JPH09266631A - Power active filter having uninterruptible power supply function - Google Patents
Power active filter having uninterruptible power supply functionInfo
- Publication number
- JPH09266631A JPH09266631A JP8071666A JP7166696A JPH09266631A JP H09266631 A JPH09266631 A JP H09266631A JP 8071666 A JP8071666 A JP 8071666A JP 7166696 A JP7166696 A JP 7166696A JP H09266631 A JPH09266631 A JP H09266631A
- Authority
- JP
- Japan
- Prior art keywords
- power
- load
- current
- power supply
- switch
- 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
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電力用変換装置な
どの高調波発生機器の無効電力と高調波電流の補償、お
よび瞬時停電または瞬時電圧降下時の電圧補償を目的と
した電源補償装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply compensator for the purpose of compensating for reactive power and harmonic current of a harmonic generating device such as a power converter, and for compensating for voltage during momentary power failure or momentary voltage drop. It is a thing.
【０００２】[0002]
【従来の技術】従来は負荷の基本波無効電力と高調波電
流の補償と、瞬時停電または瞬時電圧低下時の電圧補償
は図３に示すように電力用アクティブフイルタ３と無停
電電源装置（以下ＵＰＳと言う）９とをそれぞれ別々に
負荷２と並列接続して設置していた。2. Description of the Related Art Conventionally, as shown in FIG. 3, active power filter 3 for power supply and uninterruptible power supply (hereinafter 9) (referred to as UPS) are separately installed in parallel with the load 2.
【０００３】[0003]
【発明が解決しようとする課題】上記の従来技術では、
負荷の無効電力と高調波電流を補償する電力用アクティ
ブフイルタと、停電または瞬時電圧降下を補償するＵＰ
Ｓはそれぞれ別々の装置であったために、設置する設備
全体が大規模になり広い設置面積と高額の設備費を要す
るなど、多くの改善すべき課題を擁していた。In the above prior art,
Active power filter for compensating load reactive power and harmonic current, and UP for compensating for power failure or instantaneous voltage drop
Since each S was a separate device, the entire equipment to be installed was large in scale, requiring a large installation area and high equipment costs, and had many problems to be improved.
【０００４】上記電力用アクティブフイルタとＵＰＳ
は、基本的には同じ電圧形のインバータで構成される
が、電力用アクティブフイルタは負荷電流による電流制
御方式を採用し、一方ＵＰＳは電源系統の標準電圧に相
当する基準電圧によって定電圧制御する異なる制御方式
を採用しているためにその共用化が困難であった。Power active filter and UPS
Are basically composed of inverters of the same voltage type, but the active filter for electric power adopts the current control method by the load current, while the UPS controls the constant voltage by the reference voltage corresponding to the standard voltage of the power supply system. It was difficult to share it because different control methods were adopted.
【０００５】[0005]
【課題を解決するための手段】本発明の装置は、負荷が
電源系統に接続されて稼動している平常時には、負荷電
流中の基本波無効電流と高調波電流を検出することによ
って、これらの電流成分に相当する基本波無効電流と高
調波電流をアクティブフイルタから供給してこれを補償
し、停電あるいは電源電圧の瞬時電圧降下時には上記ア
クティブフイルタがＵＰＳとして作動し、無停電で負荷
に電力を供給し続けるように構成した無停電電源機能を
有する電力用アクティブフイルタである。即ち、The device of the present invention detects these fundamental reactive currents and harmonic currents in the load current during normal operation when the load is connected to the power supply system and is operating. The fundamental reactive current and the harmonic current corresponding to the current component are supplied from the active filter to compensate for this, and the active filter operates as UPS at the time of power failure or momentary voltage drop of the power supply voltage, and power is supplied to the load without power failure. It is an active power filter having an uninterruptible power supply function configured to continue supplying power. That is,
【０００６】（１）開閉器１と、負荷２と、変流器７
と、変成器８と、直流電源４とインバータ５と制御部６
とからなる無停電電源機能を有する電力用アクティブフ
イルタであって、上記アクティブフイルタを形成するイ
ンバータ５は、高調波を発生する負荷２と並列接続して
開閉器１を介して電源系統に接続され、平常時上記開閉
器１は閉路状態で電源系統に接続され、変流器７と変成
器８で検出した上記負荷２の電流と電圧を制御部６に入
力し、該制御部６は、上記検出の電流と電圧によって負
荷電流と逆位相の基本波無効電力と高調波電流を発生さ
せるようインバータ５を制御して該負荷２の基本波無効
電力と発生高調波電流とを相殺してこれを補償し、電源
系統が停電または瞬時電圧低下時には、上記開閉器１は
直ちに開路されて電源系統から開放され、直流電源
（４）から所要電力が供給されてインバータ５により、
上記負荷２に交流電力を供給して停電補償し、電源系統
が通常状態に復電時直ちに上記開閉器１が閉路して平常
時動作に復帰するようにしたことを特徴とする無停電電
源機能を有する電力用アクティブフイルタである。(1) Switch 1, load 2, current transformer 7
, Transformer 8, DC power source 4, inverter 5, and control unit 6
In the active power filter having an uninterruptible power supply function, the inverter 5 forming the active filter is connected in parallel with the load 2 generating harmonics and connected to the power supply system via the switch 1. Normally, the switch 1 is connected to the power supply system in a closed state, and the current and the voltage of the load 2 detected by the current transformer 7 and the transformer 8 are input to the control unit 6, which controls the above-mentioned Based on the detected current and voltage, the inverter 5 is controlled so as to generate a fundamental wave reactive power and a harmonic current having a phase opposite to that of the load current, and the fundamental wave reactive power and the generated harmonic current of the load 2 are offset to cancel this. Compensation, when the power supply system has a power failure or a momentary voltage drop, the switch 1 is immediately opened to be released from the power supply system, and the required power is supplied from the DC power supply (4) to the inverter 5.
An uninterruptible power supply function characterized in that AC power is supplied to the load 2 to compensate for a power outage, and the switch 1 is immediately closed to restore normal operation when the power supply system returns to a normal state. It is an active filter for electric power having.
【０００７】（２）負荷電流を入力してこれに含まれる
基本波無効電流と高調波電流を検出し、該２つの電流の
和を出力する制御部Ａ１０と、上記負荷電流と系統電圧
から負荷インピーダンスを検出する負荷インピーダンス
検出部１１と、電源系統の標準電圧に相当する基準電圧
を発生し出力する基準電圧電源１２と、該基準電圧電源
の出力電圧を上記検出の負荷インピーダンスで除した電
流を出力する制御部Ｂ１３と、系統電圧の変化により停
電または瞬時電圧低下を検知する停電検知部１４と、該
検知部の出力信号により停電または瞬時電圧低下時に開
路するスイッチＡ１５と、閉路するスイッチＢ１６とか
らなり、上記制御部Ａ１０からスイッチＡ１５を通じ、
また制御部Ｂ１３からはスイッチＢ１６を通じてインバ
ータ５の出力電流を制御できるように構成した制御部６
を具備した上記（１）の無停電電源機能を有する電力用
アクティブフイルタである。(2) A control unit A10 which inputs a load current, detects a fundamental wave reactive current and a harmonic current contained therein, and outputs a sum of the two currents, and a load from the load current and the system voltage. A load impedance detection unit 11 that detects impedance, a reference voltage power supply 12 that generates and outputs a reference voltage corresponding to the standard voltage of the power supply system, and a current obtained by dividing the output voltage of the reference voltage power supply by the load impedance of the above detection. A control unit B13 that outputs, a power failure detection unit 14 that detects a power failure or an instantaneous voltage drop due to a change in system voltage, a switch A15 that opens when a power failure or an instantaneous voltage drop occurs due to the output signal of the detection unit, and a switch B16 that closes. From the control unit A10 through the switch A15,
Further, the control unit 6 configured to control the output current of the inverter 5 from the control unit B13 through the switch B16.
An active power filter having the uninterruptible power supply function of (1) above.
【０００８】[0008]
【発明の実施の形態】本発明の無停電電源機能を有する
電力用アクティブフイルタは、平常時は負荷の基本波無
効電力と高調波電流を補償し、電源系統の力率改善と電
圧フリッカを低減させるとともに高調波による電圧歪を
抑制し、電源系統が停電または瞬時電圧低下時には、負
荷回路を電源系統から切り離してアクティブフイルタか
ら一定電圧の交流電力を負荷に供給する。BEST MODE FOR CARRYING OUT THE INVENTION The power active filter having an uninterruptible power supply function of the present invention compensates the fundamental reactive power and harmonic current of a load in normal times to improve the power factor of the power supply system and reduce voltage flicker. In addition to suppressing the voltage distortion due to harmonics, the load circuit is disconnected from the power supply system when the power supply system has a power failure or an instantaneous voltage drop, and AC power of a constant voltage is supplied to the load from the active filter.
【０００９】[0009]
【実施例１】図１は、本発明の無停電電源機能を有する
電力用アクティブフイルタの一実施例を示す回路構成図
である。図１において、２は半導体などで構成される電
力変換装置などの高調波発生負荷であり、本発明の無停
電電源機能を有するアクティブフイルタは上記負荷２と
並列接続されている。上記アクティブフイルタ部は、補
償電流を出力するインバータ５と、停電時に電力を供給
する蓄電池または大容量電解コンデンサバンクからなる
直流電源４と、これらを制御する制御部６とで構成さ
れ、制御部６には変流器７から負荷電流と、変成器８か
ら電源電圧が入力される。また、開閉器１は平常時は閉
路していて電源系統と接続して負荷２に電源系統から電
力が供給され、電源系統が停電または瞬時電圧低下時に
は開放して負荷回路を電源系統から瞬時に切り離しす
る。このような瞬時動作に応答する上記開閉器１はサイ
リスタなどの半導体からなる高速度応答スイッチであ
る。[Embodiment 1] FIG. 1 is a circuit diagram showing an embodiment of an active power filter having an uninterruptible power supply function of the present invention. In FIG. 1, reference numeral 2 denotes a harmonic generation load such as a power conversion device formed of a semiconductor or the like, and an active filter having an uninterruptible power supply function of the present invention is connected in parallel with the load 2. The active filter unit includes an inverter 5 that outputs a compensation current, a DC power source 4 that is a storage battery or a large-capacity electrolytic capacitor bank that supplies power in the event of a power failure, and a control unit 6 that controls these. A load current is input from the current transformer 7 and a power supply voltage is input from the transformer 8. Further, the switch 1 is normally closed and connected to the power supply system to supply power to the load 2 from the power supply system. When the power supply system is interrupted or the voltage drops momentarily, the load circuit is opened instantaneously from the power supply system. Disconnect. The switch 1 which responds to such an instantaneous operation is a high speed response switch made of a semiconductor such as a thyristor.
【００１０】図２は、本発明の無停電電源機能を有する
電力用アクティブフイルタの制御部６の実施例の構成図
である。制御部Ａ１０は、変流器７の出力する負荷電流
と変成器８で得られる電源電圧を入力し、負荷の基本波
無効電流と高調波電流を検出してこの２つの電流の和を
出力する。負荷インピーダンス検出部１１は、上記検出
の負荷電流と系統電圧から、系統電圧Ｅを負荷電流の基
本波電流Ｉで除し、負荷インピーダンスＺ＝Ｅ／Ｉとし
て出力する。基準電圧電源１２は、電源系統の標準周波
数、電圧に相当する基準電圧 Ｅ0を小形発信器などによ
って発生させ出力する。制御部Ｂ１３は、上記基準電圧
Ｅ0を負荷インピーダンスＺで除す機能を有し、制御電
流Ｉ＝Ｅ0/Ｚとして信号出力する。停電検出部１４は、
停電または瞬時電圧低下時には系統電圧の大きさ、位相
または波形の急変を検知して信号出力し、該信号でスイ
ッチＡ１５を瞬時開路、スイッチＢ１６を瞬時閉路す
る。なお、該スイッチＡ及びＢは半導体による高速度ス
イッチである。FIG. 2 is a block diagram of an embodiment of the control unit 6 of the power active filter having the uninterruptible power supply function of the present invention. The control unit A10 inputs the load current output from the current transformer 7 and the power supply voltage obtained by the transformer 8, detects the fundamental reactive current and the harmonic current of the load, and outputs the sum of these two currents. . The load impedance detection unit 11 divides the system voltage E by the fundamental wave current I of the load current from the detected load current and system voltage, and outputs the load impedance Z = E / I. The reference voltage power supply 12 generates and outputs a reference voltage E 0 corresponding to the standard frequency and voltage of the power supply system by a small oscillator or the like. The control unit B13 has a function of dividing the reference voltage E 0 by the load impedance Z, and outputs a signal as a control current I = E 0 / Z. The power failure detection unit 14
At the time of a power failure or a momentary voltage drop, a sudden change in the system voltage, phase or waveform is detected and a signal is output, and the signal is used to momentarily open the switch A15 and momentarily close the switch B16. The switches A and B are high speed switches made of semiconductor.
【００１１】本発明の装置は、電源系統に接続されてい
る平常時においては、負荷電流に応じて制御部Ａ１０の
制御信号によりインバータ５を駆動し、負荷電流中の基
本波無効電力と高調波電流を補償する電力用アクティブ
フイルタとして動作する。一方、停電または瞬時電圧低
下時には、開閉器１を瞬時に開路して上記アクティブフ
イルタがＵＰＳとして動作する。そしてこの時、該ＵＰ
Ｓの出力電力は開閉器１が開路されており電源系統に逆
流出力されることはない。この時の上記各部の動作は、
停電または瞬時電圧の低下を停電検知部１４で検知し、
直ちにスイッチＡ１５を開路するとともにスイッチＢ１
６を閉路し、インバータ５が制御部Ｂ１３の制御信号に
よって駆動しＵＰＳとして動作する。この時負荷２に与
えられるインバータ５の出力電圧Ｅは、負荷インピーダ
ンス検出部１１で得られた負荷インピーダンスＺで基準
電圧を除した値の電流、即ち、ＩS=Ｅ0/Ｚとして出力さ
れるように制御部Ｂ１３で制御し、負荷の状況が変化し
て負荷インピーダンスＺが変化しても、負荷に与えられ
るインバータ５の出力電圧Ｅは、Ｅ＝ＩS・Ｚ として一
定値に保持することができる。The device of the present invention drives the inverter 5 by the control signal of the control unit A10 in accordance with the load current in a normal condition when the power supply system is connected, and the fundamental wave reactive power and the harmonics in the load current are driven. It operates as an active power filter that compensates for current. On the other hand, at the time of power failure or momentary voltage drop, the switch 1 is instantly opened and the active filter operates as UPS. And at this time, the UP
Since the switch 1 is opened, the output power of S is not output backward to the power supply system. The operation of each part at this time is
A power failure or a drop in the instantaneous voltage is detected by the power failure detection unit 14,
Immediately open switch A15 and switch B1
6 is closed, and the inverter 5 is driven by the control signal of the control unit B13 to operate as UPS. At this time, the output voltage E of the inverter 5 applied to the load 2 is output as a current having a value obtained by dividing the reference voltage by the load impedance Z obtained by the load impedance detection unit 11, that is, I S = E 0 / Z. As described above, the output voltage E of the inverter 5 applied to the load is maintained at a constant value as E = I S · Z even when the load condition changes and the load impedance Z changes. You can
【００１２】本発明の装置のＵＰＳ機能としての許容作
動時間は、直流電源４の容量によって定まり、長時間運
転に対しては蓄電池を必要とするが、瞬時停電などごく
短時間の用に供するときは大容量の電解コンデンサ群に
よることもできる。The allowable operating time as the UPS function of the device of the present invention is determined by the capacity of the DC power source 4, and requires a storage battery for long-term operation, but when used for a very short time such as an instantaneous power failure. Can also be a large capacity electrolytic capacitor group.
【００１３】[0013]
【発明の効果】本発明によれば、上記のようにアクティ
ブフイルタとＵＰＳの両機能を制御系とともに一体化で
き、装置全体の小型化と保守、取扱を簡単化し、従来の
ように上記両機能を備えた装置を別々に設置する必要も
なく、装置全体の大幅な小型化によって据付け面積を大
幅に縮小し、かつ大幅な設備費の低減を図ることができ
る。よって、本発明の無停電電源機能を有する電力用ア
クティブフイルタは工業的、実用的にその価値極めて大
なるものがある。As described above, according to the present invention, both the functions of the active filter and the UPS can be integrated with the control system as described above, and the miniaturization, maintenance and handling of the entire apparatus can be simplified, and both functions as in the prior art. Since it is not necessary to separately install the devices equipped with, it is possible to significantly reduce the installation area by significantly downsizing the entire device and significantly reduce the equipment cost. Therefore, the power active filter having the uninterruptible power supply function of the present invention is industrially and practically extremely valuable.
【図１】図１は、本発明の無停電電源機能を有する電力
用アクティブフイルタの一実施例を示す回路構成図であ
る。FIG. 1 is a circuit configuration diagram showing an embodiment of an active power filter having an uninterruptible power supply function of the present invention.
【図２】図２は、本発明の無停電電源機能を有する電力
用アクティブフイルタの、図１に示す制御部の構成図で
ある。FIG. 2 is a configuration diagram of a control unit shown in FIG. 1 of an active power filter having an uninterruptible power supply function of the present invention.
【図３】図３は、無停電電源を有する負荷と並列にアク
ティブフイルタを接続した従来の装置を示す一回路構成
図である。FIG. 3 is a circuit configuration diagram showing a conventional device in which an active filter is connected in parallel with a load having an uninterruptible power supply.
１：開閉器 ２：負荷 ３：従来のアクティブフイルタ ４：直流電源 ５：インバータ ６：制御部 ７：変流器（ＣＴ） ８：変成器（ＰＴ） ９：無停電電源装置（ＵＰＳ） １０：制御部Ａ １１：負荷インピーダンス検出部 １２：基準電圧電源 １３：制御部Ｂ １４：停電検知部 １５：スイッチＡ １６：スイッチＢ 1: Switch 2: Load 3: Conventional active filter 4: DC power supply 5: Inverter 6: Control part 7: Current transformer (CT) 8: Transformer (PT) 9: Uninterruptible power supply (UPS) 10: Control unit A 11: Load impedance detection unit 12: Reference voltage power supply 13: Control unit B 14: Power failure detection unit 15: Switch A 16: Switch B
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森貞 健二 京都府京都市中京区御池通烏丸東入一筋目 仲保利町191番地の４ 上原ビル３階 ニ チコン株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Morisada Kenji Morisada, Kyoto Prefecture Kyoto Prefecture Oike Dori Karasuma Higashiiri 1st Line Nakabori-cho 4 Uehara Building 3F Nichicon Co., Ltd.
Claims (2)
（７）と、変成器（８）と、直流電源（４）とインバー
タ（５）と制御部（６）とからなる無停電電源機能を有
する電力用アクティブフイルタであって、 上記アクティブフイルタを形成するインバータ（５）
は、高調波を発生する負荷（２）と並列接続して開閉器
（１）を介して電源系統に接続され、 平常時は上記開閉器（１）が閉路状態で電源系統に接続
され、変流器（７）と変成器（８）で検出した上記負荷
（２）の電流と電圧を制御部（６）に入力し、 該制御部（６）は、上記検出の電流と電圧によって負荷
電流と逆位相の基本波無効電力と高調波電流を発生させ
るようインバータ（５）を制御して該負荷（２）の基本
波無効電力と発生高調波電流とを相殺してこれを補償
し、 電源系統が停電または瞬時電圧低下時には、上記開閉器
（１）は直ちに開路されて電源系統から開放され、直流
電源（４）から所要電力が供給されてインバータ（５）
により、上記負荷（２）に交流電力を供給して停電補償
し、 電源系統が通常状態に復電時直ちに上記開閉器（１）が
閉路して平常時動作に復帰するようにしたことを特徴と
する無停電電源機能を有する電力用アクティブフイル
タ。1. A switch (1), a load (2), a current transformer (7), a transformer (8), a DC power supply (4), an inverter (5), and a controller (6). (5) An active power filter having an uninterruptible power supply function, which comprises:
Is connected in parallel with the load (2) that generates harmonics and is connected to the power supply system via the switch (1). Normally, the switch (1) is connected to the power supply system in the closed state, The current and voltage of the load (2) detected by the current transformer (7) and the transformer (8) are input to the control unit (6), and the control unit (6) controls the load current by the detected current and voltage. The inverter (5) is controlled so as to generate the fundamental wave reactive power and the harmonic current having the opposite phase, and the fundamental reactive power and the generated harmonic current of the load (2) are canceled to compensate for this. In the event of a power failure or an instantaneous voltage drop in the system, the switch (1) is immediately opened and released from the power system, and the required power is supplied from the DC power source (4) to the inverter (5).
By this, AC power is supplied to the load (2) to compensate for a power failure, and the switch (1) is immediately closed to restore normal operation when the power system returns to a normal state. An active power filter with an uninterruptible power supply function.
波無効電流と高調波電流を検出し、該２つの電流の和を
出力する制御部Ａ（１０）と、上記負荷電流と系統電圧
から負荷インピーダンスを検出する負荷インピーダンス
検出部（１１）と、電源系統の標準電圧に相当する基準
電圧を発生し出力する基準電圧電源（１２）と、該基準
電圧電源の出力電圧を上記検出の負荷インピーダンスで
除した電流を出力する制御部Ｂ（１３）と、系統電圧の
変化により停電または瞬時電圧低下を検知する停電検知
部（１４）と、該検知部の出力信号により停電または瞬
時電圧低下時に開路するスイッチＡ（１５）と、閉路す
るスイッチＢ（１６）とからなり、上記制御部Ａ（１
０）からスイッチＡ（１５）を通じ、また制御部Ｂ（１
３）からはスイッチＢ（１６）を通じてインバータ
（５）の出力電流を制御できるように構成した制御部
（６）を具備したことを特徴とする請求項１記載の無停
電電源機能を有する電力用アクティブフイルタ。2. A control unit A (10) for inputting a load current, detecting a fundamental wave reactive current and a harmonic current contained therein, and outputting a sum of the two currents, the load current and a system voltage. A load impedance detecting section (11) for detecting a load impedance from the reference voltage source, a reference voltage power source (12) for generating and outputting a reference voltage corresponding to the standard voltage of the power supply system, and an output voltage of the reference voltage power source for detecting the load. A control unit B (13) that outputs a current divided by impedance, a power failure detection unit (14) that detects a power failure or an instantaneous voltage drop due to a change in system voltage, and an output signal of the detection unit when a power failure or an instantaneous voltage drop occurs. It is composed of a switch A (15) that opens and a switch B (16) that closes.
0) through the switch A (15) and the control unit B (1
3. The power supply having an uninterruptible power supply function according to claim 1, further comprising a control unit (6) configured to control the output current of the inverter (5) from the switch B (16) from 3). Active filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8071666A JPH09266631A (en) | 1996-03-27 | 1996-03-27 | Power active filter having uninterruptible power supply function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8071666A JPH09266631A (en) | 1996-03-27 | 1996-03-27 | Power active filter having uninterruptible power supply function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09266631A true JPH09266631A (en) | 1997-10-07 |
Family
ID=13467159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8071666A Pending JPH09266631A (en) | 1996-03-27 | 1996-03-27 | Power active filter having uninterruptible power supply function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09266631A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006509489A (en) * | 2002-12-06 | 2006-03-16 | エレクトリック パワー リサーチ インスチテュート インコーポレイテッド | Non-stop power supply and power generation system |
| JP2009201238A (en) * | 2008-02-21 | 2009-09-03 | Meidensha Corp | Instantaneous voltage drop compensation device |
| CN103368182A (en) * | 2013-08-08 | 2013-10-23 | 东南大学 | Modularized multi-machine parallel-connection large-power APF (active power filter) control system and realization method |
-
1996
- 1996-03-27 JP JP8071666A patent/JPH09266631A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006509489A (en) * | 2002-12-06 | 2006-03-16 | エレクトリック パワー リサーチ インスチテュート インコーポレイテッド | Non-stop power supply and power generation system |
| US7701087B2 (en) | 2002-12-06 | 2010-04-20 | Electric Power Research Institute, Inc. | Integrated closed loop control method and apparatus for combined uninterruptible power supply and generator system |
| JP2009201238A (en) * | 2008-02-21 | 2009-09-03 | Meidensha Corp | Instantaneous voltage drop compensation device |
| CN103368182A (en) * | 2013-08-08 | 2013-10-23 | 东南大学 | Modularized multi-machine parallel-connection large-power APF (active power filter) control system and realization method |
| CN103368182B (en) * | 2013-08-08 | 2015-01-21 | 东南大学 | Modularized multi-machine parallel-connection large-power APF (active power filter) control system and realization method |
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