Double-space vector modulation method of quasi-Z-source network direct matrix converter

Double-space vector modulation method of quasi-Z-source network direct matrix converter

The invention designs a double-space vector modulation method of a quasi-Z-source network direct matrix converter. The method comprises the following steps: 1, collecting three-phase input voltages Ua, Ub and Uc and three-phase output currents iA, iB and iC of the quasi-Z-source direct matrix conver...

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Hauptverfasser: ZOU BOWEI, GUO YOUGUI
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Sprache:chi ; eng
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APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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creator ZOU BOWEI
GUO YOUGUI
description The invention designs a double-space vector modulation method of a quasi-Z-source network direct matrix converter. The method comprises the following steps: 1, collecting three-phase input voltages Ua, Ub and Uc and three-phase output currents iA, iB and iC of the quasi-Z-source direct matrix converter; 2, enabling the quasi-Z-source network direct matrix converter to be equivalent to a series circuit model of a virtual rectification stage and a virtual inversion stage; 3, finding out all straight-through zero vectors by analyzing the switching state of the QZS-DMC; 4, performing space vectormodulation, and performing effective combination with 27 basic space vectors through combination selection of sectors; 5, analyzing the voltage transmission ratio; and 6, analyzing a switching time sequence, and adjusting a vector action sequence and action time, and finally, forming the double-space vector modulation method provided by the invention on the basis of ensuring the lowest switching frequency of the bidirecti
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The method comprises the following steps: 1, collecting three-phase input voltages Ua, Ub and Uc and three-phase output currents iA, iB and iC of the quasi-Z-source direct matrix converter; 2, enabling the quasi-Z-source network direct matrix converter to be equivalent to a series circuit model of a virtual rectification stage and a virtual inversion stage; 3, finding out all straight-through zero vectors by analyzing the switching state of the QZS-DMC; 4, performing space vectormodulation, and performing effective combination with 27 basic space vectors through combination selection of sectors; 5, analyzing the voltage transmission ratio; and 6, analyzing a switching time sequence, and adjusting a vector action sequence and action time, and finally, forming the double-space vector modulation method provided by the invention on the basis of ensuring the lowest switching frequency of the bidirecti</description><language>chi ; eng</language><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ; CONTROL OR REGULATION THEREOF ; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20200818&amp;DB=EPODOC&amp;CC=CN&amp;NR=111555635A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20200818&amp;DB=EPODOC&amp;CC=CN&amp;NR=111555635A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZOU BOWEI</creatorcontrib><creatorcontrib>GUO YOUGUI</creatorcontrib><title>Double-space vector modulation method of quasi-Z-source network direct matrix converter</title><description>The invention designs a double-space vector modulation method of a quasi-Z-source network direct matrix converter. 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subjects APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
title Double-space vector modulation method of quasi-Z-source network direct matrix converter
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