Development trend of outdoor LED power supply

According to earlier estimates of industry research institutions, the continuation of the development momentum in 2014 rose in 2015, the domestic LED industry will continue to show rapid growth, industry scale reached 450 billion yuan, a growth rate of about 40%. And predicted that in the next three years, LED outdoor lighting will become one of the fastest growing segments of the field - 2015 outdoor lighting China LED market size will be closer to $15 billion. Last month, 2015 China LED situation in Guangdong Province, Huizhou city held a meeting on the outdoor LED driving power supply enterprise constant paive general manager Liu Hailang once said, in recent years, with the domestic and foreign LED public lighting further popularization, driven by the rapid growth of outdoor lighting, according to the forecast, in 2015 the global outdoor LED power output will reach $4 billion 300 million, in a rapid growth phase better. However, the LED market research findings have shown that the three quarter of 2015, Chinese LED outdoor lighting drive power market price dropped 25% compared to the same period last year, the power market price will decline further in the fourth quarter, the annual price decline will be more than 30%. In this regard, the day before the number of LED power enterprises have not fared well this statement. Power specifications power supply costs accounted for the proportion of the cost of the products increased year by year quality requirements more and more high in fact, but influenced by cost pressures and falling prices and other factors, so that the living environment of the domestic power enterprises this year with a deteriorating, the waves still think with bangs, the related enterprises in the supply chain, the ability of technological innovation, customer service service capability, will also be faced with many challenges. For example, first is the power source product specifications by the current specifications, and joint thread specifications, many kinds of control methods which is various; secondly, power costs accounted for the proportion of the cost of the products is increasing year by year; third, people have increasingly high demands on the quality of the products, the maintenance cost remains high demanding forced quality; finally, with the rise of wisdom around the city, intelligent industry has gradually become the trend. In addition, another domestic LED drive power R & D and production enterprises Song Sheng Electronics also pointed out that with the continuous development of these years, we can see this year's LED industry competition has entered the white hot stage, and began to usher in a new round of industry reshuffle, competition tends to ascend to a higher level. A wave of manufacturers will have to accept more challenges of survival. It is reported that up to LED power market today has become mature, tens of thousands of LED power supply manufacturers on the market, all kinds of LED power production is all kinds of outdoor LED power supply, the general development trend, but not open around the four points as follows: 1, to further reduce the cost as LED power electronics industry, reduce the cost is a commonplace talk of an old scholar. Among them, like IC, semiconductor power devices and other components may also have room for price cuts, bringing BOM cost reduction. However, the other, such as transformers, wire rod, radiator, shell and other parts, because of the cost of materials and rising labor costs, the price is hopeless, there is the possibility of rising costs. In such a situation, LED power supply to reduce costs, only in the production to improve the management level, and meticulous production, reduce waste, improve the yield. In product planning, need to strategically choose their own advantage of the product type, appropriate to do "subtraction", pooling resources, has the scale of the products, in order to further reduce the cost of procurement, production and development. In product research and development design, we need to improve the level, through the optimal design to reduce BOM costs and production costs. In addition, LED outdoor power supply can improve the working frequency, skilled use of FLYBACK, LLC, LCC, Boost, PFC, BUCK topology decreases the size of transformers and inductors, reduce the number of parts, and ultimately achieve the purpose of BOM. As well as the use of smaller devices to achieve efficiency and reliability requirements. The design of the EMC filter can be optimized to reduce the size of the filter. In the case of meeting the requirements of heat dissipation, the size of the radiator and the size of the overall structure of the power supply can be reduced, so as to achieve the maximum cost saving and the cost control of the extreme. 2, to further improve the efficiency of requirements according to understanding, with energy efficiency standards in the world, the terminal customers also LED power efficiency requirements. Energy efficiency standards for the market set the access threshold, under the conditions of cost control, improve power efficiency has become one of the most clear trends in the industry. How to improve efficiency, this is a very complex system engineering. First of all, the enterprise can through the X capacitor, Y capacitor, filter inductance impedance characteristics of the deep understanding of the design, the smaller the output line filter. Second, the enterprise should improve the cognition of the semiconductor power device, reasonable selection, optimize the design of its peripheral drive circuit and absorption circuit, in order to reduce the loss of power devices. Third, on the transformer design, in a certain size, how to achieve the optimal balance between the copper loss and iron loss, the enterprise also needs in-depth study and repeated experiments. For different input and output conditions, enterprises in the early stage of the topology selection, to make a suitable choice, is the basic premise of efficiency improvement. 3, to further improve the PF and THD PF (Power Facto, power factor) and THD (Total, HarmonicDistortion, total harmonic distortion) can have a serious impact on the quality of the electric network, due to harmonic may cause power grid