CN1925299A - Method for realizing high-quality current stabilization feedback signal of rectifier unit - Google Patents
Method for realizing high-quality current stabilization feedback signal of rectifier unit Download PDFInfo
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- CN1925299A CN1925299A CN 200610021040 CN200610021040A CN1925299A CN 1925299 A CN1925299 A CN 1925299A CN 200610021040 CN200610021040 CN 200610021040 CN 200610021040 A CN200610021040 A CN 200610021040A CN 1925299 A CN1925299 A CN 1925299A
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- 230000006641 stabilisation Effects 0.000 title claims abstract description 56
- 238000011105 stabilization Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002955 isolation Methods 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
This invention relates to A/D stabilizer circuit and especially to one alumina electrolyte rectification supply system set feedback signal method of high quality. This invention comprises alternating current induction, rectification transducer, self-saturation resistance and rectification device, wherein, the said induction and resistance are set with feedback device and stabilization control and adjust device.
Description
Technical field
The present invention relates to a kind of alternating current-direct current current stabilization circuit, particularly relate to a kind of implementation method that is used for the high-quality current stabilization feedback signal of rectifier unit of aluminium electrolysis commutator electric power system.
Background technology
Existing steady flow system feedback is to utilize unit 20KA direct current centreless instrument transformer, through the secondary measuring transducer, finish the conversion of direct current 20KA to 0-10V signal, conversion back signal is as the current stabilization feedback of steady flow system, the current stabilization feedback is set common passing through " current stabilization control, adjusting device " with current stabilization and is realized autotransducer control is reached the purpose of current stabilization.There is following shortcoming in this current stabilization feedback signal circuit: the one, direct current centreless mutual inductance secondary singal by adder and the computing of one-accumulate device after, its signal circuit capacitive increases, response dynamics response quality descends, response time can not be satisfied the high accuracy number current stabilization needs of response fast about 100-250mS; The 2nd, current stabilization feedback signal path link is many, and the signal after the conversion can not truly reflect the details that changes with actual current, directly influences the current stabilization control precision.
Goal of the invention and content
The problem to be solved in the present invention is at the deficiencies in the prior art, and a kind of steady flow system feedback signal dynamic responding speed that improves is provided, and improves the implementation method of the high-quality current stabilization feedback signal of rectifier unit of integrated signal quality and quality.
The implementation method of high-quality current stabilization feedback signal of rectifier unit of the present invention is achieved by following technical proposals: the implementation method of high-quality current stabilization feedback signal of rectifier unit of the present invention comprises that AC current transformer, rectifier transformer, autotransducer, rectifier constitute, described AC current transformer output is connected with the rectifier transformer input, the rectifier transformer output is connected with the autotransducer input, the autotransducer output is connected with the rectifier input, the rectifier output dc voltage; And between described AC current transformer and autotransducer, be provided with the control of current stabilization feedback device and current stabilization, adjusting device.
The implementation method of high-quality current stabilization feedback signal of rectifier unit of the present invention compared with prior art has following beneficial effect: because current stabilization feedback signal of the present invention is changed to the AC current transformer output from original rectifier output end, reduce signal circuit and held increasing property, particularly in the current stabilization feedback loop, increased the current stabilization feedback circuit, improve the dynamic responding speed of steady system feedback signal, improved integrated signal quality and response quality.The present invention can be widely used in the digital management system of electrolytic aluminium and chemical enterprise commutation supply voltage system implementation high-accuracy steady-flow.
Description of drawings
The implementation method of high-quality current stabilization feedback signal of rectifier unit of the present invention has following accompanying drawing:
Fig. 1 is the unit steady flow system structural representation of prior art;
Fig. 2 is the implementation method system configuration schematic diagram of high-quality current stabilization feedback signal of rectifier unit of the present invention;
Fig. 3 is the implementation method current stabilization feedback circuit structure schematic diagram of high-quality current stabilization feedback signal of rectifier unit of the present invention.
Wherein: 1, be AC current transformer; 2, be rectifier transformer; 3, be autotransducer; 4, be rectifier; 5, be the current stabilization feedback device; 6, be current stabilization control, adjusting device; 7, be the 1A1A isolation transformer; 8, be bridge rectifier; 9, be voltage transform resistance R1; 10, be π type filter circuit.
Embodiment
Below in conjunction with drawings and Examples technical solution of the present invention is further described.
The implementation method of high-quality current stabilization feedback signal of rectifier unit of the present invention comprises that AC current transformer 1, rectifier transformer 2, autotransducer 3, rectifier 4 constitute, described AC current transformer 1 output is connected with rectifier transformer 2 inputs, rectifier transformer 2 outputs are connected with autotransducer 3 inputs, autotransducer 3 outputs are connected with rectifier 4 inputs, rectifier 4 output dc voltages.
Be connected with the control of current stabilization feedback device 5 and current stabilization, adjusting device 6 between described AC current transformer 1 and the autotransducer 3; Described current stabilization feedback device 5 inputs are connected with AC current transformer 1, and current stabilization feedback device 5 outputs are connected with current stabilization control, adjusting device 6 inputs, and current stabilization control, adjusting device 6 outputs are connected with autotransducer 3.
Described current stabilization feedback device 5 comprises that isolation transformer 7, bridge rectifier 8, voltage transform resistance R19, π type filter circuit 10 constitute; Describedly be connected with isolation transformer 7TA1, TA2, the TA3 of three 1A/1A from rectifying transformer alternating instrument transformer 1 three-phase alternating current once, isolation transformer 7 secondaries are connected with three-phase bridge rectifier circuit 8, bridge rectifier 8 outputs and voltage transform resistance R19 are connected in parallel, after voltage transform resistance 9R1 output and π type filter circuit 10 are connected in parallel, the output high-quality current stabilization feedback signal.
Described isolation transformer 7 secondaries are exported three-phase ac signal according to Y-connection.
Described isolation transformer 7 is 15VA; Rectifier diode is IN54008; Filter capacitor C1 is 0.1 μ F/50V, and C2 is that 0.1 μ F/50V is nonpolarity; Resistance R 1 is 3.2 Ω/10W, and resistance R 2 is 2K/1W.
The current stabilization control, the adjusting device that are connected in the prior art between rectifier secondary and the autotransducer are changed into and being connected between AC current transformer and the autotransducer, and between current stabilization control, adjusting device and AC current transformer the current stabilization feedback device be set; Current stabilization feedback is taken from rectifier transformer current transformer once, current transformer be changed to 250A/1A.From the three-phase alternating current of rectifying transformer alternating Current Transformer Secondary,, isolate the high voltage and the system earth of the instrument transformer of previous stage through isolation transformer TA1, TA2, the TA3 of three 1A/1A.
Isolation transformer 7 secondaries of three 1A/1A connect according to star fashion, the output three-phase ac signal, carry out three phase rectifier through three-phase bridge rectifier V1, V2, V3, V4, V5, V6, survey at the direct current of rectifier bridge voltage transform resistance R1 is installed, realize the conversion of electric current to voltage.
Characteristics such as π type filter circuit 10 Filtering Processing of feedback direct voltage through being made of C1, C2, R2 can obtain high-quality current stabilization feedback signal, and it is fast that this signal has feedback response speed, best in quality.
The constant-current stabilizer component parameters:
Isolation transformer: 15VA;
Rectifier diode: IN54008;
Capacitor: C1:0.1 μ F/50V, C2:0.1 μ F/50V is nonpolarity;
Resistance: R1:3.2 Ω/10W, resistance: R2:2K/1W.
Claims (5)
1, a kind of implementation method of high-quality current stabilization feedback signal of rectifier unit, comprise that AC current transformer (1), rectifier transformer (2), autotransducer (3), rectifier (4) constitute, it is characterized in that: described AC current transformer (1) output is connected with rectifier transformer (2) input, rectifier transformer (2) output is connected with autotransducer (3) input, autotransducer (3) output is connected with rectifier (4) input, rectifier (4) output dc voltage.
2, the implementation method of high-quality current stabilization feedback signal of rectifier unit as claimed in claim 1 is characterized in that: be connected with the control of current stabilization feedback device (5) and current stabilization, adjusting device (6) between described AC current transformer (1) and the autotransducer (3); Described current stabilization feedback device (5) input is connected with AC current transformer (1), current stabilization feedback device (5) output is connected with current stabilization control, adjusting device (6) input, and current stabilization control, adjusting device (6) output are connected with autotransducer (3).
3, the implementation method of high-quality current stabilization feedback signal of rectifier unit as claimed in claim 2 is characterized in that: described current stabilization feedback device (5) comprises that isolation transformer (7), bridge rectifier (8), voltage transform resistance R1 (9), π type filter circuit (10) constitute; Describedly be connected with isolation transformer (7) TA1, TA2, the TA3 of three 1A/1A from rectifying transformer alternating instrument transformer (1) three-phase alternating current once, isolation transformer (7) secondary is connected with three-phase bridge rectifier circuit (8), bridge rectifier (8) output and voltage transform resistance R1 (9) are connected in parallel, after voltage transform resistance R1 (9) output and π type filter circuit (10) are connected in parallel, the output high-quality current stabilization feedback signal.
4, the implementation method of high-quality current stabilization feedback signal of rectifier unit as claimed in claim 3 is characterized in that: described isolation transformer (7) secondary is exported three-phase ac signal according to Y-connection.
5, the implementation method of high-quality current stabilization feedback signal of rectifier unit as claimed in claim 3 is characterized in that: described isolation transformer (7) is 15VA; Rectifier diode is IN54008; Filter capacitor C1 is 0.1 μ F/50V, and C2 is that 0.1 μ F/50V is nonpolarity; Resistance R 1 is 3.2 Ω/10W, and resistance R 2 is 2K/1W.
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CNB200610021040XA CN100474754C (en) | 2006-05-24 | 2006-05-24 | Method for realizing high-quality current stabilization feedback signal of rectifier unit |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102677097A (en) * | 2012-05-30 | 2012-09-19 | 国电南瑞科技股份有限公司 | Flow-stabilizing fault tolerance control method of aluminum electrolyzation power supply |
CN102851703A (en) * | 2012-10-09 | 2013-01-02 | 国电南瑞科技股份有限公司 | Intelligent automatic voltage regulation optimized control method for electrolytic aluminum power supply system |
CN102936737A (en) * | 2012-11-08 | 2013-02-20 | 国电南瑞科技股份有限公司 | Method for analyzing control characteristics of self-saturation reactor in electrolytic aluminum rectification system |
CN111478604A (en) * | 2020-04-07 | 2020-07-31 | 贵州航天林泉电机有限公司 | Power conversion circuit based on three-phase self-saturation reactor |
CN108256196B (en) * | 2018-01-10 | 2021-08-10 | 重庆大学 | Improved pi model obtaining method of single-phase double-winding transformer considering deep saturation characteristic of iron core |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4403707A1 (en) * | 1994-02-07 | 1995-08-10 | Leica Mikroskopie & Syst | Regulated power supply unit with an electronic transformer |
CN1095324A (en) * | 1994-02-26 | 1994-11-23 | 白龙珠 | The pulse direct current arc-welding machine |
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2006
- 2006-05-24 CN CNB200610021040XA patent/CN100474754C/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102677097A (en) * | 2012-05-30 | 2012-09-19 | 国电南瑞科技股份有限公司 | Flow-stabilizing fault tolerance control method of aluminum electrolyzation power supply |
CN102677097B (en) * | 2012-05-30 | 2014-09-03 | 国电南瑞科技股份有限公司 | Flow-stabilizing fault tolerance control method of aluminum electrolyzation power supply |
CN102851703A (en) * | 2012-10-09 | 2013-01-02 | 国电南瑞科技股份有限公司 | Intelligent automatic voltage regulation optimized control method for electrolytic aluminum power supply system |
CN102936737A (en) * | 2012-11-08 | 2013-02-20 | 国电南瑞科技股份有限公司 | Method for analyzing control characteristics of self-saturation reactor in electrolytic aluminum rectification system |
CN102936737B (en) * | 2012-11-08 | 2014-12-10 | 国电南瑞科技股份有限公司 | Method for analyzing control characteristics of self-saturation reactor in electrolytic aluminum rectification system |
CN108256196B (en) * | 2018-01-10 | 2021-08-10 | 重庆大学 | Improved pi model obtaining method of single-phase double-winding transformer considering deep saturation characteristic of iron core |
CN111478604A (en) * | 2020-04-07 | 2020-07-31 | 贵州航天林泉电机有限公司 | Power conversion circuit based on three-phase self-saturation reactor |
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