JPWO2018185812A1 - 電力変換装置 - Google Patents
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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
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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
-
- 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
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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
- 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
- H02M7/53871—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 with automatic control of output voltage or current
-
- 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
- H02M7/539—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 with automatic control of output wave form or frequency
- H02M7/5395—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 with automatic control of output wave form or frequency by pulse-width modulation
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
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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
- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
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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
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- Engineering & Computer Science (AREA)
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- Emergency Management (AREA)
- Inverter Devices (AREA)
Abstract
Description
図1は、この発明の実施の形態1による無停電電源装置1の構成を示す回路ブロック図である。この無停電電源装置1は、商用交流電源21からの三相交流電力を直流電力に一旦変換し、その直流電力を三相交流電力に変換して負荷24に供給するものである。図1では、図面および説明の簡単化のため、三相(U相、V相、W相)のうちの一相(たとえばU相)に対応する部分の回路のみが示されている。
図6は、この発明の実施の形態2による無停電電源装置のゲート制御回路50の構成を示す回路ブロック図であって、図3と対比される図である。図6において、ゲート制御回路50は、ゲート制御回路37の判定器45(図3)を判定器51で置換したものである。
図7は、この発明の実施の形態3による無停電電源装置のゲート制御回路55の構成を示す回路ブロック図であって、図3と対比される図である。図7において、ゲート制御回路55は、ゲート制御回路37から判定器45(図3)を除去したものである。スイッチ46は、操作部17(図1)からの信号SEによって制御される。
実施の形態1では、負荷電流ILが所定値Icよりも小さい場合(すなわち負荷24が軽負荷である場合)には、比較的低い周波数fLを有し、パルス幅が固定されたゲート信号Au,Buを生成する省電力運転モードを実行することにより、無停電電源装置1の効率を高めた。しかし、実施の形態1の省電力運転モードではPWM制御を行なわないので、負荷24によっては交流出力電圧Voが参照交流電圧Vr(定格電圧)よりも低下する恐れがある。この実施の形態4では、この問題の解決が図られる。
図13は、この発明の実施の形態5による無停電電源装置の要部を示す回路ブロック図であって、図5と対比される図である。図13において、この無停電電源装置が実施の形態1の無停電電源装置1と異なる点は、コンバータ6、双方向チョッパ7、およびインバータ10がそれぞれコンバータ80、双方向チョッパ81、およびインバータ82と置換されている点である。
Claims (8)
- 複数の第1のスイッチング素子を含み、直流電力を商用周波数の交流電力に変換して負荷に供給する逆変換器と、
前記商用周波数よりも高い第1の周波数を有し、パルス幅が前記逆変換器の交流出力電圧に基づいて制御される第1のパルス信号列を生成する第1のモードと、前記商用周波数と前記第1の周波数との間の第2の周波数を有し、パルス幅が固定された第2のパルス信号列を生成する第2のモードとのうちの選択された方のモードを実行する第1の制御部とを備え、
前記複数の第1のスイッチング素子は、前記第1のモード時は前記第1のパルス信号列に基づいて制御され、前記第2のモード時は前記第2のパルス信号列に基づいて制御される、電力変換装置。 - 前記第1のモードは、前記電力変換装置の通常運転を行なう場合に選択され、
前記第2のモードは、負荷電流が第1の値よりも小さい場合、または前記負荷電流の単位時間当たりの変化量が第2の値よりも小さい場合において、前記複数の第1のスイッチング素子で発生するスイッチング損失を低減させるために選択される、請求項1に記載の電力変換装置。 - さらに、前記負荷電流を検出する電流検出器と、
前記電流検出器の検出結果に基づいて動作し、前記負荷電流が前記第1の値よりも大きい場合は前記第1のモードを選択し、前記負荷電流が前記第1の値よりも小さい場合は前記第2のモードを選択する選択部とを備える、請求項2に記載の電力変換装置。 - さらに、前記負荷電流を検出する電流検出器と、
前記電流検出器の検出結果に基づいて動作し、前記負荷電流の単位時間当たりの変化量が前記第2の値よりも大きい場合は前記第1のモードを選択し、前記負荷電流の単位時間当たりの変化量が前記第2の値よりも小さい場合は前記第2のモードを選択する選択部とを備える、請求項2に記載の電力変換装置。 - さらに、前記第1および第2のモードのうちの所望のモードを選択する選択部を備える、請求項2に記載の電力変換装置。
- 前記第1の制御部は、
前記商用周波数の正弦波信号と前記第1の周波数に応じた値の周波数を有する三角波信号との高低を比較し、比較結果に基づいて前記第1のパルス信号列を生成する第1の信号発生回路と、
前記第2のパルス信号列を生成する第2の信号発生回路と、
前記第1のモード時は前記第1のパルス信号列を選択し、前記第2のモード時は前記第2のパルス信号列を選択する切換回路とを含む、請求項1に記載の電力変換装置。 - さらに、複数の第2のスイッチング素子を含み、商用交流電源から供給される交流電力を直流電力に変換して前記逆変換器に与える順変換器と、
前記商用周波数よりも高い第3の周波数を有し、パルス幅が制御される第3のパルス信号列を生成する第2の制御部とを備え、
前記複数の第2のスイッチング素子は、前記第3のパルス信号列に基づいて制御され、
前記第1のパルス信号列のパルス幅は、前記逆変換器の交流出力電圧が参照交流電圧になるように制御され、
前記第2の制御部は、
前記第1のモード時は一定の参照直流電圧を出力し、前記第2のモード時は、前記逆変換器の交流出力電圧と前記参照交流電圧との偏差に応じた値の参照直流電圧を出力する電圧発生回路と、
前記順変換器の出力直流電圧が前記参照直流電圧になるようにパルス幅が制御される前記第3のパルス信号列を生成する信号発生回路とを含む、請求項1に記載の電力変換装置。 - 前記商用交流電源から交流電力が供給されている通常時は、前記順変換器によって生成された直流電力が前記逆変換器に供給されるとともに電力貯蔵装置に蓄えられ、
前記商用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器に供給される、請求項7に記載の電力変換装置。
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WO2019207772A1 (ja) * | 2018-04-27 | 2019-10-31 | 東芝三菱電機産業システム株式会社 | 3レベル電力変換装置、3レベル電力変換装置の制御方法、及び記憶媒体 |
US11929689B2 (en) * | 2019-09-13 | 2024-03-12 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power conversion device |
WO2021090393A1 (ja) * | 2019-11-06 | 2021-05-14 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
JP7160056B2 (ja) * | 2020-02-13 | 2022-10-25 | 株式会社デンソー | 電力変換器の制御回路 |
CN112202355B (zh) * | 2020-09-09 | 2024-03-15 | 惠州志顺电子实业有限公司 | 逆变器控制方法、控制装置、逆变器装置以及存储介质 |
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US7102340B1 (en) * | 2003-01-21 | 2006-09-05 | Microsemi Corporation | Dual-mode PFM boost converter |
JP4838233B2 (ja) * | 2004-03-12 | 2011-12-14 | エムケイエス インストゥルメンツ, インコーポレイテッド | スイッチング電源用の制御回路 |
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JP4591710B2 (ja) | 2006-10-04 | 2010-12-01 | サンケン電気株式会社 | 交流電源装置 |
TW200838140A (en) * | 2007-03-07 | 2008-09-16 | Advanced Analog Technology Inc | Switching circuit between PFM and PWM and the method thereof |
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JP6155935B2 (ja) | 2013-07-23 | 2017-07-05 | レシップホールディングス株式会社 | 電源装置 |
JP6262478B2 (ja) | 2013-09-13 | 2018-01-17 | ローム株式会社 | 電源回路およびその制御回路、電子機器 |
CN106329977B (zh) | 2015-07-03 | 2018-10-09 | 台达电子工业股份有限公司 | 逆变电路的控制方法 |
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US11005384B2 (en) | 2021-05-11 |
TWI660566B (zh) | 2019-05-21 |
JP6706390B2 (ja) | 2020-06-03 |
CN110521102A (zh) | 2019-11-29 |
US20200067417A1 (en) | 2020-02-27 |
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