Transformerless Photovoltaic Inverters Connected to the Grid
| Autor: | U. Borup, Tamas Kerekes, Remus Teodorescu |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Aalborg University Kerekes, T, Teodorescu, R & Borup, U 2007, Transformerless Photovoltaic Inverters Connected to the Grid . in Applied Power Electronics Conference, APEC 2007-Twenty Second Annual IEEE Publication . IEEE, pp. 1733-1737, Applied Power Electronics Conference, APEC 2007, Anaheim, CA, United States, 25/02/2007 . https://doi.org/10.1109/APEX.2007.357753 Teodorescu, R & Borup, U 2007, Transformerless Photovoltaic Inverters Connected to Grid . in Ikke angivet : Applied Power Electronics Conference, APEC 2007-Twenty Second Annual IEEE . Electrical Engineering/Electronics, Computer, Communications and Information Technology Association, pp. 1733-1737, Applied Power Electronics Conference, APEC 2007-Twenty Second Annual IEEE, Anaheim, Ca., United States, 25/02/2007 . https://doi.org/10.1109/APEX.2007.357753 Kerekes, T, Teodorescu, R & Borup, U 2007, Transformerless Photovoltaic Inverters Connected to the Grid . in Applied Power Electronics Conference, APEC 2007-Twenty Second Annual IEEE Publication . IEEE, pp. 1733-1737, Applied Power Electronics Conference, APEC 2007, Anaheim, CA, United States, 25/02/2007 . |
| ISSN: | 1048-2334 |
| DOI: | 10.1109/apex.2007.357753 |
| Popis: | Renewable energy sources are getting more and more widespread, mainly due to the fact that they generate energy by keeping the environment clean. Most of these systems have an isolation transformer included, which if excluded from the system would increase the efficiency and decrease the size of PV installations, furthermore it would lead to a lower cost for the whole investment. But there are some safety issues regarding the missing galvanic isolation. This paper is aiming to analyze and compare the most common single-stage transformerless PV inverter topologies for single-phase and three-phase with respect to the leakage current generation. The best results, both for single-phase and three-phase systems, are obtained when the middle point of the input capacitors is connected to the neutral point, thereby minimizing the voltage fluctuations present at the terminals of the PV panel. Renewable energy sources are getting more and more widespread, mainly due to the fact that they generate energy by keeping the environment clean. Most of these systems have an isolation transformer included, which if excluded from the system would increase the efficiency and decrease the size of PV installations, furthermore it would lead to a lower cost for the whole investment. But there are some safety issues regarding the missing galvanic isolation. This paper is aiming to analyze and compare the most common single-stage transformerless PV inverter topologies for single-phase and three-phase with respect to the leakage current generation. The best results, both for single-phase and three-phase systems, are obtained when the middle point of the input capacitors is connected to the neutral point, thereby minimizing the voltage fluctuations present at the terminals of the PV panel. |
| Databáze: | OpenAIRE |
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