JP6838170B2 - 電力変換システム - Google Patents
電力変換システム Download PDFInfo
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- JP6838170B2 JP6838170B2 JP2019559965A JP2019559965A JP6838170B2 JP 6838170 B2 JP6838170 B2 JP 6838170B2 JP 2019559965 A JP2019559965 A JP 2019559965A JP 2019559965 A JP2019559965 A JP 2019559965A JP 6838170 B2 JP6838170 B2 JP 6838170B2
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- 238000006243 chemical reaction Methods 0.000 title claims description 54
- 239000003990 capacitor Substances 0.000 claims description 47
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- 239000004065 semiconductor Substances 0.000 description 25
- 238000010586 diagram Methods 0.000 description 8
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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
- 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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
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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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
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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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
-
- 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
- H02M7/493—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 the static converters being arranged for operation in parallel
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inverter Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Description
図1は、本発明の実施の形態による電力変換システムの構成を示す回路ブロック図である。本発明の実施の形態による電力変換システムは、たとえば、複数台の無停電電源装置を並列に接続して負荷に給電する無停電電源システムに適用され得る。
図2は、図1に示したコンバータ1およびインバータ2の各々に含まれる電力変換回路の構成を示す回路図である。
交流スイッチS1〜S3の各々は、トランジスタQ7,Q8およびダイオードD7,D8を含む。トランジスタQ7,Q8の各々は、たとえばIGBT(Insulated Gate Bipolar Transistor)である。交流スイッチS1〜S3のトランジスタQ7のエミッタはそれぞれノードN1〜N3に接続され、交流スイッチS1〜S3のトランジスタQ8のエミッタはともに直流端子T7に接続される。交流スイッチS1〜S3の各々において、トランジスタQ7,Q8のコレクタは互いに接続される。ダイオードD7,D8は、それぞれトランジスタQ7,Q8に逆並列に接続される。
図3は、図1に示した双方向チョッパ3の構成を示す回路図である。
図1に戻って、無停電電源システムは、さらに、複数(図1ではn本)の配線部W1〜Wn、および複数(図1ではn個)のヒューズ部FS1〜FSnを備える。配線部Wk(1≦k≦n)は「第kの配線部」に対応し、ヒューズ部FSkは「第kのヒューズ部」に対応する。
図1に示すように、無停電電源システムは、さらに、予備充電回路5を備える。図1の例では、予備充電回路5は、交流電源51と第1の無停電電源装置U1の直流母線L1,L2との間に接続されている。交流電源51と予備充電回路5とを繋ぐ接続線上には開閉器7が設けられる。開閉器7は図示しない制御装置からの制御信号に応答してオン/オフされることにより、交流電源51と予備充電回路5との間の電力供給経路を導通/遮断する。
図4を参照して、予備充電回路5は、交流端子T31〜T33、直流端子T34,T35、抵抗素子R1〜R3、および半導体モジュール25を含む。
図1に示すように、無停電電源システムは、さらに、電圧検出器6を備える。図1の例では、電圧検出器6は、第nの無停電電源装置Unの直流母線L1〜L3に接続されている。電圧検出器6は、無停電電源装置Unの直流母線L1〜L3の電圧を検出すると、その検出値を示す信号を無停電電源装置Unの制御回路4に出力する。
次に、本実施の形態による無停電電源システムの動作について説明する。
次に、本実施の形態による電力変換システムの作用効果について説明する。
Claims (7)
- 負荷に対して並列に接続される第1〜第n(nは2以上の整数)の電力変換装置と、
第1〜第nの配線部と、
前記第1〜第nの配線部にそれぞれ設けられた第1〜第nのヒューズとを備え、
前記第1〜第nの電力変換装置の各々は、
交流電圧を直流電圧に変換するコンバータと、
直流電圧を交流電圧に変換して前記負荷に供給するインバータと、
前記コンバータから前記インバータ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i(1≦i≦n−1)の配線部は、第iの電力変換装置の前記直流母線と、第(i+1)の電力変換装置の前記直流母線との間に接続され、
前記第nの配線部は、前記第nの電力変換装置の前記直流母線と、前記第1の電力変換装置の前記直流母線との間に接続される、電力変換システム。 - 前記第1〜第nの電力変換装置のうちいずれか1つの電力変換装置の前記直流母線に接続され、前記直流母線の直流電圧を検出する電圧検出器をさらに備える、請求項1に記載の電力変換システム。
- 前記第1〜第nの電力変換装置のうちいずれか1つの電力変換装置の前記直流母線に接続され、前記電力変換システムの起動に備えて予め前記第1から前記第nの電力変換装置の各々の前記コンデンサを充電するための予備充電回路をさらに備える、請求項1または2に記載の電力変換システム。
- 前記第iのヒューズは、前記第iまたは第(i+1)の電力変換装置が故障した場合に、前記第iの電力変換装置の前記直流母線と前記第(i+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溶断される、請求項1から3のいずれか1項に記載の電力変換システム。
- 前記第iのヒューズの定格遮断電流値は、前記第iまたは第(i+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4に記載の電力変換システム。
- 前記第iの配線部の許容電流値は、前記直流母線の許容電流値よりも小さい、請求項1から5のいずれか1項に記載の電力変換システム。
- 前記コンバータは、交流電源から供給される交流電力を直流電力に変換するように構成され、
前記第1〜第nの電力変換装置の各々は、
前記直流母線および電力貯蔵装置の間に接続され、前記交流電源から交流電力が供給されている通常時は、前記コンバータ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を前記インバータに供給するように構成された双方向チョッパをさらに含む、請求項1から6のいずれか1項に記載の電力変換システム。
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US11424693B2 (en) * | 2018-04-27 | 2022-08-23 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Three-level power conversion device, three-level power conversion device control method, and storage medium |
CN210668555U (zh) * | 2019-09-30 | 2020-06-02 | 潍柴动力股份有限公司 | 电堆模组故障检测系统 |
US11404966B2 (en) * | 2020-07-02 | 2022-08-02 | Delta Electronics, Inc. | Isolated multi-phase DC/DC converter with reduced quantity of blocking capacitors |
EP4304070A1 (en) * | 2021-03-05 | 2024-01-10 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power converter |
US11374501B1 (en) * | 2021-03-26 | 2022-06-28 | Product Development Associates, Inc. | Phase balancer including power conversion circuits |
KR102539725B1 (ko) * | 2021-09-07 | 2023-06-05 | 광주과학기술원 | 3상 인버터 병렬 운전 시스템 및 직류단 전압 보정 방법 |
CN115642679A (zh) * | 2022-10-26 | 2023-01-24 | 华为数字能源技术有限公司 | 一种充电装置、充电桩及充电系统 |
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JP2007074823A (ja) | 2005-09-07 | 2007-03-22 | Fuji Electric Systems Co Ltd | 電力変換装置 |
CA2637376C (en) * | 2006-01-17 | 2012-11-27 | Abb Schweiz Ag | Fuel/electric drive system |
CN2909688Y (zh) * | 2006-04-19 | 2007-06-06 | 上海海得控制系统股份有限公司 | 低谐波交流电变频设备 |
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2017
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JPWO2019123608A1 (ja) | 2020-04-16 |
KR20200098653A (ko) | 2020-08-20 |
US11368101B2 (en) | 2022-06-21 |
KR102421840B1 (ko) | 2022-07-15 |
CN111480280A (zh) | 2020-07-31 |
CN111480280B (zh) | 2023-01-10 |
US20200336077A1 (en) | 2020-10-22 |
EP3731368A1 (en) | 2020-10-28 |
WO2019123608A1 (ja) | 2019-06-27 |
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