A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system
In this article, the performance of the split-capacitor H-bridge topology as a single-phase transformerless photovoltaic inverter is studied. By connecting the midpoint of its two series DC-link capacitors to the ground, the split-capacitor H-bridge is able to clamp the common-mode voltage of the sy...
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| Format: | Article |
| Language: | English |
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2015
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| Online Access: | http://eprints.um.edu.my/15709/1/A_Highly_Efficient_Single-phase_Transformerless_H-bridge_Inverter_for_Reducing_Leakage.pdf |
| _version_ | 1796946945893203968 |
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| author | Azri, M. Abd Rahim, N. Abd Halim, W. |
| author_facet | Azri, M. Abd Rahim, N. Abd Halim, W. |
| author_sort | Azri, M. |
| collection | UM |
| description | In this article, the performance of the split-capacitor H-bridge topology as a single-phase transformerless photovoltaic inverter is studied. By connecting the midpoint of its two series DC-link capacitors to the ground, the split-capacitor H-bridge is able to clamp the common-mode voltage of the system, effectively suppressing leakage ground current. To overcome the issue of capacitor voltage balancing, a simple balancing circuit and its control are introduced. The operation modes, common-mode voltage, and leakage ground current characteristics of the split-capacitor H-bridge topology are discussed, subsequently validated using both simulation and experimental tests. Comparison with a conventional transformerless H-bridge topology proves the superiority of the split-capacitor H-bridge topology in terms of leakage ground current and efficiency. |
| first_indexed | 2024-03-06T05:39:26Z |
| format | Article |
| id | um.eprints-15709 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:39:26Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | um.eprints-157092016-03-17T01:19:35Z http://eprints.um.edu.my/15709/ A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system Azri, M. Abd Rahim, N. Abd Halim, W. T Technology (General) TA Engineering (General). Civil engineering (General) TK Electrical engineering. Electronics Nuclear engineering In this article, the performance of the split-capacitor H-bridge topology as a single-phase transformerless photovoltaic inverter is studied. By connecting the midpoint of its two series DC-link capacitors to the ground, the split-capacitor H-bridge is able to clamp the common-mode voltage of the system, effectively suppressing leakage ground current. To overcome the issue of capacitor voltage balancing, a simple balancing circuit and its control are introduced. The operation modes, common-mode voltage, and leakage ground current characteristics of the split-capacitor H-bridge topology are discussed, subsequently validated using both simulation and experimental tests. Comparison with a conventional transformerless H-bridge topology proves the superiority of the split-capacitor H-bridge topology in terms of leakage ground current and efficiency. 2015-06-15 Article PeerReviewed application/pdf en http://eprints.um.edu.my/15709/1/A_Highly_Efficient_Single-phase_Transformerless_H-bridge_Inverter_for_Reducing_Leakage.pdf Azri, M. and Abd Rahim, N. and Abd Halim, W. (2015) A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system. Electric Power Components and Systems, 43 (8-10). pp. 928-938. ISSN 1532-5008, DOI https://doi.org/10.1080/15325008.2014.981897 <https://doi.org/10.1080/15325008.2014.981897>. http://www.tandfonline.com/doi/pdf/10.1080/15325008.2014.981897 10.1080/15325008.2014.981897 |
| spellingShingle | T Technology (General) TA Engineering (General). Civil engineering (General) TK Electrical engineering. Electronics Nuclear engineering Azri, M. Abd Rahim, N. Abd Halim, W. A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system |
| title | A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system |
| title_full | A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system |
| title_fullStr | A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system |
| title_full_unstemmed | A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system |
| title_short | A highly efficient single-phase transformerless h-bridge inverter for reducing leakage ground current in photovoltaic grid-connected system |
| title_sort | highly efficient single phase transformerless h bridge inverter for reducing leakage ground current in photovoltaic grid connected system |
| topic | T Technology (General) TA Engineering (General). Civil engineering (General) TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.um.edu.my/15709/1/A_Highly_Efficient_Single-phase_Transformerless_H-bridge_Inverter_for_Reducing_Leakage.pdf |
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