A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique
Abstract Lately, transformer-less Researchers in the fields of power electronics and renewable energy have taken notice of photovoltaic inverters because of their great efficiency, low cost, and small size. However, higher efficiency typically results in more components, making the inverter costly a...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-86180-y |
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| author | Bisma Saif Adil Sarwar Shafiq Ahmad Shiue-Der Lu Hwa-Dong Liu |
| author_facet | Bisma Saif Adil Sarwar Shafiq Ahmad Shiue-Der Lu Hwa-Dong Liu |
| author_sort | Bisma Saif |
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| description | Abstract Lately, transformer-less Researchers in the fields of power electronics and renewable energy have taken notice of photovoltaic inverters because of their great efficiency, low cost, and small size. However, higher efficiency typically results in more components, making the inverter costly and bulky. This article proposes a single-phase seven-level transformer-less with common ground topology. The proposed topology utilizes 10 switches, 4 capacitors and 1 diode. This article also suggests an improved Phase Shift (PS) Modulation Technique which reduces overall losses. When implemented with improved Phase Shift (PS), the total highest attainable efficiency of the proposed topology is 98.05% at 15 W. The THD% of voltage harmonics is reduced to 15.29% from 17.20% and for current harmonics is reduced to 5.07% from 10.15%. The reliability of the proposed inverter has also been analyzed. The simulation as well as hardware results have been presented to validate the performance of the proposed inverter. |
| format | Article |
| id | doaj-art-049fe7e268374a3089d8f77db7ed4a17 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-049fe7e268374a3089d8f77db7ed4a172025-02-09T12:36:11ZengNature PortfolioScientific Reports2045-23222025-02-0115112110.1038/s41598-025-86180-yA single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation techniqueBisma Saif0Adil Sarwar1Shafiq Ahmad2Shiue-Der Lu3Hwa-Dong Liu4Department of Electrical Engineering, ZHCET, Aligarh Muslim UniversityDepartment of Electrical Engineering, ZHCET, Aligarh Muslim UniversityIndustrial Engineering Department, College of Engineering, King Saud UniversityDepartment of Electrical Engineering, National Chin-Yi University of TechnologyUndergraduate Program of Vehicle and Energy Engineering, National Taiwan Normal UniversityAbstract Lately, transformer-less Researchers in the fields of power electronics and renewable energy have taken notice of photovoltaic inverters because of their great efficiency, low cost, and small size. However, higher efficiency typically results in more components, making the inverter costly and bulky. This article proposes a single-phase seven-level transformer-less with common ground topology. The proposed topology utilizes 10 switches, 4 capacitors and 1 diode. This article also suggests an improved Phase Shift (PS) Modulation Technique which reduces overall losses. When implemented with improved Phase Shift (PS), the total highest attainable efficiency of the proposed topology is 98.05% at 15 W. The THD% of voltage harmonics is reduced to 15.29% from 17.20% and for current harmonics is reduced to 5.07% from 10.15%. The reliability of the proposed inverter has also been analyzed. The simulation as well as hardware results have been presented to validate the performance of the proposed inverter.https://doi.org/10.1038/s41598-025-86180-yMulti-level inverters (MLIs)Mean time to failure (MTTF)Mean time before failure (MTBF)Improved phase shift (IPS)Phase shift (PS)Switched capacitor (SC) |
| spellingShingle | Bisma Saif Adil Sarwar Shafiq Ahmad Shiue-Der Lu Hwa-Dong Liu A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique Scientific Reports Multi-level inverters (MLIs) Mean time to failure (MTTF) Mean time before failure (MTBF) Improved phase shift (IPS) Phase shift (PS) Switched capacitor (SC) |
| title | A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique |
| title_full | A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique |
| title_fullStr | A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique |
| title_full_unstemmed | A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique |
| title_short | A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique |
| title_sort | single phase seven level switched capacitor with common ground inverter and improved phase shift modulation technique |
| topic | Multi-level inverters (MLIs) Mean time to failure (MTTF) Mean time before failure (MTBF) Improved phase shift (IPS) Phase shift (PS) Switched capacitor (SC) |
| url | https://doi.org/10.1038/s41598-025-86180-y |
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