Two Digital-scalar PWM Schemes for Generating  ree-phase Unbalanced Voltages

Authors

  • Darlan A. Fernandes § Universidade Federal da Para´ıba, CEP:58051-900, Joao Pessoa - PB, Brasil
  • Euzeli C. Santos Jr Universidade Federal de Campina Grande, CEP:58109-090, Campina Grande - PB, Brasil
  • Fabiano F. Costa Universidade Federal do ABC, CEP:09210-170, Santo Andre - SP, Brasil
  • Alexandre C. Castro Universidade Federal da Para´ıba, CEP:58051-900, Joao Pessoa - PB, Brasil

DOI:

https://doi.org/10.18618/REP.2012.1.439446

Keywords:

four-leg converter, Power quality, Scalar PWM, Sequence Components, space vector PWM, Unbalanced Voltages

Abstract

This paper presents two modulation approaches for generating unbalanced voltages by means of four-leg voltage source inverters (VSI). The first modulation is an extended scheme of a digital scalar pulse width modulation previously proposed for controlling three-leg inverters. The second one is based on the decomposition of the voltage reference signals into their symmetrical components. The schemes are compared theoretically, by simulations and by experimental results. As consequence, it is found out a total equivalence between the two modulations despite their different inspirations. The fundamentals of both techniques and a mathematical proof of their equality are unfolded. Also, the performance of the techniques with respect to the harmonic distortion and power switching loss are discussed. The results show that the techniques are effective.

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Author Biographies

Darlan A. Fernandes, § Universidade Federal da Para´ıba, CEP:58051-900, Joao Pessoa - PB, Brasil

received the B.S. degree in electrical engineering from the Universidade Federal da Para´ıba in 2002, and M.S. and Ph.D. degrees in electrical engineering from the Universidade Federal de Campina Grande, in 2004 and 2008, respectively. From 2007 to 2011, he was a Professor at the Industry Department in the Instituto Federal de Educac¸ao, ˜ Ciencia e Tecnologia do Rio Grande do Norte. He is ˆ currently Professor at Electrical Engineering Department in the Universidade Federal da Para´ıba. His research interests are in the applications of power electronics in power systems and power quality. Professor Darlan is SOBRAEP and IEEE member.

Euzeli C. Santos Jr, Universidade Federal de Campina Grande, CEP:58109-090, Campina Grande - PB, Brasil

received the B.S., M.S., and Ph.D. degrees in electrical engineering from the Federal University of Campina Grande (UFCG), in 2004, 2005, and 2007, respectively. He was a Visiting Scholar with Electric Machines and Power Electronics Laboratory, Texas A&M University, College Station, from 2006 to 2007. From August 2006 to March 2009, he was a Professor at the Federal Center of Technological Education of Para´ıba. From December 2010 to March 2011, he was a Visiting Professor at the University of Siegen, Germany, sponsored by DAAD/CAPES. Since March 2009, he has been a Professor in Electrical Engineering (UFCG). His research interests include power electronics and electrical drives.

Fabiano F. Costa, Universidade Federal do ABC, CEP:09210-170, Santo Andre - SP, Brasil

received the B.S., M.S. and PhD. degrees from University of São Paulo (USP), Federal University  of Paraíba (UFPB) and University of Campina Grande (UFCG) in 1997, 2001 and 2005 respectively, all in electrical engineering. He is presently an Assistant Professor at the Department of Electrical Engineering in Federal University of ABC (UFABC). His research interests include digital signal processing, power quality and modeling of dynamic systems.

Alexandre C. Castro, Universidade Federal da Para´ıba, CEP:58051-900, Joao Pessoa - PB, Brasil

eceived the B.S. and M.S. degrees in electrical engineering from the Universidade Federal da Para´ıba (UFPB) in 1995 and 2000, respectively. In 2006 received the Ph.D. degree in mechanical engineering from the UFPB. From 2002 to 2009, he was a Professor in the Instituto Federal de Educac¸ao, Ci ˜ encia e Tecnologia da Bahia. He is ˆ currently Professor at Electrical Engineering Department in the UFPB. His research interests are in the control applications in power systems and power quality

References

M. H. J. Bollen.Understanding Power Quality Problems-Voltage Sags and Interruptions.IEEE Press, NewYork, N.Y., 2000.

M. Dai, M. Nanda Marwali, J.-W. Jung, and A. Keyhani.A three-phase four-wire inverter control technique for a single distributed generation unit in island mode. IEEE Transactions on Power Electronics, 23(1):322-331, January 2008. https://doi.org/10.1109/TPEL.2007.911816 DOI: https://doi.org/10.1109/TPEL.2007.911816

N.-Y. Dai, M.-C. Wong, F. Ng, and Y.-D. Han. A FPGA-based generalized pulse width modulator for three-leg center-split and four-leg voltage source inverters. IEEE Transactions on Power Electronics, 23(8):1472-1484,May 2008. https://doi.org/10.1109/TPEL.2008.921103 DOI: https://doi.org/10.1109/TPEL.2008.921103

S. Fukuda and Y. Iwaji.Introduction of the harmonic distortion determining factor and its application to evaluating real time PWM inverters. IEEE Transactions on Industry Applications, 31(1):149-154,January/February 1995. https://doi.org/10.1109/28.363037 DOI: https://doi.org/10.1109/28.363037

Z. Chen, H. Mao, X. Yang, and Z. Wang. A study on pulse width errors of digitized naturally sampled PWM. InIEEE Power Electronics Specialists Conference, PESC 2008, pages 592 - 597, 2008.

H. W. Van der Broeck, H. C. Skudelny, and G. V. Stanke.Analysis and realization of a pulse width modulator based on voltage space vector.IEEE Transactions on IndustryApplications, 24(1):142-150, Jan/Feb 1988. https://doi.org/10.1109/28.87265 DOI: https://doi.org/10.1109/28.87265

G. Venkataramanann B. Wang and M. Illindala.Operation and control of a dynamic voltage restorer using transformer coupledH-bridge converters.IEEETransactions on Power Electronics, 21(4):1053-1061,July 2006. https://doi.org/10.1109/TPEL.2006.876836 DOI: https://doi.org/10.1109/TPEL.2006.876836

H. Yong, J. Xiaohua, and J. Jianguo. Parallel processing UPS and unbalanced voltage sag compensation. InProc.of IPEMC, pages 972-976, 2004.

G.-M. Lee, D.-C. Lee, and J.-K. Seok. Control of series active power filters compensating for source voltage unbalance and current harmonics.IEEE Transactions onIndustrial Electronics, 51(1):132-139, Feb 2004. https://doi.org/10.1109/TIE.2003.822040 DOI: https://doi.org/10.1109/TIE.2003.822040

W. F. Souza, M. A. S.-Mendes, and P. F. Seixas. PWM vetorial para inversor trifásico de quatro-braços. Eletrônica de Potência, 12(2):89-96, Jul 2007. https://doi.org/10.18618/REP.2007.2.089096 DOI: https://doi.org/10.18618/REP.2007.2.089096

X. Li, Z. Deng, Z. Chen, and Q. Fei.Analysis and simplification of three-dimensional space vector PWMfor three-phase four-leg inverters. IEEE Transactions onIndustry Applications, 58(2):450-454, Feb 2011. https://doi.org/10.1109/TIE.2010.2046610 DOI: https://doi.org/10.1109/TIE.2010.2046610

R. R. Sawant and M. C. Chandorkar. A multifunctional four-leg grid-connected compensator.IEEE Transactions On Industry Applications, 45(1):249-259, Jan/Feb 2009. https://doi.org/10.1109/TIA.2008.2009704 DOI: https://doi.org/10.1109/TIA.2008.2009704

I. J. Gabe, J. P. Costa, M. Stefanello, and H. Pinheiro. Modulação space vector estendida a conversores estáticos com braços em paralelo. Eletrônica de Potência, 12(3):205-216, Nov 2007. https://doi.org/10.18618/REP.2007.3.205216 DOI: https://doi.org/10.18618/REP.2007.3.205216

O. Ojo and P. Kshirsagar. Concise modulation strategies for four-leg voltage source inverters.IEEE Transactions on Power Electronics, 19(1):46-53, Jan 2004. https://doi.org/10.1109/TPEL.2003.820546 DOI: https://doi.org/10.1109/TPEL.2003.820546

M. I. Marei, E. F. El-Saadany, and M. M. A. Salama.Three-dimensional feedforward space vector modulation applied to multilevel diode-clamped converters. IEEETransactions on Industrial Electronics, 56(1):101-109,January 2009. https://doi.org/10.1109/TIE.2008.928110 DOI: https://doi.org/10.1109/TIE.2008.928110

Y. Zhang, Z. Zhao, and J. Zhu.A hybrid PWMapplied to high-power three-level inverter-fed induction-motor. IEEE Transactions on Industrial Electronics,58(8):3409-3420, Aug 2011. https://doi.org/10.1109/TIE.2010.2090836 DOI: https://doi.org/10.1109/TIE.2010.2090836

C. B. Jacobina, A. M. N. Lima, E. R. C. da Silva,R. N. C. Alves, and P. F. Seixas. Digital scalar pulse-width modulation: A simple approach to introduce non-sinusoidal modulating waveforms.IEEE Transactions on Power Electronics, 16(3):351-359, May 2001. https://doi.org/10.1109/63.923767 DOI: https://doi.org/10.1109/63.923767

S. R. Naidu and D. A. Fernandes. Generation Of unbalanced 3-phase voltages for dynamic voltage restoration using the 4-leg voltage source converter. In IEEE Power Electronics Specialists Conference, PESC2003, pages 17 - 21, 2007. https://doi.org/10.1109/PESC.2007.4342162 DOI: https://doi.org/10.1109/PESC.2007.4342162

S. R. Naidu and D. A. Fernandes.Dynamic voltage restorer based on 4-leg voltage source converter. IET Gen. Transm. Distrib., 3(5):437-447, May 2009. https://doi.org/10.1049/iet-gtd.2008.0411 DOI: https://doi.org/10.1049/iet-gtd.2008.0411

M. I. Marei, E. F. El-Saadany, and M. M. A. Salama.A new approach to control DVR based on symmetrical components estimation. IEEE Transactions on Power Delivery, 22(4):2017-2024, Oct 2008. https://doi.org/10.1109/TPWRD.2007.905537 DOI: https://doi.org/10.1109/TPWRD.2007.905537

D. A. Fernandes, S. R. Naidu, and C. A. E. Coura Jr. Instantaneous sequence-components resolution of 3-phase variables and its application to dynamic voltage restoration. IEEE Transactions on Instrumentation and Measurement, 58(8):2580-2587, Aug 2009. https://doi.org/10.1109/TIM.2009.2015634 DOI: https://doi.org/10.1109/TIM.2009.2015634

M. C. Cavalcanti, E. R. C. Silva, D. Boroyevich,W. Dong, and C. B. Jacobina.A feasible loss model for IGBT in soft-switching inverters. In IEEE Power Electronics Specialists Conference, PESC 2003,volume 4, pages 1845 - 1850, 2003.

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Published

2012-02-28

How to Cite

[1]
D. A. Fernandes, E. C. S. Jr, F. F. Costa, and A. C. Castro, “Two Digital-scalar PWM Schemes for Generating  ree-phase Unbalanced Voltages”, Eletrônica de Potência, vol. 17, no. 1, pp. 439–446, Feb. 2012.

Issue

Vol. 17 No. 1 (2012)

Section

Original Papers

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Copyright (c) 2012 Revista Eletrônica de Potência

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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