Method for detecting position of rotor of electrically excited synchronous motor without sensor in whole process based on excitation current pulse response
The invention relates to a method for detecting the position of a rotor of an electrically excited synchronous motor without a sensor in a whole process based on excitation current pulse response, belonging to the field of control of motors. The problem that injection of a high-frequency signal from...
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| creator | KOU JIABAO XU DIANGUO HAN XIAO GAO QIANG LI WENSHUANG ZHANG WANYING |
| description | The invention relates to a method for detecting the position of a rotor of an electrically excited synchronous motor without a sensor in a whole process based on excitation current pulse response, belonging to the field of control of motors. The problem that injection of a high-frequency signal from a stator side is limited by a frequency converter control method can be solved. The method disclosed by the invention comprises the following steps of: (1), adopting a triggering strategy of an excitation bridge circuit, such that a pulse signal having a fixed frequency is superposed on excitation current on the basis of a direct-current component, wherein the fixed frequency of the pulse signal is fh; (2), acquiring three-phase counter electromotive force line voltage of the motor, and extracting the pulse signal, the frequency of which is fh; (3), extracting envelope lines eAB_h, eBC_h and eCA_h of three-phase high-frequency signal induced electromotive force of the pulse signal, the frequency of which is fh; an |
| format | Patent |
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The problem that injection of a high-frequency signal from a stator side is limited by a frequency converter control method can be solved. The method disclosed by the invention comprises the following steps of: (1), adopting a triggering strategy of an excitation bridge circuit, such that a pulse signal having a fixed frequency is superposed on excitation current on the basis of a direct-current component, wherein the fixed frequency of the pulse signal is fh; (2), acquiring three-phase counter electromotive force line voltage of the motor, and extracting the pulse signal, the frequency of which is fh; (3), extracting envelope lines eAB_h, eBC_h and eCA_h of three-phase high-frequency signal induced electromotive force of the pulse signal, the frequency of which is fh; an</description><language>chi ; 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 ; GENERATION</subject><creationdate>2016</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=20160907&DB=EPODOC&CC=CN&NR=105932913A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160907&DB=EPODOC&CC=CN&NR=105932913A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KOU JIABAO</creatorcontrib><creatorcontrib>XU DIANGUO</creatorcontrib><creatorcontrib>HAN XIAO</creatorcontrib><creatorcontrib>GAO QIANG</creatorcontrib><creatorcontrib>LI WENSHUANG</creatorcontrib><creatorcontrib>ZHANG WANYING</creatorcontrib><title>Method for detecting position of rotor of electrically excited synchronous motor without sensor in whole process based on excitation current pulse response</title><description>The invention relates to a method for detecting the position of a rotor of an electrically excited synchronous motor without a sensor in a whole process based on excitation current pulse response, belonging to the field of control of motors. The problem that injection of a high-frequency signal from a stator side is limited by a frequency converter control method can be solved. The method disclosed by the invention comprises the following steps of: (1), adopting a triggering strategy of an excitation bridge circuit, such that a pulse signal having a fixed frequency is superposed on excitation current on the basis of a direct-current component, wherein the fixed frequency of the pulse signal is fh; (2), acquiring three-phase counter electromotive force line voltage of the motor, and extracting the pulse signal, the frequency of which is fh; (3), extracting envelope lines eAB_h, eBC_h and eCA_h of three-phase high-frequency signal induced electromotive force of the pulse signal, the frequency of which is fh; an</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>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjT0OwjAMRrswIOAO5gBIQMXAiCoQC0zsKKQujRTsKHZVehYui1VxACb_fM_P0-JzQW25hoYz1KjoNdATEkvQwATcQGa1zBqMlubgXYwD4NsHxRpkIN9mJu4EXiPZBxN2CoIkNgaCvuWIkDJ7FIGHE7sz96hw4xvf5YykkLooCBklMQnOi0njbLH41VmxPB1v1XmFie_GOI-Eeq-um_VuX273m_JQ_sN8AWBcVQk</recordid><startdate>20160907</startdate><enddate>20160907</enddate><creator>KOU JIABAO</creator><creator>XU DIANGUO</creator><creator>HAN XIAO</creator><creator>GAO QIANG</creator><creator>LI WENSHUANG</creator><creator>ZHANG WANYING</creator><scope>EVB</scope></search><sort><creationdate>20160907</creationdate><title>Method for detecting position of rotor of electrically excited synchronous motor without sensor in whole process based on excitation current pulse response</title><author>KOU JIABAO ; XU DIANGUO ; HAN XIAO ; GAO QIANG ; LI WENSHUANG ; ZHANG WANYING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN105932913A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2016</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>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>KOU JIABAO</creatorcontrib><creatorcontrib>XU DIANGUO</creatorcontrib><creatorcontrib>HAN XIAO</creatorcontrib><creatorcontrib>GAO QIANG</creatorcontrib><creatorcontrib>LI WENSHUANG</creatorcontrib><creatorcontrib>ZHANG WANYING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KOU JIABAO</au><au>XU DIANGUO</au><au>HAN XIAO</au><au>GAO QIANG</au><au>LI WENSHUANG</au><au>ZHANG WANYING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for detecting position of rotor of electrically excited synchronous motor without sensor in whole process based on excitation current pulse response</title><date>2016-09-07</date><risdate>2016</risdate><abstract>The invention relates to a method for detecting the position of a rotor of an electrically excited synchronous motor without a sensor in a whole process based on excitation current pulse response, belonging to the field of control of motors. The problem that injection of a high-frequency signal from a stator side is limited by a frequency converter control method can be solved. The method disclosed by the invention comprises the following steps of: (1), adopting a triggering strategy of an excitation bridge circuit, such that a pulse signal having a fixed frequency is superposed on excitation current on the basis of a direct-current component, wherein the fixed frequency of the pulse signal is fh; (2), acquiring three-phase counter electromotive force line voltage of the motor, and extracting the pulse signal, the frequency of which is fh; (3), extracting envelope lines eAB_h, eBC_h and eCA_h of three-phase high-frequency signal induced electromotive force of the pulse signal, the frequency of which is fh; an</abstract><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 GENERATION |
| title | Method for detecting position of rotor of electrically excited synchronous motor without sensor in whole process based on excitation current pulse response |
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