Electromagnetic Compatibility Design and Optimization of Building Lighting Device under Lightning Protection Safety Guidance
ZHANG Xiuwen
Abstract：With the deep integration of intelligent lighting and Internet of Things technology in buildings,the lighting system has evolved from a single functional unit to a complex electronic information system,which is more sensitive to electromagnetic interference(EMI)such as lightning electromagnetic pulse(LEMP)and switching overvoltage.In this paper,the electromagnetic compatibility(EMC)of lighting device is taken as the core,and its design and optimization method under the framework of lightning protection safety is studied.The main interference sources and coupling paths are analyzed,and the mechanism of lightning induced overvoltage and grid conduction interference is discussed.A systematic EMC design strategy is proposed from the aspects of circuit design,filtering,shielding,grounding and software anti-interference.Combined with the case of an international airport terminal,the overall solution from driver selection,protection circuit design,cable laying to system grounding is introduced in detail.The measured results show that the surge immunity of the optimized system is increased from±1 kV to±4 kV,and the EMI related failure rate is reduced by 92%.
Keywords：architectural lightingelectromagnetic compatibilitylightning protection safetyLED driversurge protectionoptimization design
Publication Date：2026-01-25
Online Publishing Date：2026-03-05(First online date of this platform, not the publication date of the document)
Pages：5( 58-61,68 )