Stability Analysis of a Power-switching Converter with an EMI Filter for PV Systems
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Abstract
This paper presents the stability analysis of a power-switching converter with an EMI filter for PV systems. Impedance comparison technique, typically used by EMI filter designers, is investigated. The accuracy of this technique is compared to other techniques i.e. Bode plot, Nyquist plot, Pole-Zero plot, and closed-loop poles. From the simulated results, it can be concluded that the impedance comparison technique is valid, and the overall system is stable if the input impedance of a power-switching converter is at least 10 dB higher than the output impedance of an EMI filter only at some certain frequency.
Article Details
How to Cite
[1]
บุญเรือง ส. and ธาราธีรเศรษฐ์ ว., “Stability Analysis of a Power-switching Converter with an EMI Filter for PV Systems”, sej, vol. 13, no. 2, pp. 12–22, Aug. 2018.
Section
Research Articles
Copyright belongs to Srinakharinwirot University Engineering Journal
References
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[2] A. Reznik, M. G. Simões, A. Al-Durra and .S. M. Muyeen, “LCL Filter Design and Perfor-mance Analysis for Grid-Interconnected Systems,” IEEE Trans. Ind. Appl., vol. 50, pp.1225-1232, Mar. 2014.
[3] J. Zhang, W. Chen, B. Zhang, X. Song and H. Huang, “Optimal design of EMI filters for PV system based on parasitic parameter and stability analysis,” in 2015 9th Interna-tional Conference on Power Electronics and ECCE Asia., Seoul., 2015, pp. 2744-2751.
[4] R. A. Shaheen, “Stability analysis of a cur-rent sourced converter when an EMI filter is added at the input for PV applications,” M.S. thesis, Dept. Radio Frequency Elec-tronics., Tampere Univ. of Tech., Tampere, Finland, 2011.
[5] T. Suntio, Dynamic Profile of Switched-Mode Converter, Wein-heim: WILEY-VCH, 2009.
[6] W. E. Robert, M. Dragan, Fundamentals of Power Electronics, United States of Ameri-ca: Kluwer, 2011.
[7] M. J. Nave, Power Line Filter Design for Switched Mode Power Supplies, Gainesville: Mark Nave Consultants, 2010.
[8] K. Ogata, Modern Control Engineering, New Jersey: Tom Robbins, 1997.