LED lighting test technology analysis - drive power reliability and energy efficiency into a key
In recent years, LED as a new energy-saving light source has won high investment enthusiasm and great attention in the world and China, and penetrated from the outdoor to the indoor lighting application market. China has also emerged tens of thousands of LED lighting companies. The main reason for letting LED lighting shine is its energy-saving, environmentally friendly, long-life, easy-to-control, maintenance-free features. However, it is ironic that we often hear that the LED lighting power supply itself directly drags down the LED lighting fixtures to become "longevity", which greatly increases the maintenance/use cost; or the efficiency of the driving power supply is not high, leading to LED lighting fixtures. The energy efficiency conversion ratio is not as high as imagined, or because the output current ripple is not well controlled, which affects the illumination quality, which makes the green energy-saving advantages of LED illumination greatly reduced, and even affects the market. Therefore, the improvement and maturity of the LED industry chain, driving power is also an important part of it. However, the current situation is that LED driver power supply design and quality limitations have increasingly become the "back legs" of the LED industry development, so power module manufacturers, lighting manufacturers are increasingly paying attention to the use of advanced test and measurement technology and solutions. In response to this situation, Tektronix is ​​unique, deep into the customer, in-depth understanding of the actual needs of the site, and developed a variety of solutions for LED vertical applications, designed to help more Chinese LED lighting manufacturers, drive power suppliers and Relevant quality inspection/certification institutions obtain more accurate test results and ensure the quality of LED drive power, thus promoting the healthy and prosperous development of China's LED lighting industry. Figure 1: Tektronix offers a wide range of test solution combinations for LED lighting applications. The reliability and energy efficiency of LED driver power is the key to testing So, what characteristics should the true high-quality LED driver power supply have or should it meet? Tektronix summarizes the following main aspects: 1. High reliability and longevity: The life of the driving power supply should be compatible with the life of the LED, especially for the driving power source like LED street light. Because it is installed at high altitude, the maintenance is inconvenient and the maintenance cost is also large; 2. High efficiency: This is especially important for structures where the power supply is installed in an LED luminaire. Since the luminous efficiency of the LED decreases as the temperature of the LED increases, the heat dissipation of the LED is very important. The power source has high efficiency, its power consumption is small, and the heat generated in the lamp is small, which reduces the temperature rise of the lamp, and is beneficial to delaying the light decay of the LED.
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