JP2017022815A - 電力変換システム - Google Patents
電力変換システム Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1588—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
【解決手段】無停電電源システムは、複数の無停電電源装置U1〜U3を備え、各無停電電源装置Uは、順変換回路1、逆変換回路2、直流正母線L1、直流負母線L2、およびコンデンサC1を含む。無停電電源システムは、2つの無停電電源装置Un,U(n+1)の母線L1間に接続されたヒューズFn1と、2台の無停電電源装置U1,U2の母線L2間に接続されたヒューズFn2とを備える。複数組の母線L1,L2間の直流電圧を均一にし、横流を小さく抑制できる。1台の無停電電源装置が故障して2組の母線L1,L2間に過電流が流れてもヒューズF1n,Fn2によって故障範囲を狭く限定できる。
【選択図】図1
Description
図1は、この発明の実施の形態1による無停電電源システム(電力変換システム)の構成を示す回路ブロック図である。図1において、この無停電電源システムは、交流電源51と負荷52の間に並列接続された複数台(図では、3台)の無停電電源装置(電力変換装置)U1〜U3を備える。3台の無停電電源装置U1〜U3に共通に1つのバッテリ53(電力貯蔵装置)が設けられる。交流電源51は、商用周波数の三相交流電力を無停電電源装置U1〜U3に供給する。負荷52は、無停電電源装置U1〜U3から供給される商用周波数の三相交流電力によって駆動される。バッテリ53は、直流電力を蓄える。バッテリ53の代わりにコンデンサが設けられていても構わない。
図5は、この発明の実施の形態2による無停電電源システムの構成を示す回路ブロック図であって、図1と対比される図である。図5において、この無停電電源システムは、交流電源51と負荷52の間に並列接続される複数台(図では、3台)の無停電電源装置(電力変換装置)U11〜U13を備える。3台の無停電電源装置U11〜U13に共通に1つのバッテリ53(電力貯蔵装置)が設けられる。交流電源51は、商用周波数の三相交流電力を無停電電源装置U11〜U13に供給する。負荷52は、無停電電源装置U11〜U13から供給される商用周波数の三相交流電力によって駆動される。バッテリ53は、直流電力を蓄える。バッテリ53の代わりにコンデンサが設けられていても構わない。
Claims (8)
- 電力変換システムであって、
負荷に対して並列接続される第1〜第Nの電力変換装置と、
第1〜第(N−1)のヒューズとを備え、Nは2以上の整数であり、
各電力変換装置は、
交流電圧を直流電圧に変換する順変換回路と、
直流電圧を交流電圧に変換して前記負荷に与える逆変換回路と、
前記順変換回路から前記逆変換回路に直流電圧を供給するための直流母線と、
前記直流母線に接続され、直流電圧を平滑化させるコンデンサとを含み、
第nのヒューズは、第nの電力変換装置の前記直流母線と第(n+1)の電力変換装置の前記直流母線との間に接続され、nは1以上で(N−1)以下の整数である、電力変換システム。 - 前記第nのヒューズは、前記第nまたは第(n+1)の電力変換装置が故障した場合に、前記第nの電力変換装置の前記直流母線と前記第(n+1)の電力変換装置の前記直流母線との間に流れる電流によってブローされる、請求項1に記載の電力変換システム。
- 前記第nのヒューズの定格遮断電流値は、前記第nおよび第(n+1)の電力変換装置の各々の定格電流値よりも小さい、請求項1または請求項2に記載の電力変換システム。
- さらに、それぞれ前記第1〜第(N−1)のヒューズに対応して設けられた第1〜第(N−1)の配線を備え、
前記第nのヒューズは、前記第nの電力変換装置の前記直流母線と前記第(n+1)の電力変換装置の前記直流母線との間に第nの配線によって接続され、
前記第nの配線の許容電流値は前記直流母線の許容電流値よりも小さい、請求項1から請求項3までのいずれか1項に記載の電力変換システム。 - 各電力変換装置は2本の直流母線を含み、
前記コンデンサは前記2本の直流母線の間に接続され、
前記順変換回路は、直流電圧として正電圧および負電圧を生成し、生成した前記正電圧および前記負電圧をそれぞれ前記2本の直流母線を介して前記逆変換回路に与え、
前記逆変換回路は、前記正電圧および前記負電圧に基づいて交流電圧を生成し、生成した交流電圧を前記負荷に与え、
前記電力変換システムは2組の第1〜第(N−1)のヒューズを備え、
2本の第nのヒューズの一方端子は前記第nの電力変換装置の前記2本の直流母線にそれぞれ接続され、前記2本の第nのヒューズの他方端子は前記第(n+1)の電力変換装置の前記2本の直流母線にそれぞれ接続されている、請求項1に記載の電力変換システム。 - 各電力変換装置は3本の直流母線と2つのコンデンサを含み、
前記順変換回路は、直流電圧として正電圧、中性点電圧、および負電圧を生成し、生成した前記正電圧、前記中性点電圧、および前記負電圧をそれぞれ前記3本の直流母線を介して前記逆変換回路に与え、
前記逆変換回路は、前記正電圧、前記中性点電圧、および前記負電圧に基づいて交流電圧を生成し、生成した交流電圧を前記負荷に与え、
前記2つのコンデンサの一方電極は前記正電圧および前記中性点電圧を供給するための2本の直流母線にそれぞれ接続され、前記2つのコンデンサの他方電極は前記中性点電圧および前記負電圧を供給するための2本の直流母線にそれぞれ接続され、
前記電力変換システムは3組の第1〜第(N−1)のヒューズを備え、
3つの第nのヒューズの一方端子は前記第nの電力変換装置の前記3本の直流母線にそれぞれ接続され、前記3つの第nのヒューズの他方端子は前記第(n+1)の電力変換装置の前記3本の直流母線にそれぞれ接続されている、請求項1に記載の電力変換システム。 - 交流電源から交流電力が供給されている通常時は、前記交流電源からの交流電力が前記順変換回路によって直流電力に変換され、その直流電力が電力貯蔵装置に供給されるとともに前記逆変換回路によって交流電力に変換されて前記負荷に供給され、
前記交流電源からの交流電力の供給が停止された停電時は、前記電力貯蔵装置の直流電力が前記逆変換回路によって交流電力に変換されて前記負荷に供給される、請求項1から請求項6までのいずれか1項に記載の電力変換システム。 - 各前記電力変換装置は、さらに、前記通常時は、前記順変換回路によって生成された直流電力を前記電力貯蔵装置に供給し、前記停電時は、前記電力貯蔵装置の直流電力を前記逆変換回路に供給する双方向チョッパを含む、請求項7に記載の電力変換システム。
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JP2018007377A (ja) * | 2016-06-30 | 2018-01-11 | 東芝三菱電機産業システム株式会社 | 電力変換システム |
WO2019082297A1 (ja) * | 2017-10-25 | 2019-05-02 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
WO2019097605A1 (ja) * | 2017-11-15 | 2019-05-23 | 東芝三菱電機産業システム株式会社 | 電力変換システム |
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