An Improved and Efficient High-Boost Switched Capacitor Multilevel Inverter

Pratik Kar; Durgesh Prasad Bagarty; Prakash Kumar Ray; Rachita Ruchismita Sarangi; Asit Mohanty

doi:10.2478/pead-2026-0009

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An Improved and Efficient High-Boost Switched Capacitor Multilevel Inverter

Power Electronics and Drives

Volume 11 (2026): Issue 1 (January 2026)

By: Pratik Kar , Durgesh Prasad Bagarty , Prakash Kumar Ray , Rachita Ruchismita Sarangi and Asit Mohanty

Open Access

|Apr 2026

Abstract

This paper presents a fundamental nine-level switched-capacitor multilevel inverter (CSMLI) powered by a single DC source. The configuration employs two capacitors, nine switches, and one diode to generate nine distinct output voltage levels. It achieves an inherent voltage-boosting capability of up to four times the input voltage. The switched-CSMLI represents an enhanced topology that utilises a strategic switching scheme to guarantee adequate capacitor charging and natural voltage balancing. The circuit adopts a novel charging approach that increases the number of charging states, thereby maintaining sufficient stored charge across the capacitors. An extended version of the basic CSMLI structure is also introduced to further increase the number of discrete output voltage levels. The proposed topology is evaluated against other comparable state-of-the-art inverters to demonstrate its advantages and effectiveness. The base configuration delivers improved harmonic performance and requires relatively small passive LC (inductor-capacitor) filters for harmonic mitigation. Simulation studies are conducted using the Power simulation (PSIM) platform, and a hardware prototype is developed to experimentally verify the performance and validate the proposed design.

References

Abdel-Rahim, O. and Wang, H. (2020). Five-Level One-Capacitor Boost Multilevel Inverter. IET Power Electronics, 13(11), pp. 2245–2251. doi: 10.1049/iet-pel.2020.0033
Open DOI Search in Google Scholar Back to article
Anand, V., Singh, V., Guo, X., Sathik, M.A.J., Siwakoti, Y.P., Mekhilef, S. and Blaabjerg, F. (2023a). Seventeen Level Switched Capacitor Inverters With the Capability of High Voltage Gain and Low Inrush Current. IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 4(4), pp. 1138–1150. doi: 10.1109/JESTIE.2023.3291996
Open DOI Search in Google Scholar Back to article
Anand, V., Singh, V., Sathik, J. and Almakhles, D. (2023b). Single-Stage Five-Level Common Ground Transformerless Inverter With Extendable Structure for Centralized Photovoltaics. CSEE Journal of Power and Energy Systems, 9(1), pp. 37–49. doi: 10.17775/CSEEJPES.2022.02700
Open DOI Search in Google Scholar Back to article
Azimi, E., Khodaparast, A., Rostami, M.J., Adabi, J., Adabi, M.E., Rezanejad, M., MG Rodrigues, E. and Pouresmaeil, E. (2020). X-Type Step-Up Multi-Level Inverter with Reduced Component Count Based on Switched-Capacitor Concept. Electronics, 9(12), p. 1987. doi: 10.3390/electronics9121987
Open DOI Search in Google Scholar Back to article
Barzegarkhoo, R., Lee, S. S., Khan, S. A., Siwakoti, Y. and Lu, D. D.-C. (2021). A Novel Generalized Common-Ground Switched-Capacitor Multilevel Inverter Suitable for Transformer-Less Grid-Connected Applications. IEEE Transactions on Power Electronics, 36(9), pp. 10293–10306. doi: 10.1109/TPEL.2021.3067347
Open DOI Search in Google Scholar Back to article
Ben Smida, M. and Ben Ammar, F. (2010). Modeling and DBC-PSC-PWM Control of a Three-Phase Flying-Capacitor Stacked Multilevel Voltage Source Inverter. IEEE Transactions on Industrial Electronics, 57(7), pp. 2231–2239. doi: 10.1109/TIE.2009.2030764
Open DOI Search in Google Scholar Back to article
Hassan, A., Yang, X., Chen, W. and Ali, A. I. M. (2023). An Advanced Switched-Capacitor Multilevel Inverter Topology With a Robust PWM Controlling Technique and Voltage Boosting Property for Grid-Connected Renewable Energy Applications. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(3), pp. 3547–3561. doi: 10.1109/JESTPE.2022.3229265
Open DOI Search in Google Scholar Back to article
Hosseinpour, M., Noori, M. and Shahparasti, M. (2024). A 17-Level Octuple Boost Switched-Capacitor Inverter With Lower Voltage Stress on Devices. Scientific Reports, 14, p. 14411. doi: 10.1038/s41598-024-65211-0
Open DOI Search in Google Scholar Back to article
Hosseinzadeh, M. A., Sarebanzadeh, M., Garcia, C. F., Babaei, E. and Rodriguez, J. (2022). An Asymmetric Switched-Capacitor Multicell Inverter With Low Number of DC Source and Voltage Stress For Renewable Energy Sources. IEEE Access, 10, pp. 30513–30525. doi: 10.1109/ACCESS.2022.3140786
Open DOI Search in Google Scholar Back to article
Iqbal, A., Siddique, M. D., Reddy, B. P. and Khan, I. (2021a). A high gain 9L switched-capacitor boost inverter with reduced component count. In: Proceedings of the IEEE Texas Power and Energy Conference (TPEC), pp. 1–6. doi: 10.1109/TPEC51183.2021.9384955
Open DOI Search in Google Scholar Back to article
Iqbal, A., Siddique, M. D., Reddy, B. P. and Maroti, P. K. (2021b). Quadruple Boost Multilevel Inverter Topology With Reduced Switch Count. IEEE Transactions on Power Electronics, 36(7), pp. 7372–7377. doi: 10.1109/TPEL.2020.3044628
Open DOI Search in Google Scholar Back to article
Kar, P., Bagarty, D. P., Ray, P. K. and Mohanty, A. (2023a). A novel reduced component sensor based switched capacitor multilevel inverter. In: Proceedings of the IEEE 3rd International Conference on Smart Technologies for Power, Energy and Control (STPEC), pp. 1–6 10.1109/STPEC59436.2023.10431151
Open DOI Search in Google Scholar Back to article
Kar, P., Bagarty, D. P., Ray, P. K. and Mohanty, A. (2023b). Design of a reduced component transformer based multilevel inverter. In: Proceedings of the IEEE 3rd International Conference on Smart Technologies for Power, Energy and Control (STPEC), pp. 1–6. 10.1109/STPEC59436.2023.10431153
Open DOI Search in Google Scholar Back to article
Kar, P., Sarangi, R.R., Bagarty, D.P., Ray, P.K., Mohanty, A., Soudagar, M.E.M., Fouad, Y. and Shelare, S. (2024). A Novel Reduced Component High Boost Multilevel Inverter. IEEE Access, 12, pp. 124658–124680. doi: 10.1109/ACCESS.2024.3450720
Open DOI Search in Google Scholar Back to article
Kouro, S., Malinowski, M., Gopakumar, K., Pou, J., Franquelo, L.G., Wu, B., Rodriguez, J., Pérez, M.A. and Leon, J.I. (2010). Recent Advances and Industrial Applications of Multilevel Converters. IEEE Transactions on Industrial Electronics, 57(8), pp. 2553–2580. doi: 10.1109/TIE.2010.2049719
Open DOI Search in Google Scholar Back to article
Kumari, M., Siddique, M. D., Sarwar, A., Mekhilef, S. and Tariq, M. (2021). A Twice Boost Nine-Level Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing Capability. International Journal of Circuit Theory and Applications, 49(8), pp. 2578–2592. doi: 10.1002/cta.3014
Open DOI Search in Google Scholar Back to article
Nabae, A., Takahashi, I. and Akagi, H. (1981). A New Neutral-Point-Clamped PWM Inverter. IEEE Transactions on Industry Applications, IA-17(5), pp. 518–523. doi: 10.1109/TIA.1981.4503992
Open DOI Search in Google Scholar Back to article
Niu, D., Gao, F., Wang, P., Zhou, K., Qin, F. and Ma, Z. (2020). A Nine-Level T-Type Packed U-Cell Inverter. IEEE Transactions on Power Electronics, 35(2), pp. 1171–1175. doi: 10.1109/TPEL.2019.2931523
Open DOI Search in Google Scholar Back to article
Panda, K. P., Babu, N. P., Bisoyi, S. K. and Panda, G. (2021). Reduced switch quadruple boost switched-capacitor based multilevel inverter. In: Proceedings of the 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies, pp. 1–6. doi: 10.1109/ICEPE50861.2021.9404408
Open DOI Search in Google Scholar Back to article
Panda, K. P., Naayagi, R. T., Ray, P. K. and Panda, G. (2023). Single-Source Switched-Capacitor Boost Nine-Level Inverter With Reduced Components. CSEE Journal of Power and Energy Systems, 9(5), pp. 1688–1697. doi: 10.17775/CSEEJPES.2022.06520
Open DOI Search in Google Scholar Back to article
Raman, S. R., Fong, Y. C., Ye, Y. and Cheng, K. W. E. (2019). Family of Multiport Switched-Capacitor Multilevel Inverters for High-Frequency AC Power Distribution. IEEE Transactions on Power Electronics, 34(5), pp. 4407–4422. doi: 10.1109/TPEL.2018.2859030
Open DOI Search in Google Scholar Back to article
Rodriguez, J., Franquelo, L.G., Kouro, S., Leon, J.I., Portillo, R.C., Prats, M.A.M. and Perez, M.A. (2009). Multilevel Converters: An Enabling Technology for High-Power Applications. Proceedings of the IEEE, 97(11), pp. 1786–1817. doi: 10.1109/JPROC.2009.2030235
Open DOI Search in Google Scholar Back to article
Roy, T., Tesfay, M. W., Nayak, B. and Panigrahi, C. K. (2021). A 7-Level Switched Capacitor Multilevel Inverter With Reduced Switches and Voltage Stresses. IEEE Transactions on Circuits and Systems II: Express Briefs, 68(12), pp. 3587–3591. 10.1109/TCSII.2021.3075253
Open DOI Search in Google Scholar Back to article
Saif, B., Sarwar, A., Ahmad, S., Lu, S. D. and Liu, H. D. (2025). A Single-Phase Seven-Level Switched Capacitor With Common Ground Inverter and Improved Phase-Shift Modulation Technique. Scientific Reports, 15, p. 4209. doi: 10.1038/s41598-025-86180-y
Open DOI Search in Google Scholar Back to article
Sandeep, N. and Yaragatti, U. R. (2018). Operation and Control of a Nine-Level Modified ANPC Inverter Topology With Reduced Part Count For Grid-Connected Applications. IEEE Transactions on Industrial Electronics, 65(6), pp. 4810–4818. doi: 10.1109/TIE.2017.2774723
Open DOI Search in Google Scholar Back to article
Sarwer, Z., Siddique, M. D., Iqbal, A., Sarwar, A., Rahman, K. and Mekhilef, S. (2020). Seven-level switched-capacitor based multilevel inverter with lesser number of power electronic components and reduced voltage stress. In: Proceedings of the IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), pp. 1–6. doi: 10.1109/PEDES48830.2020.9448030
Open DOI Search in Google Scholar Back to article
Sathik, M. J. (2024). A Nine Level ANPC Boost Type Inverter Topology With Reduced Component Stress. IEEE Transactions on Circuits and Systems II: Express Briefs, 71(1), pp. 380–384. doi: 10.1109/TCSII.2023.3305230
Open DOI Search in Google Scholar Back to article
Seifi, A., Hosseini, S. H., Tarafdar Hagh, M. and Hosseinpour, M. (2024). Capacitor Based Topology of Cross-Square-Switched T-Type Multi-Level Inverter. Scientific Reports, 14, p. 3166. doi: 10.1038/s41598-024-53568-1
Open DOI Search in Google Scholar Back to article
Siddique, M. D., Husain, M. A., Iqbal, A., Mekhilef, S. and Riyaz, A. (2023). Single-Phase 9l Switched-Capacitor Boost Multilevel Inverter (9l-Sc-Bmli) Topology. IEEE Transactions on Industry Applications, 59(1), pp. 994–1001. doi: 10.1109/TIA.2022.3208893
Open DOI Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.2478/pead-2026-0009 | Journal eISSN: 2543-4292 | Journal ISSN: 2451-0262

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Language: English

Page range: 142 - 156

Submitted on: Jan 3, 2026

Accepted on: Mar 8, 2026

Published on: Apr 17, 2026

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

capacitor switched,

high-boost,

multilevel inverter,

sinusoidal pulse width modulation,

total harmonic distortion

Related subjects:

Computer sciences,

Artificial intelligence,

Engineering,

Electrical engineering,

Electronics

© 2026 Pratik Kar, Durgesh Prasad Bagarty, Prakash Kumar Ray, Rachita Ruchismita Sarangi, Asit Mohanty, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 11 (2026): Issue 1 (January 2026)