Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems
In some photovoltaic (PV) applications, it is possible to remove the transformer of a system in order to reduce losses, cost, and size. In transformerless systems, the PV module parasitic capacitance can introduce leakage currents in which the amplitude depends on the converter topology, on the puls...
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| Veröffentlicht in: | IEEE transactions on industrial electronics (1982) 2010-04, Vol.57 (4), p.1360-1368 |
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| container_title | IEEE transactions on industrial electronics (1982) |
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| creator | Cavalcanti, M.C. de Oliveira, K.C. de Farias, A.M. Neves, F.A.S. Azevedo, G.M.S. Camboim, F.C. |
| description | In some photovoltaic (PV) applications, it is possible to remove the transformer of a system in order to reduce losses, cost, and size. In transformerless systems, the PV module parasitic capacitance can introduce leakage currents in which the amplitude depends on the converter topology, on the pulsewidth modulation, and on the resonant circuit comprised by the system components. Based on the common-mode voltage model, modulation techniques are proposed to eliminate the leakage current in transformerless PV systems without requiring any modification on the converter and any additional hardware. The main drawback is that the proposed modulation technique for two-level inverters can only be used with 650-V dc link in the case of a 110-V (rms) grid phase voltage. Comparisons among the modulation techniques are discussed, and it is proven that the proposed modulation for two- and three-level inverters presents the best results. To validate the models used in the simulations, an experimental three-phase inverter is used. |
| doi_str_mv | 10.1109/TIE.2009.2029511 |
| format | Article |
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In transformerless systems, the PV module parasitic capacitance can introduce leakage currents in which the amplitude depends on the converter topology, on the pulsewidth modulation, and on the resonant circuit comprised by the system components. Based on the common-mode voltage model, modulation techniques are proposed to eliminate the leakage current in transformerless PV systems without requiring any modification on the converter and any additional hardware. The main drawback is that the proposed modulation technique for two-level inverters can only be used with 650-V dc link in the case of a 110-V (rms) grid phase voltage. Comparisons among the modulation techniques are discussed, and it is proven that the proposed modulation for two- and three-level inverters presents the best results. To validate the models used in the simulations, an experimental three-phase inverter is used.</description><identifier>ISSN: 0278-0046</identifier><identifier>EISSN: 1557-9948</identifier><identifier>DOI: 10.1109/TIE.2009.2029511</identifier><identifier>CODEN: ITIED6</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Circuit topology ; Converters ; Costs ; Electric potential ; Energy conversion ; Inverters ; Leakage current ; Modulation ; Parasitic capacitance ; photovoltaic (PV) power systems ; Photovoltaic cells ; Photovoltaic systems ; Pulse circuits ; Pulse transformers ; Pulse width modulation converters ; pulsewidth-modulated power converters ; Real time ; Solar cells ; Solar power generation ; Voltage</subject><ispartof>IEEE transactions on industrial electronics (1982), 2010-04, Vol.57 (4), p.1360-1368</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Apr 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c323t-3fe46cb4f0166959848ad82608817fd2baab6392672d2c06897b5bbefd13518d3</citedby><cites>FETCH-LOGICAL-c323t-3fe46cb4f0166959848ad82608817fd2baab6392672d2c06897b5bbefd13518d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/5208302$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>315,782,786,798,27933,27934,54767</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/5208302$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Cavalcanti, M.C.</creatorcontrib><creatorcontrib>de Oliveira, K.C.</creatorcontrib><creatorcontrib>de Farias, A.M.</creatorcontrib><creatorcontrib>Neves, F.A.S.</creatorcontrib><creatorcontrib>Azevedo, G.M.S.</creatorcontrib><creatorcontrib>Camboim, F.C.</creatorcontrib><title>Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems</title><title>IEEE transactions on industrial electronics (1982)</title><addtitle>TIE</addtitle><description>In some photovoltaic (PV) applications, it is possible to remove the transformer of a system in order to reduce losses, cost, and size. In transformerless systems, the PV module parasitic capacitance can introduce leakage currents in which the amplitude depends on the converter topology, on the pulsewidth modulation, and on the resonant circuit comprised by the system components. Based on the common-mode voltage model, modulation techniques are proposed to eliminate the leakage current in transformerless PV systems without requiring any modification on the converter and any additional hardware. The main drawback is that the proposed modulation technique for two-level inverters can only be used with 650-V dc link in the case of a 110-V (rms) grid phase voltage. Comparisons among the modulation techniques are discussed, and it is proven that the proposed modulation for two- and three-level inverters presents the best results. To validate the models used in the simulations, an experimental three-phase inverter is used.</description><subject>Circuit topology</subject><subject>Converters</subject><subject>Costs</subject><subject>Electric potential</subject><subject>Energy conversion</subject><subject>Inverters</subject><subject>Leakage current</subject><subject>Modulation</subject><subject>Parasitic capacitance</subject><subject>photovoltaic (PV) power systems</subject><subject>Photovoltaic cells</subject><subject>Photovoltaic systems</subject><subject>Pulse circuits</subject><subject>Pulse transformers</subject><subject>Pulse width modulation converters</subject><subject>pulsewidth-modulated power converters</subject><subject>Real time</subject><subject>Solar cells</subject><subject>Solar power generation</subject><subject>Voltage</subject><issn>0278-0046</issn><issn>1557-9948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkM9LwzAUx4MoOKd3wUvAg6fO_Gia5Chj6mCi4DyXtH110baZSSr435ux4cHLe5fP98t7H4QuKZlRSvTtermYMUJ0GkwLSo_QhAohM61zdYwmhEmVEZIXp-gshA9CaC6omKD3J9eMnYnWDXgN9WawXyMEHB1edLa3g4mAV2A-zTvg-eg9DDFgm1hvhtA634PvIAS83niA7GVjAuCXjYvu23XR2Bq__oQIfThHJ63pAlwc9hS93S_W88ds9fywnN-tspozHjPeQl7UVd4SWhRaaJUr0yhWEKWobBtWGVMVXLNCsobVpFBaVqKqoG0oF1Q1fIpu9r1b73afxLK3oYauMwO4MZRScMkklTSR1__IDzf6IR1X0mQr9RGVJ4rsqdq7EDy05dbb3vifBJU78WUSX-7ElwfxKXK1j1gA-MMFI4oTxn8BxPt_PA</recordid><startdate>201004</startdate><enddate>201004</enddate><creator>Cavalcanti, M.C.</creator><creator>de Oliveira, K.C.</creator><creator>de Farias, A.M.</creator><creator>Neves, F.A.S.</creator><creator>Azevedo, G.M.S.</creator><creator>Camboim, F.C.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>201004</creationdate><title>Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems</title><author>Cavalcanti, M.C. ; de Oliveira, K.C. ; de Farias, A.M. ; Neves, F.A.S. ; Azevedo, G.M.S. ; Camboim, F.C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c323t-3fe46cb4f0166959848ad82608817fd2baab6392672d2c06897b5bbefd13518d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Circuit topology</topic><topic>Converters</topic><topic>Costs</topic><topic>Electric potential</topic><topic>Energy conversion</topic><topic>Inverters</topic><topic>Leakage current</topic><topic>Modulation</topic><topic>Parasitic capacitance</topic><topic>photovoltaic (PV) power systems</topic><topic>Photovoltaic cells</topic><topic>Photovoltaic systems</topic><topic>Pulse circuits</topic><topic>Pulse transformers</topic><topic>Pulse width modulation converters</topic><topic>pulsewidth-modulated power converters</topic><topic>Real time</topic><topic>Solar cells</topic><topic>Solar power generation</topic><topic>Voltage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cavalcanti, M.C.</creatorcontrib><creatorcontrib>de Oliveira, K.C.</creatorcontrib><creatorcontrib>de Farias, A.M.</creatorcontrib><creatorcontrib>Neves, F.A.S.</creatorcontrib><creatorcontrib>Azevedo, G.M.S.</creatorcontrib><creatorcontrib>Camboim, F.C.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on industrial electronics (1982)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Cavalcanti, M.C.</au><au>de Oliveira, K.C.</au><au>de Farias, A.M.</au><au>Neves, F.A.S.</au><au>Azevedo, G.M.S.</au><au>Camboim, F.C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems</atitle><jtitle>IEEE transactions on industrial electronics (1982)</jtitle><stitle>TIE</stitle><date>2010-04</date><risdate>2010</risdate><volume>57</volume><issue>4</issue><spage>1360</spage><epage>1368</epage><pages>1360-1368</pages><issn>0278-0046</issn><eissn>1557-9948</eissn><coden>ITIED6</coden><abstract>In some photovoltaic (PV) applications, it is possible to remove the transformer of a system in order to reduce losses, cost, and size. In transformerless systems, the PV module parasitic capacitance can introduce leakage currents in which the amplitude depends on the converter topology, on the pulsewidth modulation, and on the resonant circuit comprised by the system components. Based on the common-mode voltage model, modulation techniques are proposed to eliminate the leakage current in transformerless PV systems without requiring any modification on the converter and any additional hardware. The main drawback is that the proposed modulation technique for two-level inverters can only be used with 650-V dc link in the case of a 110-V (rms) grid phase voltage. Comparisons among the modulation techniques are discussed, and it is proven that the proposed modulation for two- and three-level inverters presents the best results. To validate the models used in the simulations, an experimental three-phase inverter is used.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIE.2009.2029511</doi><tpages>9</tpages></addata></record> |
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| ispartof | IEEE transactions on industrial electronics (1982), 2010-04, Vol.57 (4), p.1360-1368 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Circuit topology Converters Costs Electric potential Energy conversion Inverters Leakage current Modulation Parasitic capacitance photovoltaic (PV) power systems Photovoltaic cells Photovoltaic systems Pulse circuits Pulse transformers Pulse width modulation converters pulsewidth-modulated power converters Real time Solar cells Solar power generation Voltage |
| title | Modulation Techniques to Eliminate Leakage Currents in Transformerless Three-Phase Photovoltaic Systems |
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