A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter
This article presents a new transformerless switched-capacitor (SC) based five-level grid-connected inverter with inherent voltage-boosting capability. The proposed topology achieves a voltage gain factor of two without requiring an additional dc–dc boost converter or transformer, resulti...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
|
| Series: | IEEE Open Journal of the Industrial Electronics Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/11086518/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849736604311093248 |
|---|---|
| author | Milad Ghavipanjeh Marangalu Naser Vosoughi Kurdkandi Kourosh Khalaj Monfared Yousef Neyshabouri Hani Vahedi |
| author_facet | Milad Ghavipanjeh Marangalu Naser Vosoughi Kurdkandi Kourosh Khalaj Monfared Yousef Neyshabouri Hani Vahedi |
| author_sort | Milad Ghavipanjeh Marangalu |
| collection | DOAJ |
| description | This article presents a new transformerless switched-capacitor (SC) based five-level grid-connected inverter with inherent voltage-boosting capability. The proposed topology achieves a voltage gain factor of two without requiring an additional dc–dc boost converter or transformer, resulting in a more compact, cost-effective, and efficient design. A single SC cell is utilized to perform bidirectional capacitor charging during both positive and negative grid half cycles, thereby improving energy transfer efficiency and significantly reducing capacitor size and volume compared with the conventional topologies. The inverter employs a minimal number of components—only nine switches and one flying capacitor—while maintaining high performance. Only five switches operate at high frequency, which reduces switching losses, gate driver complexity, and electromagnetic interference. A straightforward control strategy ensures that the inverter delivers a high-quality sinusoidal current waveform to the grid and supports both active and reactive-power flow under various power factor conditions. The reliability of the proposed inverter is analyzed, and its performance is validated through detailed simulations and experimental results. A comparative study with the existing solutions highlights the advantages of the proposed topology in terms of efficiency, voltage gain, component count, and waveform quality. |
| format | Article |
| id | doaj-art-736ce1d93dba4afa809f384e3ec6eaa6 |
| institution | DOAJ |
| issn | 2644-1284 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Industrial Electronics Society |
| spelling | doaj-art-736ce1d93dba4afa809f384e3ec6eaa62025-08-20T03:07:13ZengIEEEIEEE Open Journal of the Industrial Electronics Society2644-12842025-01-0161188120910.1109/OJIES.2025.359077711086518A New Reliable Switched-Capacitor-Based High Step-Up Five-Level InverterMilad Ghavipanjeh Marangalu0https://orcid.org/0000-0003-3954-7989Naser Vosoughi Kurdkandi1https://orcid.org/0000-0001-7097-0748Kourosh Khalaj Monfared2https://orcid.org/0000-0002-9863-871XYousef Neyshabouri3https://orcid.org/0000-0002-8102-6688Hani Vahedi4https://orcid.org/0000-0001-6309-2633Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, IranFaculty of Electrical and Computer Engineering, San Diego State University, San Diego, CA, USASchool of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, IranSchool of Electrical and Computer Engineering, Urmia University, Urmia, IranDelft University of Technology, Delft, The NetherlandsThis article presents a new transformerless switched-capacitor (SC) based five-level grid-connected inverter with inherent voltage-boosting capability. The proposed topology achieves a voltage gain factor of two without requiring an additional dc–dc boost converter or transformer, resulting in a more compact, cost-effective, and efficient design. A single SC cell is utilized to perform bidirectional capacitor charging during both positive and negative grid half cycles, thereby improving energy transfer efficiency and significantly reducing capacitor size and volume compared with the conventional topologies. The inverter employs a minimal number of components—only nine switches and one flying capacitor—while maintaining high performance. Only five switches operate at high frequency, which reduces switching losses, gate driver complexity, and electromagnetic interference. A straightforward control strategy ensures that the inverter delivers a high-quality sinusoidal current waveform to the grid and supports both active and reactive-power flow under various power factor conditions. The reliability of the proposed inverter is analyzed, and its performance is validated through detailed simulations and experimental results. A comparative study with the existing solutions highlights the advantages of the proposed topology in terms of efficiency, voltage gain, component count, and waveform quality.https://ieeexplore.ieee.org/document/11086518/Grid-connectedreliabilitysingle-stage inverterswitched-capacitor (SC) based invertertransformerless invertervoltage-boosting feature |
| spellingShingle | Milad Ghavipanjeh Marangalu Naser Vosoughi Kurdkandi Kourosh Khalaj Monfared Yousef Neyshabouri Hani Vahedi A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter IEEE Open Journal of the Industrial Electronics Society Grid-connected reliability single-stage inverter switched-capacitor (SC) based inverter transformerless inverter voltage-boosting feature |
| title | A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter |
| title_full | A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter |
| title_fullStr | A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter |
| title_full_unstemmed | A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter |
| title_short | A New Reliable Switched-Capacitor-Based High Step-Up Five-Level Inverter |
| title_sort | new reliable switched capacitor based high step up five level inverter |
| topic | Grid-connected reliability single-stage inverter switched-capacitor (SC) based inverter transformerless inverter voltage-boosting feature |
| url | https://ieeexplore.ieee.org/document/11086518/ |
| work_keys_str_mv | AT miladghavipanjehmarangalu anewreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT naservosoughikurdkandi anewreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT kouroshkhalajmonfared anewreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT yousefneyshabouri anewreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT hanivahedi anewreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT miladghavipanjehmarangalu newreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT naservosoughikurdkandi newreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT kouroshkhalajmonfared newreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT yousefneyshabouri newreliableswitchedcapacitorbasedhighstepupfivelevelinverter AT hanivahedi newreliableswitchedcapacitorbasedhighstepupfivelevelinverter |