electronic ballasts.

[0045] The schematic diagram of the principle of high frequency electronic ballast is as follows: image 3 shown. By adding a DC pulse at a fixed time interval to the coil T12 coupled with the ballast ind...

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Abstract

The invention comprises a high-frequency ballast inductor and glow-starting circuit of the high-voltage sodium lamp. When a high-frequency DC square wave is put to the high-frequency ballast inductor, the glow-starting circuit under the action of the DC square wave can make the high-voltage sodium lamp start by controlling the induction coil of the high-frequency ballast inductor. The high-voltage sodium lamp current detection signal forming circuit can control the glow-starting circuit to make it stop working via the current detection signal produced by the current inductor series connected on the high-voltage sodium lamp.

Description

technical field [0001] The invention relates to high-pressure sodium lamp electronic ballast technology used in photovoltaic street lamp lighting systems, and belongs to the field of photovoltaic power generation technology, especially in photovoltaic street lamp lighting systems using high-pressure sodium lamps as light sources. Background technique [0002] Independent photovoltaic lighting systems have been gradually applied in remote areas without electricity. However, the existing independent photovoltaic lighting systems generally have low lighting power and are not suitable for functional lighting, such as traffic lighting. The high-pressure sodium lamp belongs to the high-pressure gas discharge lamp and is a kind of high-efficiency electric light source. Applying high-pressure sodium lamps to an independent photovoltaic lighting system can significantly improve its lighting efficiency, thereby forming a photovoltaic street lighting system. Photovoltaic lighting sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/288H05B41/292
CPCY02B20/204Y02B20/72Y02B20/00
Inventor 吴理博赵争鸣刘建政张强
Owner TSINGHUA UNIV
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