Modeling and analysis of current harmonic distortion from grid connected PV inverters under different operating conditions
•Causes of the current harmonics are summarized.•The harmonic amplitude increases as PV output power level decreases.•Field measurement for current harmonics is carried out at a microgrid.•DC-link voltage ripple cause a series of odd harmonics in the output current.•A time-varying model is proposed...
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| Veröffentlicht in: | Solar energy 2013-08, Vol.94, p.182-194 |
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| creator | Du, Yang Lu, Dylan Dah-Chuan James, Geoffrey Cornforth, David J. |
| description | •Causes of the current harmonics are summarized.•The harmonic amplitude increases as PV output power level decreases.•Field measurement for current harmonics is carried out at a microgrid.•DC-link voltage ripple cause a series of odd harmonics in the output current.•A time-varying model is proposed to reveal the characteristics of the harmonics.
Due to the fast growth of photovoltaic (PV) installations, concerns are rising about the harmonic distortion generated from PV inverters. High current total harmonic distortion (THD) occurs when PV inverters operate under light load conditions due to low solar insolation. A general model modified from the conventional control structure diagram is introduced to analyze the harmonic formation process. Causes of the current harmonics are summarized and its relationship with output power levels is analyzed. The field measurement for current harmonics is carried out at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) microgrid to validate the analysis results. In particular for two-stage inverter, unlike previous papers that assume the DC-link voltage is constant, the DC-link voltage ripple is identified as the source of a series of odd harmonics. A mew periodic time-varying model is proposed by including the DC-link voltage ripple into the conventional current control loop model. This model is able to simulate the characteristics of the harmonic components and show their dependence on the DC-link voltage ripple. |
| doi_str_mv | 10.1016/j.solener.2013.05.010 |
| format | Article |
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Due to the fast growth of photovoltaic (PV) installations, concerns are rising about the harmonic distortion generated from PV inverters. High current total harmonic distortion (THD) occurs when PV inverters operate under light load conditions due to low solar insolation. A general model modified from the conventional control structure diagram is introduced to analyze the harmonic formation process. Causes of the current harmonics are summarized and its relationship with output power levels is analyzed. The field measurement for current harmonics is carried out at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) microgrid to validate the analysis results. In particular for two-stage inverter, unlike previous papers that assume the DC-link voltage is constant, the DC-link voltage ripple is identified as the source of a series of odd harmonics. A mew periodic time-varying model is proposed by including the DC-link voltage ripple into the conventional current control loop model. This model is able to simulate the characteristics of the harmonic components and show their dependence on the DC-link voltage ripple.</description><identifier>ISSN: 0038-092X</identifier><identifier>EISSN: 1471-1257</identifier><identifier>DOI: 10.1016/j.solener.2013.05.010</identifier><identifier>CODEN: SRENA4</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; DC-link voltage ripple ; Direct current networks ; Disturbances. Regulation. Protection ; Electric currents ; Electrical engineering. Electrical power engineering ; Electrical power engineering ; Exact sciences and technology ; Harmonics ; Matlab/Simulink ; Microgrid ; Miscellaneous ; Photovoltaic cells ; Power electronics, power supplies ; Power networks and lines ; PV inverter ; Solar energy</subject><ispartof>Solar energy, 2013-08, Vol.94, p.182-194</ispartof><rights>2013 Elsevier Ltd</rights><rights>2014 INIST-CNRS</rights><rights>Copyright Pergamon Press Inc. Aug 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c433t-2b38d6aa156aa405ae2f68d30ec0e639d84ca3f681c9cf1b043e021542a4a94a3</citedby><cites>FETCH-LOGICAL-c433t-2b38d6aa156aa405ae2f68d30ec0e639d84ca3f681c9cf1b043e021542a4a94a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.solener.2013.05.010$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27584631$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><contributor>Morales-Acevedo, A</contributor><creatorcontrib>Du, Yang</creatorcontrib><creatorcontrib>Lu, Dylan Dah-Chuan</creatorcontrib><creatorcontrib>James, Geoffrey</creatorcontrib><creatorcontrib>Cornforth, David J.</creatorcontrib><title>Modeling and analysis of current harmonic distortion from grid connected PV inverters under different operating conditions</title><title>Solar energy</title><description>•Causes of the current harmonics are summarized.•The harmonic amplitude increases as PV output power level decreases.•Field measurement for current harmonics is carried out at a microgrid.•DC-link voltage ripple cause a series of odd harmonics in the output current.•A time-varying model is proposed to reveal the characteristics of the harmonics.
Due to the fast growth of photovoltaic (PV) installations, concerns are rising about the harmonic distortion generated from PV inverters. High current total harmonic distortion (THD) occurs when PV inverters operate under light load conditions due to low solar insolation. A general model modified from the conventional control structure diagram is introduced to analyze the harmonic formation process. Causes of the current harmonics are summarized and its relationship with output power levels is analyzed. The field measurement for current harmonics is carried out at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) microgrid to validate the analysis results. In particular for two-stage inverter, unlike previous papers that assume the DC-link voltage is constant, the DC-link voltage ripple is identified as the source of a series of odd harmonics. A mew periodic time-varying model is proposed by including the DC-link voltage ripple into the conventional current control loop model. This model is able to simulate the characteristics of the harmonic components and show their dependence on the DC-link voltage ripple.</description><subject>Applied sciences</subject><subject>DC-link voltage ripple</subject><subject>Direct current networks</subject><subject>Disturbances. Regulation. Protection</subject><subject>Electric currents</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>Exact sciences and technology</subject><subject>Harmonics</subject><subject>Matlab/Simulink</subject><subject>Microgrid</subject><subject>Miscellaneous</subject><subject>Photovoltaic cells</subject><subject>Power electronics, power supplies</subject><subject>Power networks and lines</subject><subject>PV inverter</subject><subject>Solar energy</subject><issn>0038-092X</issn><issn>1471-1257</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkUuLFDEUhYOMYE_rTxACIrip8t5KUo-VDMP4gBFdqLgLmeTWmKY66UmqBsZfb8puXLiZRRII3zn3cg5jLxFqBGzf7uocJwqU6gZQ1KBqQHjCNig7rLBR3RnbAIi-gqH5-Yyd57wDwA77bsN-f46OJh9uuQmuHDM9ZJ95HLldUqIw818m7WPwljuf55hmHwMfU9zz2-QdtzEEsjM5_vUH9-Ge0kwp8yU4SkUxjvTXJB4omXkdUwTOryb5OXs6minTi9O7Zd_fX327_Fhdf_nw6fLiurJSiLlqbkTvWmNQlUuCMtSMbe8EkAVqxeB6aY0oX2gHO-INSEHQoJKNkWaQRmzZm6PvIcW7hfKs9z5bmiYTKC5ZowIlFILqH0dlK-UwdCXmLXv1H7qLSyr5rRRiM0CrhkKpI2VTzDnRqA_J70160Ah6LU_v9Kk8vZanQelSXtG9PrmbbM00JhOsz__ETad62Yp1i3dHjkqA9764ZOspWHI-lVq0i_6RSX8A2fa0DA</recordid><startdate>20130801</startdate><enddate>20130801</enddate><creator>Du, Yang</creator><creator>Lu, Dylan Dah-Chuan</creator><creator>James, Geoffrey</creator><creator>Cornforth, David J.</creator><general>Elsevier Ltd</general><general>Elsevier</general><general>Pergamon Press Inc</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20130801</creationdate><title>Modeling and analysis of current harmonic distortion from grid connected PV inverters under different operating conditions</title><author>Du, Yang ; Lu, Dylan Dah-Chuan ; James, Geoffrey ; Cornforth, David J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c433t-2b38d6aa156aa405ae2f68d30ec0e639d84ca3f681c9cf1b043e021542a4a94a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Applied sciences</topic><topic>DC-link voltage ripple</topic><topic>Direct current networks</topic><topic>Disturbances. Regulation. Protection</topic><topic>Electric currents</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>Exact sciences and technology</topic><topic>Harmonics</topic><topic>Matlab/Simulink</topic><topic>Microgrid</topic><topic>Miscellaneous</topic><topic>Photovoltaic cells</topic><topic>Power electronics, power supplies</topic><topic>Power networks and lines</topic><topic>PV inverter</topic><topic>Solar energy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Du, Yang</creatorcontrib><creatorcontrib>Lu, Dylan Dah-Chuan</creatorcontrib><creatorcontrib>James, Geoffrey</creatorcontrib><creatorcontrib>Cornforth, David J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Solar energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Du, Yang</au><au>Lu, Dylan Dah-Chuan</au><au>James, Geoffrey</au><au>Cornforth, David J.</au><au>Morales-Acevedo, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modeling and analysis of current harmonic distortion from grid connected PV inverters under different operating conditions</atitle><jtitle>Solar energy</jtitle><date>2013-08-01</date><risdate>2013</risdate><volume>94</volume><spage>182</spage><epage>194</epage><pages>182-194</pages><issn>0038-092X</issn><eissn>1471-1257</eissn><coden>SRENA4</coden><abstract>•Causes of the current harmonics are summarized.•The harmonic amplitude increases as PV output power level decreases.•Field measurement for current harmonics is carried out at a microgrid.•DC-link voltage ripple cause a series of odd harmonics in the output current.•A time-varying model is proposed to reveal the characteristics of the harmonics.
Due to the fast growth of photovoltaic (PV) installations, concerns are rising about the harmonic distortion generated from PV inverters. High current total harmonic distortion (THD) occurs when PV inverters operate under light load conditions due to low solar insolation. A general model modified from the conventional control structure diagram is introduced to analyze the harmonic formation process. Causes of the current harmonics are summarized and its relationship with output power levels is analyzed. The field measurement for current harmonics is carried out at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) microgrid to validate the analysis results. In particular for two-stage inverter, unlike previous papers that assume the DC-link voltage is constant, the DC-link voltage ripple is identified as the source of a series of odd harmonics. A mew periodic time-varying model is proposed by including the DC-link voltage ripple into the conventional current control loop model. This model is able to simulate the characteristics of the harmonic components and show their dependence on the DC-link voltage ripple.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.solener.2013.05.010</doi><tpages>13</tpages></addata></record> |
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| subjects | Applied sciences DC-link voltage ripple Direct current networks Disturbances. Regulation. Protection Electric currents Electrical engineering. Electrical power engineering Electrical power engineering Exact sciences and technology Harmonics Matlab/Simulink Microgrid Miscellaneous Photovoltaic cells Power electronics, power supplies Power networks and lines PV inverter Solar energy |
| title | Modeling and analysis of current harmonic distortion from grid connected PV inverters under different operating conditions |
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