Guangzhou Liwin Electronic Technology Co., Ltd.

HID lights dimming technology brief

From: HID lights dimming technology brief
publisher: HID lights dimming technology brief
Time: 2014-07-17
Summary: HID lights dimming technology brief
HID lights dimming technology brief 
 
As society advances, energy conservation, environmental protection has become a trend in the lighting field, the use of new energy-saving light, energy efficient appliances and lighting to achieve the purpose of saving energy, has been widely accepted. But how to achieve energy savings through energy-efficient lighting design, has just been valued by the people. Dimming technology for energy efficient lighting is an effective method. New item corresponding thereto are constantly being developed. Place over a large area lighting in stadiums, urban roads and tunnels, using HID dimming design, from the practical to say this is unlikely. Now, with advances in technology, the development of electronic technology and electronic components, such dimming design has become feasible. We introduce three simple face-HID lights dimming technology and related products. 
An electronic ballast dimming 
Known, HID lamp electronic ballast can be easily designed to dimming ballast. Dimming principle: various sensors, adjusting the input to the electronic ballast control the DC level of the operating frequency, change the operating frequency, adjust the output power to the HID lamp to achieve dimming purposes. HID lamp electronic ballast dimming range: HPS output power is generally 50% to 100% (luminous flux of about: 30% to 100%). Metal halide lamp output 60% to 100% (luminous flux of about: 45% to 100%). According to foreign research data, dimming HID lamp electronic ballast, lamp start within 3 to 5 minutes, you must work at full power, there would be an early lamp blackening phenomenon, affecting the life of the lamp. Our preliminary comparative tests have proved this point. So HID lights dimming electronic ballasts should be considered in the design of this problem. When the lamp is started, no matter what the state of the electronic ballast in 3 to 5 minutes should automatically work at full power output. 
2 variable inductance dimming ballast 
Variable inductance dimming ballast, as the name suggests is to change the inductance value of the ballast, adjust the light output power to achieve dimming purposes. Works shown in Figure (1): inductive ballast with center tap, transform switch K, change ballast impedance output to a different power to the lamp dimmer. This dimming switch key to solve the problem, using ordinary switches (such as AC contactor) when switching, because switching speed is not fast enough, the lights will produce the phenomenon. This is not allowed in some places, even if allowed, after the lights go out several times to start up and power down effect on the life of the lamp is large. It must adopt electronic switches or current zero fast mechanical switch technology, to ensure that no power goes off when the lamp is switched. This dimming ballasts can only be used for high pressure sodium and pulse start metal halide lamp. Not applicable dimming range JLZKN sodium scandium metal halide lamp. HPS can drop power from 0 to 40%, metal halide 0-20% or 30% (depending on the metal halide species may be). Power decline increases under the influence of a number of factors (such as power fluctuation, distortion, etc.) may produce instability and arc lights phenomenon, especially metal halide. Works can be seen from the variable reactance ballast can only be given one or two dimming power, not continuous dimming. (2) is produced by our company NGZ-H-type high pressure sodium ballast and variable inductance control FD-1 type of work schematics. I end ballast rated power output, II terminal is 60% of the rated power output. When the power is turned on, the relay does not act, I ended output ballast, lamp operation at rated power, and power is given 50 / S timebase signal timing controller start time, three minutes later to give a signal the CD electronic trigger off (electronic triggers to automatically turn off lights when lit, damaging three minutes when the lights turned off), about 6 hours after (this time can be set according to user requirements), timing controller to relay J signal relay the signal provided by the galvanometer can guarantee - relay time around zero over the lamp current, which can ensure the lamp does not go out, but also extend the life of the relay contacts. After the relay, lamp ballasts II ended output to 60% of rated power, to complete the regular fixed dimming work. 
3 variable capacitance type CWA ballast dimming 
CWA ballast, also known as LC peak ahead ballasts, dimming principle of Figure (3). By changing the ballasts to the capacitance of the output power to reduce ballast dimming. This dimming circuit can be used for dimming high pressure sodium and pulse start metal halide lamp can also be used JLZKN sodium scandium metal halide dimming series (not electronic trigger). Dimming range and variable inductive ballast same, to be used when the same dimming capacitor voltage over zero off technique to protect the relay contacts due to large current impact damage. Also when the lamp is started at full power state, otherwise they will be available to the new ballast lamp ignition voltage VSS is too low, the lamp goes out during the boot process, does not work. 
(4) is a fixed capacitance-type three-level schematic of the power metal halide dimming changed. Uses a manual control dimming. By K1, K2 switch combination, the dimming power obtained three, Z is a galvanometer, A1, A2 is the zero voltage controller ensures dimming relay J1, J2 contact the zero voltage capacitance C3 hours off. The control circuit is simple and reliable, more suitable stadiums dimmer lighting. 
(5) is JLZL-C type I produced variable capacitance dimming ballasts and type FD-2 timing controller working schematic. Timing is mainly used for urban road lighting metal halide dimming. FD-2-based timing controller works with the FD-1 type the same, but reducing the electronic trigger section. The product can be loaded directly into the path luminaires. 
4 Dimming Control 
Common dimming control modes: delay control, carrier control, manual control, photoelectric control and far infrared sensor control, consisting of a block diagram in Figure (6): 
Manual control works: Dimming sent directly to the use of artificial appliances by adjusting potentiometer or switch control signal. Carrier control: a control signal transmitted from the transmitter via the carrier to a power line carrier receiver into the corresponding signal. Delay Control: When the lamp power, the timer starts counting to a certain value of the output signal set time to change the lamp power. Light sensor control: by day and night brightness changes, the output signal is a certain value. Far infrared sensor control: a far-infrared output value changes according to the detected signal to the human body. According to the principles of the several ways to control dimming can be drawn: Manual control mode and the carrier can be used for continuous dimming, and the timing, control and far-infrared light is generally used only for constant power control dimming (single-level dimming) . 
Five kinds of dimming for different lighting situations: stadium lighting dimming control with manual and carrier, can require continuous dimming. Manual control economy, stable, reliable, and line set up new venues for easy transformation of the old stadium. Carrier control method can be used to set up the line of the old stadium is not easy to transform. Urban road lighting dimmer, with the delay control is appropriate, after the lights full power 6-7 hours (can be set), automatically reduced to 60% of rated power operation. Tunnel lighting dimmer, available control (time process control) and light-controlled two ways to run at full power during the day, night drop-power operation. Some other special places available far infrared illumination dimming control methods, such as frequent access Lun library, when a person enters the lamp running at full power, the power to run down the left. 
5 HID work lamp dimmer lamp life issues 
HID lights dimming in the state to work, an issue we are most concerned about is the impact on the life of the lamp, which is to be discussed in two ways: First, the impact of the lamp itself; According to the information abroad, whether at work or at high frequencies frequency decreased power lighting, HID lights will not damage, that does not extend nor shorten lamp life. This conclusion is to be verified. The second is the impact on the lights dimming system; late in the life of the lamp, electrical dimming when full power can be normal lighting, while lowering power light does not work, there extinction, this invisible shortens the lamp life. Preliminary tests show dimming electronic ballasts for lamps in this respect little effect. Can work in the normal life of the lamp 80% to 90% of the time (with HID lights dimming amount of variety and size of). And change the inductance and variable capacitance type dimming only 60% to 70% of the normal life of the lamp, in particular metal halide lamp, high pressure sodium lamp on relatively small. This was mainly due to electronic ballast work no matter what the state can provide a small lamp drying time 0T and higher re-ignition voltage VSS. The time-varying inductance and capacitance-type variable dimming ballasts work in the state, these two parameters is difficult to do well, even so, we think that these two dimming remain practical value, because section power efficiency is much greater than the loss of life of the lamp. 
HID lamps large area lighting applications dimming technology has just started, to be further improved and perfected. We believe that with the advancement of technology in the near future, HID lights dimming technology as an important method of energy-efficient lighting will be widely used on China's green lighting contribute. 
Common sense: Ceramic Metal Halide 
High-intensity discharge lamps, light is an important member of the product and compared to incandescent lamps, high intensity discharge lamps has been greatly improved in the luminous efficiency. However, to maintain the quality of light and color stability and consistency is not so easy to do. So from the beginning of the 1960s, people have been able to develop an idea whether a set of metal halide and sodium good light color performance at an excellent luminous efficiency of the light source - a ceramic metal halide lamp. However, due to technical difficulties, such as ceramic materials, sealing technology and emission properties of the electrodes and other electrodes have been unable to get a good resolve, so until the early 1990s ceramic metal halide is still just a dream of people. However, in 1993 it successfully solves the sealing of ceramic and electrode developed for ceramic metal halide lamp made ​​breakthrough progress. In 1994, Philips Lighting successfully pioneered the ceramic metal halide lamps, people 30 years to realize the dream of becoming the power source is an important milestone in the development history. As a new paradigm in the field of lighting, embodies the human wisdom ceramic metal halide technology revolution has brought not only the world's lighting, but also for humanity brought Lixiangzhiguang. 
Technical Background 
The following is the hidden content: 
Metal halide discharge lamp of the wall material has an important impact on its performance. Typically the discharge tube wall material using quartz tube, scandium, or other rare earth and quartz bulb produces state reaction at high temperatures, the formation of silicates and silicon halides. Such a result of the reaction or a rare earth element silicate Sc formed on the envelope, resulting in reduction of the metal element, the color drift, and affects the transparency of the envelope; Si element would be separated from the melt in the tungsten electrodes, deterioration of the performance of the emitter electrode; Further, since the excess halogen, and the discharge difficult and harmful halogen cycle, corrosion of an electrode, so that the wall black, light is caused, in addition, some of the metal ions (such as sodium ions) in the ignition of the lamp life is gradually leaks through the wall, but also causes deterioration of the optical performance of the lamp. For these reasons limiting the quartz tube metal halide lamps to improve performance parameters and life, while Philips Ceramic Metal Halide discharge tube using polycrystalline alumina ceramic material, this ceramic metal halide lamp with conventional quartz metal halide phase ratio, has the following characteristics: 
     ※ sodium metal does not migrate to the outside through the ceramic discharge tube; 
     ※ ceramic tube at high chemical stability, even if aluminum metal elements are also not affect the performance of tungsten electrodes (because aluminum is difficult to dissolve in tungsten), so lamps have a longer life; 
     ※ high precision ceramic tube geometry, thus making a good light consistency of performance; 
     ※ arc tube can be operated at higher temperatures, there is more metal arc within the excited atoms, resulting in better color, higher luminous efficiency; 
     ※ discharge small size, high brightness light-emitting body; 
     ※ color temperature consistency, regardless of the supply voltage changes, changes in the position of the lamp and lamp life process, change the color temperature of the lamp is very small; 
     Product Features 
Philips Lighting has currently launched a 35W, 70W and 150W ceramic metal halide various series, and its discharge structure is shown in Fig. 
     Its performance characteristics of the light source is: 
     ※ long lamp life (9000-15000 hours) 
In general, low-power quartz halogen lamp life of 6000-9000 hours, and ceramic metal halide Because of these advantages, so their life can reach 9000-15000 hours than conventional quartz metal halide increased by 30% - -50%. 
     ※ higher luminous efficiency (> 90 lm / w) 
Currently, due to the global energy crisis facing the problem, so people attach great importance to efficient use of energy, is the same in the lighting industry, green lighting concept proposed in recent years in response to the efficient use of energy is put forward. So, although halogen lamps and incandescent lamps with excellent color rendering, but its ignition process in severe heat loss, shorter life expectancy, is obviously not an ideal green lighting products. The high efficiency ceramic metal halide lamp can be more effective in improving energy use, reduce the cost of property owners to use their luminous efficiency than halogen tungsten lamp, incandescent raise four to nine times while in the performance of light and color, and far better than quartz metal halide lamp, is a set of excellent light color performance and high luminous efficiency in a new light.
HID lights dimming technology brief 
 
As society advances, energy conservation, environmental protection has become a trend in the lighting field, the use of new energy-saving light, energy efficient appliances and lighting to achieve the purpose of saving energy, has been widely accepted. But how to achieve energy savings through energy-efficient lighting design, has just been valued by the people. Dimming technology for energy efficient lighting is an effective method. New item corresponding thereto are constantly being developed. Place over a large area lighting in stadiums, urban roads and tunnels, using HID dimming design, from the practical to say this is unlikely. Now, with advances in technology, the development of electronic technology and electronic components, such dimming design has become feasible. We introduce three simple face-HID lights dimming technology and related products. 
An electronic ballast dimming 
Known, HID lamp electronic ballast can be easily designed to dimming ballast. Dimming principle: various sensors, adjusting the input to the electronic ballast control the DC level of the operating frequency, change the operating frequency, adjust the output power to the HID lamp to achieve dimming purposes. HID lamp electronic ballast dimming range: HPS output power is generally 50% to 100% (luminous flux of about: 30% to 100%). Metal halide lamp output 60% to 100% (luminous flux of about: 45% to 100%). According to foreign research data, dimming HID lamp electronic ballast, lamp start within 3 to 5 minutes, you must work at full power, there would be an early lamp blackening phenomenon, affecting the life of the lamp. Our preliminary comparative tests have proved this point. So HID lights dimming electronic ballasts should be considered in the design of this problem. When the lamp is started, no matter what the state of the electronic ballast in 3 to 5 minutes should automatically work at full power output. 
2 variable inductance dimming ballast 
Variable inductance dimming ballast, as the name suggests is to change the inductance value of the ballast, adjust the light output power to achieve dimming purposes. Works shown in Figure (1): inductive ballast with center tap, transform switch K, change ballast impedance output to a different power to the lamp dimmer. This dimming switch key to solve the problem, using ordinary switches (such as AC contactor) when switching, because switching speed is not fast enough, the lights will produce the phenomenon. This is not allowed in some places, even if allowed, after the lights go out several times to start up and power down effect on the life of the lamp is large. It must adopt electronic switches or current zero fast mechanical switch technology, to ensure that no power goes off when the lamp is switched. This dimming ballasts can only be used for high pressure sodium and pulse start metal halide lamp. Not applicable dimming range JLZKN sodium scandium metal halide lamp. HPS can drop power from 0 to 40%, metal halide 0-20% or 30% (depending on the metal halide species may be). Power decline increases under the influence of a number of factors (such as power fluctuation, distortion, etc.) may produce instability and arc lights phenomenon, especially metal halide. Works can be seen from the variable reactance ballast can only be given one or two dimming power, not continuous dimming. (2) is produced by our company NGZ-H-type high pressure sodium ballast and variable inductance control FD-1 type of work schematics. I end ballast rated power output, II terminal is 60% of the rated power output. When the power is turned on, the relay does not act, I ended output ballast, lamp operation at rated power, and power is given 50 / S timebase signal timing controller start time, three minutes later to give a signal the CD electronic trigger off (electronic triggers to automatically turn off lights when lit, damaging three minutes when the lights turned off), about 6 hours after (this time can be set according to user requirements), timing controller to relay J signal relay the signal provided by the galvanometer can guarantee - relay time around zero over the lamp current, which can ensure the lamp does not go out, but also extend the life of the relay contacts. After the relay, lamp ballasts II ended output to 60% of rated power, to complete the regular fixed dimming work. 
3 variable capacitance type CWA ballast dimming 
CWA ballast, also known as LC peak ahead ballasts, dimming principle of Figure (3). By changing the ballasts to the capacitance of the output power to reduce ballast dimming. This dimming circuit can be used for dimming high pressure sodium and pulse start metal halide lamp can also be used JLZKN sodium scandium metal halide dimming series (not electronic trigger). Dimming range and variable inductive ballast same, to be used when the same dimming capacitor voltage over zero off technique to protect the relay contacts due to large current impact damage. Also when the lamp is started at full power state, otherwise they will be available to the new ballast lamp ignition voltage VSS is too low, the lamp goes out during the boot process, does not work. 
(4) is a fixed capacitance-type three-level schematic of the power metal halide dimming changed. Uses a manual control dimming. By K1, K2 switch combination, the dimming power obtained three, Z is a galvanometer, A1, A2 is the zero voltage controller ensures dimming relay J1, J2 contact the zero voltage capacitance C3 hours off. The control circuit is simple and reliable, more suitable stadiums dimmer lighting. 
(5) is JLZL-C type I produced variable capacitance dimming ballasts and type FD-2 timing controller working schematic. Timing is mainly used for urban road lighting metal halide dimming. FD-2-based timing controller works with the FD-1 type the same, but reducing the electronic trigger section. The product can be loaded directly into the path luminaires. 
4 Dimming Control 
Common dimming control modes: delay control, carrier control, manual control, photoelectric control and far infrared sensor control, consisting of a block diagram in Figure (6): 
Manual control works: Dimming sent directly to the use of artificial appliances by adjusting potentiometer or switch control signal. Carrier control: a control signal transmitted from the transmitter via the carrier to a power line carrier receiver into the corresponding signal. Delay Control: When the lamp power, the timer starts counting to a certain value of the output signal set time to change the lamp power. Light sensor control: by day and night brightness changes, the output signal is a certain value. Far infrared sensor control: a far-infrared output value changes according to the detected signal to the human body. According to the principles of the several ways to control dimming can be drawn: Manual control mode and the carrier can be used for continuous dimming, and the timing, control and far-infrared light is generally used only for constant power control dimming (single-level dimming) . 
Five kinds of dimming for different lighting situations: stadium lighting dimming control with manual and carrier, can require continuous dimming. Manual control economy, stable, reliable, and line set up new venues for easy transformation of the old stadium. Carrier control method can be used to set up the line of the old stadium is not easy to transform. Urban road lighting dimmer, with the delay control is appropriate, after the lights full power 6-7 hours (can be set), automatically reduced to 60% of rated power operation. Tunnel lighting dimmer, available control (time process control) and light-controlled two ways to run at full power during the day, night drop-power operation. Some other special places available far infrared illumination dimming control methods, such as frequent access Lun library, when a person enters the lamp running at full power, the power to run down the left. 
5 HID work lamp dimmer lamp life issues 
HID lights dimming in the state to work, an issue we are most concerned about is the impact on the life of the lamp, which is to be discussed in two ways: First, the impact of the lamp itself; According to the information abroad, whether at work or at high frequencies frequency decreased power lighting, HID lights will not damage, that does not extend nor shorten lamp life. This conclusion is to be verified. The second is the impact on the lights dimming system; late in the life of the lamp, electrical dimming when full power can be normal lighting, while lowering power light does not work, there extinction, this invisible shortens the lamp life. Preliminary tests show dimming electronic ballasts for lamps in this respect little effect. Can work in the normal life of the lamp 80% to 90% of the time (with HID lights dimming amount of variety and size of). And change the inductance and variable capacitance type dimming only 60% to 70% of the normal life of the lamp, in particular metal halide lamp, high pressure sodium lamp on relatively small. This was mainly due to electronic ballast work no matter what the state can provide a small lamp drying time 0T and higher re-ignition voltage VSS. The time-varying inductance and capacitance-type variable dimming ballasts work in the state, these two parameters is difficult to do well, even so, we think that these two dimming remain practical value, because section power efficiency is much greater than the loss of life of the lamp. 
HID lamps large area lighting applications dimming technology has just started, to be further improved and perfected. We believe that with the advancement of technology in the near future, HID lights dimming technology as an important method of energy-efficient lighting will be widely used on China's green lighting contribute. 
Common sense: Ceramic Metal Halide 
High-intensity discharge lamps, light is an important member of the product and compared to incandescent lamps, high intensity discharge lamps has been greatly improved in the luminous efficiency. However, to maintain the quality of light and color stability and consistency is not so easy to do. So from the beginning of the 1960s, people have been able to develop an idea whether a set of metal halide and sodium good light color performance at an excellent luminous efficiency of the light source - a ceramic metal halide lamp. However, due to technical difficulties, such as ceramic materials, sealing technology and emission properties of the electrodes and other electrodes have been unable to get a good resolve, so until the early 1990s ceramic metal halide is still just a dream of people. However, in 1993 it successfully solves the sealing of ceramic and electrode developed for ceramic metal halide lamp made ​​breakthrough progress. In 1994, Philips Lighting successfully pioneered the ceramic metal halide lamps, people 30 years to realize the dream of becoming the power source is an important milestone in the development history. As a new paradigm in the field of lighting, embodies the human wisdom ceramic metal halide technology revolution has brought not only the world's lighting, but also for humanity brought Lixiangzhiguang. 
Technical Background 
The following is the hidden content: 
Metal halide discharge lamp of the wall material has an important impact on its performance. Typically the discharge tube wall material using quartz tube, scandium, or other rare earth and quartz bulb produces state reaction at high temperatures, the formation of silicates and silicon halides. Such a result of the reaction or a rare earth element silicate Sc formed on the envelope, resulting in reduction of the metal element, the color drift, and affects the transparency of the envelope; Si element would be separated from the melt in the tungsten electrodes, deterioration of the performance of the emitter electrode; Further, since the excess halogen, and the discharge difficult and harmful halogen cycle, corrosion of an electrode, so that the wall black, light is caused, in addition, some of the metal ions (such as sodium ions) in the ignition of the lamp life is gradually leaks through the wall, but also causes deterioration of the optical performance of the lamp. For these reasons limiting the quartz tube metal halide lamps to improve performance parameters and life, while Philips Ceramic Metal Halide discharge tube using polycrystalline alumina ceramic material, this ceramic metal halide lamp with conventional quartz metal halide phase ratio, has the following characteristics: 
     ※ sodium metal does not migrate to the outside through the ceramic discharge tube; 
     ※ ceramic tube at high chemical stability, even if aluminum metal elements are also not affect the performance of tungsten electrodes (because aluminum is difficult to dissolve in tungsten), so lamps have a longer life; 
     ※ high precision ceramic tube geometry, thus making a good light consistency of performance; 
     ※ arc tube can be operated at higher temperatures, there is more metal arc within the excited atoms, resulting in better color, higher luminous efficiency; 
     ※ discharge small size, high brightness light-emitting body; 
     ※ color temperature consistency, regardless of the supply voltage changes, changes in the position of the lamp and lamp life process, change the color temperature of the lamp is very small; 
     Product Features 
Philips Lighting has currently launched a 35W, 70W and 150W ceramic metal halide various series, and its discharge structure is shown in Fig. 
     Its performance characteristics of the light source is: 
     ※ long lamp life (9000-15000 hours) 
In general, low-power quartz halogen lamp life of 6000-9000 hours, and ceramic metal halide Because of these advantages, so their life can reach 9000-15000 hours than conventional quartz metal halide increased by 30% - -50%. 
     ※ higher luminous efficiency (> 90 lm / w) 
Currently, due to the global energy crisis facing the problem, so people attach great importance to efficient use of energy, is the same in the lighting industry, green lighting concept proposed in recent years in response to the efficient use of energy is put forward. So, although halogen lamps and incandescent lamps with excellent color rendering, but its ignition process in severe heat loss, shorter life expectancy, is obviously not an ideal green lighting products. The high efficiency ceramic metal halide lamp can be more effective in improving energy use, reduce the cost of property owners to use their luminous efficiency than halogen tungsten lamp, incandescent raise four to nine times while in the performance of light and color, and far better than quartz metal halide lamp, is a set of excellent light color performance and high luminous efficiency in a new light.

Guangzhou Liwin Electronic Technology Co., Ltd

Previous:HID Xenon Installation Guide

Next:H4 swing angle lamp is the latest dual-optical design