Control of three-phase grid-connected inverters under unbalanced voltage faults
Corressponding author's email:
thotq@hcmute.edu.vnKeywords:
Grid-connected inverters, unbalanced voltages, current limitation, reactive power compensation, negative sequencesAbstract
Grid-connected inverters using renewable energies such as wind and photovoltaic powers are adopted very popularly with increasing capacity. Therefore, they are significantly affected when the unbalanced grid voltages occur. At that time, the negative sequences appear, traditional current controllers in grid-connected inverters usually do not consider these components. Thus, they can cause over-current of the inverters and make the power semiconductor components damage. This paper proposes a method for controlling grid-connected inverters with over-current protection under unbalanced grid voltages. The simulated results have validated the performance of the proposed method compared with that of the traditional one.
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References
Z. Chen, J. M. Guerrero, F. Blaabjerg, and S. Member, “A Review of the State of the Art of Power Electronics for Wind Turbines,” IEEE Trans. Power Electron., vol. 24, no. 8, pp. 1859–1875, 2009.
R. Teodorescu, M. Liserre, and P. Rodriguez, Grid Converters for Photovoltaic and Wind Power Systems. 2011.
M. L. and P. C. L. R. Teodorescu, F. Blaabjerg, “Proportional-resonant controllers and filters for grid-connected voltage-source converters,” in IEE Proc.-Electr. Power Appl, 2006, vol. 153, no. 5, pp. 750–762.
G. De Donato, G. Scelba, G. Borocci, F. Giulii Capponi, and G. Scarcella, “Fault-Decoupled Instantaneous Frequency and Phase Angle Estimation for Three-Phase Grid-Connected Inverters,” IEEE Trans. Power Electron., vol. 31, no. 4, pp. 2880–2889, 2016.
IEEE, “IEEE Recommended Practice for Utility Interface of Photovoltaic (PV) Systems,” IEEE Std 929-2000. 2000.
IEEE Standard, “IEEE P1547 . 2 TM / D 7 Draft Application Guide for IEEE Std 1547 , Standard for Interconnecting Distributed Resources With Electric Power Systems,” no. March. 2007.
IEEE Standard, “IEEE Application Guide for IEEE Std 1547(TM), IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems,” IEEE Std 1547.2-2008, no. April, pp. 1–217, 2009.
Z. Rymarski, K. Bernacki, and L. Dyga, “A Control for an Unbalanced 3-Phase Load in UPS Systems,” Elektron. ir Elektrotechnika, vol. 24, no. 4, 2018.
P. Rodríguez, R. Teodorescu, I. Candela, A. V. Timbus, M. Liserre, and F. Blaabjerg, “New positive-sequence voltage detector for grid synchronization of power converters under faulty grid conditions,” in PESC Record - IEEE Annual Power Electronics Specialists Conference, 2006, pp. 1–7.
P. Ç. Rodríguez, A. Ç. Luna, M. Ë. Ciobotaru, R. Ë. Teodorescu, and F. Ë. Blaabjerg, “Advanced Grid Synchronization System for Power Converters under Unbalanced and Distorted Operating Conditions,” in Proc. 32nd Ann. Conf. IEEE Ind. Elect., (IECON), 2006, no. 2, pp. 5173–5178.
R. Zeng, L. Xu, L. Yao, and S. J. Finney, “Analysis and control of modular multilevel converters under asymmetric arm impedance conditions,” IEEE Trans. Ind. Electron., vol. 63, no. 1, pp. 71–81, 2016.
X. Guo, W. Liu, X. Zhang, X. Sun, Z. Lu, and J. M. Guerrero, “Flexible control strategy for grid-connected inverter under unbalanced grid faults without PLL,” IEEE Trans. Power Electron., vol. 30, no. 4, pp. 1773–1774, 2015.
Y. Zhang and C. Qu, “Table-Based Direct Power Control for Three-Phase AC/DC Converters under Unbalanced Grid Voltages,” IEEE Trans. Power Electron., vol. 30, no. 12, pp. 7090–7099, 2015.
M. P. Kazmierkowski, “A Review of Power Theory,” IEEE Ind. Electron. Mag., vol. Fall, pp. 2007–2007, 2007.
L. Tang and B. T. Ooi, “Managing zero sequence in voltage source converter,” Conf. Rec. Annu. Meet. (IEEE Ind. Appl. Soc., vol. 2, pp. 795–802, 2002.
A. A. Montanari and A. M. Gole, “Enhanced Instantaneous Power Theory for Control of Grid Connected Voltage Sourced Converters under Unbalanced Conditions,” IEEE Trans. Power Electron., vol. 32, no. 8, pp. 6652–6660, 2017.
M. A. Shuvra, S. Member, and U. N. C. Charlotte, “Selective Harmonic Compensation by Smart Inverters using Multiple-Complex-Coefficient-Filter ( MCCF ) during Unbalanced Fault Condition,” in 2017 North American Power Symposium (NAPS), 2017.
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