The space for the LED lighting market is huge. In 2015, the total market for LEDs was 299 million US dollars, and in 2016 it will reach 380 million US dollars. In the field of outdoor high-power power, the market share in 2015 was 4.5 billion US dollars, and in 2016 it will reach 6 billion US dollars.
The three major features of the power supply include: 1. There are many specifications for the power supply, such as many current specifications, many specifications for the wire ends and connectors, and many types of control methods. 2. The cost of the power supply accounts for the annual increase in the cost of the lamps. 3. The quality requirements for the products are higher. The higher it is. According to reports, LED outdoor lighting has a variety of requirements for power supplies. In many applications, the requirements for wire and connector specifications are different, resulting in a continuous increase in the number of power supplies, including smart power, smart lighting, and the variety of dimming methods and control methods required.
The cost of power supplies in luminaires is increasing. The price of light source products has fallen sharply over the years, and structural parts depend on changes in the price of some metals. The technical content of the power supply is very high. There are more than 200 electronic components in a power supply. The cost is basically close to the bottom line position, because the power supply has been purchased at a lower price.
Nowadays, the requirements of the whole application for power supply products are getting higher and higher. The warranty of the lamps and lanterns was 5 years ago. Now it has become more and more prominent in the requirements of 8 years and 10 years. The warranty on the light source is no problem, but the power supply is not affected by some electronic components and cannot be used in harsh environments for many years. The life of the luminaire mainly depends on the power supply product. Now the life of the power supply product is mostly 5 years. In fact, after the luminaire is damaged, 90% of the reason for the analysis is due to the power supply problem. The price of the power supply product itself is not very high, but the replacement The cost is very high.
In this context, several new requirements for the next generation of LED lighting drivers are described . In order to ensure energy-saving effect, it is necessary to provide dimming function, realize intelligent dimming of circuit or single lamp, ensure illumination with minimum energy consumption, and save power obviously. To extend the life of the lamp, it is necessary to effectively suppress the voltage fluctuation of the power grid. The life of the lamp can usually be extended by more than 2 times. The power supply has high stability and long service life, which can fully avoid the impact on the life of the lamp due to power supply damage. For the convenience of management and maintenance, it is necessary to check the system operation status at any time through the monitoring center, preset various strategies, and the system automatically executes.
The urban public lighting renovation/intelligent lighting project construction adopts EMC/PPP mode, which has huge investment, requires excellent power quality and reduces the number of resets; intelligent dimming throughout the city, realizes dimming control of loop or single lamp; realizes low power consumption , low-cost dimming mode; realize time-division dimming, realize human traffic monitoring and dimming, etc.; in addition, the delivery cycle is as short as possible, and centralized power supply solutions. At the same time, two typical application scenarios in the lighting system, the first is to use split scenes, with rich experience in outdoor power application, focusing on customer concerns; the second is to use centralized power supply scenarios for different customers. Tailored, customized power system solutions. For the communication room and base station, the centralized power supply is adopted. It is understood that the application areas of port lighting, stadium high pole lighting, and some large public lighting places have adopted a centralized power supply scheme, that is, all the functions of the power supply DC are sinked to the DC power supply, which is convenient for management. And maintenance, its energy efficiency will also be improved. Each power supply that is centrally powered can be monitored and managed over the network. Because this solution is derived from the communication power supply, and the communication power supply is uninterrupted and easy to maintain, the centralized power supply solution for applying the communication power supply can be used to transplant the lighting power supply to different areas as long as it is transplanted into the lighting system. Centralized management. He analyzed that the basic principle is to convert the mains into 270 volts of mainstream high-voltage direct current, and then through the DC module to achieve different luminaire matching functions, different wattages on the electronic voltage requirements are different, through the second level DC/DC is implemented.
The core advantage of a centralized power solution is that it is easy to manage and maintain, and it is energy efficient. The advantage of centralized power supply lies in centralized management and control. If the control is removed, the cost of initial investment will increase, but in the long run, energy can be saved, and the energy cost saved has greatly exceeded the first time. Equipment investment can basically increase efficiency by more than 2%.
According to reports, when the size of the lighting system is large enough, in order to provide power input more conveniently, a centralized power supply scheme can be adopted, power distribution can be rationally performed, and power supply management and dimming control of the lighting system can be unified. While explaining the working principle of the system, he said that the system can save huge economic benefits even by saving 29.9% of the investment cost. In terms of assisting the development of the Internet of Things, he also mentioned the constant power IoT power supply that enables the realization of the smart city lighting integrated operation system, and explained its technical innovation and commercial value in detail.
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