Abstract
Reliable and efficient inverters are becoming essential in the current scenario of electrical power generation from renewable energy sources. Owing to inherent buck–boost ability and shoot-through immunity, the single-stage inverters are getting solid evaluation as compared to conventional inverters in the present era of renewable energy generation. However, the maximum attainable boosting of the single-stage inverters is limited by means of device stresses and spectral performance. This paper proposes a switched-capacitor-based quasi-switched boost neutral-point-clamped single-stage multilevel inverter. It is able to make desired AC output voltage in a single-stage conversion from a low-level DC voltage engendered by renewable sources such as fuel cell and PV cell. Further, it can attain high voltage gain at reduced voltage stresses on the switches, capacitors and diodes by cascading multiple switched-capacitor cells to quasi-switched boost network. The working principle and steady-state analysis of proposed topology are presented in order to obtain mathematical relation between input and output voltages. The effectiveness of the proposed inverter has been compared with other impedance-source multilevel inverters in terms of voltage gain, boosting capability, voltage stresses and efficiency. The operation of the proposed system is verified by MATLAB simulation. Also, a laboratory prototype is built and tested to verify the theoretical analysis.
Similar content being viewed by others
Abbreviations
- \(B\) :
-
Boost factor
- \(G\) :
-
Overall voltage gain of the inverter
- \(T_{\text{sw}}\) :
-
Switching time period in seconds
- \(D\) :
-
Shoot-through (ST) duty ratio
- M :
-
Modulation index
- \(V_{g}\) :
-
DC input voltage from fuel cell or battery
- \(V_{an}\) :
-
Phase voltage w.r.t. DC bus neutral
- \(V_{o}\) :
-
Maximum inverter output voltage
- \(V_{\text{in}}\), \(V_{{{\text{in}}(max)}}\) :
-
Average and maximum DC-link voltage available at inverter input terminals
- VCX, VCX1, VCY, VCY1 :
-
Voltage across the capacitors CX, CX1, CY and CY1, respectively
- VLX, VLY :
-
Voltage across the inductors LX and LY, respectively
- I in :
-
Average current through DC link
- ILX, ILY :
-
Average currents through inductors LX and LY, respectively
- iCX, iCY, iCX1, iCY1 :
-
Instantaneous currents through the capacitors CX, CY, CX1 and CY1, respectively
References
IRENA. Renewable capacity statistics 2019. https://www.irena.org/. Visited on 12 July 2019
Rodriguez, J.; Lai, J.S.; Peng, F.Z.: Multilevel inverters: a survey of topologies, controls, and applications. IEEE Trans. Ind. Electron. 49(4), 724–738 (2002)
Akagi, H.: Multilevel converters: fundamental circuits and systems. Proc. IEEE 99, 1–18 (2017)
Rodriguez, J.; Bernet, S.; Steimer, P.K.; et al.: A survey on neutral-point-clamped inverters. IEEE Trans. Ind. Electron. 57(7), 2219–2230 (2009)
Abu-Rub, H.; Holtz, J.; Rodriguez, J.; et al.: Medium voltage multilevel converters—state of the art, challenges, and requirements in industrial applications. IEEE Trans. Ind. Electron. 57(8), 2581–2596 (2010)
Maddugari, S.K.; Borghate, V.B.; Karasani, R.R.; et al.: A three-phase nine-level fault tolerant asymmetrical inverter. Arab. J. Sci. Eng. 44, 1779–1790 (2019)
Kumar, B.H.; Lokhande, M.M.; Reddy, K.R.; et al.: An improved space vector pulse width modulation for nine-level asymmetric cascaded H-bridge three-phase inverter. Arab. J. Sci. Eng. 44, 2453–2465 (2019)
Liu, Y.; Abu-Rub, H.; Loh, P.C.; et al.: Z-Source multilevel inverters. In: Impedance Source Power Electronic Converters, pp. 194–224. Wiley, Chichester (2016)
Biczel, P.: Power electronic converters in dc micro grid. In: Proceedings of the IEEE Compatibility in Power Electronics, pp. 1–6 (2007)
Wu, F.; Li, X.; Feng, F.; et al.: Multi-topology-mode grid connected inverter to improve comprehensive performance of renewable energy source generation system. IEEE Trans. Power Electron. 32(5), 3623–3633 (2017)
Peng, F.Z.: Z-source inverter. IEEE Trans. Ind. Appl. 39(2), 504–510 (2003)
Husev, O.; Blaabjerg, F.; Roncero-Clemente, C.R.; et al.: Comparison of impedance-source networks for two and multilevel buck–boost inverter applications. IEEE Trans. Power Electron. 31(11), 7564–7579 (2016)
Loh, P.C.; Gao, F.; Blaabjerg, F.: Topological and modulation design of three-level Z-source inverters. IEEE Trans. Power Electron. 23(5), 2268–2277 (2008)
Abdelhakim, A.; Blaabjerg, F.; Mattavelli, P.: Modulation schemes of the three phase impedance source inverters—Part I: classification and review. IEEE Trans. Ind. Electron. 65(8), 6309–6320 (2018)
Abdelhakim, A.; Blaabjerg, F.; Mattavelli, P.: Modulation schemes of the three phase impedance source inverters—Part II: comparative assessment. IEEE Trans. Ind. Electron. 65(8), 6321–6332 (2018)
Loh, P.C.; Gao, F.; Blaabjerg, F.; et al.: Pulse-width-modulated Z-source neutral-point-clamped inverter. IEEE Trans. Ind. Appl. 43, 1295–1308 (2007)
Loh, P.C.; Lim, S.W.; Gao, F.; et al.: Three-level Z-source inverters using a single LC impedance network. IEEE Trans. Power Electron. 22(2), 706–711 (2007)
Husev, O.; Roncero, C.C.; Romero-Cadaval, E.; et al.: Single phase three-level neutral-point-clamped quasi-Z-source inverter. IET Power Electron. 8(1), 1–10 (2015)
Anderson, J.; Peng, F.Z.: A class of quasi-z-source inverters. In: Industry Applications Society Annual Meeting, pp. 1–7 (2008)
Siwakoti, Y.P.; Peng, F.Z.; Blaabjerg, F.; et al.: Impedance-source networks for electric power conversion part I: a topological review. IEEE Trans. Power Electron. 30(2), 699–716 (2015)
Ellabban, O.; Abu-Rub, H.: Z-Source inverter: topology improvements review. IEEE Ind. Electron. Mag. 10(1), 6–24 (2016)
Sun, D.; Ge, B.; Yan, X.; et al.: Modelling, impedance design, and efficiency analysis of quasi-Z Source module in cascaded multilevel photovoltaic power system. IEEE Trans. Ind. Electron. 61(11), 6108–6117 (2014)
Pires, V.F.; Cordeiro, A.; Foito, D.; et al.: Quasi-Z-source inverter with a T-type converter in normal and failure mode. IEEE Trans. Power Electron. 31(11), 7462–7470 (2016)
Deng, K.; Zheng, J.; Mei, J.: Novel switched-inductor quasi-Z-source inverter. J. Power Electron. 14(1), 11–21 (2014)
Ravindranath, A.; Mishra, S.; Joshi, A.: Analysis and PWM control of switched boost inverter. IEEE Trans. Ind. Electron. 60(12), 5593–5602 (2013)
Nguyen, M.K.; Le, T.V.; Park, S.J.; Lim, Y.C.: A class of quasi switched boost inverters. IEEE Trans. Ind. Electron. 62(3), 1526–1536 (2015)
Sahoo, M.; Keerthipati, S.: A three-level LC-switching-based voltage boost NPC inverter. IEEE Trans. Ind. Electron. 64(4), 2876–2883 (2017)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ajaykumar, T., Patne, N.R. Switched-Capacitor-Based Neutral-Point-Clamped Quasi-Switched Boost Multilevel Inverter. Arab J Sci Eng 45, 1765–1775 (2020). https://doi.org/10.1007/s13369-019-04254-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13369-019-04254-2