A New Single-Source Switched-Capacitor Based 9-Level Boost Inverter Topology with Reduced Part Count Switched-Capacitor Based 9-Level Boost Inverter Topology
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Abstract
This study introduces a step-up 1-φ inverter based on a switched-capacitor (SC) configuration. The proposed topology (PT) incorporates twelve semiconductor switches, two capacitors, and a single power diode to produce a nine-level output voltage at the load terminal. This novel contribution details the structural framework, operating principles, modulation strategy, and the process for optimizing capacitance values. Additionally, simulation and experimental analyses have been performed across various loading conditions to validate the performance of the proposed inverter topology. A brief comparative analysis with existing advanced SC topologies is also provided, highlighting metrics such as component count per level, voltage gain, total standing voltage, and cost-effectiveness, thereby showcasing the benefits of this innovative approach.
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References
J. Rodriguez, J.-S. Lai, and F. Z. Peng, “Multilevel inverters: a survey of topologies, controls, and applications,” IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 724–738, Nov.2002.
D. Ahmadi and J. Wang, “Online selective harmonic compensation and power generation with distributed energy resources,” IEEE Trans. Power Electron., vol. 29, no. 7, pp. 3738–3747, Jul. 2014.
M. Vijeh, M. Rezanejad, E. Samadaei, and K. Bertilsson, “A General Review of Multilevel Inverters Based on Main Submodules: Structural Point of View,” IEEE Trans. Power Electron., vol. 34, no. 10, pp. 9479-9502, Oct. 2019.
S. Essakiappan, H. S. Krishnamoorthy, P. Enjeti, R. S. Balog, and S. Ahmed, “Multilevel medium-frequency link inverter for utility scale photovoltaic integration,” IEEE Trans. Power Electron., vol. 30, no. 7, pp. 3674–3684, Jul. 2015.
K. K. Gupta, A. Ranjan, P. Bhatnagar, L. K. Sahu, and S. Jain, “Multilevel inverter topologies with reduced device count: a review,” IEEE Trans. Power Electron., vol. 31, no. 1, pp. 135–151, Jan.2016.
K. C. Tseng, C.C. Huang, and W.Y. Shih “A High Step-Up Converter with a Voltage Multiplier Module for a Photovoltaic System.” IEEE Trans. Power electronic, Vol. 28, No. 6, June 2013.
Y. Hinago and H. Koizumi, “A Switched-Capacitor Inverter Using Series/Parallel Conversion With Inductive Load," IEEE Trans. Ind. Electron., vol. 59, no. 2, pp. 878-887, Feb. 2012.
Y. Ye, K. W. E. Cheng, J. Liu, and K. Ding, “A Step-Up Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing,” IEEE Trans. Ind. Electron., vol. 61, no. 12, pp. 6672-6680, Dec. 2014.
E. Babaei and S. S. Gowgani, “Hybrid Multilevel Inverter Using Switched Capacitor Units,” IEEE Transactions on Industrial Electronics, vol. 61, no. 9, pp. 4614–4621, Sep. 2014.
J. Liu, J. Wu, J. Zeng, and H. Guo, “A novel nine-level inverter employing one voltage source and reduced components as the high-frequency ac power source,” IEEE Trans. Power Electron., vol. 32, no. 4, pp. 2939–2947, June 2017.
R. Barzegarkhoo, M. Moradzadeh, E. Zamiri, H. Madadi Kojabadi, and F. Blaabjerg, “A New Boost Switched-Capacitor Multilevel Converter With Reduced Circuit Devices,” IEEE Trans. Power Electron., vol. 33, no. 8, pp. 6738-6754, Aug. 2018.
Y. Nakagawa and H. Koizumi, “A Boost Type Nine-Level Switched-Capacitor Inverter,” IEEE Trans. Power Electron. doi: 10.1109/TPEL.2018.2876158.
J. Liu, W. Lin, J. Wu and J. Zeng, “A Novel Nine-Level Quadruple Boost Inverter with Inductive-load Ability,” IEEE Trans. Power Electron. doi: 10.1109/TPEL.2018.2873188.
N. Sandeep, J. S. M. Ali, U. R. Yaragatti, and K. Vijayakumar, “Switched-Capacitor-Based Quadruple Boost Nine-Level Inverter,” IEEE Transactions on Power Electronics, vol. 34, no. 8, pp. 7147–7150, Aug. 2019.
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, 2018.
J. Zeng, J. Wu, J. Liu, and H. Guo, “A quasi-resonant switched-capacitor multilevel inverter with self-voltage balancing for single-phase high-frequency ac microgrids,” IEEE Trans. Ind. Inform., vol. 13, no. 5, pp. 2669–2679, Feb.2017.
M. D. Siddique et.al.“A New Single Phase Single Switched-Capacitor Based Nine-Level Boost Inverter Topology” IEEE Access ,Vol. 7, pp. 174178 – 174188, Dec.2019.
P. Bhatnagar, R.Agrawal, N.K. Dewangan, S. K. Jain and K. K. Gupta "Switched capacitors 9-level module (SC9LM) with reduced device count for multilevel DC to AC power conversion " IET Electric Power Applications, Vol. 13, no. 10, pp. 1544 – 1552, Oct. 2019.
N. Sandeep and U. R. Yaragatti, “Operation and Control of an Improved Hybrid Nine-Level Inverter,” IEEE Trans. Ind. Appl., vol. 53, no. 6, pp. 5676–5686, Nov. 2017.
M. D. Siddique, S. Mekhilef, N. M. Shah, J. S. M. Ali, and F. Blaabjerg, “A New Switched-Capacitor 7L Inverter with Triple Voltage Gain and Low Voltage Stress,” IEEE Trans. Circuits Syst. II Express Briefs, pp. 1–1, July 2019.
S. S. Lee, “A Single-Phase Single-Source 7-Level Inverter With Triple Voltage Boosting Gain,” IEEE Access, vol. 6, pp. 30005–30011, May 2018.
W. Peng, Q. Ni, X. Qiu, and Y. Ye “Seven-Level Inverter with Self-Balanced Switched-Capacitor and Its Cascaded Extension” IEEE Transactions on Power Electronics. IEEE Transactions on Power Electronics,vol. 34, no,12,pp. 11889 - 11896 ,March 2019.
T. Roy, P. K. Sadhu, and A. Dasgupta, “Cross-Switched Multilevel Inverter Using Novel Switched Capacitor Converters,” IEEE Transactions on Industrial Electronics, vol. 66, no. 11, pp. 8521–8532, Nov. 2019.