JPS6158432A - Method of switching ac generator and stationary inverter power source - Google Patents
Method of switching ac generator and stationary inverter power sourceInfo
- Publication number
- JPS6158432A JPS6158432A JP59181099A JP18109984A JPS6158432A JP S6158432 A JPS6158432 A JP S6158432A JP 59181099 A JP59181099 A JP 59181099A JP 18109984 A JP18109984 A JP 18109984A JP S6158432 A JPS6158432 A JP S6158432A
- Authority
- JP
- Japan
- Prior art keywords
- inverter power
- power supply
- alternator
- frequency
- switching
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は交流発電機と静止形インバータ電源の切替方
法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for switching between an alternator and a static inverter power source.
（従来の技術）
交流発電機とインバータ電源の無停電切替を実現するに
は瞬時並行運転を必要とする。この瞬時並行運転は一般
の交流発電機間の並行運転と同様、次の手順に従って行
われる。すなわち、後読するインバータ電源あるいは交
流発電機にあって出力電圧及び周波数を母線側のそれに
一致させるべく電圧設定器、周波数設定器の設定値を調
整し、その後ジンクロメ、−夕とか自動同期投入により
同期点をみつけ遮断器′を投７人、並行運転状態に入る
。この並行運転の若干の縦統の後、先行の交流発電機ま
たはインバータ電源の遮断器を開放、これら先行電源を
切放し後続機の単独運転、とし電源切替を完了する。(Conventional technology) Instantaneous parallel operation is required to realize uninterruptible switching between an alternator and an inverter power source. This instantaneous parallel operation is performed according to the following procedure, similar to general parallel operation between alternating current generators. In other words, adjust the settings of the voltage setting device and frequency setting device of the inverter power supply or alternator to be read later so that the output voltage and frequency match those of the bus bar side, and then adjust the setting values of the voltage setting device and frequency setting device by automatic synchronization such as zinc chrome, - evening, etc. Seven people found a synchronization point and threw the circuit breaker', entering parallel operation. After this parallel operation continues for some time, the circuit breaker of the preceding AC generator or inverter power source is opened, these preceding power sources are cut off, and the succeeding machine is operated independently, thus completing the power source switching.
（発明が解決しようとする問題点）
ところで、この従来の電源切替えの場合、一般の交流発
電機並行運転と同様、交流母線側のパワ一部分で同期投
入を行っており、後続機しゃ断器は自身の投入遅れ時間
をも考慮して位相の一致点で実際に入る必要があり、同
期点の検出に工夫を要する等、パワ一部分での同期位相
投入はかなりの面倒な操作でありかつ危険性を伴ってい
る。(Problem to be solved by the invention) By the way, in the case of this conventional power supply switching, similar to general AC generator parallel operation, a part of the power on the AC bus side is synchronously turned on, and the subsequent machine breaker is self-contained. It is necessary to actually turn on the phase at the point where the phases match, taking into account the turn-on delay time of Accompanying.
（問題点を解決するための手段）
この発明は上述の゛パワ一部分における同期位相投入°
′を石うことなしに、交流発電機とインバータ電源の瞬
時並行運転を実現するもので、インバータ電源が先行で
あるか後続であるかの如何を問わず、インバータ電源の
出力周波数を電子回路で調整できるようにしかつ交流発
電機出力を周波数、位相指令として用い並行運転投入前
にインバータ電源出力を周波数、位相ともに交流発電機
のそれに合致せしめ、投入時には電圧だけを合わせれば
よいようにしたことを特徴とする。(Means for Solving the Problems) This invention provides the above-mentioned "synchronous phase input in a part of the power supply".
It realizes instantaneous parallel operation of an alternator and an inverter power source without having to worry about the problem. Regardless of whether the inverter power source is leading or following, the output frequency of the inverter power source can be controlled by an electronic circuit. We made it possible to adjust the frequency and phase of the inverter power supply by using the AC generator output as the frequency and phase commands before turning on parallel operation, so that only the voltage needs to be adjusted when turning on parallel operation. Features.
以下、本発明を図面に示す実施例に基づき具体的に説明
する。同図において、（１）はインバータ電源、（２）
は交流発電機である。インパーク電源（１）は順変換器
（３）と逆変換器（４）よりなり、順変換器（３）はＡ
ＶＲ（５）と電圧設定器（６）を備える。交流発電機（
２）は界磁電流調整用のＡＶＲ（７）と電圧設定器（８
）、かつ駆動用の原動機（９）と回転数を調整し交流出
力周波数を設定する周波数設定器（１０）を付属する。Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings. In the same figure, (1) is an inverter power supply, (2)
is an alternator. The impark power supply (1) consists of a forward converter (3) and an inverse converter (4), and the forward converter (3) is
It is equipped with a VR (5) and a voltage setting device (6). AC generator (
2) is the AVR (7) for adjusting the field current and the voltage setting device (8).
), and a driving prime mover (9) and a frequency setter (10) for adjusting the rotation speed and setting the AC output frequency.
（１１）はこの発明に係る瞬時の並行運転を行うため
の電子回路で、インバータ電源の出力周波数を調整自在
とし、交流発電機のそれに合わせ、制御信号の段階で同
期投入を行うものである。この回路（１１）は、インバ
ータ電源（１）の周波数を設定する周波数設定器（１２
）と、発振器（１３）、周波数比較器（１４）、同期投
入装置（１５） 、周波数切替回路（１６）より６′η
成される。(11) is an electronic circuit for instantaneous parallel operation according to the present invention, in which the output frequency of the inverter power supply is freely adjustable, and synchronization is performed at the control signal stage in accordance with that of the alternator. This circuit (11) includes a frequency setter (12) that sets the frequency of the inverter power supply (1).
), oscillator (13), frequency comparator (14), synchronization device (15), and frequency switching circuit (16).
will be accomplished.
すなわち、インバータ電源の制御周波数信号を、主回路
スイッチの投入前に、交流発電機の出力周波数、位相に
合致せしめ、インバータ電源の交流出力を、交流発電機
のそれと同一位相になるよう調整して、メインの遮断器
投入時には、電圧を合わせるだけで済むようにした。That is, before turning on the main circuit switch, the control frequency signal of the inverter power supply is made to match the output frequency and phase of the alternator, and the AC output of the inverter power supply is adjusted to be in the same phase as that of the alternator. , when the main circuit breaker is closed, it is only necessary to match the voltage.
（作用）
インバータ電源（１）の先行、後続によってその動作に
変りはないが、交流発電機（２）からインバータ電源（
１）へ切替える場合について説明する。(Function) There is no difference in the operation depending on whether the inverter power supply (1) precedes or follows the inverter power supply (1).
The case of switching to 1) will be explained.
交流発電機（２）の出力周波数が設定の周波数例えば６
０七を維持し得なくなりインバータ電源（１）への切替
えを必要とする場合、スイッチ素子（１７）を投入し、
発電機（２）出力周波数ｆ２を電子回路（１１）のフィ
ードバック信号として加える。すなわち、ｆ２信号の投
入以前には、周波数設定器（１２）の設定値のみを発振
器（１３）に加え、従って、発振器（１３）がらは設定
周波数信号が出力され、制御周波数信号切替回路（１６
）を介し、インバータ電源逆変換器（４）の移相信号と
して加えられ、この結果、インバータ電源（１）は、正
弦波フィルター（１８）を経て規定周波数の交流出力を
発生することとなる。 ｆ２信号が投入されると、発振
器（１３）出力周波数、のｆ１信号との間で、比較器（
１４）により比較、差周波数へｆ （Ｈ〜ｆ２）が求め
られ、これが発振器（１３）に加えられる。発振器（１
３）では先の周波数設定器（１２）の設定周波数ｆ３と
、この差周波数信号Δｆとにより、出力周波数信号ｆ１
が発電４ｆｆｌ （２）の出力周波数信号ｆ２に等しく
なるよう調整される。インバータ電源（１）出力周波数
を規制する上記周波数信号ｆ１が発電機（２）の出力周
波数信号ｆ２にほぼ等しくなりΔｆが略零になった時点
で、同期投入装置（１５）が作動する。The output frequency of the alternator (2) is the set frequency, for example 6
07 cannot be maintained and it is necessary to switch to the inverter power supply (1), turn on the switch element (17),
The generator (2) output frequency f2 is applied as a feedback signal to the electronic circuit (11). That is, before inputting the f2 signal, only the setting value of the frequency setter (12) is applied to the oscillator (13), and therefore the oscillator (13) outputs the setting frequency signal and the control frequency signal switching circuit (16)
) and is applied as a phase-shifted signal to the inverter power supply inverter (4), resulting in the inverter power supply (1) generating an AC output at a specified frequency through the sine wave filter (18). When the f2 signal is input, the output frequency of the oscillator (13) is connected to the f1 signal of the comparator (
14), the difference frequency f (H~f2) is determined and applied to the oscillator (13). Oscillator (1
3), the output frequency signal f1 is determined by the set frequency f3 of the frequency setter (12) and this difference frequency signal Δf.
is adjusted so that it is equal to the output frequency signal f2 of the power generation 4ffl (2). When the frequency signal f1 regulating the output frequency of the inverter power source (1) becomes approximately equal to the output frequency signal f2 of the generator (2) and Δf becomes approximately zero, the synchronization device (15) is activated.
すなわち、インバータ電源の制御周波数信号ｆ１と交流
発電機出力の周波数信号ｆ２の位相差を検出、はぼ零に
なった時点で、スイッチ切替信号を出力し、制御局、波
数切替回路（１６）を作動させ、インパーク電源（１）
の制御周波数信号を、交流発電機（２）の出力周波数信
号ｆ２に切替える。すなわち、インパーク電源（１）は
制御信号の段階で同期投入されたことになり、実際の遮
断器（１９）投入時は、電圧のみ合わせればよい。この
ように、インバータ電源（１）は、交流発電機（２）の
発電出力と同位相の追従運転が行われ、電圧を合わせれ
ばいつでも遮断器（１９）は投入可能となり、またこの
遮断器（１９）の投入により、インバータ電源（１）と
交流発電機（２）は並行運転状態となる。すなわち、発
電機側遮断器（２０）を開放し交流発電機（２）を切離
せば、インバータ電源（１）の単独運転となり出力周波
数は周波数設定器（１２）の設定値に応じて調整され、
設定の定格周波数に制御される。That is, the phase difference between the control frequency signal f1 of the inverter power supply and the frequency signal f2 of the alternator output is detected, and when the phase difference becomes almost zero, a switch switching signal is output, and the control station and wave number switching circuit (16) are activated. Activate and impark power supply (1)
is switched to the output frequency signal f2 of the alternator (2). That is, the impark power supply (1) is turned on synchronously at the stage of the control signal, and when the circuit breaker (19) is actually turned on, only the voltage needs to be adjusted. In this way, the inverter power supply (1) is operated in the same phase as the generated output of the alternator (2), and the circuit breaker (19) can be closed at any time as long as the voltages are matched. 19), the inverter power supply (1) and the alternator (2) enter a parallel operation state. That is, if the generator-side circuit breaker (20) is opened and the alternator (2) is disconnected, the inverter power supply (1) will operate independently and the output frequency will be adjusted according to the setting value of the frequency setting device (12). ,
Controlled to the set rated frequency.
なお、インバータ電源（１ンから交流発電機（２）へ切
替える場合も全く同様であり、交流発電機（２）の出力
周波数が定格周波数近くにあることを確認のうえ、スイ
ッチ素子（１７）を投入し、発電機（２）の出力周波数
ｆ２をフィードバック信号として加え、インバータ電源
（１）の本来の制御周波数信号ｆ１との間で差を求め、
この差周波数信号に基づき先のインバータ電源周波数信
号ｆｌを修正、発電機出力周波数ｆ２に合わせ、かつ位
相の一致したところでインバータ電源（１）の制御周波
数を上記発電機出力周波数ｆ２に切替え、インバータ電
源（１）を交流発電機（２）に追従運転させる。この追
従運転に入って後、発電機側遮断器（２０）を投入、並
行運転を行い、かつインバータ電源側遮断器（１９）を
解放し、インバータ電源（１）を切離した交流発電機（
２）だけの単独運転となる。The same is true when switching from the inverter power supply (1) to the alternator (2), and after confirming that the output frequency of the alternator (2) is close to the rated frequency, switch the switch element (17). input, add the output frequency f2 of the generator (2) as a feedback signal, and find the difference between it and the original control frequency signal f1 of the inverter power supply (1),
Based on this difference frequency signal, the previous inverter power supply frequency signal fl is corrected to match the generator output frequency f2, and when the phases match, the control frequency of the inverter power supply (1) is switched to the above generator output frequency f2, and the inverter power supply (1) is caused to follow the alternator (2). After entering this follow-up operation, the generator side breaker (20) is turned on to perform parallel operation, and the inverter power source side breaker (19) is released to disconnect the inverter power source (1) from the alternator (
2) will be operated independently.
（発明の効果）
交流発電機とインバータ電源の無停電切替に当り、イン
バータ電源の制御周波数信号を交流発電機の出力周波数
に合わせ、位相の一致したところで制御周波数信号を発
電機出力周波数信号に切替え、インバータ電源を交流発
電機に追従運転させ、その後出力側遮断器の投入、開放
の操作を行うもので、従来の遮断器によるパワ一部分で
の同期位相投入の問題を、解決することができ、同期切
替えの安全性に寄与するところ大である。(Effect of the invention) For uninterruptible switching between the alternator and the inverter power source, the control frequency signal of the inverter power source is matched to the output frequency of the alternator, and when the phases match, the control frequency signal is switched to the generator output frequency signal. , the inverter power supply follows the alternator, and then the output side circuit breaker is closed and opened, which solves the problem of synchronous phase closing at a portion of the power caused by conventional circuit breakers. This greatly contributes to the safety of synchronous switching.
図面は本発明の実施例のブロック線図である。 The drawing is a block diagram of an embodiment of the invention.
Claims (1)
し、交流発電機の出力周波数を検出し静止形インバータ
電源の制御周波数信号との間で差周波数を求め、この差
周波数に基づき上記インバータ電源制御周波数信号を調
整、上記発電機出力周波数との一致をとり、更に両者の
位相差が零になったところで、上記静止形インバータ電
源の制御を、上記制御周波数信号から交流発電機の出力
周波数信号に切替え、静止形インバータ電源を交流発電
機に追従運転させて後、交流発電機、静止形インバータ
電源のいずれか一方の側の遮断器を投入、並行運転を行
い、かつ他方の側の遮断器を開放、単独運転となし、切
替えを完了したことを特徴とする交流発電機と静止形イ
ンバータ電源の切替方法。1. When switching between an alternator and a static inverter power supply, detect the output frequency of the alternator, find the difference frequency between it and the control frequency signal of the static inverter power supply, and set the inverter power supply control frequency based on this difference frequency. Adjust the signal to match the output frequency of the generator, and when the phase difference between the two becomes zero, switch the control of the static inverter power supply from the control frequency signal to the output frequency signal of the alternator. , after making the static inverter power supply follow the alternator, turn on the circuit breaker on either side of the alternator or static inverter power supply, perform parallel operation, and open the circuit breaker on the other side. , a method for switching between an alternator and a static inverter power supply, characterized in that switching is completed without independent operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59181099A JPS6158432A (en) | 1984-08-29 | 1984-08-29 | Method of switching ac generator and stationary inverter power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59181099A JPS6158432A (en) | 1984-08-29 | 1984-08-29 | Method of switching ac generator and stationary inverter power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6158432A true JPS6158432A (en) | 1986-03-25 |
Family
ID=16094815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59181099A Pending JPS6158432A (en) | 1984-08-29 | 1984-08-29 | Method of switching ac generator and stationary inverter power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6158432A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62244230A (en) * | 1986-04-14 | 1987-10-24 | 株式会社日立製作所 | Inverter for parallel driving of internal conbustion generators |
| US5889219A (en) * | 1995-11-15 | 1999-03-30 | Sumitomo Electric Industries, Ltd. | Superhard composite member and method of manufacturing the same |
| US6261329B1 (en) | 1998-02-26 | 2001-07-17 | Sumitomo Electric Industries, Ltd. | Diamond sintered body having high strength and high wear resistance, and tool including the same |
| US7553350B2 (en) | 2005-07-26 | 2009-06-30 | Sumitomo Electric Industries, Ltd. | High-strength and highly-wear-resistant sintered diamond object and manufacturing method of the same |
| JP2010115097A (en) * | 2008-11-10 | 2010-05-20 | Toshiba Corp | Power supply system including power storage device and power generator and control method thereof |
| JP2012525814A (en) * | 2009-04-30 | 2012-10-22 | ジーイー・アビエイション・システムズ・エルエルシー | Method and system for a non-interrupting power switching converter |
-
1984
- 1984-08-29 JP JP59181099A patent/JPS6158432A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62244230A (en) * | 1986-04-14 | 1987-10-24 | 株式会社日立製作所 | Inverter for parallel driving of internal conbustion generators |
| US5889219A (en) * | 1995-11-15 | 1999-03-30 | Sumitomo Electric Industries, Ltd. | Superhard composite member and method of manufacturing the same |
| US6261329B1 (en) | 1998-02-26 | 2001-07-17 | Sumitomo Electric Industries, Ltd. | Diamond sintered body having high strength and high wear resistance, and tool including the same |
| US7553350B2 (en) | 2005-07-26 | 2009-06-30 | Sumitomo Electric Industries, Ltd. | High-strength and highly-wear-resistant sintered diamond object and manufacturing method of the same |
| JP2010115097A (en) * | 2008-11-10 | 2010-05-20 | Toshiba Corp | Power supply system including power storage device and power generator and control method thereof |
| JP2012525814A (en) * | 2009-04-30 | 2012-10-22 | ジーイー・アビエイション・システムズ・エルエルシー | Method and system for a non-interrupting power switching converter |
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