JPH02261061A - Control circuit system for rectifier - Google Patents
Control circuit system for rectifierInfo
- Publication number
- JPH02261061A JPH02261061A JP7520689A JP7520689A JPH02261061A JP H02261061 A JPH02261061 A JP H02261061A JP 7520689 A JP7520689 A JP 7520689A JP 7520689 A JP7520689 A JP 7520689A JP H02261061 A JPH02261061 A JP H02261061A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- rectifier
- tap
- control circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 abstract description 6
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 241000931705 Cicada Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Rectifiers (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は整流装置の制御回路方式に関するものである。[Detailed description of the invention] "Industrial application field" The present invention relates to a control circuit system for a rectifier.
「従来の技術」
従来の大容量整流装置の回路構成を第４図、に示ず。第
４図に示す如く交流電源１の交流電力をタップ切換器付
変圧器２を介１−てサイリスタ整流装置３で直流電力に
変換し負荷４に供給している。"Prior Art" The circuit configuration of a conventional large-capacity rectifier is not shown in FIG. As shown in FIG. 4, AC power from an AC power supply 1 is converted into DC power by a thyristor rectifier 3 via a transformer 2 with a tap changer and is supplied to a load 4.
一方サイリスク整流装置３は位相制御回路６により所定
の電力を負荷４に供給ずべく位相制御されており、他方
タップ切換器付変圧器２は負荷４に供給される電圧に応
じて入力力率の低下を防ぐためタップ切換器操作回路５
により開閉器７か開放され前記変圧器２が蝉電圧状態に
おいてタップの切換が行われている。On the other hand, the phase of the SiRisk rectifier 3 is controlled by a phase control circuit 6 so as not to supply a predetermined power to the load 4, and on the other hand, the transformer with tap changer 2 adjusts the input power factor according to the voltage supplied to the load 4. Tap changer operation circuit 5 to prevent decrease
As a result, the switch 7 is opened and the taps are switched while the transformer 2 is in a cicada voltage state.
［発明が解決しようとする課題］
しかしながら従来の回１！ｆＨＭ成においては、タップ
切換器を無電圧状態で切換える必要がある為、サイリス
タ整流装置３の出力電圧値に応じて、該サイリスタ整流
装置３を一旦停止させ、かつ開閉器７を開放したうえで
タップ切換器を操作する必要があった。また位相制御回
路６において定電流制御方式、及び定電力制御方式か採
用されている場合においては、サイリスタ整流装置３の
出力電圧の変化が短時間の内に多頻度になる為、その都
度開閉器７を開放しタップを切換えることは負荷４を流
れる電流を遮断することとなり定電流及び定電力を得ら
れなくなってしまう。この為タップ切換器操作回路５を
動作させ位相制御回路６の操作たけにより、サイリスク
整流装置３の出力電圧を変化させることになり、タップ
切換器付変圧器２の入力力率も同時に変化することとな
る６「課題を解決するための手段」
前述の課題を解決する手段として本発明において、入力
電源力率とサイリスタ整流装置３の制御位相角か等価で
あることを利用している。本発明において第１図に示す
如くサイリスク整流装置３の前段に負荷時タップ切換器
付変圧器２′を使用している。該負荷時タップ切換器付
変圧器２′は負荷時タップ切換器操作回路５′に接続さ
れている。一方サイリスタ整流装置３は位相制御回路６
に接続され該位相制御回路６から新たに設けた位相差検
出回路８に接続されている。位相差検出回路８は第２図
に示す如く端子８３を介して位相制御回路６と比較回路
８１が接続され、他の入力端子には基準口１？８８２か
接続されており出力端子は２つの端子８４．８５を介し
て負荷時タップ切換器操作回路５′に接続されている。[Problem to be solved by the invention] However, the conventional method 1! In the fHM configuration, it is necessary to switch the tap changer in a no-voltage state, so depending on the output voltage value of the thyristor rectifier 3, the thyristor rectifier 3 is temporarily stopped and the switch 7 is opened. It was necessary to operate the tap changer. In addition, when a constant current control method or a constant power control method is adopted in the phase control circuit 6, the output voltage of the thyristor rectifier 3 changes frequently within a short period of time. Opening 7 and switching the tap cuts off the current flowing through the load 4, making it impossible to obtain constant current and constant power. For this reason, by operating the tap changer operation circuit 5 and operating the phase control circuit 6, the output voltage of the Cyrisk rectifier 3 will be changed, and the input power factor of the transformer with tap changer 2 will also change at the same time. 6 ``Means for Solving the Problems'' As a means for solving the above-mentioned problems, the present invention utilizes the fact that the input power source power factor and the control phase angle of the thyristor rectifier 3 are equivalent. In the present invention, as shown in FIG. 1, a transformer 2' with an on-load tap changer is used upstream of the silice rectifier 3. The on-load tap changer transformer 2' is connected to an on-load tap changer operating circuit 5'. On the other hand, the thyristor rectifier 3 has a phase control circuit 6
The phase control circuit 6 is connected to a newly provided phase difference detection circuit 8. As shown in FIG. 2, the phase difference detection circuit 8 is connected to the phase control circuit 6 and the comparator circuit 81 via a terminal 83, and the other input terminal is connected to either the reference port 1?882, and has two output terminals. It is connected to the on-load tap changer operating circuit 5' via terminals 84,85.
一方賃荷時タップ切換器操作回路５′より前述の位相差
検出回路８にタップ位置信号か帰還するように接続され
ている。On the other hand, the tap changer operating circuit 5' is connected to the above-mentioned phase difference detection circuit 8 so as to feed back a tap position signal.
「作用」 本発明の作用を第３図タイムチャートにより説明する。"action" The operation of the present invention will be explained with reference to the time chart in FIG.
位相制御回路６はサイリスタ整流装置３の出力電圧を制
御するとともに該位相制御回路６の内部信号である誤差
信号ａが位相差検出回路８の比較回路８１の一端に接続
されている。該比較回路８１により基準回路８２からの
第１基準信号ｂ（最大位相角信号）、第２基準信号Ｃ（
最低位相角信号）とを比較することにより誤差信号ａが
第１基準信号すを越える場合タップ上げ信号ｄか端子８
４を介して、また第２基準信号Ｃを下まわる場合タップ
下げ信号ｅが端子８５を介してそれぞれ負荷時タップ切
換器操作回路５′に出力され負荷時タップ切換器付変圧
器２′のタップを変化させる。また前述の負荷時タップ
切換器操作回路５′からの帰還信号であるタップ位置信
号ｆか最大タップ位置を示していればタップ上げ信号ｄ
は出力せず一方最低タップ位置を示していれば′タップ
下げ信号ｅは出力されない。The phase control circuit 6 controls the output voltage of the thyristor rectifier 3, and the error signal a, which is an internal signal of the phase control circuit 6, is connected to one end of the comparison circuit 81 of the phase difference detection circuit 8. The comparison circuit 81 compares the first reference signal b (maximum phase angle signal) and the second reference signal C (maximum phase angle signal) from the reference circuit 82.
When the error signal a exceeds the first reference signal (minimum phase angle signal), the tap increase signal d or terminal 8
4, and if it is lower than the second reference signal C, a tap lowering signal e is outputted via the terminal 85 to the on-load tap changer operation circuit 5', and the tap of the on-load tap changer equipped transformer 2' is outputted. change. In addition, if the tap position signal f, which is the feedback signal from the tap changer operation circuit 5' on load, is the maximum tap position, the tap up signal d is received.
is not output and, on the other hand, if it indicates the lowest tap position, the tap down signal e is not output.
「実施例」
本発明による一実施例を第１図に示す。第１図において
１は交流電源、２′は負荷時タップ切換器付変圧器（以
下変圧器と略す。）、３はサイリスク整流装置、４は負
荷、５′は負荷時タップ切換器操作回路（以下操作回路
と略す。）、７は開閉器である。６は位相制御回路であ
り本発明により新たに設けた比較回路８１と基準回路８
２とを具備した位相差検出回路に接続されている。本発
明に於ては入力電源力率とサイリスタ整流装置３の制御
位相角が等価であることを利用している。"Example" An example according to the present invention is shown in FIG. In Fig. 1, 1 is an AC power supply, 2' is a transformer with on-load tap changer (hereinafter referred to as a transformer), 3 is a silice rectifier, 4 is a load, and 5' is an on-load tap changer operation circuit ( (hereinafter abbreviated as operation circuit), 7 is a switch. Reference numeral 6 denotes a phase control circuit, which includes a comparison circuit 81 and a reference circuit 8 newly provided according to the present invention.
2 and a phase difference detection circuit. The present invention utilizes the fact that the input power source power factor and the control phase angle of the thyristor rectifier 3 are equivalent.
第１図及び第２図位相差検出回路のブロック図及び第３
図タイムチャートにおいて説明する。位相制御回路６の
誤差信９ ａはＰＩ制御の結果であり信号の値はサイリ
スタ整流装置の位相制御角と等価である。この為誤差信
号ａ、を基準回路８２に於て設定された数人位相角を示
す第１基準信号す及び最低位相角を示す第２基準信号Ｃ
と比咬回路８１に於て比較することにより第１基準信号
すを越えた場合タップ上げ信号ｄか、第２基準信号Ｃを
下まわった場合タッグ下げ信号ｅが各々操作回路５′に
与えられる。しかしながら操作回路５′より位相差検出
回路６に帰還されているタップ位置信号ｆが最高タップ
位置を示す場合タップ上げ信号ｄは、一方最低タップ位
置を示す場合タップ下げ信号ｅは出力されない。前述操
作回＃１５′は該いずれか一方の信号ｄもしくは信号ｅ
により変圧器２′のタップ切換を行う。この動作により
変圧器２′の入力力率は基準回路８２によって設定され
た力率範囲におさまることとなる。Figures 1 and 2 are block diagrams of the phase difference detection circuit, and Figure 3.
This will be explained using the time chart shown in the figure. The error signal 9a of the phase control circuit 6 is the result of PI control, and the value of the signal is equivalent to the phase control angle of the thyristor rectifier. For this purpose, the error signal a is set in the reference circuit 82 as a first reference signal C indicating the phase angle and a second reference signal C indicating the lowest phase angle.
By comparison in the ratio circuit 81, if the first reference signal C is exceeded, a tap up signal d is given, or if it is below the second reference signal C, a tag down signal e is given to the operating circuit 5'. . However, when the tap position signal f fed back from the operating circuit 5' to the phase difference detection circuit 6 indicates the highest tap position, the tap up signal d is not output, whereas when it indicates the lowest tap position, the tap down signal e is not output. The aforementioned operation #15' is performed by either the signal d or the signal e.
Tap switching of the transformer 2' is carried out by. This operation causes the input power factor of the transformer 2' to fall within the power factor range set by the reference circuit 82.
本実施例は位相制御回路６がアナログ制御方式について
述べであるか、デジタル制御方式においても位相検出回
路８をデジタル信号処理することにより同一の結果か得
られる。In this embodiment, the phase control circuit 6 is based on an analog control system, but even in a digital control system, the same result can be obtained by performing digital signal processing on the phase detection circuit 8.
「発明の効果」
本発明を採用することにより以下の様な効果が得られる
。"Effects of the Invention" By adopting the present invention, the following effects can be obtained.
（１）負荷時タップ切換器付変圧器２′によりサイリス
タ整流装置３の出力電圧の変化にかかわらず該サイリス
タ整流装置３を一旦停止させる必要か無く同時に開閉器
７の開閉も不要となる。(1) With the transformer 2' with tap changer on load, there is no need to temporarily stop the thyristor rectifier 3 regardless of changes in the output voltage of the thyristor rectifier 3, and at the same time there is no need to open or close the switch 7.
これにより位相制御回路６に於て定電流制御方式或いは
定電力制御方式を用いる場合においても連続的にタップ
を切換えることか可能となる。This makes it possible to continuously switch taps even when a constant current control method or a constant power control method is used in the phase control circuit 6.
（２）位相差検出回路８の動作により負荷時タップ切換
器付変圧器２′の入力力率は、該位相差検出回路８の第
１基準値及び第２基準値に設定した範囲に抑えることが
可能となる。(2) By the operation of the phase difference detection circuit 8, the input power factor of the transformer with on-load tap changer 2' is suppressed within the range set by the first reference value and the second reference value of the phase difference detection circuit 8. becomes possible.
（３）従来の位相制御回路６に新たに位相差検出回路８
を負荷するのみですみ既設の整流装置に適用が可能であ
る。(3) A new phase difference detection circuit 8 is added to the conventional phase control circuit 6.
It can be applied to existing rectifiers as it only requires loading.
第１図から第３図は本発明の−・実施例を示し、第１図
は整流装置のブロック図、第２図は位相検出回路のブロ
ック図、第３図は位相差検出回路のタイムチャート、第
４図は従来の整流装置のブロック図である。
１ ・・・交流電源、
２ ・・・タップ切換器付変圧器、
２′・・・負荷時タップ切換器付変圧器、３ ・・・サ
イリスタ整流装置、
４ ・・・負荷、
５ ・・・タップ切換器操作回路、
５′・・・負荷時タップ切換器操作回路、６ ・・・位
相制御回路、
７ ・・・開閉器、
８ ・・・位相差検出回路。1 to 3 show embodiments of the present invention, FIG. 1 is a block diagram of the rectifier, FIG. 2 is a block diagram of the phase detection circuit, and FIG. 3 is a time chart of the phase difference detection circuit. , FIG. 4 is a block diagram of a conventional rectifier. 1...AC power supply, 2...Transformer with tap changer, 2'...Transformer with tap changer on load, 3...Thyristor rectifier, 4...Load, 5... Tap changer operation circuit, 5'... Tap changer operation circuit under load, 6... Phase control circuit, 7... Switch, 8... Phase difference detection circuit.
Claims (1)
圧器（以下変圧器と略す。）２′を有し、該変圧器２′
に接続される位相制御回路６に比較回路８１及び基準回
路８２からなる位相差検出回路８を新たに設け、該位相
差検出回路８の出力を負荷時タップ切換器操作回路５′
に接続し、一方該負荷時タップ切換器操作回路５′より
位相差検出回路８へタップ位置信号を帰還させるべく接
続したことを特徴とする整流装置の制御回路方式。A transformer with an on-load tap changer (hereinafter referred to as a transformer) 2' is provided before the thyristor rectifier 3, and the transformer 2'
A phase difference detection circuit 8 consisting of a comparator circuit 81 and a reference circuit 82 is newly installed in the phase control circuit 6 connected to the phase control circuit 6, and the output of the phase difference detection circuit 8 is connected to the on-load tap changer operation circuit 5'.
A control circuit system for a rectifier, characterized in that the on-load tap changer operation circuit 5' is connected to feed back a tap position signal to the phase difference detection circuit 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7520689A JPH02261061A (en) | 1989-03-29 | 1989-03-29 | Control circuit system for rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7520689A JPH02261061A (en) | 1989-03-29 | 1989-03-29 | Control circuit system for rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02261061A true JPH02261061A (en) | 1990-10-23 |
Family
ID=13569491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7520689A Pending JPH02261061A (en) | 1989-03-29 | 1989-03-29 | Control circuit system for rectifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02261061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005016116A1 (en) * | 2005-04-08 | 2006-10-19 | Brumberg Leuchten Gmbh & Co. Kg | Light for producing decorative light effects comprises a housing having openings for waveguides |
-
1989
- 1989-03-29 JP JP7520689A patent/JPH02261061A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005016116A1 (en) * | 2005-04-08 | 2006-10-19 | Brumberg Leuchten Gmbh & Co. Kg | Light for producing decorative light effects comprises a housing having openings for waveguides |
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