Method for starting pulse width modulation
A method for starting the modulation of a frequency converter, which method comprises the steps of receiving reference voltage (s a , s b , s c ; U ref ), generating output switch commands from the reference voltages. The generation of output switch commands comprises further a step, in which the ra...
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| creator | SALOMAEKI, JANNE |
| description | A method for starting the modulation of a frequency converter, which method comprises the steps of receiving reference voltage (s a , s b , s c ; U ref ), generating output switch commands from the reference voltages. The generation of output switch commands comprises further a step, in which the ratio (d z ) of active time (T 0+ ) in a modulation period (T s ) of selected zero vector and the total active time (T 0+ + T 0- ) of zero vectors in a modulation period is changed from a first predetermined ratio, which is substantially 0 or 1, to a second predetermined ratio, which is substantially 0,5. |
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The generation of output switch commands comprises further a step, in which the ratio (d z ) of active time (T 0+ ) in a modulation period (T s ) of selected zero vector and the total active time (T 0+ + T 0- ) of zero vectors in a modulation period is changed from a first predetermined ratio, which is substantially 0 or 1, to a second predetermined ratio, which is substantially 0,5.</description><language>eng ; fre ; ger</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>2010</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=20100804&DB=EPODOC&CC=EP&NR=1811641B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20100804&DB=EPODOC&CC=EP&NR=1811641B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SALOMAEKI, JANNE</creatorcontrib><title>Method for starting pulse width modulation</title><description>A method for starting the modulation of a frequency converter, which method comprises the steps of receiving reference voltage (s a , s b , s c ; U ref ), generating output switch commands from the reference voltages. The generation of output switch commands comprises further a step, in which the ratio (d z ) of active time (T 0+ ) in a modulation period (T s ) of selected zero vector and the total active time (T 0+ + T 0- ) of zero vectors in a modulation period is changed from a first predetermined ratio, which is substantially 0 or 1, to a second predetermined ratio, which is substantially 0,5.</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>2010</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDyTS3JyE9RSMsvUiguSSwqycxLVygozSlOVSjPTCnJUMjNTynNSSzJzM_jYWBNSwRK8EJpbgYFN9cQZw_d1IL8-NTigsTk1LzUknjXAEMLQ0MzE0MnQ2MilAAA-Rco4A</recordid><startdate>20100804</startdate><enddate>20100804</enddate><creator>SALOMAEKI, JANNE</creator><scope>EVB</scope></search><sort><creationdate>20100804</creationdate><title>Method for starting pulse width modulation</title><author>SALOMAEKI, JANNE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1811641B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2010</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>SALOMAEKI, JANNE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SALOMAEKI, JANNE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for starting pulse width modulation</title><date>2010-08-04</date><risdate>2010</risdate><abstract>A method for starting the modulation of a frequency converter, which method comprises the steps of receiving reference voltage (s a , s b , s c ; U ref ), generating output switch commands from the reference voltages. The generation of output switch commands comprises further a step, in which the ratio (d z ) of active time (T 0+ ) in a modulation period (T s ) of selected zero vector and the total active time (T 0+ + T 0- ) of zero vectors in a modulation period is changed from a first predetermined ratio, which is substantially 0 or 1, to a second predetermined ratio, which is substantially 0,5.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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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 starting pulse width modulation |
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