Skip to main content

A Temporary Overvoltages Mitigation Strategy for Grid-Connected Photovoltaic Systems Based on Current-Source Inverters


Temporary overvoltages (TOVs) typically caused by short-circuit faults and switching events can impose considerable damage on power system equipment. Furthermore, the penetration of distributed generations into the utility grids may intensify the problem arising from the TOVs. Despite recent research advancements, the TOV problems with current-source inverter (CSI)-based photovoltaic (PV) systems have not been investigated comprehensively. This paper proposes a combination of virtual impedance and modified switching strategy for grid-connected CSI-based PV systems. The virtual impedance-based control damps current and voltage oscillations. On the other hand, the proposed pulse width modulation strategy restricts power injection during the fault conditions. Simulation results confirm that the proposed approach effectively mitigates the TOV without controller mode switching between the standard and fault conditions.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12


  1. Aapro A, Messo T, Roinila T, Suntio T (2017) Effect of active damping on output impedance of three-phase grid-connected converter. IEEE Trans Ind Electron 64(9):7532–7541

    Article  Google Scholar 

  2. Bloemink JM, Iravani MR (2012) Control of a multiple source microgrid with built-in islanding detection and current limiting. IEEE Trans Power Deliv 27(4):2122–2132

    Article  Google Scholar 

  3. Chen L et al (2014) Reducing the fault current and overvoltage in a distribution system with distributed generation units through an active type SFCL. IEEE Trans Appl Superconduct 24(3):1–5

    MathSciNet  Google Scholar 

  4. Dash PP, Kazerani M (2011) Dynamic modeling and performance analysis of a grid-connected current-source inverter-based photovoltaic system. IEEE Trans Sustain Energy 2(4):443–450

    Article  Google Scholar 

  5. Didier G, Lévêque J (2014) Influence of fault type on the optimal location of superconducting fault current limiter in electrical power grid. Int J Electr Power Energy Syst 56:279–285

    Article  Google Scholar 

  6. Etemadi AH, Iravani R (2013) Overcurrent and overload protection of directly voltage-controlled distributed resources in a microgrid. IEEE Trans Ind Electron 60(12):5629–5638

    Article  Google Scholar 

  7. Geng Y, Yun Y, Chen R et al (2018) Parameters design and optimization for LC-type off-grid inverters with inductor-current feedback active damping. IEEE Trans Power Electron 33:703–715

    Article  Google Scholar 

  8. Ghanbari T, Farjah E (2013) Unidirectional fault current limiter: an efficient interface between the microgrid and main network. IEEE Trans Power Syst 28(2):1591–1598

    Article  Google Scholar 

  9. Ghoddami H, Yazdani A (2015) A mitigation strategy for temporary overvoltages caused by grid-connected photovoltaic systems. IEEE Trans Energy Convers 30(2):413–420

    Article  Google Scholar 

  10. Hwang J et al (2013) Validity analysis on the positioning of superconducting fault current limiter in neighboring AC and DC microgrid. IEEE Trans Appl Superconduct 23(3):5600204

    Article  Google Scholar 

  11. Liu T, Liu J, Liu Z, Liu Z (2019) A study of virtual resistor-based active damping alternatives for LCL resonance in grid-connected voltage source inverters. IEEE Trans Power Electron 35:247–262

    Article  Google Scholar 

  12. Lu X, Wang J, Guerrero J, Zhao D (2018) Virtual-impedance-based fault current limiters for inverter dominated AC microgrids. IEEE Trans Smart Grid 9:1599–1612

    Article  Google Scholar 

  13. Miao Z, Yao W, Lu Z (2019) Single-cycle-lag compensator-based active damping for digitally controlled LCL/LLCL-type grid-connected inverters. IEEE Trans Ind Electron 67:1980–1990

    Article  Google Scholar 

  14. Moon W et al (2013) A study on the application of a superconducting fault current limiter for energy storage protection in a power distribution system. IEEE Trans Appl Superconduct 23(3):5603404

    Article  Google Scholar 

  15. Plet CA et al (2010) Fault response of grid-connected inverter dominated networks. In: IEEE PES general meeting, IEEE

  16. Radwan AAA, Mohamed YAI (2013) Analysis and active suppression of AC-and DC-side instabilities in grid-connected current-source converter-based photovoltaic system. IEEE Trans Sustain Energy 4(3):630–642

    Article  Google Scholar 

  17. Rangarajan S, Collins E, Fox J (2018) Smart PV and SmartPark inverters as suppressors of TOV phenomenon in distribution systems. IET Gener Trans Distrib 12:5909–5917

    Article  Google Scholar 

  18. Robert M, Sakib M, Succar S (2017) Impacts of substation transformer backfeed at high PV penetrations. In: IEEE power & energy society general meeting, IEEE

  19. Ropp ME, Schutz D, Cozine S (2011) Temporary overvoltage issues in distribution-connected photovoltaic systems and mitigation strategies. In: Proceedings of 47th Minnesota power systems conference

  20. Saad H, Dennetière S (2019) Study on TOV after fault recovery in VSC based HVDC systems. In: 2019 IEEE milan powertech. IEEE, pp 1–6

  21. Schauder C (2011) Impact of FERC 661-A and IEEE 1547 on photovoltaic inverter design. In: 2011 IEEE power and energy society general meeting, IEEE

  22. Schork F, Brocke R, Rock M (2018) Analysis of temporary overvoltages in AC-grids. In: NEIS 2018; conference on sustainable energy supply and energy storage systems. VDE, pp 1–6

  23. Wieserman L, McDermott TE (2014) Fault current and overvoltage calculations for inverter-based generation using symmetrical components. In: 2014 IEEE energy conversion congress and exposition (ECCE), IEEE

  24. Zamani MA, Yazdani A, Sidhu TS (2012) A control strategy for enhanced operation of inverter-based microgrids under transient disturbances and network faults. IEEE Trans Power Deliv 27(4):1737–1747

    Article  Google Scholar 

Download references

Author information



Corresponding author

Correspondence to S. Masoud Barakati.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Azghandi, M.A., Barakati, S.M. A Temporary Overvoltages Mitigation Strategy for Grid-Connected Photovoltaic Systems Based on Current-Source Inverters. Iran J Sci Technol Trans Electr Eng 44, 1253–1262 (2020).

Download citation


  • Current-source inverter (CSI)
  • Distributed generation (DG)
  • Photovoltaic (PV)
  • Temporary overvoltage (TOV)
  • Virtual impedance