Current detection device and motor drive device provided with same
This current detection device comprises: a main current detection circuit and an offset correction current detection circuit for detecting the current through a current pathway at the same detection position; a short-circuit unit for short-circuiting between the current input terminals of an AD conv...
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| creator | OOI, YOUICHIROU |
| description | This current detection device comprises: a main current detection circuit and an offset correction current detection circuit for detecting the current through a current pathway at the same detection position; a short-circuit unit for short-circuiting between the current input terminals of an AD converter in the offset correction current detection circuit; a first offset correction unit for measuring a first offset of the offset correction current detection circuit while short-circuiting is occurring between the current input terminals, and removing a first offset equivalent from the output of the offset correction current detection circuit; and a second offset correction unit for calculating a second offset amount of the main current detection circuit on the basis of the corrected output of the offset correction current detection circuit and the output of the main current detection circuit obtained at the same detection timing while no short-circuiting is occurring between the current input terminals, and rem |
| format | Patent |
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a short-circuit unit for short-circuiting between the current input terminals of an AD converter in the offset correction current detection circuit; a first offset correction unit for measuring a first offset of the offset correction current detection circuit while short-circuiting is occurring between the current input terminals, and removing a first offset equivalent from the output of the offset correction current detection circuit; and a second offset correction unit for calculating a second offset amount of the main current detection circuit on the basis of the corrected output of the offset correction current detection circuit and the output of the main current detection circuit obtained at the same detection timing while no short-circuiting is occurring between the current input terminals, and rem</description><language>chi ; eng</language><subject>AMPLIFIERS ; BASIC ELECTRONIC CIRCUITRY ; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS ; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION</subject><creationdate>2023</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=20230916&DB=EPODOC&CC=TW&NR=202337131A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230916&DB=EPODOC&CC=TW&NR=202337131A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OOI, YOUICHIROU</creatorcontrib><title>Current detection device and motor drive device provided with same</title><description>This current detection device comprises: a main current detection circuit and an offset correction current detection circuit for detecting the current through a current pathway at the same detection position; a short-circuit unit for short-circuiting between the current input terminals of an AD converter in the offset correction current detection circuit; a first offset correction unit for measuring a first offset of the offset correction current detection circuit while short-circuiting is occurring between the current input terminals, and removing a first offset equivalent from the output of the offset correction current detection circuit; and a second offset correction unit for calculating a second offset amount of the main current detection circuit on the basis of the corrected output of the offset correction current detection circuit and the output of the main current detection circuit obtained at the same detection timing while no short-circuiting is occurring between the current input terminals, and rem</description><subject>AMPLIFIERS</subject><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS</subject><subject>CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHByLi0qSs0rUUhJLUlNLsnMzwOyyjKTUxUS81IUcvNL8osUUooyy1JhwgVF-WWZKakpCuWZJRkKxYm5qTwMrGmJOcWpvFCam0HRzTXE2UM3tSA_PrW4IDE5NS-1JD4k3MjAyNjY3NDY0NGYGDUARw0yKA</recordid><startdate>20230916</startdate><enddate>20230916</enddate><creator>OOI, YOUICHIROU</creator><scope>EVB</scope></search><sort><creationdate>20230916</creationdate><title>Current detection device and motor drive device provided with same</title><author>OOI, YOUICHIROU</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_TW202337131A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; 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a short-circuit unit for short-circuiting between the current input terminals of an AD converter in the offset correction current detection circuit; a first offset correction unit for measuring a first offset of the offset correction current detection circuit while short-circuiting is occurring between the current input terminals, and removing a first offset equivalent from the output of the offset correction current detection circuit; and a second offset correction unit for calculating a second offset amount of the main current detection circuit on the basis of the corrected output of the offset correction current detection circuit and the output of the main current detection circuit obtained at the same detection timing while no short-circuiting is occurring between the current input terminals, and rem</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION |
| title | Current detection device and motor drive device provided with same |
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