JPH04266A - Direct current controller of rectification device - Google Patents
Direct current controller of rectification deviceInfo
- Publication number
- JPH04266A JPH04266A JP9854490A JP9854490A JPH04266A JP H04266 A JPH04266 A JP H04266A JP 9854490 A JP9854490 A JP 9854490A JP 9854490 A JP9854490 A JP 9854490A JP H04266 A JPH04266 A JP H04266A
- Authority
- JP
- Japan
- Prior art keywords
- current
- rectifier
- transformer
- direct current
- accuracy
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005518 electrochemistry Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 230000009474 immediate action Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Rectifiers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、例えば直流大電流を必要とする電気化学に
用いられる整流装置に係り、整流装置の直流大電流の検
出精度を高めて安定した制御を営むための整流装置の直
流電流制御装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rectifier used for example in electrochemistry that requires a large DC current, and the present invention relates to a rectifier used in electrochemistry that requires a large DC current. The present invention relates to a DC current control device for a rectifier for controlling.
（従来の技術）
電気化学用では直流大電流を必要とし、かつ生産量がそ
の直流大電流に比例するところから整流装置の直流電流
を検出し、設定値と比較の上、電流制御ユニットを介し
て定電流制御を行なうのが一般的であり、このため、直
流大電流の検出は極めて重要となる。(Prior technology) Electrochemical applications require a large DC current, and since the production volume is proportional to the large DC current, the DC current of the rectifier is detected, compared with a set value, and then It is common to perform constant current control using a constant current control, and for this reason, detection of large DC current is extremely important.
第２図は例えば特公昭５３−４ＱＬＩＬ号公報に示され
た従来の整流装置の直流電流制御装置を示すもので、整
流器用変圧器（１）と整流器（２）で交流入力を直流に
変換し、負荷（３）に直流電流を供給する。この直流電
流を高精度の直流変流器（５）および制御部（４］ に
て検出しその出力を直流電流計（７）で測定すると共に
、絶縁変換器（１４）で制御に必要な信号レベルＣＤに
変換し、設定値ＲＥＦと比較の上、電流制御ユニット（
１２）を介して定電流制御を行なうように構成されてい
る。Figure 2 shows a conventional DC current control device for a rectifier, as disclosed in, for example, Japanese Patent Publication No. 53-4QLIL, in which AC input is converted to DC using a rectifier transformer (1) and a rectifier (2). , supplies direct current to the load (3). This DC current is detected by a high-precision DC transformer (5) and a control unit (4), and its output is measured by a DC ammeter (7), and an isolation converter (14) is used to generate signals necessary for control. Convert it to level CD, compare it with the set value REF, and compare it with the current control unit (
12) to perform constant current control.
また、第３図は他の従来例による整流装置の電流制御装
置を示し、図において、（１） 、 （２） 、 （３
）は第２図と同様な整流器用変圧器、整流器および負荷
を示し、交流変流器（８）、補助変圧器（１１）で整流
器用変圧器（１）の交流側電流を検出し、整流器（９）
で整流した出力を直流電流計（１０）で測定すると共に
、絶縁変換器（１３）の出力を設定値と比較し電流制御
ユニット（１２）に入力するようにして第２図に示す直
流変流器（５）を不用としたものである。Moreover, FIG. 3 shows a current control device for a rectifier according to another conventional example, and in the figure, (1), (2), (3
) shows the rectifier transformer, rectifier, and load similar to Fig. 2, and the AC current of the rectifier transformer (1) is detected by the AC current transformer (8) and the auxiliary transformer (11), and the rectifier (9)
The rectified output is measured with a DC ammeter (10), and the output of the insulation converter (13) is compared with the set value and inputted to the current control unit (12), resulting in the DC transformation shown in Figure 2. This eliminates the need for container (5).
従来の整流装置の直流電流制御装置は以上のように構成
されているので、第２図に示す如く高精度の直流変流器
（５）を使用した方式では、ホール素子などの電子部品
を多数使用しているため、故障の確率が高く、また、第
３図に示す如く上記直流変流器（５）を不用とした方式
では、整流器用変圧器（１）の励磁電流などの影響を受
けて検出精度が悪くなるなどの問題点があった。Since the DC current control device of a conventional rectifier is configured as described above, the method using a high-precision DC current transformer (5) as shown in Figure 2 requires a large number of electronic components such as Hall elements. In addition, as shown in Figure 3, in the system that does not require the DC transformer (5), the DC current transformer (5) is affected by the excitation current of the rectifier transformer (1). There were problems such as poor detection accuracy.
この発明は上記のような問題点を解消するためになされ
たもので、信頼性及び検出精度を高めることができると
共に、安定した制御ができる整流装置の直流電流制御装
置を得ることを目的とする。This invention was made in order to solve the above-mentioned problems, and aims to provide a DC current control device for a rectifier that can improve reliability and detection accuracy and perform stable control. .
〔課題を解決するための手段）
この発明に係る整流装置の直流電流制御装置は、整流装
置から出力される直流電流を高精度に検出するための直
流変流器を有する第１の系と、上記整流装置へ入力され
る交流側電流を計測して整流装置の直流電流を検出する
第２の系を備えると共に、通常は上記′ｓ１の系による
直流電流の検出に基づいて定電流制御し、上記直流変流
器の故障時には整流装置の運転を停止することなく、交
流側電流を計測して整流装置の直流電流を検出する第２
の系に切換え、安定した定電流制御を行う切換手段を備
えたものである。[Means for Solving the Problems] A DC current control device for a rectifier according to the present invention includes a first system having a DC transformer for detecting a DC current output from the rectifier with high accuracy; a second system that measures the AC side current input to the rectifier to detect the DC current of the rectifier, and usually performs constant current control based on the detection of the DC current by the system 's1; A second device that measures the AC side current and detects the DC current of the rectifier without stopping the operation of the rectifier when the DC transformer fails.
The system is equipped with a switching means that performs stable constant current control.
この発明においては、直流変流器の故障時に整流装置の
運転を停止することなく、整流器用変圧器の交流側電流
を計測して整流装置の直流電流を検出する方式に自動的
に切換え、安定した制御ができるようになされている。In this invention, when a DC current transformer fails, the system automatically switches to a method that measures the AC side current of the rectifier transformer and detects the DC current of the rectifier without stopping the operation of the rectifier. The system is designed to allow for controlled control.
〔実施例］
以下、この発明の一実施例を第１図に基づいて説明する
。第２図及び′ｔＳ３図と同一部分は同一符号を付して
示す第１図において、本実施例における整流装置の直流
電流制御装置は、第２図に示す如く、整流装置（１）の
直流電流の検出に基づいて出力を制御する制御系と、第
３図に示す如く、整流装置（１）の交流側電流の検出に
基づいて出力を制御する制御系の両者の構成を備えると
共に、絶縁変換器（１３）と（１４）の偏差が設定値以
内の時に閉じる接点（１５）と絶縁変換器（１３）と（
１４）の偏差が設定値を超えた時に閉じる接点（１６）
を備えて、直流変流器（５）の故障時に整流装置の運転
を停止することなく、整流器用変圧器（１）の交流側電
流を計測して整流装置（１）の直流電流を検出する方式
に自動的に切換え、安定した制御ができるようになされ
ている。[Example] Hereinafter, an example of the present invention will be described based on FIG. 1. In FIG. 1, parts that are the same as those in FIG. 2 and 'tS3 are given the same reference numerals. It has the configuration of both a control system that controls the output based on the detection of current and a control system that controls the output based on the detection of the AC side current of the rectifier (1) as shown in FIG. A contact (15) that closes when the deviation between the converters (13) and (14) is within the set value, and an isolated converter (13) and (
Contact (16) that closes when the deviation of 14) exceeds the set value
to detect the DC current of the rectifier (1) by measuring the AC side current of the rectifier transformer (1) without stopping the operation of the rectifier when the DC current transformer (5) fails. The method is automatically switched to ensure stable control.
すなわち、第１図構成において、通常の運転では、高精
度の直流変換器（５）及び制御部（４）で整流装置の直
流電流を高精度に検出し、その出力を絶縁変換器（１４
）を介して電流制御ユニット（１２）に与えて精度の高
い定電流制御を行なう。一方、高精度の直流変流器（５
）が故障した時は、絶縁変換器（１３）と（１４）の出
力を図示していない比較器により常時比較しておき、そ
の偏差が設定値を超えたことで故障の判定を行ない、直
ちに接点（１６）を閉じ、交流変流器（８）、補助変圧
器（１１）で検出し整流器（９）で整流した出力を絶縁
変換器（１３）を介して電流制御ユニット（１２）に与
え、通常の運転より若干精度が劣るものの安定した制御
を行う。That is, in the configuration shown in FIG. 1, during normal operation, the high-precision DC converter (5) and the control unit (4) detect the DC current of the rectifier with high precision, and the output is sent to the insulating converter (14).
) to the current control unit (12) to perform highly accurate constant current control. On the other hand, a high-precision DC current transformer (5
) is out of order, the outputs of the insulating converters (13) and (14) are constantly compared using a comparator (not shown), and when the deviation exceeds the set value, a failure is determined and immediate action is taken. The contact (16) is closed, and the output detected by the AC current transformer (8) and auxiliary transformer (11) and rectified by the rectifier (9) is given to the current control unit (12) via the isolation converter (13). , performs stable control, although the accuracy is slightly lower than normal operation.
（発明の効果〕
以上のように、この発明によれば、整流装置から出力さ
れる直流電流を高精度に検出するための直流変流器を有
する第１の系と、上記整流装置へ入力される交流側電流
を計測して整流装置の直流電流を検出する第２の系を備
え、切換手段により、通常は上記第１の系による直流電
流の検出に基づいて定電流制御し、高精度の直流変流器
が故障した場合には第２の系に切換えて整流装置の運転
を停止することなく安定した制御を行うことが出来る。(Effects of the Invention) As described above, according to the present invention, there is provided a first system having a DC transformer for detecting the DC current outputted from the rectifier with high accuracy, and a DC current input to the rectifier. It is equipped with a second system that measures the AC side current of the rectifier and detects the DC current of the rectifier, and the switching means performs constant current control based on the detection of the DC current by the first system. If the DC transformer fails, it is possible to switch to the second system and perform stable control without stopping the operation of the rectifier.
第１図はこの発明の一実施例による構成図、第２図と第
３図は従来例を示し、第２図は高精度の直流変流器を使
用した構成図、第３図は直流変流器を不用とした構成図
をそれぞれ示す。
図中、（１）は整流器用変圧器、（２） は整流器、（
３）は負荷、（５）は直流変換器、（１２）は定電流ユ
ニット、（８）は交流変流器。
なお、各図中、同一符号は同一または相当部分ヒエ」Fig. 1 is a block diagram according to an embodiment of the present invention, Figs. 2 and 3 show conventional examples, Fig. 2 is a block diagram using a high-precision DC current transformer, and Fig. 3 is a block diagram using a DC transformer. The configuration diagrams that do not require flow vessels are shown in each case. In the figure, (1) is the rectifier transformer, (2) is the rectifier, (
3) is a load, (5) is a DC converter, (12) is a constant current unit, and (8) is an AC current transformer. In addition, the same symbols in each figure indicate the same or corresponding parts.
Claims (1)
めの直流変流器を有する第１の系と、上記整流装置へ入
力される交流側電流を計測して整流装置の直流電流を検
出する第２の系を備えると共に、通常は上記第１の系に
よる直流電流の検出に基づいて定電流制御し、上記直流
変流器の故障時には整流装置の運転を停止することなく
、交流側電流を計測して整流装置の直流電流を検出する
第２の系に切換え、安定した定電流制御を行う切換手段
を備えたことを特徴とする整流装置の直流電流制御装置
。A first system having a DC current transformer for detecting the DC current output from the rectifier with high accuracy, and measuring the AC side current input to the rectifier to detect the DC current of the rectifier. In addition to providing a second system, the constant current is normally controlled based on the detection of the DC current by the first system, and when the DC current transformer fails, the AC side current is controlled without stopping the operation of the rectifier. A DC current control device for a rectifier, characterized in that it is equipped with switching means that performs stable constant current control by switching to a second system that measures and detects the DC current of the rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9854490A JP2922575B2 (en) | 1990-04-13 | 1990-04-13 | DC current controller for rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9854490A JP2922575B2 (en) | 1990-04-13 | 1990-04-13 | DC current controller for rectifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04266A true JPH04266A (en) | 1992-01-06 |
| JP2922575B2 JP2922575B2 (en) | 1999-07-26 |
Family
ID=14222631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9854490A Expired - Lifetime JP2922575B2 (en) | 1990-04-13 | 1990-04-13 | DC current controller for rectifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2922575B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264071A (en) * | 1990-06-13 | 1993-11-23 | General Electric Company | Free standing diamond sheet and method and apparatus for making same |
| US8406538B2 (en) | 2010-05-14 | 2013-03-26 | Ricoh Company, Limited | Image processing apparatus and image processing method |
| US8699805B2 (en) | 2010-05-07 | 2014-04-15 | Ricoh Company, Limited | Image processing apparatus and image processing method |
| US8817346B2 (en) | 2010-03-18 | 2014-08-26 | Ricoh Company, Limited | Image processing apparatus, image processing method, and image forming apparatus for reading code data rotated at 180 degrees |
-
1990
- 1990-04-13 JP JP9854490A patent/JP2922575B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264071A (en) * | 1990-06-13 | 1993-11-23 | General Electric Company | Free standing diamond sheet and method and apparatus for making same |
| US8817346B2 (en) | 2010-03-18 | 2014-08-26 | Ricoh Company, Limited | Image processing apparatus, image processing method, and image forming apparatus for reading code data rotated at 180 degrees |
| US8699805B2 (en) | 2010-05-07 | 2014-04-15 | Ricoh Company, Limited | Image processing apparatus and image processing method |
| US8406538B2 (en) | 2010-05-14 | 2013-03-26 | Ricoh Company, Limited | Image processing apparatus and image processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2922575B2 (en) | 1999-07-26 |
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