Simulation Research on Harmonic Emission Characteristics of LED Lamps

Compared with traditional lamps and other widely used energy-saving lamps, Light Emitting Diode (LED) lamps have energy-saving characteristics such as high efficiency and low power consumption. Therefore, whether it is research and development or promotion, it has received extensive attention and government support at home and abroad. However, after a large number of LED lamps are used, the harmonics brought into the lighting system cannot be ignored. Therefore, it is necessary to study the harmonic emission characteristics of this kind of lighting load with small capacity, wide distribution and large quantity. Based on the extensive understanding and research of the related research results of LED lamps, this paper gives a detailed introduction and analysis of the common main drive circuit topology of LED lamps, and focuses on the most common and effective typical circuits from the aspects of circuit structure and working principle. Based on its basic working principle, the harmonic emission characteristics of the simulation experiment are studied, which has guiding significance for the harmonic evaluation, harmonic superposition, harmonic control and drive circuit structure improvement of LED lamps.