A Family of Autoconnected Transformers for 12- and 18-Pulse Converters-Generalization for Delta and Wye Topologies
Multipulse rectifier topologies based on autoconnections are increasingly applied as interface stages between mains and power electronics converters. These topologies are attractive and cost-effective solutions for meeting the requirements of low total harmonic distortion of line current and high po...
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| Veröffentlicht in: | IEEE transactions on power electronics 2011-07, Vol.26 (7), p.2065-2078 |
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| creator | Fernandes, R. C. da Silva Oliveira, P. de Seixas, F. J. M. |
| description | Multipulse rectifier topologies based on autoconnections are increasingly applied as interface stages between mains and power electronics converters. These topologies are attractive and cost-effective solutions for meeting the requirements of low total harmonic distortion of line current and high power factor. Furthermore, as only a small fraction of the total power required by the load is processed in the magnetic core, the overall resulting volume and weight are reduced. This paper proposes a mathematical analysis based on phasor diagrams that results in a single and general expression capable of unifying all delta and wye step-up or step-down autotransformer connections for 12- and 18-pulse ac-dc converters. The expression obtained allows the choice of a wide range of input/output voltage ratio for step-up or step-down autotransformer, and this general expression is also presented in a graphical form for each converter. Moreover, it simplifies the procedure for determining turn ratios and polarities for all windings of the autotransformer. A routine for easy and fast calculations is developed and validated by a design example. Finally, experimental results are presented along with comments on a 6-kW 220-V line voltage, 400-V rectified voltage, and 18-pulse delta-autoconnected prototype. |
| doi_str_mv | 10.1109/TPEL.2010.2102773 |
| format | Article |
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C. ; da Silva Oliveira, P. ; de Seixas, F. J. M.</creator><creatorcontrib>Fernandes, R. C. ; da Silva Oliveira, P. ; de Seixas, F. J. M.</creatorcontrib><description>Multipulse rectifier topologies based on autoconnections are increasingly applied as interface stages between mains and power electronics converters. These topologies are attractive and cost-effective solutions for meeting the requirements of low total harmonic distortion of line current and high power factor. Furthermore, as only a small fraction of the total power required by the load is processed in the magnetic core, the overall resulting volume and weight are reduced. This paper proposes a mathematical analysis based on phasor diagrams that results in a single and general expression capable of unifying all delta and wye step-up or step-down autotransformer connections for 12- and 18-pulse ac-dc converters. The expression obtained allows the choice of a wide range of input/output voltage ratio for step-up or step-down autotransformer, and this general expression is also presented in a graphical form for each converter. Moreover, it simplifies the procedure for determining turn ratios and polarities for all windings of the autotransformer. A routine for easy and fast calculations is developed and validated by a design example. Finally, experimental results are presented along with comments on a 6-kW 220-V line voltage, 400-V rectified voltage, and 18-pulse delta-autoconnected prototype.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2010.2102773</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Autotransformer ; Autotransformers ; Bridge circuits ; Circuit properties ; Converters ; Deltas ; Electric currents ; Electric potential ; Electric power ; Electric, optical and optoelectronic circuits ; Electrical engineering. Electrical power engineering ; Electronic circuits ; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics ; Electronics ; Exact sciences and technology ; Genetic expression ; Magnetic cores ; Mathematical analysis ; multipulse topologies ; Power electronics, power supplies ; power factor correction ; Rectifiers ; Signal convertors ; Topology ; Transformers ; Transformers and inductors ; Voltage ; Windings</subject><ispartof>IEEE transactions on power electronics, 2011-07, Vol.26 (7), p.2065-2078</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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C.</creatorcontrib><creatorcontrib>da Silva Oliveira, P.</creatorcontrib><creatorcontrib>de Seixas, F. J. M.</creatorcontrib><title>A Family of Autoconnected Transformers for 12- and 18-Pulse Converters-Generalization for Delta and Wye Topologies</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>Multipulse rectifier topologies based on autoconnections are increasingly applied as interface stages between mains and power electronics converters. These topologies are attractive and cost-effective solutions for meeting the requirements of low total harmonic distortion of line current and high power factor. Furthermore, as only a small fraction of the total power required by the load is processed in the magnetic core, the overall resulting volume and weight are reduced. This paper proposes a mathematical analysis based on phasor diagrams that results in a single and general expression capable of unifying all delta and wye step-up or step-down autotransformer connections for 12- and 18-pulse ac-dc converters. The expression obtained allows the choice of a wide range of input/output voltage ratio for step-up or step-down autotransformer, and this general expression is also presented in a graphical form for each converter. Moreover, it simplifies the procedure for determining turn ratios and polarities for all windings of the autotransformer. A routine for easy and fast calculations is developed and validated by a design example. Finally, experimental results are presented along with comments on a 6-kW 220-V line voltage, 400-V rectified voltage, and 18-pulse delta-autoconnected prototype.</description><subject>Applied sciences</subject><subject>Autotransformer</subject><subject>Autotransformers</subject><subject>Bridge circuits</subject><subject>Circuit properties</subject><subject>Converters</subject><subject>Deltas</subject><subject>Electric currents</subject><subject>Electric potential</subject><subject>Electric power</subject><subject>Electric, optical and optoelectronic circuits</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electronic circuits</subject><subject>Electronic equipment and fabrication. Passive components, printed wiring boards, connectics</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Genetic expression</subject><subject>Magnetic cores</subject><subject>Mathematical analysis</subject><subject>multipulse topologies</subject><subject>Power electronics, power supplies</subject><subject>power factor correction</subject><subject>Rectifiers</subject><subject>Signal convertors</subject><subject>Topology</subject><subject>Transformers</subject><subject>Transformers and inductors</subject><subject>Voltage</subject><subject>Windings</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkUFrGzEQhUVpoG6aH1B6EYVCL5tqpN2VdDRukhYMzcEhRyFLo7JhLbnSbsD99ZVjk0NPw8z73jDMI-QjsGsApr9t7m_W15zVlgPjUoo3ZAG6haaO5FuyYEp1jdJavCPvS3liDNqOwYLkJb21u2E80BTocp6SSzGim9DTTbaxhJR3mAutlQJvqI2egmru57EgXaX4jHmqenOHEbMdh792GlJ8wb_jONkXw-MB6Sbt05h-D1g-kItgq_3qXC_Jw-3NZvWjWf-6-7larhsnum5qMOgQgHmNW--Bey-2yNSWexAMldVeIWPO9kLIreuRQeCuZ0EKZrVEh-KSfD3t3ef0Z8Yymd1QHI6jjZjmYqCXIHQHXV_Rz_-hT2nOsV5nlGorpvgRghPkciolYzD7POxsPhhg5hiCOYZgjiGYcwjV8-W82BZnx1Bf6obyauRtB4JLVblPJ25AxFe566Vsq_oPfxGQOg</recordid><startdate>20110701</startdate><enddate>20110701</enddate><creator>Fernandes, R. 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M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-ef9ff10d9ebdd12dd3be08b2d130e8a9d8e00ca6337bc6e01f2c60f730a97ece3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Autotransformer</topic><topic>Autotransformers</topic><topic>Bridge circuits</topic><topic>Circuit properties</topic><topic>Converters</topic><topic>Deltas</topic><topic>Electric currents</topic><topic>Electric potential</topic><topic>Electric power</topic><topic>Electric, optical and optoelectronic circuits</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electronic circuits</topic><topic>Electronic equipment and fabrication. Passive components, printed wiring boards, connectics</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Genetic expression</topic><topic>Magnetic cores</topic><topic>Mathematical analysis</topic><topic>multipulse topologies</topic><topic>Power electronics, power supplies</topic><topic>power factor correction</topic><topic>Rectifiers</topic><topic>Signal convertors</topic><topic>Topology</topic><topic>Transformers</topic><topic>Transformers and inductors</topic><topic>Voltage</topic><topic>Windings</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fernandes, R. C.</creatorcontrib><creatorcontrib>da Silva Oliveira, P.</creatorcontrib><creatorcontrib>de Seixas, F. J. 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C.</au><au>da Silva Oliveira, P.</au><au>de Seixas, F. J. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Family of Autoconnected Transformers for 12- and 18-Pulse Converters-Generalization for Delta and Wye Topologies</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2011-07-01</date><risdate>2011</risdate><volume>26</volume><issue>7</issue><spage>2065</spage><epage>2078</epage><pages>2065-2078</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>Multipulse rectifier topologies based on autoconnections are increasingly applied as interface stages between mains and power electronics converters. These topologies are attractive and cost-effective solutions for meeting the requirements of low total harmonic distortion of line current and high power factor. Furthermore, as only a small fraction of the total power required by the load is processed in the magnetic core, the overall resulting volume and weight are reduced. This paper proposes a mathematical analysis based on phasor diagrams that results in a single and general expression capable of unifying all delta and wye step-up or step-down autotransformer connections for 12- and 18-pulse ac-dc converters. The expression obtained allows the choice of a wide range of input/output voltage ratio for step-up or step-down autotransformer, and this general expression is also presented in a graphical form for each converter. Moreover, it simplifies the procedure for determining turn ratios and polarities for all windings of the autotransformer. A routine for easy and fast calculations is developed and validated by a design example. 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| subjects | Applied sciences Autotransformer Autotransformers Bridge circuits Circuit properties Converters Deltas Electric currents Electric potential Electric power Electric, optical and optoelectronic circuits Electrical engineering. Electrical power engineering Electronic circuits Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electronics Exact sciences and technology Genetic expression Magnetic cores Mathematical analysis multipulse topologies Power electronics, power supplies power factor correction Rectifiers Signal convertors Topology Transformers Transformers and inductors Voltage Windings |
| title | A Family of Autoconnected Transformers for 12- and 18-Pulse Converters-Generalization for Delta and Wye Topologies |
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