CN205356156U - Intelligent high frequency and high voltage DC power supply based on DSP - Google Patents
Intelligent high frequency and high voltage DC power supply based on DSP Download PDFInfo
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- CN205356156U CN205356156U CN201620134204.9U CN201620134204U CN205356156U CN 205356156 U CN205356156 U CN 205356156U CN 201620134204 U CN201620134204 U CN 201620134204U CN 205356156 U CN205356156 U CN 205356156U
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Abstract
The utility model discloses an intelligent high frequency and high voltage DC power supply based on DSP, it is by inverter unit (1), based on DSP's controller (2) and high voltage generator (3) constituteing, inverter unit (1) comprises direct current support electric capacity C1, 4 IGBT, resonant capacitor C2 and inductance L1, electric capacity C1 and IGBT Q1, Q2's collecting electrode links to each other, and IGBT Q1, Q2's projecting pole links to each other with IGBT Q3, Q4's collecting electrode respectively, and resonant capacitor C2 and T1 in inductance L1 and the high voltage generator establish ties elementarily mutually. It utilizes IGBT contravariant high frequency electric source and DSP control technique to combine in electrostatic precipitation, and beneficial effect is: output is 3 times of single phase power under the the same conditions, and the corona effect improves 30%, burst short circuit and sustained short -circuit are allowwed in the automatic constant current of full -scale range, realize automated control, carry out the communication through fiber optic ethernet and DCS system.
Description
Technical field
This utility model belongs to chemical industry environmental protection equipment technical field, particularly relates to the intelligent high frequency high voltage dc power source based on DSP, and it is exclusively used in chemical field chemical industry environmental protection equipment electrical tar precipitator, dry collector and wet scrubber.
Background technology
Precipitator is to utilize the highfield applied in body to make gas ionize, and namely produces corona discharge, and then makes dust charged, and under the effect of electric field force, device dust separated from gas and is trapped.The efficiency of dust collection of precipitator depends on the migration velocity to charged dust, and its migration velocity is directly proportional to the meansigma methods of corona current, is also directly proportional to secondary voltage meansigma methods；As can be seen here, arresting efficiency to be improved and should improve mean voltage and the electric current (power) of precipitator as far as possible.
Generally adopting single-phase L-C constant-current source, single-phase IGCT constant-current source and three-phase thyristor constant-current source to use as main power source in electrostatic precipitation industry, these three power supply and high frequency electric source have a disadvantage in that single phase poaer supply three-phase imbalance, have phase shortage loss；Single phase poaer supply output voltage ripple coefficient is big, and flashover easily occurs, and output is less；Although three-phase thyristor power supply output ripple coefficient is low, but IGCT response speed is slow, and when flashing discharges, the discharge period is long, and spark is big, especially to inflammable and explosive gas, very risky.
Along with environmental protection policy is proposed tightened up requirement by country, tradition electric cleaner is faced with new technological challenge.Particularly the advanced treating of thermal power plant and steel plant's flue gas has become main perpetual object, wet electrical dust precipitator (WESP) will become the ultimate preferred unit of thermoelectricity, steel industry exhaust-gas treatment, wet electrical dust precipitator is to PM2.5, PM10, SO3 has significantly high removal efficiency, but the anode major part that wet electrical dust precipitator uses is electroconductive frp, during spray deashing, flashover or transient short-circuit in electric cleaner, is occurred to can hardly be avoided.After power plant desulfurization, the exhaust gas volumn of wet electrical dust precipitator is all relatively larger, the unit to more than 660MW, and the specification of the power supply that wet electrical dust precipitator is joined is typically greater than 72kV/1.6A.When electric field capacity is big, power is high, when flashover occurs in electric field, the difficulty of arc extinguishing increases, and spark is also big to the injury of body.
Prior art there is also three-phase L-C constant-current source, the shortcoming that three-phase L-C constant-current source ubiquity is bulky, cost is high；Constant current in constant-current source is stepping step constant current simultaneously, and it is unfavorable for reaching peak power output.
Utility model content
In order to solve the problems referred to above, this utility model people is through repeatedly design and research, it is proposed that a kind of intelligent high frequency high voltage dc power source based on DSP, and it is exclusively used in chemical field chemical industry environmental protection equipment electrical tar precipitator, dry collector and wet scrubber.
According to technology contents of the present utility model, it is provided that based on the intelligent high frequency high voltage dc power source of DSP, it is characterised in that: form based on controller 2 and high tension generator 3 by inversion unit 1, based on DSP of the intelligent high frequency high voltage dc power source of DSP；Inversion unit 1 is made up of DC support electric capacity C1,4 IGBT, resonant capacitance C2 and inductance L1；Electric capacity C1 and IGBTQ1, Q2 colelctor electrode be connected, the emitter stage of IGBTQ1, Q2 is connected with the colelctor electrode of IGBTQ3, Q4 respectively, and resonant capacitance C2 and inductance L1 and the T1 primary in high tension generator are in series.
Further, based in the intelligent high frequency high voltage dc power source of DSP, Support Capacitor C1 completes filter function from externally obtained DC energy, become the direct current smoothed, the direct current of supply Q1, Q2, Q3, Q4 composition becomes the inverter of exchange, resonant capacitance C2, inductance L1, transformer T1 primary composition resonant tank, it is provided that exchange oscillating current, supplies next stage.
Further, based in the intelligent high frequency high voltage dc power source of DSP, the controller based on DSP is made up of DSP, PFM generator, signal conditioning circuit, optical fiber router and touch screen；DSP is connected with signal conditioning circuit, PFM generator and optical fiber router respectively, and PFM generator is connected with the drive circuit of Q1, Q2, Q3, Q4 respectively.
Further, based in the intelligent high frequency high voltage dc power source of DSP, optical fiber router exports one group and arrives host computer；High tension generator 3 is made up of high frequency high voltage transformer, rectifying bridge type silicon stack and current/voltage sample circuit；High frequency high voltage transformer T1 is connected with anode and the resistance R1 of diode D1, D2, and the negative electrode of diode D1, D2 is connected with the anode of diode D3, D4, and the negative electrode of diode D3, D4 is connected to resistance R3, R1 and R2 and is connected, and resistance R2 and R3 is connected to protecting field；High frequency high voltage transformer TI output AC voltage through D1 D2 D3 D4 rectification be negative dc high voltage output, R1 R2 composition series connection reduction voltage circuit, resistance R3 is shunt circuit.
Additionally, after being sampled by signal condition based on the controller of DSP, control PFM generator and send suitable frequency, process current/voltage feedback signal, form closed loop control；Being shown that state control by device to touch screen by optical line, and output signal to host computer, multiple signals configuration on host computer realizes a host computer multichannel Combining soft control.
Advantage based on the intelligent high frequency high voltage dc power source of DSP of the present utility model is in that:
1, three-phase equilibrium, damages without phase shortage, and power factor consistently achieves more than 0.95, and electric network pollution is little, and Electro Magnetic Compatibility is good；
2, main device switching frequency 20KHZ, ripple factor is lower than 0.5%, it is suppressed that crest voltage, it is provided that bigger power；Being output as constant current output, during spark discharge, response speed is lower than 70uS, and equal three phase mains response time, more than 3.3mS, can prevent the damage of antianode electroconductive frp；
3, volume weight reduces to less than 1/5, saves material；
4, intelligent and control based on network technology are adopted, it is achieved with upper machine communication, by 15 these power supplys of computer management, it is achieved the Centralized Monitoring of system, and each power supply again can independent operating；Accessible the Internet, manufacturer can the operation conditions of monitoring device at any time, it is achieved the remote guide of equipment and remote technology service.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the intelligent high frequency high voltage dc power source based on DSP of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.Additionally, protection domain of the present utility model only should not limited to following concrete structure or parts or design parameter.
Intelligent high frequency high voltage dc power source based on DSP of the present utility model is the novel high-pressure DC source using IGBT inversion high-frequency power supply and DSP control technology to combine in electrostatic precipitation, and its main device adopts IGBT, controls device employing DSP.Intelligent high frequency high voltage dc power source output based on DSP of the present utility model is 3 times of single phase poaer supply under equal conditions, and corona effects improves 30%；Gamut automatic constant current, it is allowed to sudden short circuit and sustained short-circuit；Realize Automated condtrol, carry out communication by fiber optic Ethernet and DCS system.
" high frequency ", " high pressure " are the Essential Terms in electron and electrician circuit, namely its implication or define according to prior art definition.
Of the present utility model based in the intelligent high frequency high voltage dc power source of DSP, mainly formed LCC resonance inversion loop by 4 groups of IGBT Yu LC and high-tension transformer and load, its inverter mode is controlled by based on the PFM generator in the controller of DSP, PFM generator is constant for output single pulse width, the train of pulse of changeable frequency, frequency is more high, and output is more big；High tension generator, through bridge-type silicon stack group rectification, forms negative high voltage and improves to load.Resistance R1 in Fig. 1 R2 dividing potential drop send into signal conditioning circuit, be used for showing current output voltage, and as condition input signals such as overvoltage circuit, constant voltage circuit, flashovers；Pressure drop on resistance R3 sends into signal conditioning circuit as current signal, is used for showing and currently exports electric current, and as the input signal of the states such as overcurrent circuit, constant-current circuit, flashover；The signal of signal conditioning circuit output sends into DSP, changes and calculation process through the A/D of DSP, controls PFM generator and sends current optimum frequency, makes equipment be in optimum Working；When curtage exceedes setting value, DSP makes PFM lower frequency, makes output curtage reduce；When load generation flashover, electric current can sharply increase, and DSP detects the current value sharply increased that signal conditioning circuit is sent into, and reduces PFM frequency, reduces output voltage to currently flashover not occurring.
This patent, based on the single pulse width 20us of the intelligent high frequency high voltage dc power source of DSP, postpones through signal processing, and response speed reaches 60us, than thyristor high-voltage equipment fast response time 55 times；DSP and optical fiber router communication, its output signal sends into touch screen and host computer, and completion status shows and the control of host computer, display and configuration.
With reference to shown in accompanying drawing 1, form based on controller 2 and high tension generator 3 by inversion unit 1, based on DSP of the intelligent high frequency high voltage dc power source of DSP；Inversion unit 1 is made up of DC support electric capacity C1,4 IGBT, resonant capacitance C2 and inductance L1；Electric capacity C1 and IGBTQ1, Q2 colelctor electrode be connected, the emitter stage of IGBTQ1, Q2 is connected with the colelctor electrode of IGBTQ3, Q4 respectively, and resonant capacitance C2 and inductance L1 and the T1 primary in high tension generator are in series；Support Capacitor C1 completes filter function from externally obtained DC energy, become the direct current smoothed, the direct current of supply Q1, Q2, Q3, Q4 composition becomes the inverter of exchange, resonant capacitance C2, inductance L1, high frequency high voltage transformer T1 primary composition resonant tank, exchange oscillating current is provided, supplies next stage.
Further, it is made up of DSP, PFM generator, signal conditioning circuit, optical fiber router and touch screen based on the controller of DSP；DSP is connected with signal conditioning circuit, PFM generator and optical fiber router respectively, and PFM generator is connected with the drive circuit of Q1, Q2, Q3, Q4 respectively；Optical fiber router exports one group and arrives host computer；High tension generator 3 is made up of high frequency high voltage transformer, rectifying bridge type silicon stack and current/voltage sample circuit；High frequency high voltage transformer T1 and D1, D2 anode be connected with R1, the negative electrode of D1, D2 is connected with the anode of D3, D4, the negative electrode of D3, D4 be connected to resistance R3, R1 and R2 be connected, R2 and R3 is connected to protecting field；TI output AC voltage through D1 D2 D3 D4 rectification be negative dc high voltage output, R1 R2 composition series connection reduction voltage circuit, R3 is shunt circuit.
After being sampled by signal condition based on the controller of DSP, control PFM generator and send suitable frequency, process current/voltage feedback signal, form closed loop control；Being shown that state control by device to touch screen by optical line, and output signal to host computer, multiple signals configuration on host computer realizes a host computer multichannel Combining soft control.
This utility model, based on the intelligent high frequency high voltage dc power source of DSP, has following technical advantage:
1, three-phase equilibrium, damages without phase shortage, and power factor consistently achieves more than 0.95, and electric network pollution is little, and Electro Magnetic Compatibility is good；
2, main device switching frequency 20KHZ, ripple factor is lower than 0.5%, it is suppressed that crest voltage, it is provided that bigger power；Being output as constant current output, during spark discharge, response speed is lower than 70uS, and equal three phase mains response time, more than 3.3mS, can prevent the damage of antianode electroconductive frp；
3, volume weight reduces to less than 1/5, saves material；
4, intelligent and control based on network technology are adopted, it is achieved with upper machine communication, by 15 these power supplys of computer management, it is achieved the Centralized Monitoring of system, and each power supply again can independent operating；Accessible the Internet, manufacturer can the operation conditions of monitoring device at any time, it is achieved the remote guide of equipment and remote technology service.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should be encompassed within protection domain of the present utility model.Those skilled in the art is appreciated that when the spirit and scope of the present utility model defined without departing substantially from claims, it is possible to make various amendment in form and details.
Claims (5)
1. based on the intelligent high frequency high voltage dc power source of DSP, it is characterised in that: form based on controller (2) and high tension generator (3) by inversion unit (1), based on DSP of the intelligent high frequency high voltage dc power source of DSP；Inversion unit (1) is made up of DC support electric capacity C1,4 IGBT, resonant capacitance C2 and inductance L1；Electric capacity C1 and IGBTQ1, Q2 colelctor electrode be connected, the emitter stage of IGBTQ1, Q2 is connected with the colelctor electrode of IGBTQ3, Q4 respectively, and resonant capacitance C2 and inductance L1 and the T1 primary in high tension generator are in series.
2. the intelligent high frequency high voltage dc power source based on DSP according to claim 1, it is characterized in that: Support Capacitor C1 completes filter function from externally obtained DC energy, become the direct current smoothed, the direct current of supply Q1, Q2, Q3, Q4 composition becomes the inverter of exchange, resonant capacitance C2, inductance L1, transformer T1 primary composition resonant tank, exchange oscillating current is provided, supplies next stage.
3. the intelligent high frequency high voltage dc power source based on DSP according to claim 1, it is characterised in that: the controller based on DSP is made up of DSP, PFM generator, signal conditioning circuit, optical fiber router and touch screen；DSP is connected with signal conditioning circuit, PFM generator and optical fiber router respectively, and PFM generator is connected with the drive circuit of Q1, Q2, Q3, Q4 respectively.
4. the intelligent high frequency high voltage dc power source based on DSP according to claim 1, it is characterised in that: optical fiber router exports one group and arrives host computer；High tension generator (3) is made up of high frequency high voltage transformer, rectifying bridge type silicon stack and current/voltage sample circuit；High frequency high voltage transformer T1 is connected with anode and the resistance R1 of diode D1, D2, and the negative electrode of diode D1, D2 is connected with the anode of diode D3, D4, and the negative electrode of diode D3, D4 is connected to resistance R3, R1 and R2 and is connected, and resistance R2 and R3 is connected to protecting field；High frequency high voltage transformer TI output AC voltage through D1 D2 D3 D4 rectification be negative dc high voltage output, R1 R2 composition series connection reduction voltage circuit, resistance R3 is shunt circuit.
5. the intelligent high frequency high voltage dc power source based on DSP according to claim 1, it is characterized in that: after being sampled by signal condition based on the controller of DSP, control PFM generator and send suitable frequency, process current/voltage feedback signal, form closed loop control；Being shown that state control by device to touch screen by optical line, and output signal to host computer, multiple signals configuration on host computer realizes a host computer multichannel Combining soft control.
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| CN201620134204.9U CN205356156U (en) | 2016-02-19 | 2016-02-19 | Intelligent high frequency and high voltage DC power supply based on DSP |
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| CN201620134204.9U CN205356156U (en) | 2016-02-19 | 2016-02-19 | Intelligent high frequency and high voltage DC power supply based on DSP |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107368142A (en) * | 2017-08-15 | 2017-11-21 | 德阳护球环保科技有限公司 | A kind of intelligent hyperfrequency high voltage power supply |
| TWI636655B (en) * | 2017-04-20 | 2018-09-21 | 台達電子工業股份有限公司 | Power converter and control method thereof |
| CN108923389A (en) * | 2018-06-21 | 2018-11-30 | 核工业理化工程研究院 | Used in electron gun high frequency switch power supply system high pressure flashover short circuit protection system and guard method |
| CN110447163A (en) * | 2017-04-03 | 2019-11-12 | 三菱电机株式会社 | Power-converting device |
-
2016
- 2016-02-19 CN CN201620134204.9U patent/CN205356156U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447163A (en) * | 2017-04-03 | 2019-11-12 | 三菱电机株式会社 | Power-converting device |
| CN110447163B (en) * | 2017-04-03 | 2021-01-15 | 三菱电机株式会社 | Power conversion device |
| TWI636655B (en) * | 2017-04-20 | 2018-09-21 | 台達電子工業股份有限公司 | Power converter and control method thereof |
| CN107368142A (en) * | 2017-08-15 | 2017-11-21 | 德阳护球环保科技有限公司 | A kind of intelligent hyperfrequency high voltage power supply |
| CN107368142B (en) * | 2017-08-15 | 2018-09-11 | 德阳护球环保科技有限公司 | A kind of intelligence hyperfrequency high voltage power supply |
| CN108923389A (en) * | 2018-06-21 | 2018-11-30 | 核工业理化工程研究院 | Used in electron gun high frequency switch power supply system high pressure flashover short circuit protection system and guard method |
| CN108923389B (en) * | 2018-06-21 | 2024-02-09 | 核工业理化工程研究院 | High-voltage flashover short-circuit protection system and protection method for high-frequency switch power supply system for electron gun |
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