Transformer-Less Voltage Boosting Switched-Capacitor Inverter for PV Application

Articles in Press

Document Type : Research paper

Authors

1 Electrical and Electronic Engineering Department, Arka Jain University, Gamharia, Jharkhand- 832108, India.

2 Electrical Engineering Department, Government Engineering College, Siwan, Bihar- 841226, India.

3 School of Electrical Engineering, KIIT University, Bhubaneswar, Odisha- 841226, India.

Abstract

This study proposes a single-phase switched-capacitor (SC) topology that eliminates the need for a transformer and incorporates a shared ground. The topology utilizes eleven switches, one diode, and three capacitors to generate a nine-level waveform. The key attributes of the proposed design include zero leakage current(LC), voltage boosting capability, reduced voltage stress, and self-balancing of capacitor voltage. Furthermore, there is no need for extra balancing circuits or sensors to ensure the equilibrium of capacitor voltages. A comprehensive examination of the circuit description and operating principle has also been conducted. Through a concise comparison, the proposed topology has been shown to outperform existing alternatives in terms of component count, voltage stress, and gain. The utilization of the Simulation environment ensures the accuracy of the theoretical concept.

Keywords

Main Subjects

References

  1. F. B. Grigoletto, “Five-level transformerless inverter for single-phase solar photovoltaic applications,” IEEE J. Emerging Sel. Top. Power Electron., vol. 8, no. 4, pp. 3411– 3422, 2019.
  2. E. Romero-Cadaval, G. Spagnuolo, L. G. Franquelo, C. A. Ramos-Paja, T. Suntio, and W. M. Xiao, “Grid-connected photovoltaic generation plants: Components and operation,” IEEE Ind. Electron. Mag., vol. 7, no. 3, pp. 6–20, 2013.
  3. J. Xu, J. Han, Y. Wang, S. Habib, and H. Tang, “A novel scalar pwm method to reduce leakage current in three-phase two-level transformerless grid-connected vsis,” IEEE Trans. Ind. Electron., vol. 67, no. 5, pp. 3788–3797, 2019.
  4. M. J. Sathik, Z. Tang, Y. Yang, K. Vijayakumar, and F. Blaabjerg, “A new 5-level anpc switched capacitor inverter topology for photovoltaic applications,” in IECON 2019-45th Annu. Conf. IEEE Ind. Electron. Soc., vol. 1, pp. 3487–3492, IEEE, 2019.
  5. H. K. Jahan, “A new transformerless inverter with leakage current limiting and voltage boosting capabilities for gridconnected pv applications,” IEEE Trans. Ind. Electron., vol. 67, no. 12, pp. 10542–10551, 2019.
  6. H. Wang, L. Kou, Y.-F. Liu, and P. C. Sen, “A new six-switch five-level active neutral point clamped inverter for pv applications,” IEEE Trans. Power Electron., vol. 32, no. 9, pp. 6700–6715, 2016.
  7. M. Victor, F. Greizer, S. Bremicker, and U. Hübler, “Method of converting a direct current voltage from a source of direct current voltage, more specifically from a photovoltaic source of direct current voltage, into a alternating current voltage,” Aug. 12 2008. US Patent 7,411,802.
  8. M. Islam and S. Mekhilef, “H6-type transformerless singlephase inverter for grid-tied photovoltaic system,” IET Power Electron., vol. 8, no. 4, pp. 636–644, 2015.
  9. A. H. Sabry, Z. M. Mohammed, F. H. Nordin, N. N. Ali, and A. S. Al-Ogaili, “Single-phase grid-tied transformerless inverter of zero leakage current for pv system,” IEEE Access, vol. 8, pp. 4361–4371, 2019.
  10. Z. Liao, C. Cao, D. Qiu, and C. Xu, “Notice of violation of ieee publication principles: Single-phase common-groundtype transformerless pv grid-connected inverters,” IEEE Access, vol. 7, pp. 63276–63287, 2019.
  11. F. B. Grigoletto, “Five-level transformerless inverter for single-phase solar photovoltaic applications,” IEEE J. Emerging Sel. Top. Power Electron., vol. 8, no. 4, pp. 3411– 3422, 2019.
  12. Y. Gu, W. Li, Y. Zhao, B. Yang, C. Li, and X. He, “Transformerless inverter with virtual dc bus concept for cost-effective grid-connected pv power systems,” IEEE Trans. Power Electron., vol. 28, no. 2, pp. 793–805, 2012.
  13. Y. P. Siwakoti and F. Blaabjerg, “Common-ground-type transformerless inverters for single-phase solar photovoltaic systems,” IEEE Trans. Ind. Electron., vol. 65, no. 3, pp. 2100–2111, 2017.
  14. N. Sandeep, M. J. Sathik, U. R. Yaragatti, V. Krishnasamy, A. K. Verma, and H. R. Pota, “Common-ground-type five-level transformerless inverter topology with full dcbus utilization,” IEEE Trans. Ind. Appl., vol. 56, no. 4, pp. 4071–4080, 2020.
  15. Z. Liao, C. Cao, D. Qiu, and C. Xu, “Notice of violation of ieee publication principles: Single-phase common-groundtype transformerless pv grid-connected inverters,” IEEE Access, vol. 7, pp. 63276–63287, 2019.
  16. T. Qanbari, B. Tousi, and M. Farhadi-Kangarlu, “A novel vector-based pulse-width modulation for three-phase twolevel voltage source inverters,” J. Oper. Autom. Power Eng., vol. 11, no. 1, pp. 50–60, 2023.
  17. P. Pakbaz and A. Nahavandi, “A new single-phase single-stage boost inverter for photovoltaic applications,” J. Oper. Autom. Power Eng., vol. 11, no. 4, pp. 268–276, 2023.
  18. A. Baghbany Oskouei, M. Banaei, and M. Sabahi, “Two inputs five-level quasi-z-source inverter,” J. Oper. Autom. Power Eng., vol. 4, no. 2, pp. 132–142, 2016.
  19. M. Banaei, “Multi-stage dc-ac converter based on new dc-dc converter for energy conversion,” J. Oper. Autom. Power Eng., vol. 4, no. 1, pp. 42–53, 2016.
  20. M. D. Siddique and S. Mekhilef, “A new configuration of nine-level boost inverter with reduced component count,” e-Prime Adv. Electr. Eng. Electron. Energy, vol. 1, p. 100010, 2021.
  21. S. S. Lee, C. S. Lim, and K.-B. Lee, “Novel active-neutralpoint-clamped inverters with improved voltage-boosting capability,” IEEE Trans. Power Electron., vol. 35, no. 6, pp. 5978–5986, 2019.
  22. S. Upreti, B. Singh, and N. Kumar, “A new three-phase eleven level packed e-cell converter for solar grid-tied applications,” e-Prime Adv. Electr. Eng. Electron. Energy, vol. 4, p. 100152, 2023.
  23. M. D. Siddique, S. Mekhilef, N. M. Shah, J. S. M. Ali, M. Meraj, A. Iqbal, and M. A. Al-Hitmi, “A new single phase single switched-capacitor based nine-level boost inverter topology with reduced switch count and voltage stress,” IEEE Access, vol. 7, pp. 174178–174188, 2019.
  24. F. Mohammadi, J. Milimonfared, H. Rastegar, and M. FarhadiKangarlu, “Design of a single-phase transformerless gridconnected pv inverter considering reduced leakage current and lvrt grid codes,” J. Oper. Autom. Power Eng., vol. 9, no. 1, pp. 49–59, 2021.
Journal of Operation and Automation in Power Engineering

Articles in Press, Corrected Proof
Available Online from 23 November 2024

Files

History

  • Receive Date: 30 October 2023
  • Revise Date: 06 January 2024
  • Accept Date: 27 April 2024
  • First Publish Date: 23 November 2024

Share

How to cite

Statistics