Simulation Models For Three-Phase Grid Connected PV Inverters Enabling Current Limitation Under Unbalanced Faults


  • L. H. Lam Faculty of Electrical Engineering, The University of Danang—University of Science and Technology, Vietnam
  • T. D. H. Phuc Faculty of Electrical Engineering, The University of Danang—University of Science and Technology, Vietnam
  • N. H. Hieu Faculty of Electrical Engineering, The University of Danang—University of Science and Technology, Vietnam


Normally unbalanced grid voltage dips may lead to unbalanced non-sinusoidal current injections, DC-link voltage oscillations, and active and/or reactive power oscillations with twice the grid fundamental frequency in three-phase grid-connected Photovoltaic (PV) systems. Double grid frequency oscillations at the DC-link of the conventional two-stage PV inverters can further deteriorate the DC-link capacitor, which is one of the most important limiting components in the system. Proper control of these converters may efficiently address this problem. In such solutions, Current Reference Calculation (CRC) is one of the most important issues that should be coped with the reliable operation of grid-connected converters under unbalanced grid faults. Therefore, this paper proposes and simulates CRC methods and presents the results in order to improve the quality of the grid-connected PV system under unbalanced grid voltage fault.


Photovoltaic (PV) systems, unbalance voltage, two–stage converters, power oscillation, DC–link voltage oscillation


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J. Hossain, A. Mahmud, Renewable energy integration: Challenges and solutions, Springer Science & Business Media, 2014 DOI:

M. A. Aman, S. Ahmad, B. Noor, F. W. Karam, “Mitigating the adverse impact of un-deterministic distributed generation on a distribution system considering voltage profile”, Engineering, Technology & Applied Science Research, Vol. 8, No. 3, pp. 2998--3003, 2018 DOI:

A. Junyent-Ferre, O. Gomis-Bellmunt, T. C. Green, D. E. Soto-Sanchez, “Current control reference calculation issues for the operation of renewable source grid interface VSCs under unbalanced voltage sags”, IEEE Transactions on Power Electronics, Vol. 26, No. 12, pp. 3744-3753, 2011 DOI:

P. A. N. Garcia, J. L. R. Pereira, S. Carneiro, Jr., V. M. da Costa, N. Martins, “Three-phase power flow calculations using the current Injection”, IEEE Transactions on Power Systems, Vol. 15, No. 2, pp. 508-514, 2000 DOI:

T. Khatib, W. Elmenreich, Modeling of photovoltaic systems using Matlab: Simplified green codes, Wiley, 2016 DOI:

A. E. Alvarez, A. Junyent-Ferre, O. Gomis-Bellmunt, “Active and reactive power control of grid connected distributed generation systems”, in: Modeling and control of sustainable power systems. Green energy and technology, pp. 47-81, Springer, 2012 DOI:

A. von Jouanne, B. Banerjee, “Assessment of voltage unbalance”, IEEE Transactions on Power Delivery, Vol. 16, No. 4, pp. 782-790, 2001 DOI:

F. Shahnia, A. Ghosh, G. Ledwich, F. Zare, “Voltage unbalance reduction in low voltage distribution networks with rooftop PVs”, 20th Australasian Universities Power Engineering Conference, Christchurch, New Zealand, December 5-8, 2010

E. Afshari, G. R. Moradi, R. Rahimi, B. Farhangi, Y. Yang, F. Blaabjerg, S. Farhangi, “Control strategy for three-phase grid-connected PV inverters enabling current limitation under unbalanced faults”, IEEE Transactions on Industrial Electronics, Vol. 64, No. 11, pp. 8908-8918, 2017 DOI:

Z. Yan, Y. Xue, X. P. Zhang, “PI parameters determination in dq decoupling control of VSC terminals”, 13th IET International Conference on AC and DC Power Transmission, Manchester, UK, February 14-16, 2017

N V. Tan, D. M. Quan, T. A. Tuan, P. V. Kien, L. H. Lam, H. H. Long, “So sanh cac thuat toan bat diem cong suat cuc dai bang phuơng phap mo phong va thuc nghiem”, Tap chi Khoa hoc va Cong nghe, Vol. 2, No. 11, pp. 64-68, 2018 (in Vietnamese)

H. Wang, F. Blaabjerg, “Reliability of capacitors for DC-link applications in power electronic converters: An overview”, IEEE Transactions on Industry Applications, Vol. 50, No. 5, pp. 3569-3578, 2014 DOI:

N. H. Hieu, L. H. Lam, “Using double fed induction generator to enhance voltage stability and solving economic issue”, IEEE International Conference on Sustainable Energy Technologies, Hanoi, Vietnam, November 14-16, 2016 DOI:

N. H. Hieu, L. H. Lam, C. T. Luu, T. Q. Tuan, “Effects of DFIG wind power generation on Vietnam power system operation”, IEEE Eindhoven PowerTech, Eindhoven, Netherlands, June 29-July 2, 2015

A. B. Lajimi, S. A. Gholamian, M. Shahabi, “Modeling and control of a DFIG-based wind turbine during a grid voltage drop”, Engineering, Technology & Applied Science Research, Vol. 1, No. 5, pp. 121-125, 2011 DOI:

P. Rodriguez, R. Teodorescu, I. Candela, A. V. Timbus, M. Liserre, F. Blaabjerg, “New positive-sequence voltage detector for grid synchronization of power converters under faulty grid conditions”, 37th IEEE Power Electronics Specialists Conference, Jeju, South Korea, June 18-22, 2006

R. Teodorescu, M. Liserre, P. Rodriguez, Grid converters for photovoltaic and wind power systems, Wiley, 2011 DOI:

S. Chattopadhyay, M. Mitra, S. Sengupta, “Clarke and Park transform”, in: Electric power quality. Power systems, Springer, 2011 DOI:

Mathworks, “Simulation and model-dased design”, available at:

A Yazdani, R Iravani, Voltage-sourced converters in power systems, Wiley, 2010 DOI:


How to Cite

L. H. Lam, T. D. H. Phuc, and N. H. Hieu, “Simulation Models For Three-Phase Grid Connected PV Inverters Enabling Current Limitation Under Unbalanced Faults”, Eng. Technol. Appl. Sci. Res., vol. 10, no. 2, pp. 5396–5401, Apr. 2020.


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