LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Vodden, John Alan (2012)
Languages: English
Types: Unknown
Subjects:
This thesis investigates space-vector modulation and one-dimensional modulation applied to the cascaded H-bridge multi-level converter as a model for one port of the UNIFLEX-PM power converter system. The UNIFLEX-PM converter is a modular system including galvanic isolation at medium frequency intended to replace transformers in future distribution and transmission systems. Power converters in this application must produce good quality voltage waveforms with low power loss. In this work, modulation methods are developed using theoretical analyses and simulation studies, before being verified experimentally using a low voltage, laboratory-based power converter operating at the low switching frequencies applicable to high-power applications. Using space-vector modulation, the relationship between the phase of the sampling process and the distortion of the line voltages is used to reduce the harmonic distortion of the output voltages. Different loads are attached to the cells of the cascaded H-bridge converter and limits are derived determining the range of loads for which it is possible to equalize the capacitor voltages. An algorithm which uses redundant states to balance the capacitor voltages without increasing the switching frequency is applied to space-vector modulation and one-dimensional modulation and its performance is compared to the derived limits. The geometrical effect of capacitor voltage ripple on the space-vector diagram is used to derive the influence on the spectrum of the line-voltages. It is identified that second and fourth harmonics of the capacitor voltages contribute to fifth and seventh harmonics of the line voltages. A feed-forward scheme to compensate for the ripple of the capacitor voltage is derived and is shown to reduce the magnitude of un-wanted harmonics. All the methods developed in this thesis can be applied to converters with any number of cells.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] "A european strategy for sustainable, competitive and secure energy," Commission of the European Communities, Mar. 2006, COM(2006) 105. [Online]. Available: http://ec.europa.eu/energy/strategies/2006/ 2006_03_green_papeLenergy_en.htm
    • [2] "UK electricity networks," Parliamentary Office of Science and Technology, Oct. 2001, postnote 163. [Online]. Available: www. parliament.uk/documents/post/pn163.pdf
    • [3] "Long term development statement network summary," UK Power Networks, 2010. [Online]. Available: http://www.ukpowernetworks.co.uk/products-services/networks/ knowledge-centre/long-term-development-statement.shtml
    • [4] V. Hamidi, K. S. Smith, and R. C. Wilson, "Smart grid technology review within the transmission and distribution sector," in IEEE PES Innovative Smart Grid Technologies Conference Europe, Oct. 2010, pp. 1-8.
    • [5] R. Strzelecki and G. Benysek, Eds., Power Electronics in Smart Electrical Energy Networks. London: Springer, 2008.
    • [6] M. Elbuluk and N. R. N. Idris, "The role power electronics in future energy systems and green industrialization," in IEEE Second International Power and Energy Conference. PECon, Dec. 2008, pp. 1-6.
    • [7] L. M. Tolbert and F. Z. Peng, "Multilevel converters as a utility interface for renewable energy systems," in IEEE Power Engineering Society Summer Meeting, vol. 2, 2000, pp. 1271-1274.
    • [8] "New ERA for electricity in Europe. distributed generation: Key issues, challenges and proposed solutions," European Commission, 2006, eUR 20901. [Online]. Available: www.smartgrids.eu/documents/ New-ERA-for-Electricity-in-Europe.pdf
    • [9] F. Iov, F. Blaabjerg, J. Clare, P. Wheeler, A. Rufer, and A. Hyde, "UNIFLEX-PM - a key-enabling technology for future european electricy networks," European Power Electronics and Drives Journal, vol. 19, no. 4, pp. 6-16, Oct. 2009.
    • [10] J. Rodriguez, J.-S. Lai, and F. Z. Peng, "Multilevel inverters: A survey of topologies, controls, and applications," IEEE Transactions on Industrial Electronics, vol. 49, no. 4, pp. 724-738, Aug. 2002.
    • [11] D. Soto and T. C. Green, "A comparison of high-power converter topologies for the implementation of FACTS controllers," IEEE Transactions on Industrial Electronics, vol. 49, no. 5, pp. 1072 - 1080, Oct. 2002.
    • [12] J. Rodriguez, L. G. Franquelo, S. Kouro, J. 1. Leon, R. C. Portillo, M. A. M. Prats, and M. A. Perez, "Multilevel converters: An enabling technology for high-power applications," Proc. IEEE, vol. 97, no. 11, pp. 1786 -1817, Nov. 2009.
    • [13] B. P. McGrath and D. G. Holmes, "Multicarrier PWM strategies for multilevel inverters," IEEE Transactions on Industrial Electronics, vol. 49, no. 4, pp. 858-867, Aug. 2002.
    • [14] A. Nabae, I. Takahashi, and H. Akagi, "A new Neutral-Point-Clamped PWM inverter," IEEE Transactions on Industry Applications, vol. IA17, no. 5, pp. 518-523, 1981.
    • [15] J. Rodriguez, S. Bernet, P. K. Steimer, and I. E. Lizama, "A survey on neutral-point-clamped inverters," IEEE Transactions on Industrial Electronics, vol. 57, no. 7, pp. 2219-2230, Jul. 2010.
    • [16] T. Larsson, R. Grunbaum, and B. Ratering-Schnitzler, "Svc light: a utility's aid to restructuring its grid," in IEEE Power Engineering Society Winter Meeting, vol. 4, 2000, pp. 2577-2581.
    • [17] N. Celanovic and D. Boroyevich, "A comprehensive study of neutralpoint voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters," IEEE Transactions on Power Electronics, vol. 15, no. 2, pp. 242-249, Mar. 2000.
    • [18] M. Marchesoni and P. Tenca, "Diode-clamped multilevel converters: a practicable way to balance DC-link voltages," IEEE Transactions on Industrial Electronics, vol. 49, no. 4, pp. 752-765, Aug. 2002.
    • [19] P. Tekwani, R. Kanchan, and K. Gopakumar, "A dual five-level inverterfed induction motor drive with common-mode voltage elimination and dc-link capacitor voltage balancing using only the switching-state redundancy - part I," IEEE Transactions on Industrial Electronics, vol. 54, no. 5, pp. 2600-2608, Oct. 2007.
    • [20] - - , "A dual five-level inverter-fed induction motor drive with commonmode voltage elimination and dc-link capacitor voltage balancing using only the switching-state redundancy - part II," IEEE Transactions on Industrial Electronics, vol. 54, no. 5, pp. 2609-2617, Oct. 2007.
    • [21] J. Pou, J. Zaragoza, P. Rodriguez, S. Ceballos, V. M. Sala, R. P. Burgos, and D. Boroyevich, "Fast-processing modulation strategy for the neutral-point-clamped converter with total elimination of low-frequency voltage oscillations in the neutral point," IEEE Transactions on Industrial Electronics, vol. 54, no. 4, pp. 2288 -2294, Aug. 2007.
    • [22] Z. Pan, F. Z. Peng, K. Corzine, V. Stefanovic, J. Leuthen, and S. Gataric, "Voltage balancing control of diode-clamped multilevel rectifier/inverter systems," IEEE Transactions on Industry Applications, vol. 41, no. 6, pp. 1698-1706, Nov. 2005.
    • [23] R. Vargas, P. Cortes, U. Ammann, J. Rodriguez, and J. Pontt, "Predictive control of a Three-Phase Neutral-Point-Clamped inverter," IEEE Transactions on Industrial Electronics, vol. 54, no. 5, pp. 2697-2705, Oct. 2007.
    • [24] T. Bruckner, S. Bernet, and H. Guldner, "The active NPC converter and its loss-balancing control," IEEE Transactions on Industrial Electronics, vol. 52, no. 3, pp. 855-868, 2005.
    • [25] T. Meynard, H. Foch, P. Thomas, J. Courault, R. Jakob, and M. Nahrstaedt, "Multicell converters: basic concepts and industry applications," IEEE Transactions on Industrial Electronics, vol. 49, no. 5, pp. 955-964, Oct. 2002.
    • [26] B. P. McGrath, T. Meynard, G. Gateau, and D. Holmes, "Optimal modulation of flying capacitor and stacked multicell converters using a state machine decoder," IEEE Transactions on Power Electronics, vol. 22, no. 2, pp. 508-516, Mar. 2007.
    • [27] R. Wilkinson, T. Meynard, and H. du Toit Mouton, "Natural balance of multicell converters: The general case," IEEE Transactions on Power Electronics, vol. 21, no. 6, pp. 1658-1666, 2006.
    • [29] T. Meynard, M. Fadel, and N. Aouda, "Modeling of multilevel converters," IEEE Transactions on Industrial Electronics, vol. 44, no. 3, pp. 356-364, Jun. 1997.
    • [30] J. Wen and K. Smedley, "Synthesis of multilevel converters based on single- and/or three-phase converter building blocks," IEEE Transactions on Power Electronics, vol. 23, no. 3, pp. 1247-1256, 2008.
    • [31] P. Lezana and G. Ortiz, "Extended operation of cascade multicell converters under fault condition," IEEE Transactions on Industrial Electronics, vol. 56, no. 7, pp. 2697-2703, 2009.
    • [32] P. Hammond, "A new approach to enhance power quality for medium voltage AC drives," IEEE Transactions on Industry Applications, vol. 33, no. 1,pp. 202-208, Jan. 1997.
    • [33] F. Z. Peng, J.-S. Lai, J. McKeever, and J. VanCoevering, "A multilevel voltage-source inverter with separate DC sources for static var generation," IEEE Transactions on Industry Applications, vol. 32, pp. 1130- 1138, 1996.
    • [34] F. Z. Peng, W. Qian, and D. Cao, "Recent advances in multilevel converter/inverter topologies and applications," in Int. Power Electron. ConI, Jun. 2010, pp. 492-501.
    • [35] P. Flores, J. Dixon, M. Ortuzar, R. Carmi, P. Barriuso, and L. Moran, "Static var compensator and active power filter with power injection capability, using 27-level inverters and photovoltaic cells," IEEE Transactions on Industrial Electronics, vol. 56, no. 1, pp. 130-138, Jan. 2009.
    • [36] Y. Cheng, C. Qian, M. L. Crow, S. Pekarek, and S. Atcitty, "A comparison of Diode-Clamped and cascaded multilevel converters for a STATCOM with energy storage," IEEE Transactions on Industrial Electronics, vol. 53, no. 5, pp. 1512-1521, Oct. 2006.
    • [37] J. Rodriguez, J. Pontt, E. Silva, J. Espinoza, and M. Perez, "Topologies for regenerative cascaded multilevel inverters," in IEEE 94th Annual Power Electron. Specialist Con/. PESC 09, vol. 2, Jun. 2003, pp. 519 - 524.
    • [38] P. Lezana, J. Rodriguez, and D. A. Oyarzun, "Cascaded multilevel inverter with regeneration capability and reduced number of switches," IEEE Transactions on Industrial Electronics, vol. 55, no. 3, pp. 1059 -1066, Mar. 2008.
    • [39] D. Siemaszko, F. Zurkinden, L. Fleischli, I. Villar, Y. R. de Novaes, and A. Rufer, "Description and efficiency comparisons of two 25kVA dc/ac isolation modules," European Power Electronics and Drives Journal, vol. 19, no. 4, pp. 17-24, Oct. 2009.
    • [40] A. J. Watson, H. Q. S. Dang, P. W. Wheeler, J. C. Clare, G. Mondal, S. Kenzelmann, A. R. Rufer, and Y. R. de Novaes, "Control challenges and solutions for a multi-cellular converter for use in electricity networks," European Power Electronics and Drives Journal, vol. 19, no. 4, pp. 25-31, Oct. 2009.
    • [41] R. Marquardt and A. Lesnicar, "A new modular voltage source inverter," in Proceedings of the European Conference on Power Electronics and Drives, EPE, 2003.
    • [42] M. Davies, M. Dommaschk, J. Dorn, J. Lang, D. Retzmann, and D. Soerangr, "HVDC plus basics and principle of operation," Seimens AG, 2009. [Online]. Available: http://www.energy.siemens.com/mx/pool/ hq/power-transmission/HVDC/HVDC..Plus-1)asics_and_Principle.pdf
    • [43] G. P. Adam, O. Anaya-Lara, G. M. Burt, D. Telford, B. W. Williams, and J. R. McDonald, "Modular multilevel inverter: Pulse width modulation and capacitor balancing technique," lET Power Electronics, vol. 3, no. 5, pp. 702 -715, september 2010.
    • [44] M. A. Perez and J. Rodriguez, "Generalized modeling and simulation of a modular multilevel converter," in IEEE International Symposium on Industrial Electronics (ISlE), on, Jun. 2011, pp. 1863 -1868.
    • [45] M. Hagiwara and H. Akagi, "Control and experiment of pulsewidthmodulated modular multilevel converters," IEEE Transactions on Power Electronics, vol. 24, no. 7, pp. 1737 -1746, Jul. 2009.
    • [46] M. Glinka and R. Marquardt, "A new AC/AC multilevel converter family," IEEE Transactions on Industrial Electronics, vol. 52, no. 3, pp. 662 - 669, Jun. 2005.
    • [47] S. Kouro, M. Malinowski, K. Gopakumar, J. Pou, L. G. Franquelo, B. Wu, J. Rodriguez, M. A. Perez, and J. I. Leon, "Recent advances and industrial applications of multilevel converters," IEEE Transactions on Industrial Electronics, vol. 57, no. 8, pp. 2553-2580, 2010.
    • [48] M. Malinowski, K. Gopakumar, J. Rodriguez, and M. A. Perez, "A survey on cascaded multilevel inverters," IEEE Transactions on Industrial Electronics, vol. 57, no. 7, pp. 2197-2206, Jul. 2010.
    • [49] C. Rech and J. Pinheiro, "Hybrid multilevel converters: Unified analysis and design considerations," IEEE Transactions on Industrial Electronics, vol. 54, no. 2, pp. 1092-1104, Apr. 2007.
    • [50] M. Veenstra and A. Rufer, "Control of a hybrid asymmetric multilevel inverter for competitive medium-voltage industrial drives," IEEE Transactions on Industry Applications, vol. 41, no. 2, pp. 655-664, Mar. 2005.
    • [51] C. Silva, N. Espinoza, and P. Lezana, "A novel modulation technique for a multilevel hybrid converter with floating capacitors," in 36th Annual Conference of the IEEE Industrial Electronics Society IECON 2010, 2010, pp. 296-302.
    • [52] G. Carrara, S. Gardella, M. Marchesoni, R. Salutari, and G. Sciutto, "A new multilevel pwm method: a theoretical analysis," IEEE Transactions on Power Electronics, vol. 7, pp. 497-505, 1992.
    • [53] B. Wu, High Power Converters and ac Drives. Interscience, 2006.
    • [55] D. G. Holmes, "The significance of zero space vector placement for carrier-based pwm schemes," IEEE Transactions on Industry Applications, vol. 32, no. 5, pp. 1122-1129, Sep. 1996.
    • [56] B. P. McGrath, D. G. Holmes, and T. Lipo, "Optimized space vector switching sequences for multilevel inverters," IEEE Transactions on Power Electronics, vol. 18, no. 6, pp. 1293-1301, Nov. 2003.
    • [57] J. Rodriguez, S. Bernet, B. Wu, J. O. Pontt, and S. Kouro, "Multilevel voltage-source-converter topologies for industrial medium-voltage drives," IEEE Transactions on Industrial Electronics, vol. 54, no. 6, pp. 2930--2945, Dec. 2007.
    • [58] B. P. McGrath, "Topologically independent modulation of multilevel inverters," Ph.D. dissertation, Monash University Australia, 2002.
    • [59] D.-W. Kang, B.-K. Lee; J.-H. Jeon, T.-J. Kim, and D.-S. Hyun, "A symmetric carrier technique of CRPWM for voltage balance method of fiying-capacitor multilevel inverter," IEEE Transactions on Industrial Electronics, vol. 52, no. 3, pp. 879-888, 2005.
    • [60] D. G. Holmes and B. P. McGrath, "Opportunities for harmonic cancellation with carrier-based pwm for a two-level and multilevel cascaded inverters," IEEE Transactions on Industrial Electronics, vol. 37, no. 2, pp. 574 -582, Mar. 2001.
    • [61] H. W. van der Broeck, H.-C. Skudelny, and G. V. Stanke, "Analysis and realization of a pulsewidth modulator based on voltage space vectors," IEEE Transactions on Industry Applications, vol. 24, no. 1, pp. 142-150, Jan. 1988.
    • [62] J. H. Seo, J. H. Seo, C. H. Choi, C. H. Choi, and D. S. Hyun, "A new simplified space-vector PWM method for three-level inverters," IEEE Transactions on Power Electronics, vol. 16, no. 4, pp. 545-550, Jul. 2001.
    • [63] N. Celanovic and D. Boroyevich, "A fast space-vector modulation algorithm for multilevel three-phase converters," IEEE Transactions on Industry Applications, vol. 37, pp. 637-641, Apr. 2001.
    • [64] S. Wei, B. Wu, and Q. Wang, "An improved space vector P\VM control algorithm for multilevel inverters," in The 4th International Power Electronics and Motion Control Conference. IPEMC, vol. 3, 2004, pp. 1124-1129.
    • [65] S. Tuncer and Y. Tatar, "A new approach for selecting the switching states of SVPWM algorithm in multilevel inverter," European Transactions on Electrical Power, vol. 17, no. 1, pp. 81-95, 2007.
    • [66] S. Bowes and L. Yen-Shin, "The relationship between space-vector modulation and regular-sampled PWM," IEEE Transactions on Industrial Electronics, vol. 44, no. 5, pp. 670-679, 1997.
    • [67] A. Gupta and A. Khambadkone, "A space vector modulation scheme to reduce common mode voltage for cascaded multilevel inverters," IEEE Transactions on Power Electronics, vol. 22, no. 5, pp. 1672-1681, 2007.
    • [68] J. I. Leon, R. Portillo, L. G. Franquelo, S. Vazquez, J. M. Carrasco, and E. Dominguez, "New space vector modulation technique for single-phase multilevel converters," in IEEE Int. Symp. on Ind. Electron. ISlE, Jun. 2007, pp. 617 -622.
    • [69] J. I. Leon, S. Vazquez, A. J. Watson, L. G. Franquelo, P. \V. \Vheeler, and J. M. Carrasco, "Feed-forward space vector modulation for singlephase multilevel cascaded converters with any DC voltage ratio," IEEE Transactions on Industrial Electronics, vol. 56, no. 2, pp. 315-325, Feb. 2009.
    • [70] 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, Jul. 2010.
    • [72] J. R. Wells, B. M. Nee, P. L. Chapman, and P. T. Krein, "Selective harmonic control: a general problem formulation and selected solutions," IEEE Transactions on Power Electronics, vol. 20, no. 6, pp. 1337 - 1345, Nov. 2005.
    • [73] L. Li, D. Czarkowski, Y. G. Liu, and P. Pillay, "Multilevel selective harmonic elimination PWM technique in series-connected voltage inverters," IEEE Transactions on Industry Applications, vol. 36, no. 1, pp. 160-170, Jan. 2000.
    • [74] K. Sundareswaran, K. Jayant, and T. N. Shanavas, "Inverter harmonic elimination through a colony of continuously exploring ants," IEEE Transactions on Industrial Electronics, vol. 54, no. 5, pp. 2558 -2565, Oct. 2007.
    • [75] J. Vassallo, P. W. Wheeler, and C. J. C., "Optimal waveform generation for utility-connected multilevel converters," in Proceedings of the European Conference on Power Electronics and Drives, EPE, 2003.
    • [76] L. A. Tolbert, F. Z. Peng, T. Cunnyngham, and J. N. Chiasson, "Charge balance control schemes for cascade multilevel converter in hybrid electric vehicles," IEEE Transactions on Industrial Electronics, vol. 49, no. 5, pp. 1058-1064, Oct. 2002.
    • [77] J. Vassallo, "Multilevel converters for regenerative Fuel-Cells," Ph.D. dissertation, University of Nottingham, 2005.
    • [78] A. Watson, "Selective harmonic elimination methods for a cascaded hbridge converter," Ph.D. dissertation, University of Nottingham, 2008.
    • [79] L. Franquelo, J. Napoles, R. Guisado, J. Leon, and M. Aguirre, "A flexible selective harmonic mitigation technique to meet grid codes in Three-
    • [80] J. Napoles, J. Leon, R. Portillo, L. Franquelo, and M. Aguirre, "Selective harmonic mitigation technique for high-power converters," IEEE Transactions on Industrial Electronics, vol. 57, no. 7, pp. 2315-2323, Jul. 2010.
    • [81] S. Sirisukprasert, "Modeling and control of a cascaded-multilevel converter-based STATCOM," Ph.D. dissertation, Virginia Polytechnic Institute and State University, 2004.
    • [82] A. Yazdani and R. Iravani, Voltage-sourced Converters in Power Systems. Wiley, 2010.
    • [83] M. P. Kazmierkowski, R. Krishnan, and F. Blaabjerg, Eds., Control in power electronics: selected problems. Academic Press, 2002.
    • [84] G. C. Goodwin, S. F. Graebe, and M. E. Salgado, Control System Design. Upper Saddle River, N.J: Prentice Hall, 2001.
    • [85] F. Blaabjerg, R. Teodorescu, M. Liserre, and A. Timbus, "Overview of control and grid synchronization for distributed power generation systems," IEEE Transactions on Industrial Electronics, vol. 53, no. 5, pp. 1398-1409, Oct. 2006.
    • [86] S. Chung, "A phase tracking system for three phase utility interface inverters," IEEE Transactions on Power Electronics, vol. 15, no. 3, pp. 431-438, May 2000.
    • [87] M. S. Fadali and A. Visioli, Digital Control Engineering Analysis and Design. Amsterdam: Elsevier/Academic Press, 2009.
    • [88] A. Leedy and R. Nelms, "Harmonic analysis of a space vector PWM inverter using the method of mUltiple pulses," in IEEE International Symposium on Industrial Electronics, vol. 2, 2006, pp. 1182-1187.
    • [90] L. G. Franquelo, J. Rodriguez, J. 1. Leon, S. Kouro, R. Portillo, and M. A. M. Prats, "The age of multilevel converters arrives," IEEE Industrial Electronics Magazine, vol. 2, no. 2, pp. 28-39, 2008.
  • No related research data.
  • Discovered through pilot similarity algorithms. Send us your feedback.

Share - Bookmark

Cite this article