CN1323093A - Bipolar great power pulse power source - Google Patents
Bipolar great power pulse power source Download PDFInfo
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- CN1323093A CN1323093A CN 01110353 CN01110353A CN1323093A CN 1323093 A CN1323093 A CN 1323093A CN 01110353 CN01110353 CN 01110353 CN 01110353 A CN01110353 A CN 01110353A CN 1323093 A CN1323093 A CN 1323093A
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- pulse
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- power source
- bipolar
- power supply
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- 238000000034 method Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 241001270131 Agaricus moelleri Species 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000004411 aluminium Substances 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052790 beryllium Inorganic materials 0.000 abstract description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011777 magnesium Substances 0.000 abstract description 3
- 229910052749 magnesium Inorganic materials 0.000 abstract description 3
- 239000011224 oxide ceramic Substances 0.000 abstract description 3
- 229910052574 oxide ceramic Inorganic materials 0.000 abstract description 3
- 229910052715 tantalum Inorganic materials 0.000 abstract description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010936 titanium Substances 0.000 abstract description 3
- 229910052719 titanium Inorganic materials 0.000 abstract description 3
- 229910052726 zirconium Inorganic materials 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 230000000087 stabilizing effect Effects 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Plasma Technology (AREA)
Abstract
The bipolar great power pulse power source is powered by balanced triphase power with multiple network filters and isolating transformer and supplies two channels, one positive and one negative, adjustable great power DC power sources. Under the control of some pulse and by power switching element for chopping transform positive and negative great power pulse with adjustable width may be obtained. The pulse power source is mainly used differential arc oxidation process to produce oxide ceramic layer on the surface of metals, especially aluminium, magnesium, titanium, zirconium, beryllium, tantalum and their alloy. The present invention may be also used in other fields needing great power pulse power source.
Description
The present invention relates to a kind of pulse power, in more detail, relate to a kind of bipolar great power pulse power source.The pulse power of the present invention is mainly used in coating metal surface generation oxide ceramic layer in differential arc oxidation method, especially be useful in the differential arc oxidation method of aluminium, magnesium, titanium, Zirconium, beryllium, tantalum and their alloy surface generation ceramic layer, also can be used for the occasion that other needs bipolar great power pulse power source.
In recent years, because the ceramic layer that generates in the metal surface with differential arc oxidation method has good physics, chemical characteristic, with differential arc oxidation aluminium, magnesium, titanium, Zirconium, beryllium, tantalum and their alloy surface are carried out the method for ceramic treatment, in industrial departments such as automobile, Aeronautics and Astronautics, machinery, electronics, obtained using widely.In the method, one of key factor that the decision ceramic layer generates quality and speed is the Electric Field Characteristics that is applied to the metal surface, and this Electric Field Characteristics is again to be determined by the performance of the pulse power and working method.In the prior art, during with the anode oxidation method process metal surfaces, used power supply mostly is straight flow greatly or direct current adds the unidirectional pulse formula, and is LVPS.In the document of relevant differential arc oxidation method, the general only simple voltage waveform that is applied to the metal surface of introducing, the power supply that does not all have detailed place of matchmakers to adopt.In PCT/GB97/00664, introduced the AC power of a kind of 700V of being at least through waveform modification.It is a kind of single phase alternating current power supply that directly obtains big pulse current from electrical network of exporting again with after capacitor and the transformer series connection.Though this power supply is simple, but there are some disadvantages, fail to be convened for lack of a quorum as the very big single phase alternating current (A.C.) Pulse Electric that produces serious distortion through waveform modification electrical network is caused serious impact, bring the trouble of severe contamination electrical network, and the electrical network three phase supply is unbalanced, can't be used for industrial production.The capacitor of different numerical value can be revised waveform though connect, and has also changed the numerical value of operating voltage simultaneously.Moreover the operating voltage amplitude can not be regulated continuously, has brought inconvenience to use.
The objective of the invention is to eliminate the weak point of the power supply that is used for differential arc oxidation in the prior art, a kind of three-phase equilibrium is provided, electrical network is not had to impact, do not disturb and pollute substantially, can be used in the industrial bipolar great power differential arc oxidation pulse power.
Another object of the present invention provides a kind of power supply of suitable differential arc oxidation work.It is that positive and negative pulse amplitude and width are continuously adjustable respectively; flat-top; bipolar great power pulse power source; by optimized choice to working pulse amplitude, width and frequency parameter; can guarantee to obtain best ceramic structure layer, good production efficiency and safety, reliably, operating characteristics easily.
The above-mentioned purpose of bipolar great power pulse power source of the present invention can realize by following measure:
Employing is through the three-phase equilibrium power supply of multiple line filter and transformer isolation, form the continuously adjustable high-power DC power supply of positive and negative two-way voltage respectively, again under the control impuls effect, the driving power switch element carries out the copped wave conversion respectively, obtains the continuously adjustable high-power positive and negative pulse of pulse duration.In the differential arc oxidation process, in order to generate the ceramic structure layer of high-quality in the metal surface, the voltage waveform of bipolar great power pulse is selected the square wave of flat-top for use, and the amplitude of pulse and width are adjustable continuously respectively.By optimized choice, under suitable oxide ceramics growth rate, can also save the energy effectively to positive and negative pulse amplitude of power supply and width.The present invention has taked special measure, allows in the three phase network each trigger in turn mutually and obtains output services pulse, makes electrical network three-phase equilibrium power supply, and electrical network is impacted and pollutes little.The main circuit power supply of power supply of the present invention adopts slowly and starts, and can make the oxidation gradually of new workpiece, helps forming high-quality ceramic structure oxide layer and can prevent capacitor and the load heavy current impact that unexpected full power power supply causes.The startup of pulse adopts gradual change to launch slowly, also adopts gradual change to launch slowly behind the pulse reset, thereby guarantees under whole operating states of power supply, electrical network is impacted little little with pollution.The described pulse power also adopts multiple protective, to guarantee the long-term safety steady operation.The described pulse power can also a tractor serves several purposes: can export the bipolar great power pulse, also can export the unipolarity highpowerpulse, can also be used as high-power DC power supply, to satisfy the demand of different user various uses.
The multiple protective measure of paired pulses power supply of the present invention comprises the following aspects: (1) utilizes the current transformer sampling of string at transformer secondary output, limits gross power; (2) utilize the current sensor sampling of string in load, come the range value of power-limiting switching tube pulse current; (3) pressure drop that utilizes power switch pipe comes power-limiting switching tube pulse current to be no more than limiting value as overcurrent sample; (4) utilize temperature switch, realize overtemperature protection copped wave transform power switching tube.
Owing to adopted multiple protective, guaranteed the fail safe of power supply long-term work.
The advantage of bipolar great power pulse power source of the present invention is when being used in the differential arc oxidation process metal surfaces, the ceramic structure layer of high-quality can be provided, electrical network is not had substantially to impact, do not disturb and do not pollute, and three-phase equilibrium can long-time safe and stable operation in industrial production.
To be embodiment as mao power source, the invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the bipolar great power pulse power source theory diagram;
Fig. 2 is a copped wave conversion schematic diagram;
Fig. 3 is for acting on pulse voltage and the pulse current waveform in the load (for example needing the metal works of plating);
Fig. 4 is the controllable silicon voltage stabilizing dc positive power block diagram of slow start-up control;
Fig. 5 is the controllable silicon voltage stabilizing dc negative supply block diagram of slow start-up control;
Fig. 6 is the theory diagram of pulse control circuit;
Fig. 1 shows the theory diagram of this bipolar great power pulse power source:
380 volts of three-phase alternating currents divide two-way through line filter, deliver to positive supply primary and negative supply primary respectively, transformer secondary output output is delivered to the three-phase controlled rectification bridge through line filter again, rectification is after inductance, capacitor filtering, sampling, trigger voltage stabilizing circuit control through the controllable silicon phase shift, obtain 0-+800 lie prostrate continuously adjustable dc positive power (+V) and 0--300 lie prostrate continuously adjustable dc negative supply (V), then, respectively under the control impuls effect of pulse control circuit output, carry out the copped wave conversion through the power switch inverter of chopping, obtain just needed, negative pulse.
Fig. 2 is a copped wave conversion schematic diagram:
Under the control impuls effect, when the positive switch closure, the dc positive power powering load, when the positive switch disconnected, positive supply finished electric, and the time of positive switch closure is the duration of positive pulse; In like manner, under the control impuls effect, during the negative power switch closure, the dc negative supply powering load, when the negative power switch disconnected, negative supply finished electric, and the time that the negative power switch closes is the duration of negative pulse.
Fig. 3 is through acting on the pulse voltage and the current waveform that flows through load (micro-arc oxidation workpiece) in the load (micro-arc oxidation workpiece) after the copped wave conversion.
Fig. 4 is the controllable silicon voltage stabilizing dc positive power block diagram of slow start-up control;
It is basic identical that it and general controllable silicon phase shift trigger voltage stabilizing circuit, do not exist together is to have increased slow start-up control partial circuit, after starting high pressure or pressing reset button, slow start-up control is partly exported a slowly linear voltage signal that rises, isolate through follower, be applied to three phase-shift control circuit inputs by clamping diode, the control thyristor operating angle is opened gradually, the DC power supply output voltage is started from scratch and is slowly risen, have only when the voltage of sampling after relatively reaching error and amplifying and be lower than slow start-up control voltage, be no longer conducting of clamping diode, when whole system entered closed loop voltage regulator state, slow start-up control part no longer worked.At this moment, power supply enters the voltage stabilizing operating state of setting.
Fig. 5 is the controllable silicon voltage stabilizing dc negative supply block diagram of slow start-up control;
It is basic identical with the controllable silicon voltage stabilizing dc positive power of slow start-up control, just after negative sampling voltage, added the one-level phase inverter, it will bear the sampling voltage paraphase becomes positive voltage, delivers to the second level again and reference voltage compares, and its error goes to carry out the voltage stabilizing adjustment after amplifying.
Fig. 6 produces theory diagram for control impuls:
In order to allow each triggering acquisition output services pulse in turn mutually of three phase network, make electrical network energy balanced feeding, and in order to reduce the impact to electrical network, ideal method is to allow the frequency of output services pulse and electrical network that certain synchronized relation is arranged.The present invention delivers to A, B, C three-phase ac signal three zero cross detection circuits (A phase zero passage detection, B phase zero passage detection, C phase zero passage detection) respectively with three small transformers, obtain the zero-crossing pulse of three group of 100 cycle per second, again they are delivered to the adder circuit addition, thus obtain 300 cycle per seconds with mains frequency the lock-out pulse of certain relation is arranged.Choosing appropriate frequency dividing ratio (be the 2n frequency division, n is a positive integer) just can allow three phase network respectively trigger the pulse of acquisition output services mutually in turn.The T trigger is delivered in pulse behind frequency division, two outputs (Q, Q) at the T trigger obtain complementary level, so just can divide two-way to produce and the corresponding triggering control impuls of the positive and negative pulse of output, the purpose of inserting delay circuit in two-way is can be in after power supply controllable silicon blocking interval or the filter capacitor boost charge for the moment that allows trigger impulse produce, reaching the effect of energy storage type power pulser, thereby avoid electrical network is produced big impact.Add slow broadening start-up control in positive and negative pulse width regulating circuit respectively, it can avoid starting and the work of the restarting big pulse current impact just that resets.
The bipolar great power differential arc oxidation pulse power of the present invention is provided with multiple protective and warning, can guarantee reliablely and stablely to move for a long time.
Its performance index are: 1. VD:
Positive supply is 0 to+800 volt (adjustable continuously);
Negative supply is 0 to-300 volt (adjustable continuously); 2. average anode current:
Positive supply is 150 peaces to the maximum;
Negative supply is 150 peaces to the maximum; 3. voltage pulse output amplitude:
0 to+800 volt of positive pulse voltage amplitude (adjustable continuously);
0 to-300 volt of negative pulse voltage amplitude (adjustable continuously); 4. output maximum surge current: 1000 peaces: 5. pulse duration: 0 millisecond to 3 milliseconds (adjustable continuously); 6. pulse frequency: 150,75,37.5,18.75 cycle per seconds;
Should point out emphatically, below only by the description of schematic diagram to being described property of this pulse power, concerning one of skill in the art, will expect various corrections in spiritual scope of the present invention and additional, only otherwise depart from the given feature of purpose of the present invention, all variations in the scope that the equivalence of the claim of invention forms all should be included in the present invention.Protection scope of the present invention is determined by following claim.
Claims (8)
1. bipolar great power pulse power source, it is characterized in that adopting the three-phase equilibrium power supply of multiple line filter and transformer isolation, form the continuously adjustable high-power DC power supply of positive and negative two-way voltage respectively, again under the control impuls effect, utilize power switch component to carry out the copped wave conversion respectively, obtain the continuously adjustable high-power positive and negative pulse of pulse duration.
2. bipolar great power pulse power source according to claim 1 is characterized in that being applied to bipolar great power pulse in the load corresponding to being obtained by each power supply that is triggered in turn mutually in the three phase network, and it can guarantee that electrical network can balanced feeding.
3. bipolar great power pulse power source according to claim 1 and 2, the measure that it is characterized in that obtaining the grid balance power supply is respectively three-phase ac signal to be delivered to three zero cross detection circuits with three small transformers, obtain the zero-crossing pulse of three group of 100 cycle per second, again they are delivered to the adder circuit addition, obtain 300 cycle per seconds with the mains frequency lock-out pulse, choose suitable frequency dividing ratio (2
n-n is a positive integer), enable to obtain the output services pulse corresponding to triggering three phase network in turn.
4. bipolar great power pulse power source according to claim 1 is characterized in that the waveform of the bipolar great power pulse of its output is the square wave of flat-top, helps generating good ceramic layer in the metal surface with differential arc oxidation method.
5. bipolar great power pulse power source according to claim 1 is characterized in that main circuit power supply adopts startup slowly.
6. bipolar great power pulse power source according to claim 1, the startup that it is characterized in that pulse adopt gradual change launch slowly with pulse reset after also adopt gradual change to launch slowly working method, little to the impact of electrical network.
7. bipolar great power pulse power source according to claim 1 is characterized in that adopting multiple protective in circuit, can guarantee safe and stable operation over a long time.
8. bipolar great power pulse power source according to claim 1, but it is characterized in that described power supply a tractor serves several purposes,, can export the bipolar great power pulse, also can export the unipolarity highpowerpulse, can also be used as high-power DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011103531A CN1140044C (en) | 2001-04-06 | 2001-04-06 | Bipolar great power pulse power source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011103531A CN1140044C (en) | 2001-04-06 | 2001-04-06 | Bipolar great power pulse power source |
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| CN1323093A true CN1323093A (en) | 2001-11-21 |
| CN1140044C CN1140044C (en) | 2004-02-25 |
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| CNB011103531A Expired - Fee Related CN1140044C (en) | 2001-04-06 | 2001-04-06 | Bipolar great power pulse power source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310411C (en) * | 2003-09-04 | 2007-04-11 | 哈尔滨工业大学 | High-frequency high-power multi-waveform power supply for differential arc oxidization |
| CN103526256A (en) * | 2013-10-29 | 2014-01-22 | 南京南车浦镇城轨车辆有限责任公司 | Micro-arc oxidation corrosion-resistant protection method for high-speed train aluminum alloy welded joint |
| CN107419315A (en) * | 2017-05-12 | 2017-12-01 | 深圳市粤辉煌环保技术有限公司 | A kind of preparation method of magnesium alloy black micro-arc oxidation films |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454742C (en) * | 2004-09-21 | 2009-01-21 | 沈阳黎明航空发动机(集团)有限责任公司 | Large capacity titanium alloy pulse micro arc anode oxidation dynamic control power source |
-
2001
- 2001-04-06 CN CNB011103531A patent/CN1140044C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310411C (en) * | 2003-09-04 | 2007-04-11 | 哈尔滨工业大学 | High-frequency high-power multi-waveform power supply for differential arc oxidization |
| CN103526256A (en) * | 2013-10-29 | 2014-01-22 | 南京南车浦镇城轨车辆有限责任公司 | Micro-arc oxidation corrosion-resistant protection method for high-speed train aluminum alloy welded joint |
| CN103526256B (en) * | 2013-10-29 | 2016-03-09 | 南京南车浦镇城轨车辆有限责任公司 | A kind of differential arc oxidation corrosion resistant means of defence of bullet train welded joints in aluminium alloy |
| CN107419315A (en) * | 2017-05-12 | 2017-12-01 | 深圳市粤辉煌环保技术有限公司 | A kind of preparation method of magnesium alloy black micro-arc oxidation films |
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| Publication number | Publication date |
|---|---|
| CN1140044C (en) | 2004-02-25 |
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Effective date of registration: 20040218 Address after: 100875 Institute of low energy nuclear physics, Beijing Normal University No. 12 South College Road, Lai Yongchun Patentee after: Beijing Normal University Address before: 100875 Institute of low energy nuclear physics, Beijing Normal University Patentee before: Lai Yongchun |
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