POWER FLUCTUATION MITIGATION SYSTEM

To provide a power fluctuation mitigation system that promptly suppresses and mitigates power fluctuation of a power system caused by sudden load change or the like.SOLUTION: The power supply system for supplying power to an AC load 70 by an AC power supply unit 40 having a first converter 45 and an...

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Hauptverfasser: YUTANI KOJI, TSUKAMOTO TOSHIYUKI
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TSUKAMOTO TOSHIYUKI
description To provide a power fluctuation mitigation system that promptly suppresses and mitigates power fluctuation of a power system caused by sudden load change or the like.SOLUTION: The power supply system for supplying power to an AC load 70 by an AC power supply unit 40 having a first converter 45 and an inverter 46 connected to an output side thereof via a DC intermediate capacitor 65 includes: a second converter 34 connected to the AC power supply; and a power storage device 63 chargeable by DC output power. A bidirectional DC/DC converter 51 connected between the DC intermediate capacitor 65 and the storage device 63 is included. The DC/DC converter 51 and the power storage device 63 constitute a power fluctuation mitigation device 80. At a time of an output fluctuation of the AC power supply unit 40 due to a sudden change of the AC load 70, DC output power obtained by starting the DC/DC converter 51 is supplied to the DC intermediate capacitor 65 as compensation power.SELECTED DRAWING: Figure 1 【課題】負荷急変等に起因する電力系統の電力変動を速やかに抑制し、緩和するようにした電力変動緩和システムを提供する。【解決手段】第1のコンバータ45と、その出力側に直流中間コンデンサ65を介して接続されたインバータ46と、を有する交流給電部40により、交流負荷70に給電する電源システムであって、交流電源に接続された第2のコンバータ34と、その直流出力電力により充電可能な蓄電装置63と、を備えた電源システムにおいて、直流中間コンデンサ65と蓄電装置63との間に接続された双方向型のDC/DCコンバータ51を備え、このDC/DCコンバータ51と蓄電装置63とにより電力変動緩和装置80を構成すると共に、交流負荷70の急変による交流給電部40の出力変動時に、DC/DCコンバータ51を起動して得た直流出力電力を補償電力として直流中間コンデンサ65に供給する。【選択図】図1
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A bidirectional DC/DC converter 51 connected between the DC intermediate capacitor 65 and the storage device 63 is included. The DC/DC converter 51 and the power storage device 63 constitute a power fluctuation mitigation device 80. At a time of an output fluctuation of the AC power supply unit 40 due to a sudden change of the AC load 70, DC output power obtained by starting the DC/DC converter 51 is supplied to the DC intermediate capacitor 65 as compensation power.SELECTED DRAWING: Figure 1 【課題】負荷急変等に起因する電力系統の電力変動を速やかに抑制し、緩和するようにした電力変動緩和システムを提供する。【解決手段】第1のコンバータ45と、その出力側に直流中間コンデンサ65を介して接続されたインバータ46と、を有する交流給電部40により、交流負荷70に給電する電源システムであって、交流電源に接続された第2のコンバータ34と、その直流出力電力により充電可能な蓄電装置63と、を備えた電源システムにおいて、直流中間コンデンサ65と蓄電装置63との間に接続された双方向型のDC/DCコンバータ51を備え、このDC/DCコンバータ51と蓄電装置63とにより電力変動緩和装置80を構成すると共に、交流負荷70の急変による交流給電部40の出力変動時に、DC/DCコンバータ51を起動して得た直流出力電力を補償電力として直流中間コンデンサ65に供給する。【選択図】図1</description><language>eng ; jpn</language><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; SYSTEMS FOR STORING ELECTRIC ENERGY</subject><creationdate>2019</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=20190307&amp;DB=EPODOC&amp;CC=JP&amp;NR=2019037089A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20190307&amp;DB=EPODOC&amp;CC=JP&amp;NR=2019037089A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YUTANI KOJI</creatorcontrib><creatorcontrib>TSUKAMOTO TOSHIYUKI</creatorcontrib><title>POWER FLUCTUATION MITIGATION SYSTEM</title><description>To provide a power fluctuation mitigation system that promptly suppresses and mitigates power fluctuation of a power system caused by sudden load change or the like.SOLUTION: The power supply system for supplying power to an AC load 70 by an AC power supply unit 40 having a first converter 45 and an inverter 46 connected to an output side thereof via a DC intermediate capacitor 65 includes: a second converter 34 connected to the AC power supply; and a power storage device 63 chargeable by DC output power. A bidirectional DC/DC converter 51 connected between the DC intermediate capacitor 65 and the storage device 63 is included. The DC/DC converter 51 and the power storage device 63 constitute a power fluctuation mitigation device 80. 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A bidirectional DC/DC converter 51 connected between the DC intermediate capacitor 65 and the storage device 63 is included. The DC/DC converter 51 and the power storage device 63 constitute a power fluctuation mitigation device 80. At a time of an output fluctuation of the AC power supply unit 40 due to a sudden change of the AC load 70, DC output power obtained by starting the DC/DC converter 51 is supplied to the DC intermediate capacitor 65 as compensation power.SELECTED DRAWING: Figure 1 【課題】負荷急変等に起因する電力系統の電力変動を速やかに抑制し、緩和するようにした電力変動緩和システムを提供する。【解決手段】第1のコンバータ45と、その出力側に直流中間コンデンサ65を介して接続されたインバータ46と、を有する交流給電部40により、交流負荷70に給電する電源システムであって、交流電源に接続された第2のコンバータ34と、その直流出力電力により充電可能な蓄電装置63と、を備えた電源システムにおいて、直流中間コンデンサ65と蓄電装置63との間に接続された双方向型のDC/DCコンバータ51を備え、このDC/DCコンバータ51と蓄電装置63とにより電力変動緩和装置80を構成すると共に、交流負荷70の急変による交流給電部40の出力変動時に、DC/DCコンバータ51を起動して得た直流出力電力を補償電力として直流中間コンデンサ65に供給する。【選択図】図1</abstract><oa>free_for_read</oa></addata></record>
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subjects CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
title POWER FLUCTUATION MITIGATION SYSTEM
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