Current source converter asymmetric multi-level modulation method for flexible interconnection of distribution network
The invention relates to an asymmetric multi-level modulation method of a current source converter for flexible interconnection of a distribution network. The method comprises the following steps: step 1, dividing all non-zero switching states of the asymmetric multi-level current source converter i...
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| creator | TIAN MENG PANG MAN HAO CHUNXIAO ZHAO CHANGWEI ZHANG ZHAO HAN BIN SONG GUANGJU YANG DEBO ZHAO FENGSONG LI HAO YU HANSHEN SHI WEISHUO |
| description | The invention relates to an asymmetric multi-level modulation method of a current source converter for flexible interconnection of a distribution network. The method comprises the following steps: step 1, dividing all non-zero switching states of the asymmetric multi-level current source converter into five types of PWM current vectors; 2, calculating the area of a sector where the reference current vector Ir is located according to the phase angle theta and the modulation factor ma; 3, selecting a proper vector synthesis method, and determining action time of all vectors by combining the value of the phase angle theta; 4, when the I-type current vector and the II-type current vector act, directly obtaining a current source switch state; and when the III-type, IV-type and V-type current vectors act, a proper switching state is selected according to the principle of balancing the direct-current bus current, and corresponding gate pole control signals are generated and sent to each current source converter. Acc |
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The method comprises the following steps: step 1, dividing all non-zero switching states of the asymmetric multi-level current source converter into five types of PWM current vectors; 2, calculating the area of a sector where the reference current vector Ir is located according to the phase angle theta and the modulation factor ma; 3, selecting a proper vector synthesis method, and determining action time of all vectors by combining the value of the phase angle theta; 4, when the I-type current vector and the II-type current vector act, directly obtaining a current source switch state; and when the III-type, IV-type and V-type current vectors act, a proper switching state is selected according to the principle of balancing the direct-current bus current, and corresponding gate pole control signals are generated and sent to each current source converter. Acc</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 ; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONTROL OR REGULATION THEREOF ; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; SYSTEMS FOR STORING ELECTRIC ENERGY</subject><creationdate>2024</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&date=20240927&DB=EPODOC&CC=CN&NR=118713166A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240927&DB=EPODOC&CC=CN&NR=118713166A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TIAN MENG</creatorcontrib><creatorcontrib>PANG MAN</creatorcontrib><creatorcontrib>HAO CHUNXIAO</creatorcontrib><creatorcontrib>ZHAO CHANGWEI</creatorcontrib><creatorcontrib>ZHANG ZHAO</creatorcontrib><creatorcontrib>HAN BIN</creatorcontrib><creatorcontrib>SONG GUANGJU</creatorcontrib><creatorcontrib>YANG DEBO</creatorcontrib><creatorcontrib>ZHAO FENGSONG</creatorcontrib><creatorcontrib>LI HAO</creatorcontrib><creatorcontrib>YU HANSHEN</creatorcontrib><creatorcontrib>SHI WEISHUO</creatorcontrib><title>Current source converter asymmetric multi-level modulation method for flexible interconnection of distribution network</title><description>The invention relates to an asymmetric multi-level modulation method of a current source converter for flexible interconnection of a distribution network. The method comprises the following steps: step 1, dividing all non-zero switching states of the asymmetric multi-level current source converter into five types of PWM current vectors; 2, calculating the area of a sector where the reference current vector Ir is located according to the phase angle theta and the modulation factor ma; 3, selecting a proper vector synthesis method, and determining action time of all vectors by combining the value of the phase angle theta; 4, when the I-type current vector and the II-type current vector act, directly obtaining a current source switch state; and when the III-type, IV-type and V-type current vectors act, a proper switching state is selected according to the principle of balancing the direct-current bus current, and corresponding gate pole control signals are generated and sent to each current source converter. 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The method comprises the following steps: step 1, dividing all non-zero switching states of the asymmetric multi-level current source converter into five types of PWM current vectors; 2, calculating the area of a sector where the reference current vector Ir is located according to the phase angle theta and the modulation factor ma; 3, selecting a proper vector synthesis method, and determining action time of all vectors by combining the value of the phase angle theta; 4, when the I-type current vector and the II-type current vector act, directly obtaining a current source switch state; and when the III-type, IV-type and V-type current vectors act, a proper switching state is selected according to the principle of balancing the direct-current bus current, and corresponding gate pole control signals are generated and sent to each current source converter. Acc</abstract><oa>free_for_read</oa></addata></record> |
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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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | Current source converter asymmetric multi-level modulation method for flexible interconnection of distribution network |
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