JPH02228224A - Uninterruptive power supply - Google Patents

Uninterruptive power supply

Info

Publication number
JPH02228224A
JPH02228224A JP1047641A JP4764189A JPH02228224A JP H02228224 A JPH02228224 A JP H02228224A JP 1047641 A JP1047641 A JP 1047641A JP 4764189 A JP4764189 A JP 4764189A JP H02228224 A JPH02228224 A JP H02228224A
Authority
JP
Japan
Prior art keywords
power supply
inverter
output
control section
error amplifier
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.)
Granted
Application number
JP1047641A
Other languages
Japanese (ja)
Other versions
JP2776535B2 (en
Inventor
Takashi Ogawa
尚 小川
Takashi Hatakeyama
隆 畠山
Hidekazu Sugi
杉　英一
Katsuaki Kawamoto
川本　克晃
Toshiji Umetsu
梅津　利治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sansha Electric Manufacturing Co Ltd
Tohoku Electric Power Co Inc
Panasonic Holdings Corp
Original Assignee
Sansha Electric Manufacturing Co Ltd
Tohoku Electric Power Co Inc
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sansha Electric Manufacturing Co Ltd, Tohoku Electric Power Co Inc, Matsushita Electric Industrial Co Ltd filed Critical Sansha Electric Manufacturing Co Ltd
Priority to JP1047641A priority Critical patent/JP2776535B2/en
Publication of JPH02228224A publication Critical patent/JPH02228224A/en
Application granted granted Critical
Publication of JP2776535B2 publication Critical patent/JP2776535B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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)

Abstract

PURPOSE:To enable a device to make stable instantaneous starting by providing the 1st analogue switch to interrupt the detection signal of AC power supply when it is normal and the 2nd analogue switch to interrupt when the AC power supply service is interrupted and conducts in normalcy. CONSTITUTION:The 1st analogue switch 8 that opens in normalcy of AC power supply and conducts in service interruption and the 2nd analogue switch 9 that opens in service interruption of the AC power supply and conducts in normalcy to input the voltage and phase of an inverter control section 5 into an error amplifier 4 are provided. By the signal from the inverter control section 5 AC is outputted and supplied to a load. The voltage and phase of the output of the inverter 2 is detected and the feedback is constituted. The error amplifier 4 and inverter control section 5 will thereby be operated in an active state, so that stable instantaneous starting can be performed.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、待機型無停電電源装置に関するものであり
、特に、停電時に瞬時に出力電圧を発生させる無停電電
源装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a standby uninterruptible power supply, and more particularly to an uninterruptible power supply that instantaneously generates an output voltage during a power outage.

従来の技術 この種の待機型無停電電源装置は、第３図に示すように
、蓄電池１とこの蓄電池１を入力きしトランジスタ・サ
イリスタ等を制御素子とするインバータと、インバータ
２の出力電圧・位相を検出し、この検出信号と出力設定
信号３とを比較しその誤差を増幅する誤差増幅器４と、
誤差増幅器４の出力を入力としたインパーク２の制御素
子をＰＷＭ（パルス幅変調）制御などを行うインバータ
制御部５により構成されている。６は電源装置の出力端
で負荷が接続されている。2. Description of the Related Art As shown in FIG. 3, this type of standby type uninterruptible power supply system consists of a storage battery 1, an inverter that uses transistors, thyristors, etc. as control elements to input the storage battery 1, and an output voltage of an inverter 2. an error amplifier 4 that detects the phase, compares this detection signal with the output setting signal 3, and amplifies the error;
It is composed of an inverter control section 5 that receives the output of the error amplifier 4 as input and performs PWM (pulse width modulation) control on the control elements of the impark 2. 6 is the output end of the power supply device, to which a load is connected.

今、第４図（ａ）で示すように、時刻ｔより前は交流電
源（第３図で記載せず）が正常で、負荷には交流電力が
供給されている。一方、インバータ２は、起動している
と、交流電源とインバータ２間に横流が流れるため、イ
ンバータ２はしゃ断されている。たとえば、インバータ
制御部５の出力にアナログスイッチ７を設けて、インバ
ータ２への制御信号をしゃ断し、インバータ２を停止し
ている。Now, as shown in FIG. 4(a), before time t, the AC power supply (not shown in FIG. 3) is normal, and AC power is supplied to the load. On the other hand, when the inverter 2 is activated, a cross current flows between the AC power source and the inverter 2, so the inverter 2 is cut off. For example, an analog switch 7 is provided at the output of the inverter control section 5 to cut off the control signal to the inverter 2 and stop the inverter 2.

発明が解決しようとする課組 ところで、待機型無停電電源装置では、負荷に入力する
電圧・位相を検出し、この検出信号と出力設定信号が比
較される。商用電源を受電中は７をしゃ断しているので
検出信号がフィードバック系を構成するインバータ２の
出力でないため、検出信号と出力設定信号との誤差が太
き（、誤差増幅器４の出力は、飽和状態になっている。Problems to be Solved by the Invention By the way, in a standby type uninterruptible power supply device, the voltage and phase input to the load are detected, and this detection signal and the output setting signal are compared. 7 is cut off while receiving commercial power, so the detection signal is not the output of the inverter 2 that constitutes the feedback system, so there is a large error between the detection signal and the output setting signal (the output of the error amplifier 4 is saturated). is in a state.

そして、時刻ｔて交流電源が停電すると、第４図（ｂ）
に示すように、アナログスイッチ７に信号が入力され、
誤差増幅器４の出力信号がインバータ制御部５、アナロ
グスイッチ７を介してインバータ２に信号が入力して、
起動する。このとき誤差増幅器４の出力は最大又は最小
を出力しているため、インバータ２の出力は、第４図（
Ｃ）の実線又は破線で示すように切り替り、無停電電源
装置が起動してから制御が正常になるまで時間がかかっ
ていた。Then, when the AC power supply fails at time t, Fig. 4(b)
As shown in the figure, a signal is input to the analog switch 7,
The output signal of the error amplifier 4 is input to the inverter 2 via the inverter control section 5 and the analog switch 7,
to start. At this time, since the output of the error amplifier 4 is the maximum or minimum, the output of the inverter 2 is as shown in FIG.
As shown by the solid line or broken line in C), it took a long time for the control to become normal after the uninterruptible power supply started up.

このような期間に負荷は損傷又は停止など重大な影響を
受けることになる。During such periods, the load will be seriously affected, such as damage or shutdown.

課題を解決するための手段 この発明は、蓄電池と、この蓄電池を入力とするインバ
ータと、このインバータの出力を検出した検出信号と出
力設定信号とを比較し誤差を増幅する誤差増幅器と、こ
の誤差増幅器の出力を入力とし前記インバータを制御す
るインバータ制御部により構成された待機無停電電源装
置において、交流電源の正常時にその検出信号をしゃ断
する第１のアナログスイッチと、交流電源の停電時にし
ゃ断し、正常時にそのインバータ制御部の電圧・位相を
その誤差増幅器に入力させるよう一導通ずる第２のアナ
ログスイッチとからなる無停電電源装置である。Means for Solving the Problems This invention provides a storage battery, an inverter that receives the storage battery as an input, an error amplifier that compares a detection signal that detects the output of the inverter with an output setting signal and amplifies the error, and a In a standby uninterruptible power supply device configured with an inverter control unit that receives the output of an amplifier as an input and controls the inverter, the standby uninterruptible power supply device includes a first analog switch that cuts off the detection signal when the AC power supply is normal, and a first analog switch that cuts off the detection signal during a power outage of the AC power supply. , and a second analog switch that is turned on so that the voltage and phase of the inverter control section are input to the error amplifier during normal operation.

作　　　用 この発明によると、交流電源の正常時には、インバータ
制御部の電圧・位相を誤差増幅器に入力し、出力設定信
号と比較しその誤差を増幅して、出力設定信号とインバ
ータ制御部との誤差をＯにするようにマイナーループが
構成されている。このとき、インバータ制御部では、イ
ンバータから出力される交流電源と同相の交流が出力す
るよう作られ、停電を待機している。交流電源が停電す
ると、第２アナログスイツチがしゃ断し、第１アナログ
スイツチは導通する。そして、インバータ制御部からの
信号によって交流を出力して負荷に供給する。インバー
タの出力の電圧・位相が検出されフィードバックが構成
される。このように、誤差増幅器とインバータ制御部が
能動状態で動作して、安定な瞬時起動が可能となった。According to this invention, when the AC power supply is normal, the voltage and phase of the inverter control section are input to the error amplifier, compared with the output setting signal, and the error is amplified, thereby reducing the error between the output setting signal and the inverter control section. A minor loop is configured so that the value becomes O. At this time, the inverter control unit is configured to output an alternating current that is in phase with the alternating current power output from the inverter, and is on standby for a power outage. When the AC power supply fails, the second analog switch is cut off and the first analog switch is turned on. Then, according to a signal from the inverter control section, alternating current is output and supplied to the load. The voltage and phase of the inverter output are detected and feedback is configured. In this way, the error amplifier and inverter control section operate in an active state, making stable instantaneous startup possible.

実施例 つぎにこの発明を、その実施例を示した第１図とともに
、詳細に説明する。Embodiment Next, the present invention will be explained in detail with reference to FIG. 1 showing an embodiment thereof.

第１図において、第３図と同じ記号は同じものを示す。In FIG. 1, the same symbols as in FIG. 3 indicate the same things.

異なる点は、インバータ２の出力電圧・位相を検出する
検出回路に、交流電源の正常時にしゃ断し、停電１に導
通する第１アナログスイツチ８と、交流電源の停電時に
しゃ断し、正常時に導通し、インバータ制御部の電圧・
位相を誤差増幅器４に入力させる第２アナログスイツチ
９を設けた点にある。The difference is that the detection circuit that detects the output voltage and phase of the inverter 2 includes a first analog switch 8 that shuts off when the AC power supply is normal and conducts during a power outage 1, and a first analog switch 8 that shuts off during a power outage and conducts during normal operation. , the voltage of the inverter control section
The second analog switch 9 is provided for inputting the phase to the error amplifier 4.

今、第２図（ａ）に示すように時刻ｔより前は交流電源
が正常で、負荷には交流電力が供給されている。負荷に
入力する電圧・位相を検出した検出信号は、第１アナロ
グスイツチ８が第２図（ｂ）に示すようにしゃ断してい
るため、誤差増幅器４には入力されない。一方、無停電
電源の起動当初検出信号が０のため、出力設定信号３と
の誤差が太き（誤差増幅器４の出力は最大を出力してお
り、インバータ制御部では、インバータ２の出力が最大
になるよう制御しようとしている。インバータ制御部５
の正弦波を出力する部分から信号を第２図（ｅ）で示す
ように導通ずる第２アナログスイツチを介して誤差増幅
器４に入力させる。すなわち、インバータ制御部５の信
号と出力設定信号とを比較しその誤差を増幅し、その誤
差を０にするよう動作している。インバータ制御部５で
は、インバータから交流電源と同相の交流が出力するよ
う待機している。Now, as shown in FIG. 2(a), before time t, the AC power supply is normal and AC power is being supplied to the load. The detection signal that detects the voltage and phase input to the load is not input to the error amplifier 4 because the first analog switch 8 cuts it off as shown in FIG. 2(b). On the other hand, since the initial detection signal of the uninterruptible power supply is 0, there is a large error with the output setting signal 3 (the output of the error amplifier 4 is the maximum output, and the inverter control section detects that the output of the inverter 2 is the maximum output). Inverter control unit 5
The signal from the part that outputs the sine wave is input to the error amplifier 4 via the second analog switch which is turned on as shown in FIG. 2(e). That is, it operates to compare the signal of the inverter control section 5 and the output setting signal, amplify the error, and reduce the error to zero. The inverter control unit 5 is on standby so that the inverter outputs an alternating current that is in phase with the alternating current power supply.

つぎに、第２図（ａ）で示す時刻ｔにおいて交流電源が
停電すると、同図（ｂ）に示すように第１アナログスイ
ツチ１は導通し、同図（Ｃ）に示すように第２アナログ
スイッチ２はしゃ断する。待機するインバータ制御部５
から信号が出力され、インバータ２は制御され負荷に交
流電力が供給される。インバータの出力電圧・位相が検
出され誤差増幅器４に入力しフィードバックが構成され
る。Next, when the AC power supply fails at time t shown in FIG. 2(a), the first analog switch 1 becomes conductive as shown in FIG. 2(b), and the second analog switch 1 becomes conductive as shown in FIG. Switch 2 is cut off. Inverter control unit 5 on standby
A signal is output from the inverter 2, and the inverter 2 is controlled to supply AC power to the load. The output voltage and phase of the inverter are detected and input to the error amplifier 4 to form feedback.

発明の効果 以上のように、この発明の待機型無停電電源装置による
と、交流電源が正常時において、誤差増幅器とインバー
タ制御部間にマイナーループが構成され、能動状態で動
作しているため、安定な瞬時起動が可能となった。Effects of the Invention As described above, according to the standby uninterruptible power supply device of the present invention, when the AC power supply is normal, a minor loop is configured between the error amplifier and the inverter control section and operates in an active state. Stable instantaneous startup is now possible.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの発明の一実施例を示したブロックインバー
タの出力電圧波形図を示す。 ２・・・・・・インバータ、４・・・・・・誤差増幅器
、５・・・・・・インバータ制御部、８・・・・・・第
１アナログスイツチ、９・・・・・・第２アナログスイ
ツチ。 代理人の氏名　弁理士　粟野重孝　ほか１名０Ｎ−ＯＦ
Ｆ説明図、同図（Ｃ）は第２アナログスイツチの０Ｎ−
ＯＦＦ説明図、第３図は従来の無ナログスイッチのＯＮ
・ＯＦＦ説明図、同図（Ｃ）はず−一一蓄′Ｉｊ引立 第　３　図 第４図 を 第２図FIG. 1 shows an output voltage waveform diagram of a block inverter showing an embodiment of the present invention. 2... Inverter, 4... Error amplifier, 5... Inverter control section, 8... First analog switch, 9... First analog switch. 2 analog switch. Name of agent: Patent attorney Shigetaka Awano and 1 other person 0N-OF
F explanatory diagram, the same figure (C) is 0N- of the second analog switch.
OFF explanatory diagram, Figure 3 is the ON of the conventional non-analog switch
・OFF explanatory diagram, the same figure (C) should be - 11' Ij pull out Figure 3 Figure 4 Figure 2

Claims (1)

【特許請求の範囲】[Claims] 蓄電池と、この蓄電池を入力とするインバータと、この
インバータの出力を検出した検出信号と出力設定信号と
を比較し誤差を増幅する誤差増幅器と、この誤差増幅器
の出力を入力とし前記インバータを制御するインバータ
制御部により構成された待機型無停電電源装置において
、交流電源の正常時にその検出信号をしゃ断する第１の
アナログスイッチと、交流電源の停電時にしゃ断し、正
常時に導通してそのインバータ制御部の電圧・位相をそ
の誤差増幅器に入力させる第２のアナログスイッチから
なる無停電電源装置。A storage battery, an inverter that receives the storage battery as an input, an error amplifier that compares a detection signal obtained by detecting the output of the inverter with an output setting signal and amplifies the error, and controls the inverter using the output of the error amplifier as an input. In a standby uninterruptible power supply device configured with an inverter control section, a first analog switch that cuts off the detection signal when the AC power supply is normal, and a first analog switch that cuts off the detection signal when the AC power supply is out of order and conducts when it is normal and connects the inverter control section. An uninterruptible power supply device consisting of a second analog switch that inputs the voltage and phase of 1 to the error amplifier.
JP1047641A 1989-02-28 1989-02-28 Uninterruptible power system Expired - Lifetime JP2776535B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1047641A JP2776535B2 (en) 1989-02-28 1989-02-28 Uninterruptible power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1047641A JP2776535B2 (en) 1989-02-28 1989-02-28 Uninterruptible power system

Publications (2)

Publication Number Publication Date
JPH02228224A true JPH02228224A (en) 1990-09-11
JP2776535B2 JP2776535B2 (en) 1998-07-16

Family

ID=12780868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1047641A Expired - Lifetime JP2776535B2 (en) 1989-02-28 1989-02-28 Uninterruptible power system

Country Status (1)

Country Link
JP (1) JP2776535B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017050933A (en) * 2015-08-31 2017-03-09 東芝三菱電機産業システム株式会社 Uninterruptible power supply system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017050933A (en) * 2015-08-31 2017-03-09 東芝三菱電機産業システム株式会社 Uninterruptible power supply system

Also Published As

Publication number Publication date
JP2776535B2 (en) 1998-07-16

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