Front-End Isolated Quasi-Z-Source DC–DC Converter Modules in Series for High-Power Photovoltaic Systems—Part I: Configuration, Operation, and Evaluation
A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for dc integration of high-power photovoltaic (PV) systems. The qZS-MCC comprises series-connected front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs). With the front-end isolation, the qZS-MCC achieves high-volta...
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| Veröffentlicht in: | IEEE transactions on industrial electronics (1982) 2017-01, Vol.64 (1), p.347-358 |
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| creator | Liu, Yushan Abu-Rub, Haitham Ge, Baoming |
| description | A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for dc integration of high-power photovoltaic (PV) systems. The qZS-MCC comprises series-connected front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs). With the front-end isolation, the qZS-MCC achieves high-voltage dc capability, while maintaining modularity and PV panel grounded. The post-stage qZS-HB handles the PV voltage and power flows, dc-link voltage balance, and output-series power integration. Whereas, the front-end isolation converters of all SMs perform a constant duty cycle, lowing the control complexity. There is no double-line-frequency power flowing through the dc-side PV panels, qZS inductors, and qZS capacitors in the qZS-MCC, so small qZS impedance is possible compared to the existing qZS cascaded multilevel inverter. The configuration, operating principle, power loss evaluation, and passive components design of the proposed system are investigated in this part of the paper. The system control, modeling, and corresponding verifications are stated in Part II of this paper. |
| doi_str_mv | 10.1109/TIE.2016.2598673 |
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The qZS-MCC comprises series-connected front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs). With the front-end isolation, the qZS-MCC achieves high-voltage dc capability, while maintaining modularity and PV panel grounded. The post-stage qZS-HB handles the PV voltage and power flows, dc-link voltage balance, and output-series power integration. Whereas, the front-end isolation converters of all SMs perform a constant duty cycle, lowing the control complexity. There is no double-line-frequency power flowing through the dc-side PV panels, qZS inductors, and qZS capacitors in the qZS-MCC, so small qZS impedance is possible compared to the existing qZS cascaded multilevel inverter. The configuration, operating principle, power loss evaluation, and passive components design of the proposed system are investigated in this part of the paper. The system control, modeling, and corresponding verifications are stated in Part II of this paper.</description><identifier>ISSN: 0278-0046</identifier><identifier>EISSN: 1557-9948</identifier><identifier>DOI: 10.1109/TIE.2016.2598673</identifier><identifier>CODEN: ITIED6</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Capacitors ; Configurations ; DC-DC power converters ; DC–DC power conversion ; Electric bridges ; galvanic isolation ; Impedance ; Inductors ; Inverters ; Modularity ; Passive components ; Photovoltaic cells ; photovoltaic power system ; Power flow ; Power systems ; quasi-Z-source converter ; Voltage control ; Voltage converters (DC to DC)</subject><ispartof>IEEE transactions on industrial electronics (1982), 2017-01, Vol.64 (1), p.347-358</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c338t-d4019340cb7c5a0c3ee57a3f101c89b12c392cc9dc079b36f8f4ab183805e2013</citedby><cites>FETCH-LOGICAL-c338t-d4019340cb7c5a0c3ee57a3f101c89b12c392cc9dc079b36f8f4ab183805e2013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7539365$$EHTML$$P50$$Gieee$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids></links><search><creatorcontrib>Liu, Yushan</creatorcontrib><creatorcontrib>Abu-Rub, Haitham</creatorcontrib><creatorcontrib>Ge, Baoming</creatorcontrib><title>Front-End Isolated Quasi-Z-Source DC–DC Converter Modules in Series for High-Power Photovoltaic Systems—Part I: Configuration, Operation, and Evaluation</title><title>IEEE transactions on industrial electronics (1982)</title><addtitle>TIE</addtitle><description>A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for dc integration of high-power photovoltaic (PV) systems. The qZS-MCC comprises series-connected front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs). With the front-end isolation, the qZS-MCC achieves high-voltage dc capability, while maintaining modularity and PV panel grounded. The post-stage qZS-HB handles the PV voltage and power flows, dc-link voltage balance, and output-series power integration. Whereas, the front-end isolation converters of all SMs perform a constant duty cycle, lowing the control complexity. There is no double-line-frequency power flowing through the dc-side PV panels, qZS inductors, and qZS capacitors in the qZS-MCC, so small qZS impedance is possible compared to the existing qZS cascaded multilevel inverter. The configuration, operating principle, power loss evaluation, and passive components design of the proposed system are investigated in this part of the paper. The system control, modeling, and corresponding verifications are stated in Part II of this paper.</description><subject>Capacitors</subject><subject>Configurations</subject><subject>DC-DC power converters</subject><subject>DC–DC power conversion</subject><subject>Electric bridges</subject><subject>galvanic isolation</subject><subject>Impedance</subject><subject>Inductors</subject><subject>Inverters</subject><subject>Modularity</subject><subject>Passive components</subject><subject>Photovoltaic cells</subject><subject>photovoltaic power system</subject><subject>Power flow</subject><subject>Power systems</subject><subject>quasi-Z-source converter</subject><subject>Voltage control</subject><subject>Voltage converters (DC to DC)</subject><issn>0278-0046</issn><issn>1557-9948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>ESBDL</sourceid><sourceid>RIE</sourceid><recordid>eNo9UU1PGzEUtKoiNYXekXqx1CsO9nq9a_dWLQEigRIUeuGycrxvwWhZB9sbxI3_0B75dfkldRrg9OZJM-9jBqFDRseMUXV8PZ2MM8qKcSaULEr-CY2YECVRKpef0YhmpSSU5sUX9DWEe0pZLpgYoddT7_pIJn2Dp8F1OkKDrwYdLLkhCzd4A_ik2rz8Oalw5fo1-AgeX7pm6CBg2-MFeJtQ6zw-t7d3ZO6eEmF-56Jbuy5qa_DiOUR4CJuXv3PtI57-3E5q7e3gdbSuP8KzFbxDne6YrHU3_O8P0F6ruwDf3uo--n06ua7OycXsbFr9uiCGcxlJk1OmeE7NsjRCU8MBRKl5yygzUi1ZZrjKjFGNoaVa8qKVba6XTHJJBSTP-D76sZu78u5xgBDr-_R6n1bWTOYyK5NxWWLRHct4F4KHtl55-6D9c81ovc2gThnU2wzqtwyS5PtOYgHgg14Krngh-D_c9oVE</recordid><startdate>201701</startdate><enddate>201701</enddate><creator>Liu, Yushan</creator><creator>Abu-Rub, Haitham</creator><creator>Ge, Baoming</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>ESBDL</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>201701</creationdate><title>Front-End Isolated Quasi-Z-Source DC–DC Converter Modules in Series for High-Power Photovoltaic Systems—Part I: Configuration, Operation, and Evaluation</title><author>Liu, Yushan ; Abu-Rub, Haitham ; Ge, Baoming</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c338t-d4019340cb7c5a0c3ee57a3f101c89b12c392cc9dc079b36f8f4ab183805e2013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Capacitors</topic><topic>Configurations</topic><topic>DC-DC power converters</topic><topic>DC–DC power conversion</topic><topic>Electric bridges</topic><topic>galvanic isolation</topic><topic>Impedance</topic><topic>Inductors</topic><topic>Inverters</topic><topic>Modularity</topic><topic>Passive components</topic><topic>Photovoltaic cells</topic><topic>photovoltaic power system</topic><topic>Power flow</topic><topic>Power systems</topic><topic>quasi-Z-source converter</topic><topic>Voltage control</topic><topic>Voltage converters (DC to DC)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Yushan</creatorcontrib><creatorcontrib>Abu-Rub, Haitham</creatorcontrib><creatorcontrib>Ge, Baoming</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE Open Access Journals</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><jtitle>IEEE transactions on industrial electronics (1982)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Yushan</au><au>Abu-Rub, Haitham</au><au>Ge, Baoming</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Front-End Isolated Quasi-Z-Source DC–DC Converter Modules in Series for High-Power Photovoltaic Systems—Part I: Configuration, Operation, and Evaluation</atitle><jtitle>IEEE transactions on industrial electronics (1982)</jtitle><stitle>TIE</stitle><date>2017-01</date><risdate>2017</risdate><volume>64</volume><issue>1</issue><spage>347</spage><epage>358</epage><pages>347-358</pages><issn>0278-0046</issn><eissn>1557-9948</eissn><coden>ITIED6</coden><abstract>A quasi-Z-source modular cascaded converter (qZS-MCC) is proposed for dc integration of high-power photovoltaic (PV) systems. The qZS-MCC comprises series-connected front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs). With the front-end isolation, the qZS-MCC achieves high-voltage dc capability, while maintaining modularity and PV panel grounded. The post-stage qZS-HB handles the PV voltage and power flows, dc-link voltage balance, and output-series power integration. Whereas, the front-end isolation converters of all SMs perform a constant duty cycle, lowing the control complexity. There is no double-line-frequency power flowing through the dc-side PV panels, qZS inductors, and qZS capacitors in the qZS-MCC, so small qZS impedance is possible compared to the existing qZS cascaded multilevel inverter. The configuration, operating principle, power loss evaluation, and passive components design of the proposed system are investigated in this part of the paper. The system control, modeling, and corresponding verifications are stated in Part II of this paper.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIE.2016.2598673</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | IEEE transactions on industrial electronics (1982), 2017-01, Vol.64 (1), p.347-358 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Capacitors Configurations DC-DC power converters DC–DC power conversion Electric bridges galvanic isolation Impedance Inductors Inverters Modularity Passive components Photovoltaic cells photovoltaic power system Power flow Power systems quasi-Z-source converter Voltage control Voltage converters (DC to DC) |
| title | Front-End Isolated Quasi-Z-Source DC–DC Converter Modules in Series for High-Power Photovoltaic Systems—Part I: Configuration, Operation, and Evaluation |
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