GRID-CONNECTED ENERGY STORAGE SYSTEM

GRID-CONNECTED ENERGY STORAGE SYSTEM

The present invention relates to an energy storage system that reduces a ripple component in the system by controlling any two phases of a power switching element in an interleaved manner during a grid-connected operation through a three-phase power switching element. The grid-connected energy stora...

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Hauptverfasser: SEO HYORYONG, KIM EUNGHO, BYUNGKEUN YOON
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Sprache:eng ; kor
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APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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KIM EUNGHO
BYUNGKEUN YOON
description The present invention relates to an energy storage system that reduces a ripple component in the system by controlling any two phases of a power switching element in an interleaved manner during a grid-connected operation through a three-phase power switching element. The grid-connected energy storage system according to one embodiment of the present invention comprises: a grid outputting a three-phase AC voltage through a three-phase output terminal; a load connected in parallel to the three-phase output terminal to receive a three-phase AC voltage applied to the three-phase output terminal; a three-phase power switching element converting a DC voltage output from a DC voltage source into a three-phase AC voltage and outputting the three-phase AC voltage to the three-phase output terminal or converting the three-phase AC voltage output from the grid into a DC voltage and providing the DC voltage to the DC voltage source; and a control unit connecting any two phases of the output terminal among the three-phase output terminal and controlling the three-phase power switching element to operate as an interleaved converter. 본 발명은 3상 전력 스위칭 소자를 통해 계통 연계 동작 시, 어느 두 상의 전력 스위칭 소자를 인터리브드 방식으로 제어하여 시스템 내 리플 성분을 감소시키는 에너지 저장 시스템에 관한 것이다. 본 발명의 일 실시예에 따른 계통 연계형 에너지 저장 시스템은 3상 출력단을 통해 3상 교류 전압을 출력하는 계통, 상기 3상 출력단에 병렬로 연결되어 상기 3상 출력단에 인가되는 3상 교류 전압을 제공받는 부하, 직류 전압원에서 출력되는 직류 전압을 3상 교류 전압으로 변환하여 상기 3상 출력단으로 출력하거나 상기 계통으로부터 출력되는 3상 교류 전압을 직류 전압으로 변환하여 상기 직류 전압원에 제공하는 3상 전력 스위칭 소자 및 상기 3상 출력단 중 어느 두 상의 출력단을 연결하고, 상기 3상 전력 스위칭 소자가 인터리브드 컨버터(interleaved converter)로 동작하도록 제어하는 제어부를 포함하는 것을 특징으로 한다.
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fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_KR20210096488A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>KR20210096488A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_KR20210096488A3</originalsourceid><addsrcrecordid>eNrjZFBxD_J00XX29_NzdQ5xdVFw9XMNco9UCA7xD3J0d1UIjgwOcfXlYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXx3kFGBkaGBgaWZiYWFo7GxKkCABBRJAE</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>GRID-CONNECTED ENERGY STORAGE SYSTEM</title><source>esp@cenet</source><creator>SEO HYORYONG ; KIM EUNGHO ; BYUNGKEUN YOON</creator><creatorcontrib>SEO HYORYONG ; KIM EUNGHO ; BYUNGKEUN YOON</creatorcontrib><description>The present invention relates to an energy storage system that reduces a ripple component in the system by controlling any two phases of a power switching element in an interleaved manner during a grid-connected operation through a three-phase power switching element. The grid-connected energy storage system according to one embodiment of the present invention comprises: a grid outputting a three-phase AC voltage through a three-phase output terminal; a load connected in parallel to the three-phase output terminal to receive a three-phase AC voltage applied to the three-phase output terminal; a three-phase power switching element converting a DC voltage output from a DC voltage source into a three-phase AC voltage and outputting the three-phase AC voltage to the three-phase output terminal or converting the three-phase AC voltage output from the grid into a DC voltage and providing the DC voltage to the DC voltage source; and a control unit connecting any two phases of the output terminal among the three-phase output terminal and controlling the three-phase power switching element to operate as an interleaved converter. 본 발명은 3상 전력 스위칭 소자를 통해 계통 연계 동작 시, 어느 두 상의 전력 스위칭 소자를 인터리브드 방식으로 제어하여 시스템 내 리플 성분을 감소시키는 에너지 저장 시스템에 관한 것이다. 본 발명의 일 실시예에 따른 계통 연계형 에너지 저장 시스템은 3상 출력단을 통해 3상 교류 전압을 출력하는 계통, 상기 3상 출력단에 병렬로 연결되어 상기 3상 출력단에 인가되는 3상 교류 전압을 제공받는 부하, 직류 전압원에서 출력되는 직류 전압을 3상 교류 전압으로 변환하여 상기 3상 출력단으로 출력하거나 상기 계통으로부터 출력되는 3상 교류 전압을 직류 전압으로 변환하여 상기 직류 전압원에 제공하는 3상 전력 스위칭 소자 및 상기 3상 출력단 중 어느 두 상의 출력단을 연결하고, 상기 3상 전력 스위칭 소자가 인터리브드 컨버터(interleaved converter)로 동작하도록 제어하는 제어부를 포함하는 것을 특징으로 한다.</description><language>eng ; kor</language><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONTROL OR REGULATION THEREOF ; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; SYSTEMS FOR STORING ELECTRIC ENERGY</subject><creationdate>2021</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&amp;date=20210805&amp;DB=EPODOC&amp;CC=KR&amp;NR=20210096488A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20210805&amp;DB=EPODOC&amp;CC=KR&amp;NR=20210096488A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SEO HYORYONG</creatorcontrib><creatorcontrib>KIM EUNGHO</creatorcontrib><creatorcontrib>BYUNGKEUN YOON</creatorcontrib><title>GRID-CONNECTED ENERGY STORAGE SYSTEM</title><description>The present invention relates to an energy storage system that reduces a ripple component in the system by controlling any two phases of a power switching element in an interleaved manner during a grid-connected operation through a three-phase power switching element. The grid-connected energy storage system according to one embodiment of the present invention comprises: a grid outputting a three-phase AC voltage through a three-phase output terminal; a load connected in parallel to the three-phase output terminal to receive a three-phase AC voltage applied to the three-phase output terminal; a three-phase power switching element converting a DC voltage output from a DC voltage source into a three-phase AC voltage and outputting the three-phase AC voltage to the three-phase output terminal or converting the three-phase AC voltage output from the grid into a DC voltage and providing the DC voltage to the DC voltage source; and a control unit connecting any two phases of the output terminal among the three-phase output terminal and controlling the three-phase power switching element to operate as an interleaved converter. 본 발명은 3상 전력 스위칭 소자를 통해 계통 연계 동작 시, 어느 두 상의 전력 스위칭 소자를 인터리브드 방식으로 제어하여 시스템 내 리플 성분을 감소시키는 에너지 저장 시스템에 관한 것이다. 본 발명의 일 실시예에 따른 계통 연계형 에너지 저장 시스템은 3상 출력단을 통해 3상 교류 전압을 출력하는 계통, 상기 3상 출력단에 병렬로 연결되어 상기 3상 출력단에 인가되는 3상 교류 전압을 제공받는 부하, 직류 전압원에서 출력되는 직류 전압을 3상 교류 전압으로 변환하여 상기 3상 출력단으로 출력하거나 상기 계통으로부터 출력되는 3상 교류 전압을 직류 전압으로 변환하여 상기 직류 전압원에 제공하는 3상 전력 스위칭 소자 및 상기 3상 출력단 중 어느 두 상의 출력단을 연결하고, 상기 3상 전력 스위칭 소자가 인터리브드 컨버터(interleaved converter)로 동작하도록 제어하는 제어부를 포함하는 것을 특징으로 한다.</description><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS</subject><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</subject><subject>CONTROL OR REGULATION THEREOF</subject><subject>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>SYSTEMS FOR STORING ELECTRIC ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFBxD_J00XX29_NzdQ5xdVFw9XMNco9UCA7xD3J0d1UIjgwOcfXlYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXx3kFGBkaGBgaWZiYWFo7GxKkCABBRJAE</recordid><startdate>20210805</startdate><enddate>20210805</enddate><creator>SEO HYORYONG</creator><creator>KIM EUNGHO</creator><creator>BYUNGKEUN YOON</creator><scope>EVB</scope></search><sort><creationdate>20210805</creationdate><title>GRID-CONNECTED ENERGY STORAGE SYSTEM</title><author>SEO HYORYONG ; KIM EUNGHO ; BYUNGKEUN YOON</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_KR20210096488A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; kor</language><creationdate>2021</creationdate><topic>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS</topic><topic>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</topic><topic>CONTROL OR REGULATION THEREOF</topic><topic>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>SYSTEMS FOR STORING ELECTRIC ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>SEO HYORYONG</creatorcontrib><creatorcontrib>KIM EUNGHO</creatorcontrib><creatorcontrib>BYUNGKEUN YOON</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SEO HYORYONG</au><au>KIM EUNGHO</au><au>BYUNGKEUN YOON</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>GRID-CONNECTED ENERGY STORAGE SYSTEM</title><date>2021-08-05</date><risdate>2021</risdate><abstract>The present invention relates to an energy storage system that reduces a ripple component in the system by controlling any two phases of a power switching element in an interleaved manner during a grid-connected operation through a three-phase power switching element. The grid-connected energy storage system according to one embodiment of the present invention comprises: a grid outputting a three-phase AC voltage through a three-phase output terminal; a load connected in parallel to the three-phase output terminal to receive a three-phase AC voltage applied to the three-phase output terminal; a three-phase power switching element converting a DC voltage output from a DC voltage source into a three-phase AC voltage and outputting the three-phase AC voltage to the three-phase output terminal or converting the three-phase AC voltage output from the grid into a DC voltage and providing the DC voltage to the DC voltage source; and a control unit connecting any two phases of the output terminal among the three-phase output terminal and controlling the three-phase power switching element to operate as an interleaved converter. 본 발명은 3상 전력 스위칭 소자를 통해 계통 연계 동작 시, 어느 두 상의 전력 스위칭 소자를 인터리브드 방식으로 제어하여 시스템 내 리플 성분을 감소시키는 에너지 저장 시스템에 관한 것이다. 본 발명의 일 실시예에 따른 계통 연계형 에너지 저장 시스템은 3상 출력단을 통해 3상 교류 전압을 출력하는 계통, 상기 3상 출력단에 병렬로 연결되어 상기 3상 출력단에 인가되는 3상 교류 전압을 제공받는 부하, 직류 전압원에서 출력되는 직류 전압을 3상 교류 전압으로 변환하여 상기 3상 출력단으로 출력하거나 상기 계통으로부터 출력되는 3상 교류 전압을 직류 전압으로 변환하여 상기 직류 전압원에 제공하는 3상 전력 스위칭 소자 및 상기 3상 출력단 중 어느 두 상의 출력단을 연결하고, 상기 3상 전력 스위칭 소자가 인터리브드 컨버터(interleaved converter)로 동작하도록 제어하는 제어부를 포함하는 것을 특징으로 한다.</abstract><oa>free_for_read</oa></addata></record>
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subjects APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
title GRID-CONNECTED ENERGY STORAGE SYSTEM
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