Analysis Of The Next Generation LED Lighting Drive Technology

- Aug 22, 2018-

The space in the LED lighting market is huge, with $299 million in the entire LED market in 2015 and $380 million in 2016.

In the outdoor high-power power sector, the market share was $4.5 billion in 2015 and will reach $6 billion in 2016.




Three major features of power supply products include: 1. Power supply products have a wide range of specifications, such as multiple current specifications, multiple line and joint specifications, and various control methods; 2.

2. The proportion of power cost in the cost of lamps increases year by year;

3. Higher and higher requirements for product quality.

It is reported that LED outdoor lighting has various requirements for power supply.

In many applications, the requirements of wire and connector specifications are also different, leading to a continuous increase in the types of power supply, including intelligent power supply, intelligent lighting, various dimming and control modes required.



The cost of the power supply in the luminaires is increasing. The price of the light source products has fallen dramatically over the years. The structural parts depend on the price of some metals.

The technical content of power source is very high, there are more than 200 electronic components in a power source, its cost is basically close to the bottom line at present, because the power source has been purchased at a lower price.



Now, the requirements of the whole application for power products are higher and higher. The warranty of lamps used to be 5 years, but now the requirements of 8 years and 10 years have been more and more prominent.

There is no problem with the warranty of the light source, but the power supply cannot be used for a long time in a relatively harsh environment due to the influence of some electronic components.

The life of the lamp is mainly determined by the power supply product. Currently, the life of the power supply product is mostly 5 years. In fact, 90% of the reason analyzed after the lamp is damaged is due to the power supply problem.



In this context, several new requirements for the next generation LED lighting drive are described.

In terms of energy saving effect, it is necessary to provide dimming function to realize the intelligent dimming of the loop or single lamp, and guarantee illumination with the least energy consumption and obvious energy-saving effect.

In terms of extending the life of lamps and lanterns, the voltage fluctuation of power grid should be suppressed effectively, and the life of lamps and lanterns can be extended more than 2 times.

High stability of power supply, long life, fully avoid the impact of power damage on the life of lamps.

For the convenience of management and maintenance, the operation of the system should be checked at any time by the monitoring center, and various policies should be preset for the system to execute automatically.



The construction of urban public lighting renovation/smart lighting project mostly adopts EMC/PPP mode, which requires huge investment, high quality power supply and less reset times.

The whole city intelligent dimming, realize the dimming control of the loop or single light;

Realize low power consumption and low cost of dimming;

Realizing time-division dimming, realizing human traffic monitoring dimming and so on;

In addition, the delivery cycle is as short as possible, and the centralized power supply solution.

At the same time, there are two typical application scenarios in the lighting system. The first one is to use split scenes to focus customers' concerns with abundant application experience of outdoor power.

The second is to use the centralized power supply scenario to customize and customize power system solutions for different customers.

Like communications of the computer room, base station, the use of centralized power supply.

It is understood that the centralized power supply scheme has been adopted in port lighting, stadium lighting and other application fields, as well as some large public lighting places. In other words, all the functions of power DC are sunk into DC power supply, which is convenient for management and maintenance, and its energy efficiency will be improved.

Each power source of centralized power supply can be monitored and managed through the network.

Since this solution is derived from the communication power supply, which is uninterrupted and easy to maintain, the centralized power supply solution of the communication power supply can be used to manage the lighting power in different areas as long as it is transplanted into the lighting system.

He analyzed that the basic principle is to convert the municipal power into the high-voltage direct current of 270-volt mainstream, and then realize the matching function of different lamps through the DC module. Different wattage has different requirements on the electronic voltage, which is realized through the DC/DC of the second level.



The core advantage of centralized power supply solution is that it is easy to manage and maintain and high energy efficiency.

The advantage of centralized power supply lies in centralized management and control. If the control part is removed, the cost of initial investment will increase. However, in the long run, energy savings can be reduced.



According to the introduction, when the lighting system scale is large enough, in order to provide power input more conveniently, the centralized power supply scheme can be adopted to reasonably allocate power, and the power supply management and dimming control of the lighting system can be unified.

While explaining how the system works, he said the system can even save 29.9 percent of the investment cost and gain huge economic benefits.

In terms of facilitating the development of the Internet of things, he also mentioned the constant power Internet of things power that could make the realization of comprehensive operation system of smart city lighting possible, and explained in detail its technological innovation and commercial value.