MORSE START CIRCUIT AND CONTROL METHOD THEREFOR
PROBLEM TO BE SOLVED: To allow no large start current to flow in a motor output means by permitting the detection of zero crossing point. SOLUTION: A rectifier means 10 generates an exciting current. A mode conversion means 20 switches Morse start mode to general start mode and vice versa so as to r...
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| creator | RI SANYOU TOU SHIMEI |
| description | PROBLEM TO BE SOLVED: To allow no large start current to flow in a motor output means by permitting the detection of zero crossing point. SOLUTION: A rectifier means 10 generates an exciting current. A mode conversion means 20 switches Morse start mode to general start mode and vice versa so as to rectify a motor output means. A model reference zero crossing generating means 30 generates a signal to detect the rotational direction of the motor. A zero crossing detecting means 40 compares a model reference zero crossing signal with an actual zero crossing signal generating during rotation of the motor so as to detect the rotational direction thereof. A phase selection means 50 selects one phase at a time when a coil of each phase of the motor is not excited. A second modulating means 60 widens/shortens the pulse width of exciting current to adjust the exciting current when the starting of motor is failed. A second modulating means 70 adjusts the power-off time interval to be supplied to the motor when the starting of motor is failed. |
| format | Patent |
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A mode conversion means 20 switches Morse start mode to general start mode and vice versa so as to rectify a motor output means. A model reference zero crossing generating means 30 generates a signal to detect the rotational direction of the motor. A zero crossing detecting means 40 compares a model reference zero crossing signal with an actual zero crossing signal generating during rotation of the motor so as to detect the rotational direction thereof. A phase selection means 50 selects one phase at a time when a coil of each phase of the motor is not excited. A second modulating means 60 widens/shortens the pulse width of exciting current to adjust the exciting current when the starting of motor is failed. A second modulating means 70 adjusts the power-off time interval to be supplied to the motor when the starting of motor is failed.</description><edition>6</edition><language>eng</language><subject>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS ; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS ; GENERATION</subject><creationdate>1997</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=19970620&DB=EPODOC&CC=JP&NR=H09163789A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970620&DB=EPODOC&CC=JP&NR=H09163789A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>RI SANYOU</creatorcontrib><creatorcontrib>TOU SHIMEI</creatorcontrib><title>MORSE START CIRCUIT AND CONTROL METHOD THEREFOR</title><description>PROBLEM TO BE SOLVED: To allow no large start current to flow in a motor output means by permitting the detection of zero crossing point. SOLUTION: A rectifier means 10 generates an exciting current. A mode conversion means 20 switches Morse start mode to general start mode and vice versa so as to rectify a motor output means. A model reference zero crossing generating means 30 generates a signal to detect the rotational direction of the motor. A zero crossing detecting means 40 compares a model reference zero crossing signal with an actual zero crossing signal generating during rotation of the motor so as to detect the rotational direction thereof. A phase selection means 50 selects one phase at a time when a coil of each phase of the motor is not excited. A second modulating means 60 widens/shortens the pulse width of exciting current to adjust the exciting current when the starting of motor is failed. A second modulating means 70 adjusts the power-off time interval to be supplied to the motor when the starting of motor is failed.</description><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>EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND39Q8KdlUIDnEMClFw9gxyDvUMUXD0c1Fw9vcLCfL3UfB1DfHwd1EI8XANcnXzD-JhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfFeAR4GloZmxuYWlo7GxKgBABjCJmk</recordid><startdate>19970620</startdate><enddate>19970620</enddate><creator>RI SANYOU</creator><creator>TOU SHIMEI</creator><scope>EVB</scope></search><sort><creationdate>19970620</creationdate><title>MORSE START CIRCUIT AND CONTROL METHOD THEREFOR</title><author>RI SANYOU ; TOU SHIMEI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH09163789A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1997</creationdate><topic>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS</topic><topic>CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS</topic><topic>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>RI SANYOU</creatorcontrib><creatorcontrib>TOU SHIMEI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>RI SANYOU</au><au>TOU SHIMEI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MORSE START CIRCUIT AND CONTROL METHOD THEREFOR</title><date>1997-06-20</date><risdate>1997</risdate><abstract>PROBLEM TO BE SOLVED: To allow no large start current to flow in a motor output means by permitting the detection of zero crossing point. SOLUTION: A rectifier means 10 generates an exciting current. A mode conversion means 20 switches Morse start mode to general start mode and vice versa so as to rectify a motor output means. A model reference zero crossing generating means 30 generates a signal to detect the rotational direction of the motor. A zero crossing detecting means 40 compares a model reference zero crossing signal with an actual zero crossing signal generating during rotation of the motor so as to detect the rotational direction thereof. A phase selection means 50 selects one phase at a time when a coil of each phase of the motor is not excited. A second modulating means 60 widens/shortens the pulse width of exciting current to adjust the exciting current when the starting of motor is failed. A second modulating means 70 adjusts the power-off time interval to be supplied to the motor when the starting of motor is failed.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION |
| title | MORSE START CIRCUIT AND CONTROL METHOD THEREFOR |
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