基于插入损耗的噪声源阻抗修正计算方法

Abstract
Figure/Table
References
Related Citation (14)

Download: PDF (516 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Usually, to achieve effective insertion loss of EMI filter, the characteristic of noise source impedance in frequency domain should be considered. As known, voltage insertion loss method is the simplest way to test noise source impedance. In this paper, the assumptions used in the conventional voltage insertion loss method were analyzed at first. Then it was found that some of the assumptions did not so strictly hold mathematically that the approximate calculation might lead to some significant errors, and that some calculated results were even contradictory to the assumptions, which made the results invalid. Thereafter, still following the conventional test plan, some correction on the calculation method of the noise source impedance was made, the accurate analytical expression of source impedance was derived and the maximum and minimum values of the amplitude of the source impedance were worked out. Moreover, the deduced results were verified mathematically. Finally, a test on DC/DC converter used on electric vehicles was carried out, in which measurement and calculation was made and the validity and applicability of the proposed method was verified. By the analysis of the test and design case, it is shown that noise source impedance can be calculated more accurately using the improved voltage insertion loss method, which avoided EMI filter overdesign, facilitated filter design and device choice, and aided optimization of filter volume and weight.

Key words： Noise source impedance voltage insertion loss EMI filter impedance mismatch

Received: 12 July 2013 Published: 13 April 2015

PACS:

TN713

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Zhang Jiajia
	Zhang Yicheng
	Wei Li
	Ye Shangbin
	Yao Yongtao

Cite this article:

Zhang Jiajia,Zhang Yicheng,Wei Li等. A Revised Calculation Method for Noise Source Impedance Based on Insertion Loss[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 80-87.

URL:

http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I4/80

[1] 石磊磊, 王世山, 徐晨琛. 二端口网络散射参数理论及其在平面EMI滤波器测试中的应用[J]. 电工技术学报, 2013, 28(2): 78-85. Shi Leilei, Wang Shishan, Xu Chenchen. Theory of scatter parameters of two port network and its applica- tion in the test of planar EMI filter[J]. Transactions of China Electrotechnical Society, 2013, 28(2): 78-85.
[2] Vuttipon Tarateeraseth. EMI filter design Part III: selection of filter topology for optimal performance[J]. IEEE Electromagnetic Compatibility Magazine, 2012, 1(2): 60-73.
[3] Sheng Y, Eberle W, Liu Y. A novel EMI filter design method for switching power supply[J]. IEEE Transac- tions on Power Electronics, 2004, 19(6): 1668-1678.
[4] 王世山, 朱叶, 石磊磊. 基于环形感容集成结构单元的平面EMI滤波器设计理论及实施[J]. 电工技术学报, 2013, 28(1): 126-135. Wang Shishan, Zhu Ye, Shi Leilei. Design theory and implementation of planar EMI filter based on annular integrated inductor-capacitor unit[J]. Transactions of China Electrotechnical Society, 2013, 28(1): 126-135.
[5] 温志伟, 伍晓峰, 徐德鸿, 等. 集成EMI滤波器原理与设计[J]. 电工技术学报, 2011, 26(9): 160-166. Wen Zhiwei, Wu Xiaofeng, Xu Dehong, et al. Principles and design on Integrated EMI filter[J]. Transactions of China Electrotechnical Society, 2011, 26(9): 160- 166.
[6] International Special Committee on Radio Inter- ference. CISPR 16-1-2: 2006 Specification for radio disturbance and immunity measuring apparatus and methods-Part1-2: Radio disturbance and immunity measuring apparatus Ancillary equipment- Conducted disturbances[S]. 2006.
[7] Liu Q, Wang S, Wang F, et al. EMI suppression in voltage source converters by utilizing DC-link decoup- ling capacitors[J]. IEEE Transactions on Power Electro- nics, 2007, 22(4): 1417-1428.
[8] Zhang D, Chen D Y, Nave M J, et al. Measurement of noise source impedance of off-line converters[J]. IEEE Transactions on Power Electronics, 2000, 15(5): 820- 825.
[9] Meng J, Ma W, Pan Q, et al. Identification of essential coupling path models for conducted EMI prediction in switching power converters[J]. IEEE Transactions on Power Electronic, 2006, 21(6): 1795- 1803.
[10] Hu B, See K Y, Richard W C. Evaluation of ferrite core EMI suppression under realistic working conditions [C]. The 19th International Symposium on EMC, Zurich, Switzerland, 2008: 774-777.
[11] Qiu X, Zhao Y, See K Y, et al. An efficient noise source impedance estimation approach applied in electromagnetic compatibility[J]. Chinese Journal of Electronics, 2009, 18(4): 744-748.
[12] Zhao Yang, Lu Xiaoquan, Dong Yinghua, et al. Study on impedance extraction methods applied in conductive EMI source modeling[C]. Asia Pacific International Symposium on Electromagnetic Compatibitity, Beijing, China, 2010: 998-1001.
[13] Vuttipon Tarateeraseth. EMI filter design Part II: measurement of noise source impedances[J]. IEEE Electromagnetic Compatibility Magzine, 2012, 1(1): 42-49.
[14] See K Y, Deng J. Measurement of noise source impedance of SMPS using a two probes approach[J]. IEEE Transactions on Power Electronics, 2004, 19(3): 862-868.
[15] Zhao B, Zhao M, Feng Z, et al. Standard resistor calibration method in measurement of noise source impedance using dual-probe approach[C]. CEEM, Xi’an, China, 2009: 408-411.
[16] CISPR 25-2002: Radio disturbance characteristics for the protection of receivers used on board vehicles boats and on devices-limits and methods of measure- ments[S]. 2002.