Method for operating an inverter, and inverter
The invention relates to a method for operating an inverter (1) and to an inverter (1) for converting a direct voltage (UDC) into an alternating voltage (UAC) with a specified grid frequency (fAC) for supplying loads (12) and/or feeding into a supply grid (13), comprising a direct voltage input (2)...
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| creator | Starzinger, Johannes Nagelmueller, Martin |
| description | The invention relates to a method for operating an inverter (1) and to an inverter (1) for converting a direct voltage (UDC) into an alternating voltage (UAC) with a specified grid frequency (fAC) for supplying loads (12) and/or feeding into a supply grid (13), comprising a direct voltage input (2) and multiple AC power units (6) which are connected in parallel and comprise semiconductor switches (7) in a bridge circuit and freewheeling diodes (8) arranged parallel thereto. The outputs of the AC power units (6) are connected to an alternating voltage output (10) via a respective inductivity (9). A common controller (11) is provided for synchronously controlling the semiconductor switches (7) of the AC power units (6) connected in parallel with a switching frequency (fS) in order to prevent imbalances between the parallel AC power units (6), said controller (11) being designed to block the semiconductor switches (7) of the AC power units (6) during individual zero crossings of the output alternating current (IAC) over a specified duration (tF) such that the inductivities (9) can be discharged via the freewheeling diodes (8) of the semiconductor switches (7) and the sub-output currents (IAi) of the parallel AC power units (6) can thus be balanced. |
| format | Patent |
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The outputs of the AC power units (6) are connected to an alternating voltage output (10) via a respective inductivity (9). A common controller (11) is provided for synchronously controlling the semiconductor switches (7) of the AC power units (6) connected in parallel with a switching frequency (fS) in order to prevent imbalances between the parallel AC power units (6), said controller (11) being designed to block the semiconductor switches (7) of the AC power units (6) during individual zero crossings of the output alternating current (IAC) over a specified duration (tF) such that the inductivities (9) can be discharged via the freewheeling diodes (8) of the semiconductor switches (7) and the sub-output currents (IAi) of the parallel AC power units (6) can thus be balanced.</description><language>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&date=20201020&DB=EPODOC&CC=US&NR=10811996B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201020&DB=EPODOC&CC=US&NR=10811996B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Starzinger, Johannes</creatorcontrib><creatorcontrib>Nagelmueller, Martin</creatorcontrib><title>Method for operating an inverter, and inverter</title><description>The invention relates to a method for operating an inverter (1) and to an inverter (1) for converting a direct voltage (UDC) into an alternating voltage (UAC) with a specified grid frequency (fAC) for supplying loads (12) and/or feeding into a supply grid (13), comprising a direct voltage input (2) and multiple AC power units (6) which are connected in parallel and comprise semiconductor switches (7) in a bridge circuit and freewheeling diodes (8) arranged parallel thereto. The outputs of the AC power units (6) are connected to an alternating voltage output (10) via a respective inductivity (9). A common controller (11) is provided for synchronously controlling the semiconductor switches (7) of the AC power units (6) connected in parallel with a switching frequency (fS) in order to prevent imbalances between the parallel AC power units (6), said controller (11) being designed to block the semiconductor switches (7) of the AC power units (6) during individual zero crossings of the output alternating current (IAC) over a specified duration (tF) such that the inductivities (9) can be discharged via the freewheeling diodes (8) of the semiconductor switches (7) and the sub-output currents (IAi) of the parallel AC power units (6) can thus be balanced.</description><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</subject><subject>CONTROL OR REGULATION THEREOF</subject><subject>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDzTS3JyE9RSMsvUsgvSC1KLMnMS1dIzFPIzCtLLSpJLdIBclLgPB4G1rTEnOJUXijNzaDo5hri7KGbWpAfn1pckJicmpdaEh8abGhgYWhoaWnmZGRMjBoA5oIqjA</recordid><startdate>20201020</startdate><enddate>20201020</enddate><creator>Starzinger, Johannes</creator><creator>Nagelmueller, Martin</creator><scope>EVB</scope></search><sort><creationdate>20201020</creationdate><title>Method for operating an inverter, and inverter</title><author>Starzinger, Johannes ; Nagelmueller, Martin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US10811996B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2020</creationdate><topic>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</topic><topic>CONTROL OR REGULATION THEREOF</topic><topic>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>Starzinger, Johannes</creatorcontrib><creatorcontrib>Nagelmueller, Martin</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Starzinger, Johannes</au><au>Nagelmueller, Martin</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for operating an inverter, and inverter</title><date>2020-10-20</date><risdate>2020</risdate><abstract>The invention relates to a method for operating an inverter (1) and to an inverter (1) for converting a direct voltage (UDC) into an alternating voltage (UAC) with a specified grid frequency (fAC) for supplying loads (12) and/or feeding into a supply grid (13), comprising a direct voltage input (2) and multiple AC power units (6) which are connected in parallel and comprise semiconductor switches (7) in a bridge circuit and freewheeling diodes (8) arranged parallel thereto. The outputs of the AC power units (6) are connected to an alternating voltage output (10) via a respective inductivity (9). A common controller (11) is provided for synchronously controlling the semiconductor switches (7) of the AC power units (6) connected in parallel with a switching frequency (fS) in order to prevent imbalances between the parallel AC power units (6), said controller (11) being designed to block the semiconductor switches (7) of the AC power units (6) during individual zero crossings of the output alternating current (IAC) over a specified duration (tF) such that the inductivities (9) can be discharged via the freewheeling diodes (8) of the semiconductor switches (7) and the sub-output currents (IAi) of the parallel AC power units (6) can thus be balanced.</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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION |
| title | Method for operating an inverter, and inverter |
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