JPH03101186U - - Google Patents
Info
- Publication number
- JPH03101186U JPH03101186U JP746590U JP746590U JPH03101186U JP H03101186 U JPH03101186 U JP H03101186U JP 746590 U JP746590 U JP 746590U JP 746590 U JP746590 U JP 746590U JP H03101186 U JPH03101186 U JP H03101186U
- Authority
- JP
- Japan
- Prior art keywords
- arc furnace
- controls
- short circuit
- control system
- loop control
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
Landscapes
- Rectifiers (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は本考案を説明するための各部信号波形図
、第３図は従来のアーク炉による溶解を行なう場
合のブロツク図である。
１……変圧器、２……サイリスタ整流器、３…
…リアクトル、４……電流検出器、５……アーク
炉、６……電流制御器、７……出力電流設定器、
８……移相器、９……信号比較器、１０……設定
器、１１……電圧発生器、１２……減算回路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a signal waveform diagram of various parts for explaining the present invention, and FIG. 3 is a block diagram of melting in a conventional arc furnace. 1...Transformer, 2...Thyristor rectifier, 3...
...Reactor, 4...Current detector, 5...Arc furnace, 6...Current controller, 7...Output current setting device,
8... Phase shifter, 9... Signal comparator, 10... Setting device, 11... Voltage generator, 12... Subtraction circuit.
Claims (1)
整流器に於いて、出力電流を設定された値に制御
する閉ループ制御系と、アーク炉内での短絡が発
生して、出力電流が所定の値を超えたことを検出
して、一定の電圧だけ出力電圧を減ずるように制
御する開ループ制御系を備えたことを特徴とする
サイリスタ整流器制御装置。 In the thyristor rectifier that supplies DC current to the DC arc furnace, a short circuit occurs in the closed loop control system that controls the output current to the set value, and the output current exceeds the specified value due to a short circuit inside the arc furnace. A thyristor rectifier control device characterized by comprising an open loop control system that detects this and controls the output voltage to be reduced by a certain voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP746590U JPH03101186U (en) | 1990-01-31 | 1990-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP746590U JPH03101186U (en) | 1990-01-31 | 1990-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03101186U true JPH03101186U (en) | 1991-10-22 |
Family
ID=31511122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP746590U Pending JPH03101186U (en) | 1990-01-31 | 1990-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03101186U (en) |
-
1990
- 1990-01-31 JP JP746590U patent/JPH03101186U/ja active Pending
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