CN206595895U - High voltage high frequency bursts static dust-removing power antidisturbance control system - Google Patents
High voltage high frequency bursts static dust-removing power antidisturbance control system Download PDFInfo
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- CN206595895U CN206595895U CN201620657088.9U CN201620657088U CN206595895U CN 206595895 U CN206595895 U CN 206595895U CN 201620657088 U CN201620657088 U CN 201620657088U CN 206595895 U CN206595895 U CN 206595895U
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Abstract
The utility model discloses a kind of high voltage high frequency bursts static dust-removing power antidisturbance control system, including analog quantity acquisition circuit, modulate circuit, master controller, interference observer and IGBT drive circuit, analog quantity acquisition circuit is used to sampling the voltage and current analog signal of deduster output, and is converted into after data signal and sends modulate circuit to；Modulate circuit is used to nurse one's health the voltage and current data signal of reception, and sends the signal after conditioning to master controller；Master controller sends control signal to IGBT drive circuit according to signal output control signal after the conditioning of reception；Interference observer is compensated when there is disturbance to the control signal that master controller is exported, and realizes the complete inhibition to interference；IGBT drive circuit is used to be opened and be disconnected according to the control signal of reception, realization to output voltage and current amplitude, frequency, waveform control.This programme additional interference observer, it is easy to accomplish, cost it is relatively low, it is possible to increase efficiency of dust collection.
Description
Technical field
The utility model is related to a kind of high voltage high frequency bursts static dust-removing power antidisturbance control system and method, belongs to high
Press high-frequency high-power power technique fields.
Background technology
Electric cleaner due to efficiency of dust collection is high, processing exhaust gas volumn is big, operation and maintenance cost is low, non-secondary pollution etc. it is excellent
Point, is widely used in the smoke and dust treatment of the industrial circles such as electric power, metallurgy, building materials.
With the national economic development, country is to level of pollution control and requires to improve constantly, the control day to soot emissions
It is beneficial strict.This means the development of electrostatic precipitation technology will be faced with formidable challenges.Electric cleaner is that typical electromechanical integration is set
It is standby, it is made up of basic machine and electrical control two parts.Generally can be by increasing specific collection area, regulation electric field interval, improving
Electrode profile, final stage Mobile pole plate optimize the method for gas/Dust distribution to improve dust-collecting efficiency.But pass through high-tension electricity of upgrading
The method of source and control strategy realizes cost performance highest.
Utility model content
Utility model purpose：The problem of existing for prior art, it is anti-the utility model proposes a kind of static dust-removing power
Jamming decision and method, can improve power work efficiency and anti-under conditions of the environment such as power plant complexity, interference are larger
Interference performance.
Technical scheme：The utility model proposes a kind of high voltage high frequency bursts static dust-removing power antidisturbance control system, bag
Include analog quantity acquisition circuit, modulate circuit, master controller, interference observer and IGBT drive circuit, the analog acquisition
Circuit be used for sample deduster output voltage and current analog signal, and be converted into after data signal send to conditioning electricity
Road；The modulate circuit is used to nurse one's health the voltage and current data signal of reception, and the signal after conditioning is sent to
Master controller；The master controller sends control signal to IGBT according to signal output control signal after the conditioning of reception
Drive circuit；The interference observer is compensated when there is disturbance to the control signal that master controller is exported, and is realized to interference
Complete inhibition；The IGBT drive circuit is used to be opened and be disconnected according to the control signal of reception, realizes to output electricity
Pressure and current amplitude, frequency, the control of waveform.
Wherein, the interference observer includes low pass filter, the control signal superposition external disturbance of master controller output
After be delivered to interference observer, the control signal that interference observer exports the signal with former master controller is after LPF
Make the difference, obtain equivalent interference, then the output end by equivalent interference feedback to master controller, complete AF panel.Through overcompensation
Output Y (s) is expressed as：
Y (s)=Guy(s)Uc(s)+Gdy(s)D(s)
Wherein,
In formula, Uc(s) be master controller output control signal, U (s) be interference observer input, Y (s) is that system is defeated
Go out, Guy(s) it is Uc(s) to the forward path transmission function between Y (s), Gdy(s) to be D (s) pass to the forward path between Y (s)
Delivery function, D (s) is interference,It is equivalent interference, Gp(s) it is controll plant realistic model, Gn(s) it is that controll plant is nominal
Model, Q (s) is low pass filter.Low pass filter Q (s) design principle is：
(1) Q (s) relative exponent number should be no less than nominal model Gn(s), to ensure that control system is reasonable.
(2) in lower frequency region, Q (s), to ensure that lump disturbance estimate is approximately equal to actual value, should weaken extraneous dry close to 1
The influence disturbed.
When controlled device is expressed as：
Then, Q (s) is designed as：
In formula, z1…znIt is zero point, p1…pmIt is limit, l is zero pole point tuple, ak、bkIt is constant, τ is time constant, k
It is filter order, L, N are constant and meet L >=l-1, L >=0, N-L >=l+m-n.
The utility model also proposes a kind of high voltage high frequency bursts static dust-removing power anti-interference control method, including following step
Suddenly：
(1) analog quantity acquisition circuit gathers the output voltage and electric current of deduster, is translated into after data signal and transmits
To modulate circuit；
(2) after modulate circuit is nursed one's health voltage and current data signal, master controller is sent to；
(3) when there is disturbance input, disturbance-observer is delivered to after the control signal superposition external disturbance of master controller output
Device, interference observer makes the difference the control signal that the signal is exported with former master controller after LPF, obtains equivalent dry
Disturb, then the output end by equivalent interference feedback to master controller, complete AF panel；
(4) complete after AF panel, master controller output control signal, and send control signal to IGBT driving electricity
Road；
(5) IGBT drive circuit is opened and disconnected by it, is realized to output voltage and current amplitude, frequency, waveform
Control.
Beneficial effect：Electrostatic dust-removing electrical source is typically employed in the more rugged environment such as power plant, steel mill, sandpit
In, external interference is big, and higher, the dedusting power source control system control of no additional interference observer is required to the antijamming capability of equipment
Limited precision processed, it is impossible to obtain ideal dust removing effects, by the method cycle for improving environment or device structure it is longer, into
This is higher, and the utility model only needs additional interference observer in the controls, it is easy to accomplish, cost it is relatively low, can effectively carry
High efficiency of dust collection.
Brief description of the drawings
Fig. 1 is high voltage high frequency bursts power system structure schematic diagram；
Fig. 2 is the structural representation of high voltage high frequency bursts static dust-removing power antidisturbance control system；
Fig. 3 is interference observer control system architecture figure.
Embodiment
With reference to specific embodiment, utility model is further elucidated, it should be understood that these embodiments are merely to illustrate this reality
With new rather than limitation scope of the present utility model, after the utility model has been read, those skilled in the art are to this
The various equivalents of utility model fall within the application appended claims limited range.
As shown in figure 1, high voltage high frequency bursts power-supply system is by three-phase commutation bridge, high-frequency inverter circuit, switching and rectifying transformation
4 parts of device and control system are constituted.The system is the core of whole power-supply system, using high frequency switching inverter commutation technique as base
Plinth, realizes AC-DC-AC-DC power conversion process, and the high voltage power supply needed for providing normally is run for electric cleaner.Its work
Process：Three-phase 380V power frequency ACs export galvanic current pressure, supply MMC high-frequency inversion electricity after being filtered through controlled rectification
Road, MMC according to electric cleaner working conditions change output frequency, amplitude, width, flexibility and changeability alternating-current pulse, through transformer boost
After rectification, output high-voltage dc pulse voltage supply Electric Field in ESP.High voltage high frequency bursts power-supply system parameter is：
Rated output DC voltage：60kV、72kV、80kV；
Rated output DC current：400mA、600mA、1000mA、1200mA、1400mA、1600mA、 1800mA、
2000mA、2400mA；
Communication interface：RS-485/CAN/ Ethernets；
Input power：Three-phase AC 380V ± 10%, 50Hz ± 2.0Hz；
Use environment temperature：Switch board ambient temperature is -5 DEG C~+40 DEG C, and rectifier transformer ambient temperature is not
Higher than+40 DEG C, it is not less than condensation point temperature as defined in transformer oil.
As shown in Fig. 2 high voltage high frequency bursts static dust-removing power antidisturbance control system includes analog quantity acquisition circuit, adjusted
Manage circuit, master controller, interference observer and IGBT drive circuit.The analog quantity acquisition circuit sampling deduster output
Voltage and current analog signal, master controller is sent to after being converted into data signal, then the conditioning of conditioned circuit；Main control
Device outputs control signals to IGBT drive circuit, by controlling turning on and off for IGBT, realizes to output voltage and electric current width
Value, frequency, the control of waveform.When external environment is disturbed, the control signal that master controller can be influenceed to export, reduction control
Precision.Therefore, the utility model adds interference observer, when there is disturbance input, obtains equivalent dry by interference observer
Disturb, master controller output signal is compensated, realize the complete inhibition of interference.
The control method of above-mentioned high voltage high frequency bursts static dust-removing power antidisturbance control system, comprises the following steps：
(1) analog quantity acquisition circuit gathers the output voltage and electric current of deduster, is translated into after data signal and transmits
To modulate circuit；
(2) after modulate circuit is nursed one's health voltage and current data signal, master controller is sent to；
(3) when there is disturbance input, disturbance-observer is delivered to after the control signal superposition external disturbance of master controller output
Device, interference observer makes the difference the control signal that the signal is exported with former master controller after LPF, obtains equivalent dry
Disturb, then by the output end of equivalent interference feedback to master controller, complete AF panel；
(4) complete after AF panel, master controller output control signal, and send control signal to IGBT driving electricity
Road；
(5) IGBT drive circuit is opened and disconnected by it, is realized to output voltage and current amplitude, frequency, waveform
Control.
Antidisturbance control of the present utility model is described in detail below.Interference observer control system as shown in Figure 3
Structure chart, Uc(s) be master controller output control signal, U (s) be interference observer input, Y (s) be system output, D (s)
It is interference,It is equivalent interference, Gp(s) it is controll plant realistic model, Gn(s) it is controll plant nominal model, Q (s) is
Low pass filter.Equivalent interference can be obtainedFor
By the output end of equivalent interference feedback to master controller, you can realize the accurate compensation of interference, this is that this practicality is new
The basic thought of type.Interference observer control system architecture figure according to Fig. 3, can further be obtained using Mason's formula
System output Y (s) transmission function be
Y (s)=Guy(s)Uc(s)+Gdy(s)D(s) (2)
From formula (5), (6), ifSo
That is, external disturbance can be completely suppressed, and controlled device is approximately nominal model.
Q (s) design principles are as follows：
(1) Q (s) relative exponent number should be no less than nominal model Gn(s), to ensure that control system is reasonable.
(2) in lower frequency region, Q (s), to ensure that lump disturbance estimate is approximately equal to actual value, should weaken extraneous dry close to 1
The influence disturbed.
For the controlled device shown in formula (7), Q (s) may be designed as the form of formula (8)：
In formula, z1…znIt is zero point, p1…pmIt is limit, l is zero pole point tuple, ak、bkIt is constant, τ is time constant, k
It is filter order, L, N are constant and meet L >=l-1 (L >=0), N-L >=l+m-n.
By taking minimum phase system as an example, as shown in formula (9), formula (10)：
Based on above design principle, wave filter Q (s) can select single order low-pass form, and steady-state gain is 1, such as formula (11)
It is shown：
Wherein, parameter lambda=b1τ influences Interference Estimation precision.In fact, accurate Interference Estimation is passed depending on frequency characteristic
Delivery function 1-Q (s), and parameter lambda is smaller, then 1-Q (s) amplitude is smaller, therefore one relatively small λ of selection, Interference Estimation
Error convergence region also can be small it is many.
Claims (5)
1. high voltage high frequency bursts static dust-removing power antidisturbance control system, it is characterised in that including analog quantity acquisition circuit, adjust
Circuit, master controller, interference observer and IGBT drive circuit are managed, the analog quantity acquisition circuit is defeated for deduster of sampling
The voltage and current analog signal gone out, and be converted into after data signal and send modulate circuit to；The modulate circuit is used for
Voltage and current data signal to reception is nursed one's health, and sends the signal after conditioning to master controller；The main control
Device sends control signal to IGBT drive circuit according to signal output control signal after the conditioning of reception；The interference is seen
Device is surveyed when there is disturbance, the control signal that master controller is exported is compensated, the complete inhibition to interference is realized；The IGBT
Drive circuit is used to be opened and be disconnected according to the control signal of reception, realizes to output voltage and current amplitude, frequency, ripple
The control of shape.
2. high voltage high frequency bursts static dust-removing power antidisturbance control system according to claim 1, it is characterised in that institute
Stating interference observer includes low pass filter, and disturbance-observer is delivered to after the control signal superposition external disturbance of master controller output
Device, interference observer makes the difference the control signal that the signal is exported with former master controller after LPF, obtains equivalent dry
Disturb, then the output end by equivalent interference feedback to master controller, complete AF panel.
3. high voltage high frequency bursts static dust-removing power antidisturbance control system according to claim 1, it is characterised in that warp
The output Y (s) of overcompensation is expressed as：
Y (s)=Guy(s)Uc(s)+Gdy(s)D(s)
Wherein,
In formula, Uc(s) be master controller output control signal, U (s) be interference observer input, Y (s) be system output, Guy
(s) it is Uc(s) to the forward path transmission function between Y (s), Gdy(s) to be D (s) transmit letter to the forward path between Y (s)
Number, D (s) is interference,It is equivalent interference, Gp(s) it is controll plant realistic model, Gn(s) it is controll plant nominal model,
Q (s) is low pass filter.
4. high voltage high frequency bursts static dust-removing power antidisturbance control system according to claim 3, it is characterised in that institute
The design principle for stating low pass filter Q (s) is：
(1) Q (s) relative exponent number should be no less than nominal model Gn(s), to ensure that control system is reasonable；
(2) in lower frequency region, Q (s), to ensure that lump disturbance estimate is approximately equal to actual value, should weaken external interference close to 1
Influence.
5. high voltage high frequency bursts static dust-removing power antidisturbance control system according to claim 4, it is characterised in that when
Controlled device is expressed as：
Then, Q (s) is designed as：
In formula, z1…znIt is zero point, p1…pmIt is limit, l is zero pole point tuple, ak、bkIt is constant, τ is time constant, and k is filter
Ripple device exponent number, L, N are constant and meet L >=l-1, L >=0, N-L >=l+m-n.
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| CN201620657088.9U CN206595895U (en) | 2016-06-28 | 2016-06-28 | High voltage high frequency bursts static dust-removing power antidisturbance control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958834A (en) * | 2016-06-28 | 2016-09-21 | 南京比恩机电科技有限公司 | High-voltage high-frequency pulse electrostatic precipitation power supply anti-interference control system and method |
| CN109391165A (en) * | 2018-11-29 | 2019-02-26 | 东南大学 | A kind of interference compensation method based on Modular multilevel converter Circulation Model |
-
2016
- 2016-06-28 CN CN201620657088.9U patent/CN206595895U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958834A (en) * | 2016-06-28 | 2016-09-21 | 南京比恩机电科技有限公司 | High-voltage high-frequency pulse electrostatic precipitation power supply anti-interference control system and method |
| CN105958834B (en) * | 2016-06-28 | 2018-08-07 | 南京比恩机电科技有限公司 | High voltage high frequency bursts static dust-removing power antidisturbance control system and method |
| CN109391165A (en) * | 2018-11-29 | 2019-02-26 | 东南大学 | A kind of interference compensation method based on Modular multilevel converter Circulation Model |
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Granted publication date: 20171027 Effective date of abandoning: 20180807 |