An Improved Multilevel Inverter for Single-Phase Transformerless PV System
A single-phase Three-Level Split-Inductor Neutral Point Clamped Inverter-Improved (3L-SI-NPCI 2 ) for transformerless photovoltaic (PV) application is proposed in this article. The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable...
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| Veröffentlicht in: | IEEE transactions on energy conversion 2021-03, Vol.36 (1), p.281-290 |
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| container_title | IEEE transactions on energy conversion |
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| creator | Faraji, Faramarz Birjandi, Ali Akbar Motie Mousavi G, Sayed Mohammad Zhang, Jianhua Wang, Baocheng Guo, Xiaoqiang |
| description | A single-phase Three-Level Split-Inductor Neutral Point Clamped Inverter-Improved (3L-SI-NPCI 2 ) for transformerless photovoltaic (PV) application is proposed in this article. The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable than conventional converters. Not needing dead time, achieving a high efficiency with lower current THD and low leakage current are other advantages of the proposed inverter. The operation principle, dynamic performance, output filter design and impacts of asymmetric filter inductors on leakage current are illustrated in the 3L-SI-NPCI 2 . The proposed topology is compared to seven existing transformerless topologies by simulation studies and results. Finally, an experimental prototype has been developed to show the benefits of the proposed inverter. |
| doi_str_mv | 10.1109/TEC.2020.3006552 |
| format | Article |
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The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable than conventional converters. Not needing dead time, achieving a high efficiency with lower current THD and low leakage current are other advantages of the proposed inverter. The operation principle, dynamic performance, output filter design and impacts of asymmetric filter inductors on leakage current are illustrated in the 3L-SI-NPCI 2 . The proposed topology is compared to seven existing transformerless topologies by simulation studies and results. Finally, an experimental prototype has been developed to show the benefits of the proposed inverter.</description><identifier>ISSN: 0885-8969</identifier><identifier>EISSN: 1558-0059</identifier><identifier>DOI: 10.1109/TEC.2020.3006552</identifier><identifier>CODEN: ITCNE4</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject><![CDATA[3L-SI-NPCI<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX"> 2</tex-math> </inline-formula> </named-content> ; Converters ; Filter design (mathematics) ; high efficiency ; high reliability ; Inductors ; Inverters ; Leakage current ; multilevel inverter ; Phase transformers ; Phase transitions ; Photovoltaic cells ; Power harmonic filters ; Semiconductor diodes ; Switches ; Topology ; transformerless PV system]]></subject><ispartof>IEEE transactions on energy conversion, 2021-03, Vol.36 (1), p.281-290</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-9b3c6b0df61fb23e3693f0c330f5e5c098f7d7af3ca7d74f0a9bc949456e20953</citedby><cites>FETCH-LOGICAL-c291t-9b3c6b0df61fb23e3693f0c330f5e5c098f7d7af3ca7d74f0a9bc949456e20953</cites><orcidid>0000-0003-2835-3265 ; 0000-0002-8867-5437 ; 0000-0002-9375-448X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9141378$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9141378$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Faraji, Faramarz</creatorcontrib><creatorcontrib>Birjandi, Ali Akbar Motie</creatorcontrib><creatorcontrib>Mousavi G, Sayed Mohammad</creatorcontrib><creatorcontrib>Zhang, Jianhua</creatorcontrib><creatorcontrib>Wang, Baocheng</creatorcontrib><creatorcontrib>Guo, Xiaoqiang</creatorcontrib><title>An Improved Multilevel Inverter for Single-Phase Transformerless PV System</title><title>IEEE transactions on energy conversion</title><addtitle>TEC</addtitle><description>A single-phase Three-Level Split-Inductor Neutral Point Clamped Inverter-Improved (3L-SI-NPCI 2 ) for transformerless photovoltaic (PV) application is proposed in this article. The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable than conventional converters. Not needing dead time, achieving a high efficiency with lower current THD and low leakage current are other advantages of the proposed inverter. The operation principle, dynamic performance, output filter design and impacts of asymmetric filter inductors on leakage current are illustrated in the 3L-SI-NPCI 2 . The proposed topology is compared to seven existing transformerless topologies by simulation studies and results. 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The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable than conventional converters. Not needing dead time, achieving a high efficiency with lower current THD and low leakage current are other advantages of the proposed inverter. The operation principle, dynamic performance, output filter design and impacts of asymmetric filter inductors on leakage current are illustrated in the 3L-SI-NPCI 2 . The proposed topology is compared to seven existing transformerless topologies by simulation studies and results. Finally, an experimental prototype has been developed to show the benefits of the proposed inverter.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TEC.2020.3006552</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-2835-3265</orcidid><orcidid>https://orcid.org/0000-0002-8867-5437</orcidid><orcidid>https://orcid.org/0000-0002-9375-448X</orcidid></addata></record> |
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| subjects | 3L-SI-NPCI<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX"> 2</tex-math> </inline-formula> </named-content> Converters Filter design (mathematics) high efficiency high reliability Inductors Inverters Leakage current multilevel inverter Phase transformers Phase transitions Photovoltaic cells Power harmonic filters Semiconductor diodes Switches Topology transformerless PV system |
| title | An Improved Multilevel Inverter for Single-Phase Transformerless PV System |
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