POWER CONVERSION DEVICE, CONTROL METHOD, AND POWER SYSTEM USING THE SAME
To consume a regenerative power early when an abnormality occurs in an AC machine, reduce the stopping time of the AC machine, and achieve energy saving.SOLUTION: A power conversion device comprises: an inverter circuit that can convert a DC power supplied to a DC terminal into an AC power and suppl...
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| creator | DAI XINHUI |
| description | To consume a regenerative power early when an abnormality occurs in an AC machine, reduce the stopping time of the AC machine, and achieve energy saving.SOLUTION: A power conversion device comprises: an inverter circuit that can convert a DC power supplied to a DC terminal into an AC power and supply the AC power to an AC machine and can convert a regenerative power generated in the AC machine into a DC power and supply the DC power to the DC terminal; a dynamic brake circuit that can short circuit an AC terminal connected to the AC machine in the inverter circuit with a first resistance to brake the AC machine; a regenerative brake circuit can short circuit the DC terminal in the inverter circuit with a second resistance to brake the AC machine; and a control unit. When applying a brake to the AC machine with the dynamic brake circuit, if a predetermined first condition is satisfied, the control unit further applies a brake to the AC machine with the regenerative brake circuit.SELECTED DRAWING: Figure 2
【課題】交流機で異常が発生した場合に、早期に回生電力を消費し、交流機の停止時間を短縮でき、かつ、省エネルギーを達成する。【解決手段】電力変換装置は、直流端子に供給される直流電力を交流電力に変換して交流機に供給するとともに、交流機で発生した回生電力を直流電力に変換して直流端子へ供給可能なインバータ回路と、インバータ回路の交流機に接続される交流端子を第１の抵抗により短絡することで交流機を制動可能なダイナミックブレーキ回路と、インバータ回路の直流端子を第２の抵抗により短絡することで交流機を制動可能な回生ブレーキ回路と、制御部と、を備え、ダイナミックブレーキ回路により交流機に制動を加えるときに、所定の第１条件が充足されている場合にさらに回生ブレーキ回路により交流機に制動を加える。【選択図】図２ |
| format | Patent |
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【課題】交流機で異常が発生した場合に、早期に回生電力を消費し、交流機の停止時間を短縮でき、かつ、省エネルギーを達成する。【解決手段】電力変換装置は、直流端子に供給される直流電力を交流電力に変換して交流機に供給するとともに、交流機で発生した回生電力を直流電力に変換して直流端子へ供給可能なインバータ回路と、インバータ回路の交流機に接続される交流端子を第１の抵抗により短絡することで交流機を制動可能なダイナミックブレーキ回路と、インバータ回路の直流端子を第２の抵抗により短絡することで交流機を制動可能な回生ブレーキ回路と、制御部と、を備え、ダイナミックブレーキ回路により交流機に制動を加えるときに、所定の第１条件が充足されている場合にさらに回生ブレーキ回路により交流機に制動を加える。【選択図】図２</description><language>eng ; jpn</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>2022</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=20220929&DB=EPODOC&CC=JP&NR=2022141530A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220929&DB=EPODOC&CC=JP&NR=2022141530A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>DAI XINHUI</creatorcontrib><title>POWER CONVERSION DEVICE, CONTROL METHOD, AND POWER SYSTEM USING THE SAME</title><description>To consume a regenerative power early when an abnormality occurs in an AC machine, reduce the stopping time of the AC machine, and achieve energy saving.SOLUTION: A power conversion device comprises: an inverter circuit that can convert a DC power supplied to a DC terminal into an AC power and supply the AC power to an AC machine and can convert a regenerative power generated in the AC machine into a DC power and supply the DC power to the DC terminal; a dynamic brake circuit that can short circuit an AC terminal connected to the AC machine in the inverter circuit with a first resistance to brake the AC machine; a regenerative brake circuit can short circuit the DC terminal in the inverter circuit with a second resistance to brake the AC machine; and a control unit. When applying a brake to the AC machine with the dynamic brake circuit, if a predetermined first condition is satisfied, the control unit further applies a brake to the AC machine with the regenerative brake circuit.SELECTED DRAWING: Figure 2
【課題】交流機で異常が発生した場合に、早期に回生電力を消費し、交流機の停止時間を短縮でき、かつ、省エネルギーを達成する。【解決手段】電力変換装置は、直流端子に供給される直流電力を交流電力に変換して交流機に供給するとともに、交流機で発生した回生電力を直流電力に変換して直流端子へ供給可能なインバータ回路と、インバータ回路の交流機に接続される交流端子を第１の抵抗により短絡することで交流機を制動可能なダイナミックブレーキ回路と、インバータ回路の直流端子を第２の抵抗により短絡することで交流機を制動可能な回生ブレーキ回路と、制御部と、を備え、ダイナミックブレーキ回路により交流機に制動を加えるときに、所定の第１条件が充足されている場合にさらに回生ブレーキ回路により交流機に制動を加える。【選択図】図２</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>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPAI8A93DVJw9vcLcw0K9vT3U3BxDfN0dtUBCYUE-fso-LqGePi76Cg4-rkoQBQHRwaHuPoqhAZ7-rkrhHi4KgQ7-rryMLCmJeYUp_JCaW4GJTfXEGcP3dSC_PjU4oLE5NS81JJ4rwAjAyMjQxNDU2MDR2OiFAEAWDItGg</recordid><startdate>20220929</startdate><enddate>20220929</enddate><creator>DAI XINHUI</creator><scope>EVB</scope></search><sort><creationdate>20220929</creationdate><title>POWER CONVERSION DEVICE, CONTROL METHOD, AND POWER SYSTEM USING THE SAME</title><author>DAI XINHUI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2022141530A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2022</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>DAI XINHUI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>DAI XINHUI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>POWER CONVERSION DEVICE, CONTROL METHOD, AND POWER SYSTEM USING THE SAME</title><date>2022-09-29</date><risdate>2022</risdate><abstract>To consume a regenerative power early when an abnormality occurs in an AC machine, reduce the stopping time of the AC machine, and achieve energy saving.SOLUTION: A power conversion device comprises: an inverter circuit that can convert a DC power supplied to a DC terminal into an AC power and supply the AC power to an AC machine and can convert a regenerative power generated in the AC machine into a DC power and supply the DC power to the DC terminal; a dynamic brake circuit that can short circuit an AC terminal connected to the AC machine in the inverter circuit with a first resistance to brake the AC machine; a regenerative brake circuit can short circuit the DC terminal in the inverter circuit with a second resistance to brake the AC machine; and a control unit. When applying a brake to the AC machine with the dynamic brake circuit, if a predetermined first condition is satisfied, the control unit further applies a brake to the AC machine with the regenerative brake circuit.SELECTED DRAWING: Figure 2
【課題】交流機で異常が発生した場合に、早期に回生電力を消費し、交流機の停止時間を短縮でき、かつ、省エネルギーを達成する。【解決手段】電力変換装置は、直流端子に供給される直流電力を交流電力に変換して交流機に供給するとともに、交流機で発生した回生電力を直流電力に変換して直流端子へ供給可能なインバータ回路と、インバータ回路の交流機に接続される交流端子を第１の抵抗により短絡することで交流機を制動可能なダイナミックブレーキ回路と、インバータ回路の直流端子を第２の抵抗により短絡することで交流機を制動可能な回生ブレーキ回路と、制御部と、を備え、ダイナミックブレーキ回路により交流機に制動を加えるときに、所定の第１条件が充足されている場合にさらに回生ブレーキ回路により交流機に制動を加える。【選択図】図２</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 | POWER CONVERSION DEVICE, CONTROL METHOD, AND POWER SYSTEM USING THE SAME |
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