JPH02164236A - Uninterruptible power supply - Google Patents
Uninterruptible power supplyInfo
- Publication number
- JPH02164236A JPH02164236A JP63317103A JP31710388A JPH02164236A JP H02164236 A JPH02164236 A JP H02164236A JP 63317103 A JP63317103 A JP 63317103A JP 31710388 A JP31710388 A JP 31710388A JP H02164236 A JPH02164236 A JP H02164236A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- power supply
- reactor
- thyristor
- inverter
- 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.)
- Pending
Links
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000010304 firing Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、無停電にて負荷に交流電力を供給する無停電
電源装置に係り、特に経済性に優れた無停電電源装置に
関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an uninterruptible power supply that supplies alternating current power to a load without interruption, and particularly relates to an uninterruptible power supply that is particularly economical. Regarding equipment.
（従来の技術）
第２図は従来の無停電電源装置の一例を示すブロック図
である。第２図の如き構成の無停電電源装置を浮動充電
方式の無停電電源装置と称されている。(Prior Art) FIG. 2 is a block diagram showing an example of a conventional uninterruptible power supply. The uninterruptible power supply having the configuration as shown in FIG. 2 is called a floating charging type uninterruptible power supply.
第２図において、１は交流電源、２はサイリスタで構成
され、蓄電池５の充電器を兼ねる出力電圧可変の制御整
流器、３はイン・々−タ、４はインバータ３の交流出力
を改善する交流フィルタ、６は直流リアクトル、７はコ
ンデンサである。（なお、第２図の如き構成は秋元他昭
和５６年電気学会全国大会４９０．Ｐ５８２ｒ浮動充電
方式充電型電源装置の検討」に記されている。）また、
インバータ３は図示されない制御回路により交流フィル
タ４の出力を一定電圧とすべくノ母ルス幅が制御される
。In Fig. 2, 1 is an AC power supply, 2 is a thyristor, and is a controlled rectifier with variable output voltage that also serves as a charger for the storage battery 5, 3 is an inverter, and 4 is an AC that improves the AC output of the inverter 3. 6 is a DC reactor, and 7 is a capacitor. (The configuration shown in Fig. 2 is described in Akimoto et al. 1981 National Conference of the Institute of Electrical Engineers of Japan 490.P582R Study on Floating Charging Type Rechargeable Power Supply Device.)
The pulse width of the inverter 3 is controlled by a control circuit (not shown) in order to maintain the output of the AC filter 4 at a constant voltage.
第２図において、交流電源１ｔ−制御整流器２によシ整
流し九直流電圧はりゾルを多く含む。一般に蓄電ａ５は
充放電時の電流リプルによシ寿命の制限を受けるので、
直流リアクトル６が制御整流器２による充電電流のりプ
ルを低減する目的とコンデンサ７どの接続によシＩＭ流
フィルタ回路を構成し、インバータ３の入力電圧の安定
化を目的として設けられる。In FIG. 2, an AC power source 1t is rectified by a controlled rectifier 2 and contains a large amount of sol. Generally, the lifespan of the battery A5 is limited by the current ripple during charging and discharging, so
A DC reactor 6 is provided for the purpose of reducing the charging current ripple caused by the control rectifier 2, and for the purpose of stabilizing the input voltage of the inverter 3 by forming an IM flow filter circuit by connecting the capacitor 7.
（発明が解決しようとする課題）
この直流リアクトル６は交流電源１が健全の際はインバ
ータ３の負荷に相当する直流電流と蓄電ａ５を充電する
電流の双方を流すため、その通電電流によシ損失を発生
する。この損失は無停電電源装置の出力容量にもよるが
出力容量の約０．５〜１％にも及ぶ。又、一般には、蓄
′ＩＩＬ池５を充電するに必要な容量は、無停電電源装
置の出力容量の１０〜２０％程度である。(Problem to be Solved by the Invention) When the AC power supply 1 is healthy, the DC reactor 6 allows both the DC current corresponding to the load of the inverter 3 and the current for charging the storage battery a5 to flow, so that incur a loss. Although this loss depends on the output capacity of the uninterruptible power supply, it amounts to about 0.5 to 1% of the output capacity. Generally, the capacity required to charge the storage IIL battery 5 is about 10 to 20% of the output capacity of the uninterruptible power supply.
最近では、高速スイッチングデ／９イスの出現によシ、
インバータ３の高周波ＰＷＭ化が進み、例えＦｉ特開昭
６２−６０４７５号に見られるような定電圧定周波数電
源装置を使用した無停電電源装置の場合は、インバータ
３０入力電圧の変動に対してもその結果を出力電圧の変
化として捕え、瞬時に補正する機能を有するため、必ず
しもインバータ３の入力′１圧の安定化は必要としなく
なって来ている。Recently, with the advent of high-speed switching devices,
With the advancement of high-frequency PWM in the inverter 3, for example, in the case of an uninterruptible power supply using a constant voltage constant frequency power supply device as seen in Fi JP Patent Application Publication No. 62-60475, the inverter 30 is able to withstand fluctuations in input voltage. Since it has a function of capturing the result as a change in the output voltage and instantly correcting it, it is no longer necessary to stabilize the input '1 voltage of the inverter 3.
本発明の目的は前述の点に鑑みなされたもので、制御整
流器とインバータと蓄電池から成る無停電電源装置にお
いて、交流電源の健全時における主回路の損失の低減を
図シ、交流入力から交流出力までの総合効率を向上させ
ることを目的とする無力
停電電源装置を提供することにする。The object of the present invention was to reduce loss in the main circuit when the AC power supply is healthy in an uninterruptible power supply consisting of a controlled rectifier, an inverter, and a storage battery. We will provide a powerless power supply device that aims to improve the overall efficiency.
［発明の構成］
（課題を解決するための手段）
高周波ＰＷＭで構成されるインバータ３を用いた無停電
電源装置において、制御整流器２の出力に位置する直流
リアクトル６を省略し、制御！１流器２と蓄電池５との
間に蓄電池５が放電する極性にサイリスタを設け、蓄電
池５が充電する極性にダイオードと直流リアクトルを直
列接続した回路をサイリスタと並列に接続したものであ
る。[Structure of the Invention] (Means for Solving the Problems) In an uninterruptible power supply device using an inverter 3 configured with high-frequency PWM, the DC reactor 6 located at the output of the control rectifier 2 is omitted, and control! A thyristor is provided between the single current device 2 and the storage battery 5 at the polarity where the storage battery 5 discharges, and a circuit in which a diode and a DC reactor are connected in series is connected in parallel with the thyristor at the polarity where the storage battery 5 is charged.
（作用）
制御！Ｉ流器２とインバータ３の間の直流リアクトル６
はなくなるので、インノ４−夕３の負荷給電時における
損失は低減される。制御整流器２による蓄電ａ５への充
電電流は、直流リアクトルとダイオードの直列回路を通
して流れるが、前述のように充電電流は、インバータ３
の出力容量に比べ１０〜２０％と小さいので、この充電
回路の損失は第２図の直流リアクトル６の損失に比べ、
格段に小さくて済む。(effect) Control! DC reactor 6 between I current converter 2 and inverter 3
Therefore, the loss during load power supply of Inno 4-Y 3 is reduced. The charging current to the power storage a5 by the control rectifier 2 flows through the series circuit of the DC reactor and the diode, but as described above, the charging current flows through the inverter 3.
The loss in this charging circuit is 10 to 20% smaller than the output capacity of the DC reactor 6 in Fig. 2.
It's much smaller.
（実施例） 以下、本発明の実施例を第１図を参照して説明する。(Example) Embodiments of the present invention will be described below with reference to FIG.
第１図において、第２図と同一符号を付したものは第２
図と同一機能を示すのでその説明を省略する。１１は直
流リアクトル、１２はダイオード、１３はサイリスタを
示し、直ｉ １Ｊアクドル１１とダイオード１２の直列
回路が蓄）ＷＬ池５の充電回路を、サイリスタ１３が蓄
電池５の放電回路を構成している。In Figure 1, the same reference numerals as in Figure 2 refer to
Since the same function as in the figure is shown, the explanation thereof will be omitted. Reference numeral 11 indicates a DC reactor, 12 a diode, and 13 a thyristor. The series circuit of the DC I 1J reactor 11 and the diode 12 constitutes a charging circuit for the WL battery 5, and the thyristor 13 constitutes a discharging circuit for the storage battery 5. .
次に第１図の実施例の動作を説明する。交流電源１が正
常の場合、制御ａｍ器２−直流リアクドル１１−第２の
ダイオード１２を介して蓄ｔａ５が充電されると共に適
切な蓄電池電圧になるよう制御整流器２で制御される。Next, the operation of the embodiment shown in FIG. 1 will be explained. When the AC power source 1 is normal, the storage TA5 is charged via the control AM device 2, the DC reactor 11, and the second diode 12, and is controlled by the control rectifier 2 so as to have an appropriate storage battery voltage.
同時に、負荷には。At the same time, to the load.
イン／Ｊ−タ３−交流フィルタ４を介して供給される。It is supplied via an input/J-interface 3 and an AC filter 4.
直流リアクトル１１は制御整流器２による蓄電池５への
りプル電流を抑制するために設けられ、その電流容量は
一般にインバータ３の出力容量の１０〜２０％に選ばれ
る。ダイオード１２は、直列リアクトル１１を介しての
回路が充電時のみ動作するよう設けられたものである。The DC reactor 11 is provided to suppress the cross-pull current to the storage battery 5 caused by the control rectifier 2, and its current capacity is generally selected to be 10 to 20% of the output capacity of the inverter 3. The diode 12 is provided so that the circuit connected to the series reactor 11 operates only during charging.
交流電源１が停電もしくは低下し、制御整流器２で蓄電
池５の充電電圧を維持できなくなると１図示されない交
流電源低下回路で検出して即時にサイリスタ１３に点弧
指令を与えることにより、サイリスタ１３を介して蓄電
池５の電力がイン・々−タ３に供給され、負荷には無停
電で電力を供給することができる。When the AC power source 1 is out of power or has decreased and the control rectifier 2 is no longer able to maintain the charging voltage of the storage battery 5, the AC power source decrease circuit (not shown) detects this and immediately gives an firing command to the thyristor 13, thereby starting the thyristor 13. Power from the storage battery 5 is supplied to the interface 3 via the storage battery 5, and power can be supplied to the load without interruption.
このようにして直列リアクトル１１とダイオード１２の
直列回路とサイリスタ１３を並列に接続する０とにより
、交流電源１の健全時は従来と変らない蓄電ａ５の充電
回路を構成しながら、負荷への電力供給上からは直流リ
アクト、／Ｌ／６を省略できるので、主回路の損失の低
減を図ることができると共に、交流電源１の停電時には
サイリスタ１３を介して電力を供給することができる。In this way, by connecting the series circuit of the series reactor 11 and the diode 12, and the thyristor 13 in parallel, when the AC power supply 1 is healthy, a charging circuit for the storage battery a5 is configured, which is the same as before, and power is supplied to the load. Since the DC reactor /L/6 can be omitted from the supply side, loss in the main circuit can be reduced, and power can be supplied via the thyristor 13 during a power outage of the AC power supply 1.
第１図の実施例の制御整流器２はサイリスタ構成のみな
らず、直流電圧調整機能を有する回路であれば艮い。又
、第１図は無停電電源装置が単機システムの場合を示し
たが、並列システムでも°良いことは明白であシ、又、
蓄電池が並列システムに共通・分離の区別なく適用可能
である。又、蓄電池の放電回路用サイリスタは、順方向
が阻止できる半導体であれば（例えばＧＴＯ）何んでも
艮い。The controlled rectifier 2 of the embodiment shown in FIG. 1 is not limited to a thyristor configuration, but may be any circuit having a DC voltage adjustment function. Also, although Figure 1 shows the case where the uninterruptible power supply is a single system, it is clear that a parallel system is also possible.
Storage batteries can be applied to parallel systems regardless of whether they are common or separate. Further, the thyristor for the discharge circuit of the storage battery may be any semiconductor as long as it can block the forward direction (for example, GTO).
［発明の効果］
以上の説明のように、本発明によれば、整流器とインバ
ータと蓄電池から成る無停電電源装置において、整流器
を直流出力電圧可変の可制御電源とし、可制御電圧源の
直流出力に蓄電池との間に蓄電池が放電する極性にサイ
９スタを１設け、蓄電池が充電する極性にダイオードを
直流リアクトルを直列接続した回路をサイリスタと並列
に接続することによシ交流電源の健全時は主回路の損失
を低減することＫよυ、交流入力から交流出力までの総
合効率の良い無停電電源装置を構成することができる。[Effects of the Invention] As described above, according to the present invention, in an uninterruptible power supply comprising a rectifier, an inverter, and a storage battery, the rectifier is a controllable power supply with variable DC output voltage, and the DC output of the controllable voltage source is When the AC power supply is healthy, a thyristor is installed between the storage battery and the polarity where the storage battery discharges, and a circuit in which a diode and a DC reactor are connected in series is connected in parallel to the polarity where the storage battery is charged. By reducing the loss in the main circuit, it is possible to construct an uninterruptible power supply with good overall efficiency from AC input to AC output.
第１図は本発明の一実施例を示すブロック図、第２図は
従来の無停電電源装置の一例を示すブロック図である。
１・・・交流電源、２・・・整流器、３・・・インバー
タ、４・・・交流フィルタ、５・・・蓄電池、６・・・
直流リアクトル、７・・・コンデンサ、１１…直流リア
クトル、１２・・・ダイオード、１３・・・サイリスタ
。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional uninterruptible power supply. 1... AC power supply, 2... Rectifier, 3... Inverter, 4... AC filter, 5... Storage battery, 6...
DC reactor, 7... Capacitor, 11... DC reactor, 12... Diode, 13... Thyristor.
Claims (1)
制御整流器の直流出力を交流に変換するＰＷＭ制御イン
バータ、前記交流電源の停電時に点弧される半導体スイ
ッチング素子を介して前記ＰＷＭ制御インバータに直流
電力を供給する蓄電池、該蓄電池を前記制御整流器で充
電するために前記半導体スイッチング素子に並列接続さ
れる直流リアクトルとダイオードから成る直列回路を具
備し、前記制御整流器と前記ＰＷＭ制御インバータとの
間に設けていた直流リアクトルを省略したことを特徴と
する無停電電源装置。A controlled rectifier that inputs an AC power source and converts the AC into DC, a PWM controlled inverter that converts the DC output of the controlled rectifier to AC, and a semiconductor switching element that is turned on when the AC power is interrupted to the PWM controlled inverter. A storage battery for supplying DC power, a series circuit consisting of a DC reactor and a diode connected in parallel to the semiconductor switching element for charging the storage battery with the controlled rectifier, and between the controlled rectifier and the PWM controlled inverter. An uninterruptible power supply system characterized by omitting the DC reactor installed in the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63317103A JPH02164236A (en) | 1988-12-15 | 1988-12-15 | Uninterruptible power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63317103A JPH02164236A (en) | 1988-12-15 | 1988-12-15 | Uninterruptible power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02164236A true JPH02164236A (en) | 1990-06-25 |
Family
ID=18084473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63317103A Pending JPH02164236A (en) | 1988-12-15 | 1988-12-15 | Uninterruptible power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02164236A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2126533A1 (en) * | 1997-08-13 | 1999-03-16 | Proyectos Y Tecnologia Electro | Novel switching system applicable in diverse apparatuses provided with continuous power-supply systems |
| ITAR20120029A1 (en) * | 2012-10-04 | 2014-04-05 | Borri S P A | ELECTRIC CONVERSION SYSTEM AND MANAGEMENT OF CONTINUITY AT HIGH EFFICIENCY FOR STATIC GROUPS OF CONTINUITY (UPS) AND DERIVATIVE EQUIPMENT. |
| WO2015076920A1 (en) * | 2013-11-20 | 2015-05-28 | Abb Technology Ag | Hybrid alternating current (ac) direct current (dc) distribution for multiple-floor buildings |
| US9853536B2 (en) | 2013-12-23 | 2017-12-26 | Abb Schweiz Ag | Methods, systems, and computer readable media for managing the distribution of power from a photovoltaic source in a multiple-floor building |
-
1988
- 1988-12-15 JP JP63317103A patent/JPH02164236A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2126533A1 (en) * | 1997-08-13 | 1999-03-16 | Proyectos Y Tecnologia Electro | Novel switching system applicable in diverse apparatuses provided with continuous power-supply systems |
| ITAR20120029A1 (en) * | 2012-10-04 | 2014-04-05 | Borri S P A | ELECTRIC CONVERSION SYSTEM AND MANAGEMENT OF CONTINUITY AT HIGH EFFICIENCY FOR STATIC GROUPS OF CONTINUITY (UPS) AND DERIVATIVE EQUIPMENT. |
| WO2014053464A1 (en) * | 2012-10-04 | 2014-04-10 | Borri S.P.A. | High-efficiency electric conversion and continuity management system for uninterruptible power supplies (ups) and derived apparatuses |
| WO2015076920A1 (en) * | 2013-11-20 | 2015-05-28 | Abb Technology Ag | Hybrid alternating current (ac) direct current (dc) distribution for multiple-floor buildings |
| CN105745808A (en) * | 2013-11-20 | 2016-07-06 | Abb技术有限公司 | Hybrid alternating current (AC) direct current (DC) distribution for multiple-floor buildings |
| US9755433B2 (en) | 2013-11-20 | 2017-09-05 | Abb Schweiz Ag | Hybrid alternating current (AC)/direct current (DC) distribution for multiple-floor buildings |
| US9853536B2 (en) | 2013-12-23 | 2017-12-26 | Abb Schweiz Ag | Methods, systems, and computer readable media for managing the distribution of power from a photovoltaic source in a multiple-floor building |
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