JP3569456B2 - Hot standby uninterruptible power supply - Google Patents
Hot standby uninterruptible power supply Download PDFInfo
- Publication number
- JP3569456B2 JP3569456B2 JP35339998A JP35339998A JP3569456B2 JP 3569456 B2 JP3569456 B2 JP 3569456B2 JP 35339998 A JP35339998 A JP 35339998A JP 35339998 A JP35339998 A JP 35339998A JP 3569456 B2 JP3569456 B2 JP 3569456B2
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- JP
- Japan
- Prior art keywords
- power supply
- unit
- uninterruptible power
- ups
- hot standby
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、ホット・スタンバイ方式の無停電電源装置に関する。
【０００２】
【従来の技術】
図２に従来技術によるホット・スタンバイ方式の無停電電源装置の回路構成を示す。
交流入力電源に入力端子１０９を接続したＵＰＳ１０１は予備ユニットであって、蓄電池電源１０４とスイッチ素子１０３を備えたバイパス回路１０２によって構成している。また、交流入力電源に入力端子１１２を接続したＵＰＳ１０５は常用ユニットであって、蓄電池電源１０８とスイッチ素子１０６を備えたバイパス回路１０７によって構成しているが、バイパス回路１０７の入力端子１１１は予備ユニットのＵＰＳ１０１の出力端子１１０に接続してあり、常用ユニットのＵＰＳ１０５の入力端子１１２には接続していない。
上述したような回路構成によって、ＵＰＳ１０５を常用ユニット、ＵＰＳ１０１を予備ユニットとしてホット・スタンバイ方式の無停電電源装置を構成している。
【０００３】
平常時においては、常用ユニットのＵＰＳ１０５によって負荷に電力供給を行っているが、予備ユニットのＵＰＳ１０１も交流入力電源に無負荷状態において接続してある。
常用ユニットのＵＰＳ１０５を予備ユニットのＵＰＳ１０１に切り替える場合には、バイパス回路１０７に設けてあるスイッチ素子１０６をオンとしたうえでＵＰＳ１０５をオフとすると、予備ユニットのＵＰＳ１０１に負荷が自動的に切り替わる。
予備ユニットのＵＰＳ１０１を使用しない場合には、スイッチ素子１０３をオンとすることによってバイパス回路１０２を生かし、常用ユニットのＵＰＳ１０５のバイパス回路１０７を介して交流入力電力をそのまま負荷に供給する。
【０００４】
【発明が解決しようとする課題】
上述したように、従来技術によるホット・スタンバイ方式の無停電電源装置においては、構成回路の制約によって常用ユニットと予備ユニットが固定されており、自由に選択することはできない。
また、予備ユニットは常用ユニットのバイパス回路１０７を介して常用ユニットに常時接続してあるので、それぞれのユニットの独立性に欠けており、運転保守上の管理に注意を要する構成である。
【０００５】
【課題を解決するための手段】
本願発明は上述した従来方式の欠点を解消するためになされたものであって、現用ユニットと予備ユニットの選択が自由に行えるばかりでなく、現用ユニットの回路と無関係に予備ユニットを使用でき、かつ、切り替え操作に伴う供給電力の瞬断が発生しない回路構成を備えたホット・スタンバイ方式の無停電電源装置を提供しようとするものである。
【０００６】
【発明の実施の形態】
以下、本発明の実施例を図面を参照しながら説明する。
図１は、本発明によるホット・スタンバイ方式の無停電電源装置の回路構成を示すブロック図である。
スイッチ素子４を備えたバイパス回路３と蓄電池電源５を有するＵＰＳ１と、スイッチ素子７を備えたバイパス回路６と蓄電池電源８を有するＵＰＳ２は、入力端子１３において交流入力電源に並列接続してある。
ＵＰＳ１とＵＰＳ２の出力回路は電磁接触器９を介して共用の２次出力回路１０に接続してあり、常用ユニットと予備ユニットの切り替えは電磁接触器９によって行われる。
また、前記２次出力回路１０には双方向インバータ１１が並列接続してあって、その直流出力側にはコンデンサ１２が設けてある。
【０００７】
上述した回路構成を有するので、常用ユニットと予備ユニットはそれぞれ独立しており、任意に常用／予備の選択が可能である。
ＵＰＳ１を常用ユニットとし、ＵＰＳ２を予備ユニットとしていた場合においては、ＵＰＳ１は電磁接触器９を介して負荷に電力供給を行っており、また双方向インバータ１１を介して、コンデンサ１２を充電している。
いま、常用ユニットであるＵＰＳ１を停止させて、予備ユニットであるＵＰＳ２によって負荷に電力供給を行うときは、電磁接触器９によってＵＰＳ１とＵＰＳ２を切り替える。
電磁接触器９の切り替え操作に伴う電力供給の瞬断は、双方向インバータ１１に付帯するコンデンサ１２に蓄積されているエネルギーを交流変換して補償することができる。
【０００８】
本発明によるホット・スタンバイ方式の無停電電源装置を構成する常用ユニットと予備ユニットは、それぞれ蓄電池電源とスイッチ素子を備えたバイパス回路を有しており、また、常用／予備ユニットの切り替えを瞬断なしに実行できるので給電信頼度は極めて高いものとなる。
なお、回路構成を簡略化するためには、バイパス回路を設けなくともよい。
【０００９】
【発明の効果】
以上説明したように、本発明のホット・スタンバイ方式の無停電電源装置によると、常用ユニットと予備ユニットはそれぞれ独立していてユニット選択は自由に実行できる。
また、ユニットの切り替え操作は極めて簡単であって、切り替え時における供給電力の瞬断も発生しない。
従って、回路構成が簡単であることに伴って保守性が良く、極めて高度なホット・スタンバイ機能を実現できる。
【図面の簡単な説明】
【図１】本発明によるホット・スタンバイ方式の無停電電源装置の回路構成を示すブロック図。
【図２】従来技術によるホット・スタンバイ方式の無停電電源装置の回路構成を示すブロック図。
【符号の説明】
１，２ ＵＰＳ
３，６ バイパス回路
４，７ スイッチ素子
５，８ 蓄電池電源
９ 電磁接触器
１１ 双方向インバータ
１２ コンデンサ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hot standby type uninterruptible power supply.
[0002]
[Prior art]
FIG. 2 shows a circuit configuration of a hot standby type uninterruptible power supply according to the related art.
The UPS 101 in which the input terminal 109 is connected to the AC input power supply is a spare unit, and is constituted by a storage battery power supply 104 and a bypass circuit 102 having a switch element 103. The UPS 105 in which the
With the circuit configuration as described above, the UPS 105 is a regular unit and the UPS 101 is a standby unit to constitute a hot standby type uninterruptible power supply.
[0003]
In normal times, power is supplied to the load by the UPS 105 of the service unit, but the UPS 101 of the spare unit is also connected to the AC input power supply in a no-load state.
When the UPS 105 of the service unit is switched to the UPS 101 of the spare unit, when the switch element 106 provided in the bypass circuit 107 is turned on and the UPS 105 is turned off, the load is automatically switched to the UPS 101 of the spare unit.
When the standby unit UPS 101 is not used, the switch element 103 is turned on to make use of the bypass circuit 102, and the AC input power is supplied to the load as it is via the bypass circuit 107 of the
[0004]
[Problems to be solved by the invention]
As described above, in the hot standby type uninterruptible power supply according to the related art, the service unit and the spare unit are fixed due to the restriction of the constituent circuits, and cannot be freely selected.
In addition, since the spare unit is always connected to the service unit via the service unit bypass circuit 107, each unit lacks independence and requires careful management in operation and maintenance.
[0005]
[Means for Solving the Problems]
The present invention has been made in order to solve the above-mentioned drawbacks of the conventional system. In addition to being able to freely select the working unit and the spare unit, the spare unit can be used independently of the circuit of the working unit, and It is another object of the present invention to provide a hot standby type uninterruptible power supply having a circuit configuration that does not cause an instantaneous interruption of supply power due to a switching operation.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a circuit configuration of a hot standby type uninterruptible power supply according to the present invention.
A UPS 1 having a bypass circuit 3 having a switch element 4 and a storage battery power supply 5 and a UPS 2 having a bypass circuit 6 having a switch element 7 and a storage battery power supply 8 are connected in parallel to an AC input power supply at an
The output circuits of the UPS 1 and the UPS 2 are connected to a common
A bidirectional inverter 11 is connected to the
[0007]
Since the above-described circuit configuration is used, the service unit and the spare unit are independent of each other, and the service unit and the spare unit can be arbitrarily selected.
When the UPS 1 is used as a regular unit and the UPS 2 is used as a spare unit, the UPS 1 supplies power to the load via the electromagnetic contactor 9 and charges the
Now, when power is supplied to the load by the standby unit UPS2 while the regular unit UPS1 is stopped, the electromagnetic contactor 9 switches between the UPS1 and the UPS2.
The instantaneous interruption of power supply accompanying the switching operation of the electromagnetic contactor 9 can be compensated for by converting the energy stored in the
[0008]
The service unit and the spare unit that constitute the hot standby type uninterruptible power supply according to the present invention each have a bypass circuit having a storage battery power source and a switch element, and the switching between the service unit and the spare unit is momentarily interrupted. Power supply reliability is extremely high.
Note that a bypass circuit may not be provided to simplify the circuit configuration.
[0009]
【The invention's effect】
As described above, according to the hot standby type uninterruptible power supply of the present invention, the service unit and the spare unit are independent of each other, and the unit can be freely selected.
Further, the unit switching operation is extremely simple, and there is no instantaneous interruption of supply power at the time of switching.
Therefore, the maintainability is improved with the simple circuit configuration, and an extremely advanced hot standby function can be realized.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a circuit configuration of a hot standby type uninterruptible power supply according to the present invention.
FIG. 2 is a block diagram showing a circuit configuration of a hot standby type uninterruptible power supply according to the related art.
[Explanation of symbols]
1,2 UPS
3,6 bypass circuit 4,7 switch element 5,8 battery power supply 9 electromagnetic contactor 11
Claims (2)
常用ユニットから予備ユニットに切り替える時に発生する電磁接触器の切り替え期間における供給電力の瞬断を、双方向インバータの直流出力側に設けてあるコンデンサに蓄積されたエネルギーを交流変換して補償させるようにしたことを特徴とする請求項１に記載のホット・スタンバイ方式の無停電電源装置。The secondary output from the uninterruptible power supply specified as the service unit is supplied to the load via the electromagnetic contactor, and the capacitor is provided on the DC output side of the bidirectional inverter connected in parallel with the secondary output circuit. To charge,
To compensate for instantaneous interruption of power supply during the switching period of the electromagnetic contactor that occurs when switching from the service unit to the standby unit by converting the energy stored in the capacitor provided on the DC output side of the bidirectional inverter into AC. 2. The hot standby type uninterruptible power supply according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35339998A JP3569456B2 (en) | 1998-12-11 | 1998-12-11 | Hot standby uninterruptible power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35339998A JP3569456B2 (en) | 1998-12-11 | 1998-12-11 | Hot standby uninterruptible power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000184623A JP2000184623A (en) | 2000-06-30 |
| JP3569456B2 true JP3569456B2 (en) | 2004-09-22 |
Family
ID=18430583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35339998A Expired - Lifetime JP3569456B2 (en) | 1998-12-11 | 1998-12-11 | Hot standby uninterruptible power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3569456B2 (en) |
-
1998
- 1998-12-11 JP JP35339998A patent/JP3569456B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000184623A (en) | 2000-06-30 |
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