CN1245796C - High-power high-voltage D. C. electrostatic electric power unit - Google Patents
High-power high-voltage D. C. electrostatic electric power unit Download PDFInfo
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- CN1245796C CN1245796C CN 02121413 CN02121413A CN1245796C CN 1245796 C CN1245796 C CN 1245796C CN 02121413 CN02121413 CN 02121413 CN 02121413 A CN02121413 A CN 02121413A CN 1245796 C CN1245796 C CN 1245796C
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- 230000003068 static effect Effects 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 239000003381 stabilizer Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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Abstract
The present invention relates to a power supply device, particularly to a high-power high-voltage direct current static power supply device of an X-light static power supply, which can be used for dust removal and spraying. The present invention aims to provide the high-power high-voltage direct current static power supply device having the advantages of small volume, high frequency, high power, high efficiency and high reliability. Besides, the present invention can be intelligently controlled. The device organically combines the functions of an inversion driver, an inverter and a boosting transformer and realizes a stable high-voltage direct current power supply which is automatically controlled by a microprocessor. Thus, the power supply can always keep an optimum working point. When the power supply is used for a dust removal device, the present invention can obtain high dust removal efficiency.
Description
Technical field
The present invention relates to a kind of supply unit, particularly a kind of high-power high voltage dc static supply unit that can be used as dedusting, spraying, X-ray static power supply.
Background technology
Existing high-voltage electrostatic power device, core technology adopts transistor oscillating circuit, voltage doubling rectifing circuit more, to obtain dc high-voltage.Wherein, the direct current that the transistor oscillating circuit will be gone up circuit supply is converted to high-frequency alternating current, boosts through capacitance voltage multiplier circuit, exports dc high-voltage after the rectification.The defective of this technology is that the high-frequency alternating current frequency that is produced by the transistor oscillating circuit is low; Therefore though capacitance voltage multiplier circuit boosts easily, output current is little, and power is low, and not only volume is big to adopt the power supply of this technology, and efficient is low, and the power consumption height does not meet modern society's requirements of saving energy.
In the prior art, also have and adopt inverter that direct current is converted to high-frequency alternating current.Inverter adopts high frequency small power switch transistor usually, by improving ac frequency, improves boosting efficiency; Or adopt high-power switch tube (as controllable silicon), improve the power output of alternating current, and then improve boosting efficiency.Two kinds of schemes all have its defective place: first kind of scheme frequency height, but power is little, so efficient is not high; Second kind of scheme power is big, but frequency can only reach intermediate frequency, about 10KHZ, so efficient is also lower.This shows that above-mentioned technology can not really improve transformation efficiency effectively.
Summary of the invention
Main purpose of the present invention is to overcome above-mentioned drawback, provides a kind of volume little, the frequency height, and power is big, the high-power high voltage dc static supply unit that efficient is high.
Another purpose of the present invention is to provide a kind of reliability height, but the high-power high voltage dc static supply unit of Based Intelligent Control.
For achieving the above object, the present invention makes up the function that realizes direct current is converted to high-frequency alternating current by inversion driver, inverter, makes the high-frequency alternating current frequency height of inverter output, and power is big.The present invention takes following technical measures:
One, adopts the step-up transformer that particular design is arranged on the structure, high-frequency ac voltage was both effectively raise, can obtain bigger power again, thereby guarantee delivery efficiency of the present invention.
Two, the design of adopting microprocessor to combine with each protective circuit.Microprocessor receives the sampled signal of each protective circuit, by software signal value is judged, exports corresponding signal according to the result who judges, the operation of control section circuit is to reach intelligentized requirement.
Design of the present invention is as follows:
A kind of high-power high voltage dc static supply unit, comprise power circuit and the voltage regulating rectification circuit that links to each other successively, inverter, step-up transformer and rectifying output circuit, inverter is connected to the inversion driver, wherein, power circuit provides power supply by isolating transformer to whole circuit, voltage regulating rectification circuit receives the alternating current that power circuit transmits, the output galvanic current is to inverter, and the inversion driver produces two square waves that drive, and inverter is driven; The direct current that inverter is sent voltage regulating rectification circuit here is transformed into high-frequency alternating current, boosts for step-up transformer, and the high-frequency ac electric boost that step-up transformer is exported inverter, and through rectifying output circuit, the output high voltage direct current; Also comprise first current foldback circuit, microprocessor and over-voltage over-current protection circuit and second current foldback circuit, wherein:
First current foldback circuit is gathered the current signal of inverter and is delivered to the inversion driver, and the inversion driver detects this electric current, if electric current greater than preset value, then the inversion driver stops output pulse signal;
Over-voltage over-current protection circuit is gathered voltage, the current signal of voltage regulating rectification circuit and is delivered to microprocessor, and whether this voltage of microprocessor judges, electric current are higher than preset value, if be higher than, then exports control signal, the output of the circuit of cutting off the electricity supply;
Step-up transformer is by second current foldback circuit, and output current signal is to microprocessor, and whether this electric current of microprocessor judges is higher than preset value, if be higher than, then exports control signal, the output of the circuit of cutting off the electricity supply;
Microprocessor detects the pulse signal of inversion driver output, if the output of inversion driver no signal, microprocessor output control signal, the output of the circuit of cutting off the electricity supply;
Microprocessor is to judgements of sampling of the high-voltage dc voltage of rectifying output circuit output, if this magnitude of voltage is in preset range, microprocessor is exported control signal and delivered to voltage regulating rectification circuit.
High-power high voltage dc static supply unit of the present invention, wherein, a pulse generator provides pulse signal for the inversion driver; Pulse signal enters driver through the input of inversion driver, by Schmidt trigger this signal is carried out shaping, pulse after the shaping is through one and enter the isolating transformer primary side behind the door, and its secondary side obtains the drive signal with the input pulse homophase, is exported by the inversion output end of driver.
High-power high voltage dc static supply unit of the present invention, wherein, described inverter adopts high power transistor IGBT; Inverter is by forming with first to fourth input resistance, first and second input protection resistors, first to fourth voltage-stabiliser tube, the first and second high power transistor IGBT, the first and second half-bridge electric capacity, first and second fly-wheel diodes that the inversion driver output end links to each other respectively; The first and second high power transistor IGBT and the first and second half-bridge electric capacity are formed inverter bridge; the node of first and second high power transistor IGBT series connection and the node of first and second half-bridge electric capacity are connected by the elementary of step-up transformer; first and second fly-wheel diodes are connected in reverse parallel in respectively between the collector electrode and emitter of the first and second high power transistor IGBT; first and second input resistances also are attached to the base stage of first power transistor IGBT; third and fourth input resistance also is attached to the base stage of second largest power transistor IGBT; in parallel after the first and second voltage-stabiliser tube differential concatenations with first input protection resistor; and the base stage that the is connected to first power transistor IGBT node of connecting with the first and second high power transistor IGBT; in parallel after the third and fourth voltage-stabiliser tube differential concatenation with second input protection resistor, and be connected to the node of the second largest power transistor IGBT and the second half-bridge electric capacity.
High-power high voltage dc static supply unit of the present invention, wherein, described step-up transformer comprises three transformers; Three transformer parallel connections, secondary coil are connected after the rectification respectively again, the output high voltage direct current.
High-power high voltage dc static supply unit of the present invention, wherein, described microprocessor employing model is 8031 single-chip microcomputer.
High-power high voltage dc static supply unit of the present invention, wherein, described voltage regulating rectification circuit adopts voltage regulator.
High-power high voltage dc static supply unit of the present invention has following advantage:
1, in this device with the organic combination of inversion driver, inverter and step-up transformer, realized the stable high-voltage DC power supply of microcomputer automatic control, make power supply can remain on the best working point.When power supply is used for dust cleaning apparatus, can obtain very high ash removal efficiency.
2, used inverter in this device, the high-frequency ac voltage of outputting standard makes that power work is stable, power consumption is little, efficient is high, compares with similar power supply, and bigger power output is arranged.
3, adopted the inversion Drive Module to drive IGBT in the inverter in this device, made domestic " high-frequency high-power inverter circuit " can't realize that a blank of high frequency, high power contravariant circuit is solved.
4, designed the high-power high voltage transformer method of directly boosting in this device.With the parallel connection of primary windings of three transformers, secondary coil is connected after the rectification respectively again, has reached the purpose that realizes high-power, has opened up the frontier of China's high voltage step-up.Owing to adopted the high frequency transformer method of directly boosting, the feasible element that boosts is few, simple in structure, surpassed the level of utilizing capacitance voltage-multiplying to boost, the most important is the problem that has solved distributed capacitance Cs, leakage inductance Ls effectively, improved the output of high-tension current, and volume ratio power frequency stepup transformer is little tens times, and is littler several times than the multiplication of voltage stepup transformer volume with constant power.
5, adopt the modular driving in this device, made circuit very simple, and the reliability height, be easy to produce, helped China's development of electric power industry, increased economic benefit and social benefit.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is the block diagram that the present invention realizes high pressure and control procedure;
Fig. 2 is inversion driving of the present invention and inverter schematic diagram;
Fig. 3 is a step-up transformer winding diagram of the present invention;
Fig. 4 is circuit theory diagrams of the present invention.
Embodiment
Referring to Fig. 1, supply unit provides power supply by isolating transformer to whole circuit.At first offer the voltage regulator alternating current, over-voltage over-current protection circuit is delivered to microprocessor with voltage, current signal simultaneously, realizes over-current over-voltage protection.Voltage regulating rectification circuit is controlled pressure regulation by microprocessor, and promptly microprocessor receives voltage, the current sampling signal that over-voltage over-current protection circuit transmits, with preset value relatively, if greater than preset value, the then microprocessor output of circuit of cutting off the electricity supply guarantees the safety of circuit; Also to output valve sampling, the judgement of rectifying output circuit, in preset range, microprocessor is exported control signal, voltage regulating rectification circuit break-off to microprocessor as if this magnitude of voltage.Voltage regulating rectification circuit output galvanic current is to inverter.Two square waves that drive take place in the inversion driver, and the IGBT of inverter is driven.The direct current that inverter is sent voltage regulating rectification circuit here becomes high-frequency alternating current, boosts for step-up transformer.The driver of inversion simultaneously detects the electric current of inverter, stops to export square wave if electric current is excessive; Microprocessor detects the output signal of inversion driver, if inversion driver no-output, the microprocessor control circuit of cutting off the electricity supply then restarts after this device is stopped.The former limit of step-up transformer is with the high-frequency ac electric boost of inverter output, through rectifying output circuit output high voltage direct current.Simultaneously, step-up transformer is by second current foldback circuit, and output current signal provides the load overcurrent protection to microprocessor.
Referring to Fig. 2, integrated two Schmidt triggers of wherein inversion internal drive, two and door, two isolation links, two level match devices, two power drive utmost points, two overcurrent detection comparators, a supply voltage monitoring and an error monitoring network, totally eight element circuits.When input signal after P8, P12 enter driver, carry out shaping by the Schmidt trigger paired pulses, pulse after the shaping through one with enter the isolating transformer primary side behind the door, its secondary side obtains the drive signal with the input pulse homophase, through S8, S14 output, make IGBT conduction inverter brachium pontis center tap, be connected with inverter half-bridge electric capacity mid point by the former limit of step-up transformer, with dc inverter is alternating current, boosts for step-up transformer.
Inverter has adopted high power transistor IGBT, i.e. Q1, Q2.Inverter is by being that Q1, Q2, the first and second half-bridge capacitor C 9, C10, first and second sustained diode 9, D8 form with first to fourth input resistance R19, R20, R22, R23, the first and second input protection resistor R26, R25, first to fourth voltage-stabiliser tube D4-D7, the first and second high power transistor IGBT that the inversion driver output end links to each other respectively; The first and second high power transistor IGBT are Q1; the Q2 and the first and second half-bridge capacitor C 9; C10 forms inverter bridge; first and second high power transistor IGBT is Q1; node and first and second half-bridge capacitor C 9 of Q2 series connection; the node of C10 is connected by the elementary of step-up transformer; first and second sustained diode 9; it is Q1 that D8 is connected in reverse parallel in the first and second high power transistor IGBT respectively; between the collector electrode and emitter of Q2; the first and second input resistance R19; R20 and the base stage that to be attached to first power transistor IGBT be Q1; the third and fourth input resistance R22; R23 and the base stage that to be attached to second largest power transistor IGBT be Q2; in parallel after the first and second voltage-stabiliser tube D4-D5 differential concatenations with the first input protection resistor R26; and the base stage and the first and second high power transistor IGBT that to be connected to first power transistor IGBT be Q1 are Q1; the node of Q2 series connection; in parallel after the third and fourth voltage-stabiliser tube D6-D7 differential concatenation with the second input protection resistor R25, and the node that to be connected to second largest power transistor IGBT be the Q2 and the second half-bridge capacitor C 10.Step-up transformer among the figure is a sketch, and its concrete structure is seen Fig. 3.
Referring to Fig. 3, step-up transformer comprises three transformers, and the parallel connection of primary windings of each transformer, secondary coil are connected after the rectification respectively again, the output high voltage direct current.
Referring to Fig. 4, wherein the physical circuit of inversion driver is referring to Fig. 2, and the physical circuit of step-up transformer is referring to Fig. 3.Voltage regulating rectification circuit adopts voltage regulator, and first and second current foldback circuits, over-voltage over-current protection circuit and pulse generator are known circuit, there is no specific (special) requirements in the present invention.It is 8031 single-chip microcomputer that microprocessor adopts model, has shown the annexation of itself and other circuit among the figure, and wherein input signal is connected with the input/output interface of microprocessor.
Claims (6)
1. high-power high voltage dc static supply unit, comprise power circuit and the voltage regulating rectification circuit that links to each other successively, inverter, step-up transformer and rectifying output circuit, inverter is connected to the inversion driver, wherein, power circuit provides power supply by isolating transformer to whole circuit, voltage regulating rectification circuit receives the alternating current that power circuit transmits, the output galvanic current is to inverter, and the inversion driver produces two square waves that drive, and inverter is driven; The direct current that inverter is sent voltage regulating rectification circuit here is transformed into high-frequency alternating current, boosts for step-up transformer, and the high-frequency ac electric boost that step-up transformer is exported inverter, and through rectifying output circuit, the output high voltage direct current; It is characterized in that:
Also comprise first current foldback circuit, microprocessor and over-voltage over-current protection circuit and second current foldback circuit, wherein:
First current foldback circuit is gathered the current signal of inverter and is delivered to the inversion driver, and the inversion driver detects this electric current, if electric current greater than preset value, then the inversion driver stops output pulse signal;
Over-voltage over-current protection circuit is gathered voltage, the current signal of voltage regulating rectification circuit and is delivered to microprocessor, and whether this voltage of microprocessor judges, electric current are higher than preset value, if be higher than, then exports control signal, the output of the circuit of cutting off the electricity supply;
Step-up transformer is by second current foldback circuit, and output current signal is to microprocessor, and whether this electric current of microprocessor judges is higher than preset value, if be higher than, then exports control signal, the output of the circuit of cutting off the electricity supply;
Microprocessor detects the pulse signal of inversion driver output, if the output of inversion driver no signal, microprocessor output control signal, the output of the circuit of cutting off the electricity supply;
Microprocessor is to judgements of sampling of the high-voltage dc voltage of rectifying output circuit output, if this magnitude of voltage is in preset range, microprocessor is exported control signal and delivered to voltage regulating rectification circuit.
2. high-power high voltage dc static supply unit according to claim 1 is characterized in that: a pulse generator provides pulse signal for the inversion driver; Pulse signal enters driver through the input (P8, P12) of inversion driver, by Schmidt trigger this signal is carried out shaping, pulse after the shaping through one with enter the isolating transformer primary side behind the door, its secondary side obtains the drive signal with the input pulse homophase, is exported by inversion output end of driver (S8, S14).
3. high-power high voltage dc static supply unit according to claim 2 is characterized in that: described inverter adopts high power transistor IGBT (Q1, Q2); Inverter is by forming with first to fourth input resistance (R19, R20, R22, R23), first and second input protection resistors (R26, R25), first to fourth voltage-stabiliser tube (D4-D7), the first and second high power transistor IGBT (Q1, Q2), the first and second half-bridge electric capacity (C9, C10), first and second fly-wheel diodes (D9, D8) that the inversion driver output end links to each other respectively; The first and second high power transistor IGBT (Q1; Q2) and the first and second half-bridge electric capacity (C9; C10) form inverter bridge; first and second high power transistor IGBT (Q1; Q2) Chuan Lian node and first and second half-bridge electric capacity (C9; C10) node is connected by the elementary of step-up transformer; first and second fly-wheel diode (the D9; D8) be connected in reverse parallel in the first and second high power transistor IGBT (Q1 respectively; Q2) between the collector electrode and emitter; first and second input resistance (the R19; R20) and be attached to the base stage of first power transistor IGBT (Q1); third and fourth input resistance (the R22; R23) and be attached to the base stage of second largest power transistor IGBT (Q2); in parallel after first and second voltage-stabiliser tubes (D4-D5) differential concatenation with first input protection resistor (R26); and be connected to the base stage and the first and second high power transistor IGBT (Q1 of first power transistor IGBT (Q1); Q2) Chuan Lian node; in parallel after third and fourth voltage-stabiliser tube (D6-D7) differential concatenation with second input protection resistor (R25), and be connected to the node of second largest power transistor IGBT (Q2) and the second half-bridge electric capacity (C10).
4. high-power high voltage dc static supply unit according to claim 3 is characterized in that: described step-up transformer comprises three transformers; Three transformer parallel connections, secondary coil are connected after the rectification respectively again, the output high voltage direct current.
5. high-power high voltage dc static supply unit according to claim 4 is characterized in that: described microprocessor employing model is 8031 single-chip microcomputer.
6. high-power high voltage dc static supply unit according to claim 5 is characterized in that: described voltage regulating rectification circuit adopts voltage regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121413 CN1245796C (en) | 2002-06-20 | 2002-06-20 | High-power high-voltage D. C. electrostatic electric power unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121413 CN1245796C (en) | 2002-06-20 | 2002-06-20 | High-power high-voltage D. C. electrostatic electric power unit |
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| CN1464626A CN1464626A (en) | 2003-12-31 |
| CN1245796C true CN1245796C (en) | 2006-03-15 |
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| CN 02121413 Expired - Fee Related CN1245796C (en) | 2002-06-20 | 2002-06-20 | High-power high-voltage D. C. electrostatic electric power unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188900B (en) * | 2007-10-17 | 2011-07-20 | 廖云峰 | Medical diagnosis X ray high-frequency and high-voltage generator based on dual-bed and dual-tube |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755931A (en) * | 2011-12-21 | 2012-10-31 | 厦门锐传科技有限公司 | Variable-frequency medium-frequency power supply for electrostatic dust collection |
| CN103298231A (en) * | 2012-02-28 | 2013-09-11 | 南京普爱射线影像设备有限公司 | Invertion device for high pressure generator of cold cathode X-ray ray tube |
| CN102780384A (en) * | 2012-08-22 | 2012-11-14 | 成都中大华瑞科技有限公司 | High-performance low-cost IGBT (Insulated Gate Bipolar Translator) negative pressure bootstrap drive circuit |
| JP2016025617A (en) * | 2014-07-24 | 2016-02-08 | 矢崎総業株式会社 | Schmidt trigger circuit and power supply monitor device |
| CN104734185B (en) * | 2015-02-13 | 2017-06-20 | 华中科技大学 | A kind of Tokamak Plasma energy of rupture processing unit and processing method |
| EP3527462B1 (en) * | 2016-10-13 | 2020-12-30 | Mitsubishi Electric Corporation | Electric power steering apparatus |
-
2002
- 2002-06-20 CN CN 02121413 patent/CN1245796C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188900B (en) * | 2007-10-17 | 2011-07-20 | 廖云峰 | Medical diagnosis X ray high-frequency and high-voltage generator based on dual-bed and dual-tube |
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Owner name: BEIJING TIANDISIHAI ENVIRONMENTAL TECHNOLOGY CO.L Free format text: FORMER OWNER: WEN FUSHENG; CHANG GUANGYUE Effective date: 20070720 |
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Effective date of registration: 20070720 Address after: 100080, No. 1329, block C, building 1, Beijing Zhongguancun Software Park incubator, Haidian District, Beijing, Northeast China Patentee after: Beijing Tiandi Sihai environmental protection science and Technology Co Ltd Address before: 100037 Beijing city Xicheng District Yuetanbeijie Hospital No. 25, 36 building 3 unit 001 room Co-patentee before: Chang Guangyue Patentee before: Wen Fusheng |
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Application publication date: 20031231 Assignee: Quzhou yuan environmental protection equipment Co. Assignor: Beijing Tiandi Sihai environmental protection science and Technology Co Ltd Contract record no.: 2010990000088 Denomination of invention: High-power high-voltage D. C. electrostatic electric power unit Granted publication date: 20060315 License type: Exclusive License Record date: 20100221 |
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