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由于工频交流电(简称:交流电)是通用照明最常用的电源,具有使用上的广泛性、便利性和廉价性,加之白光LED技术的迅猛发展,其在通用照明领域的应用也更加广泛,因此LED通用照明需要采用交流电来驱动。基于LED的固有特性,目前占主导地位的LED驱动电源主要是各种类型的高频开关恒流电源。伴随高压AC LED的发展,采用交流电驱动技术虽然还存在许多问题,但已经是异军突起,成为新的LED照明技术发展和研究方向。文章主要是从交流电的特性出发,研究采用交流电驱动白光LED的技术方案以及存在的问题,并给出了结论。
As the frequency AC power (referred to as: AC) is the most commonly used general lighting power supply, with the use of the extensive, convenient and cheap, coupled with the rapid development of white LED technology, its application in the field of general lighting is also more extensive, therefore LED general lighting needs to be driven by AC. LED-based inherent characteristics, the current dominant LED driver power supply is mainly various types of high-frequency switching constant current power supply. Accompanied by the development of high-voltage AC LED, the use of AC drive technology, although there are still many problems, but it has been a sudden emergence, a new LED lighting technology development and research direction. The article is mainly from the characteristics of the AC starting to study the use of AC-driven white LED technology solutions and existing problems, and gives the conclusion.