Voltage conversion device and voltage conversion method
A voltage conversion device and a voltage conversion method are provided in which, even immediately after switching a switching frequency, it is possible to suppress fluctuation of output voltage and possible to output a constant voltage in a stable manner. When switching the switching frequency fro...
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| creator | Higashi, Makoto |
| description | A voltage conversion device and a voltage conversion method are provided in which, even immediately after switching a switching frequency, it is possible to suppress fluctuation of output voltage and possible to output a constant voltage in a stable manner. When switching the switching frequency from a first frequency to a second frequency, a duty ratio is changed in a first cycle of a PWM signal immediately after switching so as to be smaller than the duty ratio before switching. The amount of change in this case is set such that a lower limit value of inductor current immediately after switching the switching frequency matches the lower limit value in a steady state. With this sort of change, an increase in the inductor current immediately after switching is suppressed, fluctuation of the output voltage is suppressed, and a stable constant voltage is outputted to a load. |
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When switching the switching frequency from a first frequency to a second frequency, a duty ratio is changed in a first cycle of a PWM signal immediately after switching so as to be smaller than the duty ratio before switching. The amount of change in this case is set such that a lower limit value of inductor current immediately after switching the switching frequency matches the lower limit value in a steady state. With this sort of change, an increase in the inductor current immediately after switching is suppressed, fluctuation of the output voltage is suppressed, and a stable constant voltage is outputted to a load.</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>2019</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=20190507&DB=EPODOC&CC=US&NR=10284070B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190507&DB=EPODOC&CC=US&NR=10284070B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Higashi, Makoto</creatorcontrib><title>Voltage conversion device and voltage conversion method</title><description>A voltage conversion device and a voltage conversion method are provided in which, even immediately after switching a switching frequency, it is possible to suppress fluctuation of output voltage and possible to output a constant voltage in a stable manner. When switching the switching frequency from a first frequency to a second frequency, a duty ratio is changed in a first cycle of a PWM signal immediately after switching so as to be smaller than the duty ratio before switching. The amount of change in this case is set such that a lower limit value of inductor current immediately after switching the switching frequency matches the lower limit value in a steady state. With this sort of change, an increase in the inductor current immediately after switching is suppressed, fluctuation of the output voltage is suppressed, and a stable constant voltage is outputted to a load.</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>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAPy88pSUxPVUjOzytLLSrOzM9TSEkty0xOVUjMS1Eow5TNTS3JyE_hYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxocGGBkYWJgbmBk5GxsSoAQAFvS5y</recordid><startdate>20190507</startdate><enddate>20190507</enddate><creator>Higashi, Makoto</creator><scope>EVB</scope></search><sort><creationdate>20190507</creationdate><title>Voltage conversion device and voltage conversion method</title><author>Higashi, Makoto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US10284070B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2019</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>Higashi, Makoto</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Higashi, Makoto</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Voltage conversion device and voltage conversion method</title><date>2019-05-07</date><risdate>2019</risdate><abstract>A voltage conversion device and a voltage conversion method are provided in which, even immediately after switching a switching frequency, it is possible to suppress fluctuation of output voltage and possible to output a constant voltage in a stable manner. When switching the switching frequency from a first frequency to a second frequency, a duty ratio is changed in a first cycle of a PWM signal immediately after switching so as to be smaller than the duty ratio before switching. The amount of change in this case is set such that a lower limit value of inductor current immediately after switching the switching frequency matches the lower limit value in a steady state. With this sort of change, an increase in the inductor current immediately after switching is suppressed, fluctuation of the output voltage is suppressed, and a stable constant voltage is outputted to a load.</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 | Voltage conversion device and voltage conversion method |
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