Review on Step-Up Switched-Capacitor Voltage Balancing Converter for NPC Multilevel Inverter

Abstract

A new voltage balancing converter suitable for Neutral-Point-Clamped (NPC) Multilevel Inverter (MLI). The switched capacitor used in the proposed converter is able to balance the DC link capacitor voltage effectively by using proper switching states. The proposed balancing converter can be extended to any higher levels and it can boost the DC input voltage to a higher voltage levels without using any magnetic components. This feature allows the converter to operate with the boosting capability of the input voltage to the desired output voltage while ensuring the self-balancing. In this system the proposed converter is used for a grid system with NPC multilevel inverter, which is controlled using vector control scheme. The proposed grid connected system with associated controllers and maximum power point tracking (MPPT) is implemented in Matlab / Sim Power System and experimentally validated using SPACE system and designed converters. The simulation and experimental results show that the proposed topology can effectively balance the DC link voltage extract maximum power from PV module and inject power to the grid under varying solar irradiances with very good steady state and dynamic performances.

Country : India

1 Harshadeep N. Patil2 Prof. S.G. Kanade

  1. Student, M.E., Power System, TSSM's Bhivarabai Sawant College of Engineering and Research, Pune, Maharashtra, India
  2. Professor, M.E., Power System, TSSM's Bhivarabai Sawant College of Engineering and Research, Pune, Maharashtra, India

IRJIET, Volume 6, Issue 4, April 2022 pp. 147-149

doi.org/10.47001/IRJIET/2022.604035

References

  1. P. R. Bana, K. P. Panda, R. T. Naayagi, P. Siano, and G. Panda, ``Recently developed reduced switch multilevel inverter for renewable energy integration and drives application: Topologies, comprehensive analysis and comparative evaluation,'' IEEE Access, vol. 7, pp. 54888_54909, 2019.
  2. S. Shuvo, E. Hossain, T. Islam, A. Akib, S. Padmanaban, and M. Z. R. Khan, ``Design and hardware implementation considerations of modified multilevel cascaded H-Bridge inverter for photovoltaic system,'' IEEE Access, vol. 7, pp. 16504_16524, 2019.
  3. F. Z. Peng, ``A generalized multilevel inverter topology with self voltage balancing,'' IEEE Trans. Ind. Appl., vol. 37, no. 2, pp. 611_618, Mar./Apr. 2001.
  4. A.Taghvaie, J. Adabi, and M. Rezanejad, ``A self-balanced step-up multilevel inverter based on switched-capacitor structure,'' IEEE Trans. Power Electron., vol. 33, no. 1, pp. 199_209, Jan. 2018.
  5. V. Dargahi, A. K. Sadigh, M. Abarzadeh, S. Eskandari, and K. A. Corzine, ``A new family of modular multilevel converter based on modied ying-capacitor multicell converters,'' IEEE Trans. Power Electron., vol. 30, no. 1, pp. 138_147, Jan. 2015.
  6. J. Shen, S. Schröder, R. Rösner, and S. El-Barbari, ``A comprehensive study of neutral-point self-balancing effect in neutral-point-clamped three-level inverters,'' IEEE Trans. Power Electron., vol. 26, no. 11, pp. 3084_3095, Nov. 2011.
  7. A.Nabae, I. Takahashi, and H. Akagi, ``A new neutral-point-clamped PWM inverter,'' IEEE Trans. Ind. Appl., vol. IA-17, no. 5, pp. 518_523, Sep. 1981.
  8. A.Tripathi and G. Narayanan, ``Torque ripple minimization in neutral point clamped three-level inverter fed induction motor drives operated at low-switching-frequency,'' IEEE Trans. Ind. Appl., vol. 54, no. 3, pp. 2370_2380, May 2018.
  9. W. Zeng, R. Li, and X. Cai, “A new hybrid modular multilevel converter with integrated energy storage,'' IEEE Access, vol. 7, pp. 172981_172993, 2019.
  10. M. H. Ahmed, M.Wang, M. A. S. Hassan, and I. Ullah, ``Power loss model and efficiency analysis of three-phase inverter based on SiC MOSFETs for PV applications,'' IEEE Access, vol. 7, pp. 75768_75781, 2019.
  11. B. R. Lin and T. C.Wei, ``A novel NPC inverter for harmonics elimination and reactive power compensation,'' IEEE Trans. Power Del., vol. 19, no. 3, pp. 1449_1456, Jul. 2004.
  12. H. Akagi, H. Fujita, S. Yonetani, and Y. Kondo, ``A 6.6-kV transformer less STATCOM based on a ve-level diode-clamped PWM converter: System design and experimentation of a 200-V 10-kVA laboratory model,'' IEEE Trans. Ind. Appl., vol. 44, no. 2, pp. 672_680, Mar. 2008.
  13. H. Xiao and S. Xie, “Transformer less split-inductor neutral point clamped three-level PV grid-connected inverter,'' IEEE Trans. Power Electron., vol. 27, no. 4, pp. 1799_1808, Apr. 2012.