HIGHER HARMONICS COMPENSATING DEVICE
PURPOSE:To prevent occurrence of the switching loss by selecting a compensating mode in response to the level of the higher harmonic current to be compensated. CONSTITUTION:A compensating capacity arithmetic circuit 6 calculates the compensating capacity KVA from an AC component - p of the instantan...
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| creator | ATO SATOSHI KOBATA MASAKAZU SHIODA TAKESHI |
| description | PURPOSE:To prevent occurrence of the switching loss by selecting a compensating mode in response to the level of the higher harmonic current to be compensated. CONSTITUTION:A compensating capacity arithmetic circuit 6 calculates the compensating capacity KVA from an AC component - p of the instantaneous real electric power and an AC component - q of the instantaneous imaginary electric power. A comparator 7 produces an actuating command R* for a compensating device from the capacity KVA, the prescribed compensating device designated capacity KVA* and a constant T which decides the lower limit capacity. A command power arithmetic circuit 8 multiplies both the instantaneous real electric power (p) and the instantaneous imaginary electric power (q) calculated by an electric power arithmetic circuit 1 by the command R* for calculation of the commanded real electric power p' and the commanded imaginary electric power q' respectively. Both powers p' and q' are supplied to an HPF 2' for deletion of DC component and an AC component - p' of the commanded real electric power and an AC component - q' of the commanded imaginary electric power are obtained. A current control circuit 5 is controlled by the command R* received from the comparator 7. |
| format | Patent |
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CONSTITUTION:A compensating capacity arithmetic circuit 6 calculates the compensating capacity KVA from an AC component - p of the instantaneous real electric power and an AC component - q of the instantaneous imaginary electric power. A comparator 7 produces an actuating command R* for a compensating device from the capacity KVA, the prescribed compensating device designated capacity KVA* and a constant T which decides the lower limit capacity. A command power arithmetic circuit 8 multiplies both the instantaneous real electric power (p) and the instantaneous imaginary electric power (q) calculated by an electric power arithmetic circuit 1 by the command R* for calculation of the commanded real electric power p' and the commanded imaginary electric power q' respectively. Both powers p' and q' are supplied to an HPF 2' for deletion of DC component and an AC component - p' of the commanded real electric power and an AC component - q' of the commanded imaginary electric power are obtained. A current control circuit 5 is controlled by the command R* received from the comparator 7.</description><language>eng</language><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONTROLLING ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; PHYSICS ; REGULATING ; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES ; SYSTEMS FOR STORING ELECTRIC ENERGY</subject><creationdate>1988</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=19880630&DB=EPODOC&CC=JP&NR=S63157213A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19880630&DB=EPODOC&CC=JP&NR=S63157213A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ATO SATOSHI</creatorcontrib><creatorcontrib>KOBATA MASAKAZU</creatorcontrib><creatorcontrib>SHIODA TAKESHI</creatorcontrib><title>HIGHER HARMONICS COMPENSATING DEVICE</title><description>PURPOSE:To prevent occurrence of the switching loss by selecting a compensating mode in response to the level of the higher harmonic current to be compensated. CONSTITUTION:A compensating capacity arithmetic circuit 6 calculates the compensating capacity KVA from an AC component - p of the instantaneous real electric power and an AC component - q of the instantaneous imaginary electric power. A comparator 7 produces an actuating command R* for a compensating device from the capacity KVA, the prescribed compensating device designated capacity KVA* and a constant T which decides the lower limit capacity. A command power arithmetic circuit 8 multiplies both the instantaneous real electric power (p) and the instantaneous imaginary electric power (q) calculated by an electric power arithmetic circuit 1 by the command R* for calculation of the commanded real electric power p' and the commanded imaginary electric power q' respectively. Both powers p' and q' are supplied to an HPF 2' for deletion of DC component and an AC component - p' of the commanded real electric power and an AC component - q' of the commanded imaginary electric power are obtained. A current control circuit 5 is controlled by the command R* received from the comparator 7.</description><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</subject><subject>CONTROLLING</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>PHYSICS</subject><subject>REGULATING</subject><subject>SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES</subject><subject>SYSTEMS FOR STORING ELECTRIC ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1988</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDx8HT3cA1S8HAM8vX383QOVnD29w1w9Qt2DPH0c1dwcQ3zdHblYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgHBZsaGpuZGhsaOxsSoAQCGwSNO</recordid><startdate>19880630</startdate><enddate>19880630</enddate><creator>ATO SATOSHI</creator><creator>KOBATA MASAKAZU</creator><creator>SHIODA TAKESHI</creator><scope>EVB</scope></search><sort><creationdate>19880630</creationdate><title>HIGHER HARMONICS COMPENSATING DEVICE</title><author>ATO SATOSHI ; KOBATA MASAKAZU ; SHIODA TAKESHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS63157213A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1988</creationdate><topic>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</topic><topic>CONTROLLING</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>PHYSICS</topic><topic>REGULATING</topic><topic>SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES</topic><topic>SYSTEMS FOR STORING ELECTRIC ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>ATO SATOSHI</creatorcontrib><creatorcontrib>KOBATA MASAKAZU</creatorcontrib><creatorcontrib>SHIODA TAKESHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ATO SATOSHI</au><au>KOBATA MASAKAZU</au><au>SHIODA TAKESHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HIGHER HARMONICS COMPENSATING DEVICE</title><date>1988-06-30</date><risdate>1988</risdate><abstract>PURPOSE:To prevent occurrence of the switching loss by selecting a compensating mode in response to the level of the higher harmonic current to be compensated. CONSTITUTION:A compensating capacity arithmetic circuit 6 calculates the compensating capacity KVA from an AC component - p of the instantaneous real electric power and an AC component - q of the instantaneous imaginary electric power. A comparator 7 produces an actuating command R* for a compensating device from the capacity KVA, the prescribed compensating device designated capacity KVA* and a constant T which decides the lower limit capacity. A command power arithmetic circuit 8 multiplies both the instantaneous real electric power (p) and the instantaneous imaginary electric power (q) calculated by an electric power arithmetic circuit 1 by the command R* for calculation of the commanded real electric power p' and the commanded imaginary electric power q' respectively. Both powers p' and q' are supplied to an HPF 2' for deletion of DC component and an AC component - p' of the commanded real electric power and an AC component - q' of the commanded imaginary electric power are obtained. A current control circuit 5 is controlled by the command R* received from the comparator 7.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROLLING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | HIGHER HARMONICS COMPENSATING DEVICE |
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