CN104270030A - Pulse power source capable of realizing short-circuit output - Google Patents
Pulse power source capable of realizing short-circuit output Download PDFInfo
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- CN104270030A CN104270030A CN201410532035.XA CN201410532035A CN104270030A CN 104270030 A CN104270030 A CN 104270030A CN 201410532035 A CN201410532035 A CN 201410532035A CN 104270030 A CN104270030 A CN 104270030A
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Abstract
The invention discloses a pulse power source capable of realizing short-circuit output. The pulse power source comprises a primary voltage regulating level, a secondary shaping output level, a controller, a human-computer interface and sensors. The sensors comprise the voltage sensor and the current sensor. The primary voltage regulating level is connected with the controller and further connected with the secondary shaping output level through the voltage sensor, the secondary shaping output level is connected with the controller through a current limiting reactor, the voltage sensor and the current sensor, and the controller is further connected with the human-computer interface. The pulse power source can still work safely during an output short circuit and guarantee that electric filed parameters meet technology requirements, interrupt will not be caused, energy resources are saved, efficiency is high, the power source will not be damaged, load equipment will not be damaged either, output energy can be controlled in a normal range, and accidents such as fire disasters and explosions will not be caused.
Description
Technical field
The present invention relates to power electronics, DC power supply, inverter field, specifically a kind of a kind of pulse power being applied to the applications such as water treatment, metallide, electric precipitation, electric dehydration, laser.
Background technology
In fields such as water treatment, metallide, electric precipitation, electro-desalting, electric dehydrations, often there is the situation of power supply output short-circuit.Very large short circuit current can be produced during short circuit, likely damage power supply, also likely damage power consumption equipment, even likely cause the serious accident such as fire, blast.
The method solving in the industry short circuit problem is at present generally that after short circuit being detected, power supply stops rapidly exporting, and again export after short-circuit condition disappears, this can cause the interruption of production process, have impact on production efficiency.
Reduce output voltage when another kind method is short circuit, power work is in low pressure, High-current output state, but in some application scenario, the electric field strength that brownout produces is also too low, cannot reach manufacturing technique requirent, cause waste of energy.
Summary of the invention
The object of the present invention is to provide a kind of output voltage, electric current, frequency, pulsewidth all adjustable and can short circuit export the pulse power, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of can short circuit export the pulse power, comprise first order pressure regulation level, second level shaping output stage, controller, man-machine interface and transducer, transducer comprises voltage sensor and current sensor, first order pressure regulation level connects controller, first order pressure regulation level is also by voltage sensor connection control device, first order pressure regulation level connects second level shaping output stage by voltage sensor, shaping output stage in the second level is respectively by current limiting reactor, voltage sensor and current sensor connection control device, and controller is also connected with man-machine interface; Alternating current or direct current input first order pressure regulation level, through pressure regulation, the voltage stabilizing of first order pressure regulation level, obtain galvanic current pressure; The stable DC voltage that second level shaping output stage utilizes first order pressure regulation level to produce, user by man-machine interface regulation output electric current, frequency, pulsewidth, produces the electric field being applicable to production technology needs according to loading condition.
As the further scheme of the present invention: the alternating current of input is single-phase or three-phase.
As the further scheme of the present invention: electric current rate of climb during current limiting reactor restriction short circuit; After output current exceedes set point, shaping output stage in the second level controls output pulse width, and first order pressure regulation level controls output voltage, and the common voltagesecond product keeping exporting is constant, makes output current maintain set point constant; After short-circuit condition disappears, the output arranged before automatically recovering.
As the further scheme of the present invention: the switch element of first order pressure regulation level, second level shaping output stage is IGBT, field effect transistor or pliotron, first order pressure regulation level adopts transformer, for pressure regulation, isolation; If do not need isolation, first order pressure regulation level does not adopt transformer.
As the further scheme of the present invention: controller realizes all controlling functions, controller adopts single-chip microcomputer or digital processing unit, and communicates with host computer, realizes Long-distance Control or local control.
Compared with prior art, the invention has the beneficial effects as follows: the pressure regulation of first order pressure regulation level, voltage stabilizing in the present invention, obtain a galvanic current pressure, do not affect, working stability, easily control by output situation.The stable DC voltage that second level shaping output stage utilizes first order pressure regulation level to produce, according to loading condition regulation output electric current, frequency, pulsewidth, can produce the electric field of applicable production technology needs.When output is short-circuited, shaping output stage in the second level controls output pulse width according to the size of output current, keep the voltagesecond product of output constant, the energy that then can control to export remains unchanged, according to the voltage of manufacturing technique requirent regulation output, electric current, frequency, pulsewidth, can when output short-circuit still trouble free service, and ensure that electric pulse field parameter meets technological requirement, can not cause to produce and interrupt, and energy savings, efficiency is high, both power supply can not be damaged, also load equipment can not be damaged, for exporting energy-controllable in normal range (NR), also fire can not be caused, the accidents such as blast.
Accompanying drawing explanation
Fig. 1 be can short circuit export pulse power structured flowchart;
Fig. 2 is the circuit diagram of the embodiment of the present invention;
In figure: 1-first order pressure regulation level; 2-second level shaping output stage; 3-switch element; 4-rectifier diode; 5-circuit breaker; 6-resonant capacitance; 7-transformer; 8-rectifying and wave-filtering inductance; 9-output current limiting inductance; 10-current sensor; 11-controller; 12-man-machine interface; 13-voltage of voltage regulation transducer; 14-output voltage sensor; 15-industrial frequency rectifying filter capacitor; 16-filtering high-frequency rectifier electric capacity; 17-fast recovery diode; 18-delay startup module.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
Refer to Fig. 1 and Fig. 2, in the embodiment of the present invention, a kind of can short circuit export the pulse power, input power is three-phase 380V alternating current, 50Hz; The operating frequency of first order pressure regulation level 1 is 20kHz, adopts the high frequency transformer of non-crystaline amorphous metal; Switch element 3 is IGBT, as the switch element of first order pressure regulation level, second level shaping output stage; Miscellaneous part has input rectifying diode 4, controller 11, voltage of voltage regulation transducer 13, output voltage sensor 14, current sensor 10, circuit breaker 5, man-machine interface 12 etc.Three-phase 380V alternating current is by circuit breaker 5 input rectifying diode 4, rectifier diode 4 and delay startup module 18, industrial frequency rectifying filter capacitor 15 connects, the two ends of industrial frequency rectifying filter capacitor 15 are also connected with output voltage sensor 14, output voltage sensor 14 is connection control device 11 also, delay startup module 18 connecting valve element 3, switch element 3 connection control device 11, also be connected with resonant capacitance 6, resonant capacitance 6 is also connected with transformer 7, transformer 7 is also connected with fast recovery diode 17, fast recovery diode 17 also with rectifying and wave-filtering inductance 8, filtering high-frequency rectifier electric capacity 16 connects, the two ends of filtering high-frequency rectifier electric capacity 16 are connected with voltage of voltage regulation transducer 13, voltage of voltage regulation transducer 13 connection control device 11, the two ends of filtering high-frequency rectifier electric capacity 16 are also connected with second level shaping output stage 2, second level shaping output stage 2 connects current sensor 10 by output current limiting inductance 9, current sensor 10 connection control device 11, the all right directly output current of second level shaping output stage 2, frequency, pulsewidth, controller 11 connects man-machine interface 12.
The course of work of the present invention is as follows:
(1) close circuit breaker 5, three phase mains becomes direct current after rectifier diode 4, charges to industrial frequency rectifying filter capacitor 15 by delay startup module 18.Delay startup module 18 limits charging current, prevents overcurrent.
(2) voltage of voltage regulation transducer 14 detects that the voltage at electric capacity 15 two ends is more than after 400V, delay startup module 18 no longer current limliting, and controller 11 controls power supply to start to export.
(3) user operation man-machine interface 12, can arrange the parameters such as output voltage, output current, output frequency, output waveform, output pulse width, output polarity, man-machine interface 12 also can the state such as display alarm information, device temperature.
(4) when output short circuit, the output current limiting inductance 9 Limited Current rate of climb, after output current exceedes set point, second level shaping output stage 2 controls output pulse width, first order pressure regulation level 1 controls output voltage, the voltagesecond product that common maintenance exports is constant, output current is made to maintain set point constant, the energy that namely can control to export remains unchanged, both power supply can not be damaged, also can not damaging load equipment, for exporting energy-controllable in normal range (NR), also can not cause the accident such as fire, blast.
(5) after short-circuit condition disappears, power supply recovers voltage, the electric current output of original setting automatically.
The invention has the advantages that:
1, alternating current input can be single-phase, also can be three-phase, also can direct input dc power.
2, first order pressure regulation level pressure regulation, voltage stabilizing, obtain a galvanic current pressure, do not affect, working stability, easily control by output situation.
3, shaping output stage in the second level utilizes the stable DC voltage that first order pressure regulation level produces, and according to loading condition regulation output electric current, frequency, pulsewidth, can produce the electric field of applicable production technology needs.
4, when output is short-circuited, shaping output stage in the second level controls output pulse width according to the size of output current, keep the voltagesecond product of output constant, the energy that then can control to export remains unchanged, both power supply can not be damaged, also can not damaging load equipment, for exporting energy-controllable in normal range (NR), also can not cause the accident such as fire, blast.
5, all control realizes by controller, and function is strong, and is convenient to amendment.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (5)
1. one kind can short circuit export the pulse power, it is characterized in that, comprise first order pressure regulation level, second level shaping output stage, controller, man-machine interface and transducer, transducer comprises voltage sensor and current sensor, first order pressure regulation level connects controller, first order pressure regulation level is also by voltage sensor connection control device, first order pressure regulation level connects second level shaping output stage by voltage sensor, shaping output stage in the second level is respectively by current limiting reactor, voltage sensor and current sensor connection control device, and controller is also connected with man-machine interface; Alternating current or direct current input first order pressure regulation level, through pressure regulation, the voltage stabilizing of first order pressure regulation level, obtain galvanic current pressure; The stable DC voltage that second level shaping output stage utilizes first order pressure regulation level to produce, user by man-machine interface regulation output electric current, frequency, pulsewidth, produces the electric field being applicable to production technology needs according to loading condition.
2. according to claim 1 can short circuit export the pulse power, it is characterized in that, the alternating current of input is single-phase or three-phase.
3. according to claim 1 can the pulse power that exports of short circuit, it is characterized in that, electric current rate of climb during described current limiting reactor restriction short circuit; After output current exceedes set point, shaping output stage in the second level controls output pulse width, and first order pressure regulation level controls output voltage, and the common voltagesecond product keeping exporting is constant, makes output current maintain set point constant; After short-circuit condition disappears, the output arranged before automatically recovering.
4. according to claim 1 can short circuit export the pulse power, it is characterized in that, the switch element of first order pressure regulation level, second level shaping output stage is IGBT, field effect transistor or pliotron, and first order pressure regulation level adopts transformer, for pressure regulation, isolation; If do not need isolation, first order pressure regulation level does not adopt transformer.
5. according to claim 1 can the pulse power that exports of short circuit, it is characterized in that, described controller realizes all controlling functions, and controller adopts single-chip microcomputer or digital processing unit, and communicates with host computer, realizes Long-distance Control or locally to control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532035.XA CN104270030B (en) | 2014-10-11 | 2014-10-11 | A kind of pulse power that can be exported with short circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410532035.XA CN104270030B (en) | 2014-10-11 | 2014-10-11 | A kind of pulse power that can be exported with short circuit |
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| CN104270030A true CN104270030A (en) | 2015-01-07 |
| CN104270030B CN104270030B (en) | 2017-07-07 |
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| CN201410532035.XA Expired - Fee Related CN104270030B (en) | 2014-10-11 | 2014-10-11 | A kind of pulse power that can be exported with short circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105154940A (en) * | 2015-08-10 | 2015-12-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | Intelligent brush electroplating power source |
| CN107911005A (en) * | 2017-11-28 | 2018-04-13 | 合肥华耀电子工业有限公司 | A kind of Switching Power Supply suitable for pulse load matching small capacitances |
| CN110601568A (en) * | 2019-08-08 | 2019-12-20 | 云南昆钢电子信息科技有限公司 | High-power cold cathode electron gun direct-current high-voltage power supply and method for providing voltage stabilization |
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| CN107911005A (en) * | 2017-11-28 | 2018-04-13 | 合肥华耀电子工业有限公司 | A kind of Switching Power Supply suitable for pulse load matching small capacitances |
| CN110601568A (en) * | 2019-08-08 | 2019-12-20 | 云南昆钢电子信息科技有限公司 | High-power cold cathode electron gun direct-current high-voltage power supply and method for providing voltage stabilization |
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| CN104270030B (en) | 2017-07-07 |
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Granted publication date: 20170707 Termination date: 20201011 |