A Generalized Carrier-Based PWM Technique for Multi-Level Back-to-Back Converters

Authors

Faculty of Electrical and Computer Engineering, Babol Noushirvany University of Technology, Babol, Iran

Abstract

This paper proposes a generalized carrier-based pulse width modulation (GCB-PWM) technique suitable for multi-level back to back (BTB) converters. The objective of GCB-PWM technique is to produce a pulse pattern in such a way that the first non-eliminated harmonic contentof the output voltage is eliminated or reduced below its permitted value without increasing the switching frequency. This is achieved by fixing the amplitude modulation index in some special values but changing the intermediate dc link voltages instead; leading to salient advantages such as the total harmonic distortion (THD) improvement and output filter size reduction. The proposed GCB-PWM technique has been applied on a seven-level BTB cascaded H-bridge (CHB) system. Simulation results show the superiority of this technique over the conventional CB-PWM from the THD and filter size points of view.

Keywords

References

[1] M. Miranbeigi, H. Iman-Eini and M. Asoodar, " A new switchingstrategy for transformer-less back-to-back cascaded H-bridge multilevel converter," IET Po wer Electronics, vol. 7, no. 7, pp. 1868–1877, 2014.
[2] Q. Lei and F. Zheng Peng, "Space Vector Pulsewidth Amplitude Modulation for a Buck–Boost Voltage/Current Source Inverter," IEEE Transactions on Power Electronics, vol. 29, no. 1, pp. 266-274, Jan 2014.
[3] Y. Lee, J. Yoo, H. Jung and S. Sul," Control strategy of single phase back-to-back converter for medium voltage drive under cell fault condition," Energy Conversion Conference and Exposition (ECCE), Sep. 2016.
[4] P. Khamphakdi, M. Nitta, M. Hagiwara and H. Akagi, " Zero-Voltage Ride-Through Capability of a Transformerless Back-To-Back System Using Modular Multilevel Cascade Converters for Power Distribution Systems," IEEE Transactions on Power Electronics, vol. 31, no. 4, pp. 2730-2741, June 2015.
[5] D. Andler, S. Kouro, M. Perez, J. Rodriguez and Bin Wu, “Switching loss analysis of modulation methods used in neutral point clamped converters,” Energy Conversion Congress and Exposition (ECCE), pp. 2565-2571, Sept. 2009.
[6] H. Ghoreishy, A. Yazdian Varjani, Sh. Farhangi, M. Mohamadian, “Hybrid cascaded H-bridge inverter with even power distribution and improved total harmonic distortion: analysis and experimental validation,” IET Power Electronics, vol. 5, no. 8, pp. 1245–1253, 2012.
[7] سعید سعیدآبادی، امین اشرف گندمی، سید حسین حسینی و مهران صباحی، "اینورتر جدید چند سطحی سه فاز هیبریدی بهبود یافته،" مجله مهندسی برق دانشگاه تبریز، وره 47، شماره 2، صفحه 562-551، تابستان 1396.
[8] A. H. Bhat and P. Agarwal, “An improved performance three-phase neutral-point clamped rectifier with simplified control scheme,” IEEE International Symposium on Industrial Electronics, pp. 1019-1024, 2006.
[9] N. Hatti, Y. Kondo and H. Akagi, “Five-Level Diode-Clamped PWM Converters Connected Back-to-Back for Motor Drives,” IEEE Transactions on Industry Applications, vol. 44, no. 4, pp. 1268-1276, July-Aug 2008.
[10] P. Chaturvedi, S. Jain and P. Agarwal, “A Simple Carrier-Based Neutral Point Potential Regulator for Three-Level Diode-Clamped Inverter,” International Journal of Power Electronics, vol. 3, no. 1, pp. 1-25, 2011.
[11] H. Natchpong, Y. Kondo and H. Akagi, “Back-to-Back Connected Five-Level Diode-Clamped PWM Converters for Motor Drives,” Power Conversion Conference, pp. 1456-1463, Nagoya, 2-5 April 2007.
[12] P. Zhiguo and F. Peng, “A Sinusoidal PWM Method With Voltage Balancing Capability for Diode-Clamped Five-Level Converters,” IEEE Transactions on Industry Applications, vol. 45, no. 3, pp. 1028-1034, May-June 2009.
[13] T. Ishida, K. Matsuse, K. Sugita, L. Huang and K. Sasagawa, “DC voltage control strategy for a five-level converter,” IEEE Transactions on Power Electronics, vol. 15, no. 3, pp. 508-515, May 2000.
[14] M. Saeedifard, R. Iravani and J. Pou, “A Space Vector Modulation Strategy for a Back-to-Back Five-Level HVDC Converter System,” IEEE Transactions on Industrial Electronics, vol. 56, no. 2, pp. 452-466, Feb. 2009.
[15] J.I. Leon, S. Vazquez, J.A. Sanchez, R. Portillo, L. G. Franquelo, J. M. Carrasco and E. Dominguez, “Conventional Space-Vector Modulation Techniques Versus the Single-Phase Modulator for Multilevel Converters,” IEEE Transactions on Industrial Electronics, vol. 57, no. 7, pp. 2473-2482, July 2010.
[16] S. R. Minshull, C.M. Bingham, D. A. Stone and M. P. Foster, “A new switching scheme for reduced switching frequency and balanced capacitor voltages for back-to-back connected, diode-clamped multilevel converters,” 4th IET Conference on Power Electronics, Machines and Drives (PEMD), pp. 636 – 639, 2-4 April 2008.
[17] سیما شاه محمدی، سید حسین حسینی، ابراهیم بابائی، مهران صباحی و جابر فلاح، "آنالیز تحلیلی هارمونیکهای خروجی اینورترهای چندسطحی در حالت کلیدزنی نامتقارن،" مجله مهندسی برق دانشگاه تبریز، دوره 46، شماره 1، صفحه 219-209، بهار 1395.
[18] J. Hamman and F. S. van der Merwe, “Voltage harmonics generated by voltage-fed inverters using PWM natural sampling,” IEEE Transactions on Power Electronics, vol. 3, no. 3, July. 1988.
[19] L. M. Tolbert, F. Z. Peng, and T. G. Habetler, “multilevel converters for large electric drives,” IEEE Trans on Ind. App., vol. 35, no. 1, pp. 36-44, Jan./Feb. 1999
[20] J. Napoles, J. I. Leon, R. Portillo, L. G. Franquelo and M. A. Aguirre, “Selective harmonic mitigation technique for high-power converters,” IEEE Transactions on  Industrial Electronics, vol. 57, no. 7, pp. 2315–2323, July 2010.
[21] R. Gupta, A. Ghosh and A. Joshi, “Generalized converter modulation and loss estimation for grid interface applications,” Power and Energy Society General Meeting- Conversion and Delivery of Electrical Energy in the 21st Century, IEEE 2008.

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