Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter
Transformerless inverters have an important role in the electrical energy market. The high-efficiency and reliable inverter concept is one of the most widely used inverters in single-phase photovoltaic systems because of its high efficiency, low cost, and reduced leakage ground current. However, the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/11/12/1091 |
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| author | Panfilo R. Martinez-Rodriguez Gerardo Vazquez-Guzman Gerardo O. Perez-Bustos Jose M. Sosa-Zuñiga Dalyndha Aztatzi-Pluma Adolfo R. Lopez-Nuñez Christopher J. Rodriguez-Cortes |
| author_facet | Panfilo R. Martinez-Rodriguez Gerardo Vazquez-Guzman Gerardo O. Perez-Bustos Jose M. Sosa-Zuñiga Dalyndha Aztatzi-Pluma Adolfo R. Lopez-Nuñez Christopher J. Rodriguez-Cortes |
| author_sort | Panfilo R. Martinez-Rodriguez |
| collection | DOAJ |
| description | Transformerless inverters have an important role in the electrical energy market. The high-efficiency and reliable inverter concept is one of the most widely used inverters in single-phase photovoltaic systems because of its high efficiency, low cost, and reduced leakage ground current. However, the leakage ground current behavior depends on the power and weather conditions, which can increase the parasitic capacitance value, thus producing an increase in the leakage ground current magnitude. In this paper, it is proposed to add a passive inductive–capacitive output filter to the inverter structure in order to reduce the dependency of the leakage ground current on the system power and weather conditions. The inductive–capacitive output filter is designed in such a way that it can provide a low impedance path for the leakage ground current, different from the ground path. The proposed system was evaluated both through simulations and experimentally in a 1 kW laboratory prototype. |
| first_indexed | 2024-03-08T20:35:05Z |
| format | Article |
| id | doaj.art-a40e5773fe584032ab7c149d8837456a |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-08T20:35:05Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-a40e5773fe584032ab7c149d8837456a2023-12-22T14:22:02ZengMDPI AGMachines2075-17022023-12-011112109110.3390/machines11121091Analysis and Improved Behavior of a Single-Phase Transformerless PV InverterPanfilo R. Martinez-Rodriguez0Gerardo Vazquez-Guzman1Gerardo O. Perez-Bustos2Jose M. Sosa-Zuñiga3Dalyndha Aztatzi-Pluma4Adolfo R. Lopez-Nuñez5Christopher J. Rodriguez-Cortes6School of Sciences, Universidad Autonoma de San Luis Potosi (UASLP), San Luis Potosi 78295, SLP, MexicoLaboratory of Electrical and Power Electronics, Tecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, GTO, MexicoLaboratory of Electrical and Power Electronics, Tecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, GTO, MexicoLaboratory of Electrical and Power Electronics, Tecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, GTO, MexicoDepartment of Mechatronics Engineering, Tecnologico Nacional de Mexico/ITS de Abasolo, Abasolo 36976, GTO, MexicoLaboratory of Electrical and Power Electronics, Tecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, GTO, MexicoSchool of Sciences, Universidad Autonoma de San Luis Potosi (UASLP), San Luis Potosi 78295, SLP, MexicoTransformerless inverters have an important role in the electrical energy market. The high-efficiency and reliable inverter concept is one of the most widely used inverters in single-phase photovoltaic systems because of its high efficiency, low cost, and reduced leakage ground current. However, the leakage ground current behavior depends on the power and weather conditions, which can increase the parasitic capacitance value, thus producing an increase in the leakage ground current magnitude. In this paper, it is proposed to add a passive inductive–capacitive output filter to the inverter structure in order to reduce the dependency of the leakage ground current on the system power and weather conditions. The inductive–capacitive output filter is designed in such a way that it can provide a low impedance path for the leakage ground current, different from the ground path. The proposed system was evaluated both through simulations and experimentally in a 1 kW laboratory prototype.https://www.mdpi.com/2075-1702/11/12/1091HERIC inverterleakage ground currentpassive filterphotovoltaictransformerless |
| spellingShingle | Panfilo R. Martinez-Rodriguez Gerardo Vazquez-Guzman Gerardo O. Perez-Bustos Jose M. Sosa-Zuñiga Dalyndha Aztatzi-Pluma Adolfo R. Lopez-Nuñez Christopher J. Rodriguez-Cortes Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter Machines HERIC inverter leakage ground current passive filter photovoltaic transformerless |
| title | Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter |
| title_full | Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter |
| title_fullStr | Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter |
| title_full_unstemmed | Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter |
| title_short | Analysis and Improved Behavior of a Single-Phase Transformerless PV Inverter |
| title_sort | analysis and improved behavior of a single phase transformerless pv inverter |
| topic | HERIC inverter leakage ground current passive filter photovoltaic transformerless |
| url | https://www.mdpi.com/2075-1702/11/12/1091 |
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