A Five-Level Current-Source Inverter for Grid-Connected or High-Power Three-Phase Wound-Field Synchronous Motor Drives
Abstract
Simple converter structure, inherent short-circuit protection and regenerative capability are the most important advantages of current-source inverters (CSI’s) which have made them suitable for medium-voltage high-power drives. Usually in grid-connected gas turbine generators or pumped storage hydro power plants, efficient and reliable current-source load-commutated inverters (LCI’s) with thyristor switches are employed. Also, this type of CSI is widely used in very large drives with power ratings of tens of megawatts to supply wound-field synchronous motors (WFSM’s). However, LCI’s suffer from some disadvantages such as large torque pulsations, poor power factor, and start-up criticalities. In this paper, a novel multilevel-based CSI is proposed. The proposed converter consists of one LCI and one CSI bridge with self-turn-off switches along with a voltage clamping circuit. The CSI switches are forced commutated; hence, a voltage clamping circuit is employed to limit voltage spikes caused by current variations in inductive paths during commutation transients. Drastic reduction in harmonic distortion of stator current and improved fundamental power factor are achieved by the proposed topology. In addition, torque pulsations are reduced remarkably for normal and starting operating conditions. Comprehensive analysis of the proposed structure is presented and the design of converter components is elaborated.
Keywords:
current-source inverter (CSI), five-level current waveform, load-commutated inverter (LCI), voltage clamping circuit, wound-field synchronous motor (WFSM) driveDownloads
References
B. Wu, J. Pontt, J. Rodríguez, S. Bernet, S. Kouro, “Current-source converter and cycloconverter topologies for industrial medium-voltage drives”, IEEE Trans. Ind. Electron., Vol. 55, No. 7, pp. 2786–2797, 2008 DOI: https://doi.org/10.1109/TIE.2008.924175
Q. Wei, B. Wu, D. Xu, N. R. Zargari, “A natural-sampling-based SVM scheme for current source converter with superior low-order harmonics performance”, IEEE Trans. Power Electron., Vol. 31, No. 9, pp. 6144-6154, 2016 DOI: https://doi.org/10.1109/TPEL.2015.2502780
Y. Zhang, Y. W. Li, “Investigation and suppression of harmonics interaction in high-power PWM current-source motor drives”, IEEE Trans. Power Electron., Vol. 30, No. 2, pp. 668-679, 2015 DOI: https://doi.org/10.1109/TPEL.2014.2310955
B. Wu, S. B. Dewan, G. R. Slemon, “PWM-CSI inverter for induction motor drives”, IEEE Trans. Ind. Appl., Vol. 28, No. 1, pp. 64-71, 1992 DOI: https://doi.org/10.1109/28.120202
H. Mok, S. Sul, M. Park, “A load commutated inverter-fed induction motor drive system using a novel dc-side commutation circuit”, IEEE Trans. Ind. Appl., Vol. 30, No. 3, pp. 736-745, 1994 DOI: https://doi.org/10.1109/28.293724
E. Levi, “Multiphase electric machines for variable-speed applications”, IEEE Trans. Ind. Electron., Vol. 55, No. 5, pp. 1893–1909, 2008 DOI: https://doi.org/10.1109/TIE.2008.918488
H. Stemmler, “High-power industrial drives”, Proc. IEEE, Vol. 82, Vo. 8, pp. 1266–1286, 1994 DOI: https://doi.org/10.1109/5.301688
S. Mohamadian, A. Tessarolo, S. Castellan, A. Shoulaie, “Steady-state simulation of LCI-fed synchronous motor drives through a computationally-efficient algebraic method”, IEEE Trans. Power Electron., Vol. 32, No. 1, pp. 452–470, 2016 DOI: https://doi.org/10.1109/TPEL.2016.2522919
T. J. Besselmann, S. Van de Moortel, S. Almér, P. Jörg, H. J. Ferreau, “Model predictive control in the multi-megawatt range”, IEEE Trans. Ind. Electron., Vol. 63, No. 7, pp. 4641-4648, 2016 DOI: https://doi.org/10.1109/TIE.2015.2504346
N. Sivakumar, D. Das, N. P. Padhy, “Variable speed operation of reversible pump-turbines at Kadamparai pumped storage plant – A case study”, Energy Convers. and Manage., Vol 78, pp. 96-104, 2014 DOI: https://doi.org/10.1016/j.enconman.2013.10.048
F. Wang, J. Jiang, “A novel static frequency converter based on multilevel cascaded H-bridge used for the startup of synchronous motor in pumped-storage power station”, Energy Convers. and Manage., Vol 52, pp. 2085-2091, 2011 DOI: https://doi.org/10.1016/j.enconman.2010.12.018
J. Song-Manguelle, C. Sihler, S. Schramm, “A general approach of damping torsional resonance modes in multi-megawatt applications”, IEEE Trans. Ind. Appl., Vol. 47, No. 3, pp. 1390–1399, 2011 DOI: https://doi.org/10.1109/TIA.2011.2128292
K. S. Smith, L. Ran, “Torsional resonance risk management in islanded industrial power systems supplying large VFDs”, IEEE Trans. Ind. Appl., Vol. 44, No. 6, pp. 1841-1850, 2008 DOI: https://doi.org/10.1109/TIA.2008.2006294
S. Schramm, C. Sihler, J. Song-Manguelle, P. Rotondo, “Damping torsional inter-harmonic effects of large drives”, IEEE Trans. Power Electron., Vol. 25, No. 4, pp. 1090–1098, 2010 DOI: https://doi.org/10.1109/TPEL.2009.2033274
J. R. Rodriguez, J. Pontt, P. Newman, R. Musalem, H. Miranda, L. Moran, “Technical evaluation and practical experience of high-power grinding mill drives in mining applications”, IEEE Trans. Ind. Appl., Vol. 41, No. 3, pp. 866–874, 2005 DOI: https://doi.org/10.1109/TIA.2005.847321
A. Tessarolo, S. Castellan, R. Menis, G. Ferrari, “On the modeling of commutation transients in split-phase synchronous motors supplied by multiple load-commutated inverters”, IEEE Trans. Ind. Electron., Vol. 57, No. 1, pp. 35–43, 2010 DOI: https://doi.org/10.1109/TIE.2009.2031182
B. Singh, S. Singh,and S. P. H. Chender, “Harmonic mitigation in LCI-fed synchronous motor drives”, IEEE Trans. Energy Convers., Vol. 25, No. 2, pp. 369–380, 2010 DOI: https://doi.org/10.1109/TEC.2009.2038369
S. Mohamadian, A. Tessarolo, A. Shoulaie, “Design of an efficient starting circuit for LCI-fed synchronous motor drives”, 5th Annual International Power Electronics, Drive Systems and Technologies Conference (PEDSTC), pp. 31-36, February, 2014 DOI: https://doi.org/10.1109/PEDSTC.2014.6799339
B. K. Bose, Modern power electronics and AC drives. Prentice-Hall PTR, Upper Saddle River, NJ, 2002
D. R. Grafham, F. B. Golden, SCR Manual, 6th edition. General Electric Company, Syracruse, NY, 1979
G. Seguier, F. Labrique, Power Electronic Converters, DC-AC Conversion. Springer-verlag, 1993 DOI: https://doi.org/10.1007/978-3-642-50322-1
S. Kwak, H. A. Toliyat, “A current source inverter with advanced external circuit and control method”, IEEE Trans. Ind. Appl., Vol. 42, No. 6, pp. 1496-1507, 2008 DOI: https://doi.org/10.1109/TIA.2006.882620
S. Mohamadian, A. Tessarolo, A. Shoulaie, “Field oriented control of LCI-fed WFSM drives in stator flux reference frame”, 5th Annual International Power Electronics, Drive Systems and Technologies Conference (PEDSTC), pp. 19-24, February, 2014 DOI: https://doi.org/10.1109/PEDSTC.2014.6799337
C. M. Ong, Dynamic Simulation of Electric Machinery, Prentice-Hall PTR, Upper Saddle River, NJ, 1998.
S. Kwak, H. A. Toliyat, “Multilevel converter topology using two types of current-source inverters”, IEEE Trans. Ind. Appl., Vol. 42, No. 6, pp. 1558-1564, 2006 DOI: https://doi.org/10.1109/TIA.2006.882645
Downloads
How to Cite
License
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.
