| 基于改进双电流探头法的EMI噪声源内阻抗测量 |
| |
| 引用本文： | 赵波,封志明,赵敏,水利民,姚敏. 基于改进双电流探头法的EMI噪声源内阻抗测量[J]. 东南大学学报(自然科学版), 2009, 0(Z2) |
| |
| 作者姓名： | 赵波 封志明 赵敏 水利民 姚敏 |
| |
| 作者单位： | 南京航空航天大学自动化学院;江苏省计量科学研究院; |
| |
| 基金项目： | 国家质检总局科技计划资助项目(2008QK104) |
| |
| 摘 要： | 提出了一种应用于EMI噪声源内阻抗测量的改进双电流探头法.首先,分别利用2个标准电阻代替被测噪声源内阻抗接入测试回路,或将被测噪声源内阻抗短路,依次测量上述3种测试回路中注入探头输入电压和检测探头输出电压,得到3个测试回路方程,并由此得到测试回路阻抗的幅值与相位.然后,将EMI噪声源接入测试回路,重复上述测试步骤,通过计算即可确定被测EM I噪声源内阻抗的幅值与相位,测试结果接近矢量网络分析仪标准测试结果.对AC-DC开关电源噪声源内阻抗的分析结果表明,随着频率的上升,其共模噪声源内阻抗和差模噪声源内阻抗分别呈减小和增大的趋势.
|
| 关 键 词： | 电磁兼容 电磁干扰 噪声源内阻抗 双电流探头法 |
EMI noise source impedance measurement based on modified dual-current-probe approach |
| |
| Zhao Bo, Feng Zhiming Zhao Min Shui Limin Yao Min. EMI noise source impedance measurement based on modified dual-current-probe approach[J]. Journal of Southeast University(Natural Science Edition), 2009, 0(Z2) |
| |
| Authors: | Zhao Bo Feng Zhiming Zhao Min Shui Limin Yao Min |
| |
| Affiliation: | Zhao Bo1,2 Feng Zhiming2 Zhao Min1 Shui Limin2 Yao Min1 (1 College of Automation Engineering,Nanjing University of Aeronautics , Astronautics,Nanjing 200016,China) (2 Jiangsu Institute of Metrology,Nanjing 210007,China) |
| |
| Abstract: | A modified dual-current-probe approach applied to the electromagnetic interference(EMI) noise source impedance measurement is proposed.First,the EMI source impedance under test is replaced by two standard resistances or short-circuited.The input voltages of the injection probe and the output voltages of the test probe in the three circuits are measured,and three circuit equations are obtained.The amplitudes and phases of the equivalent impedances can be calculated by solving the three equations.Then,the EMI... |
| |
| Keywords: | electromagnetic compatibility electromagnetic interference noise source impedance dual-current-probe approach |
| 本文献已被 CNKI 等数据库收录！ |
|
