LED驱动电源的电磁兼容测试及整改.pdf

第39卷第6期 中国测试 Vol.39 No.6 2013年 11月 CHINA MEASUREMENT TEST November，2013 doi院10.11857/j.issn.1674-5124.2013.06.004 LED驱动电源的电磁兼容测试及整改 孔强强袁 宋庆军袁 张玉华 ， （济宁国家半导体及显示产品质量监督检验中心 山东 济宁 272000） 摘 要院LED照明产品在设计过程中引入的大量非线性电子元件，会产生一定的无线电骚扰和谐波，产品的电磁兼 容性能不易满足现行的国际与国家标准。该文以一照明LED灯为例，针对其较易不合格的EMC项目如电源骚扰电 压和辐射骚扰的测试，分析其不合格原因，给出LED驱动电源EMC的整改思路。对整改措施的有效性和可行性分 析，也可为其他电子设备的EMC整改提供参考。 ； ；整改措施 关键词院LED驱动电源 电磁兼容性；电源端子骚扰电压；辐射骚扰场强 + 中图分类号院TM923.34曰TM133曰TN972 .1曰TM937.1 文献标志码院A 文章编号院1674-5124渊2013冤06-0014-03 EMC test and rectification of LED drive power KONG Qiang-qiang，SONG Qing-jun，ZHANG Yu-hua （China National Semiconductor Display Products Quality Supervision and Inspection Center， Jining 272000，China） Abstract: A certain degree of radio disturbance and harmonic wave will occur since a large number of non-linear electronic components are used in LED production，and EMC test results of the products are not ideal according to current international and national standards. Based on test practice，the authors demonstrated some failure items in EMC test such as power failure disturbance voltage and radiation harassment，analyzed the failure causes and gave corrective ideas. It has certain reference value for the EMC design of other electronic equipments. Key words: LED drive power；EMC；mains terminal disturbance voltage；radiated disturbance field strength；rectificationmeasure 0 引 言 射骚扰场强的测试及整改过程。 ，