Contrast to traditional lighting technology, LED street light has higher efficiency and longer lifetime. Due to the specific quality of it, this kind of LED light becomes the first choice of the street light bulb type.
No matter in which country, street light is the vastest use in urban lighting and it is a kind of consumables. When drivers running their car on the road, street light bring a bright view for them and prevent the traffic accident. If the street light is broken, it not only influence drivers’ moods but also increases the risk of traffic accident. A good quality of street light is the most important. So LED light comes into the view of public.
Actually for street light, higher efficiency and longer life time is indispensable for cost reduction. In addition to the LED light itself, but also its switching power supply should has high efficiency and durable thus can ensure the same free maintenance period of use with LED street.
For this reason, resonance transverter is one of the most popular power supply topology. Contrast to former power supply topology, the capacity of resonance transverter can provide higher efficiency of power supply and reduce EMI. Soft switching is one of the most important capacities of resonance transverter. The body diode using in the resonance transverter sometimes may lead to system failure. The charge in the body diode must be completely eliminated to avoid the occurrence of large current and voltage surge. So the switching power supply of LED light need more perfect solution to provide more efficient lighting system and has no influence on the durability and cost effectiveness of transverter.
With the rapid development of national economy in each country, energy problem become more and more extrude. Energy saving is badly in need to be solved with. So the using of LED in street light has a significant sense for urban lighting.