CN108302733A - The parameter regulator control system and method for PDM power drives DBD air purifiers - Google Patents
The parameter regulator control system and method for PDM power drives DBD air purifiers Download PDFInfo
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- CN108302733A CN108302733A CN201810055732.9A CN201810055732A CN108302733A CN 108302733 A CN108302733 A CN 108302733A CN 201810055732 A CN201810055732 A CN 201810055732A CN 108302733 A CN108302733 A CN 108302733A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a kind of the parameter regulator control system and method for PDM power drives DBD air purifiers, system includes DBD reactors, programmable power supply, PDM high pressure activations power supply, reactor power supply ENERGY ETDetection unit, relative spectral power detection unit, tested gas concentration detection unit, gas flow rate adjustment unit and data acquisition and regulation and control unit;Atmospheric plasma is generated with the high pressure activation power drives electric discharge device for being operated in PDM patterns, detection obtains the electrical and optical initial parameter in discharge process, initial data is imported into master system and is further analyzed and calculates, whether apparatus for evaluating is operated in optimal discharge state, master system adjusts discharging condition in real time, it is ensured that whole system is operated in optimal discharge state.
Description
Technical field
The invention belongs to air purification fields, and in particular to a kind of parameter regulation and control of PDM power drives DBD air purifiers
System and method.
Background technology
In recent years, atmospheric pressure plasma was widely used in environment remediation, and contamination control is biomedical, flowing control
System and material processing etc..Dielectric barrier discharge (dielectric barrier discharge:DBD it is) to have dielectric
It is inserted into a kind of nonequilibrium state gas discharge of discharge space, has the characteristics that stable discharge and machining area are big, is under normal pressure
One of the effective ways for generating low temperature plasma, are suitable for large-scale industrial production, have broad application prospects.In reality
In, the supply voltage of DBD, supply current, for electricity parameters such as electric fluxs are pole in low temperature plasma research and application
Its important parameter, they interact in discharge process, the effect of generation, the electric discharge of the multiple micro discharge of joint effect and wait
The characteristic of gas ions.The accurate effective energy for measuring simultaneously calculation medium barrier discharge system, which will become, improves dielectric barrier discharge
The key point of energy is of great significance for improving the discharging efficiency of dielectric barrier discharge in the application.
It is uncertain with space-time since DBD consumes energy by a large amount of of short duration micro discharges, therefore output power and energy
Amount is difficult to measure.For the energy balane of this kind of electric discharge, generally use voltage-charge Lee Sa such as (Lissajous) graphic-arts technique.But
It is that there has been no methods to carry out standard to reactor for electric flux when electric discharge is discontinuous or supply voltage current peak is not fixed
Really calculate.If DBD under High Level AC Voltage source forcing is directly applied to for the computational methods of electric flux and is operated in power density tune
Make (power density modulation:PDM) reactor of the high pressure activation power drives of pattern is powered energy meter
It calculates, has the following problems:
(1) according to the flash-over characteristic of PDM power supplys, within one section of working time, voltage current waveform is discontinuous;
(2) strength of discharge of each power-up period is different with supply voltage current peak;
(3) in a power-up period, discharge time is adjustable, therefore discharge time interior at work is not solid
It is fixed.Therefore, traditional lissajous figures method calculate DBD for electric flux be not suitable for being applied directly to PDM power drives DBD systems into
Row energy expenditure is analyzed, if being capable of providing a kind of power supply energy method computations for using PDM power supplys excitation DBD inductors,
And the auto-control for realizing whole system, by the research of DBD, using with directive significance.
Documents:A kind of dielectric barrier discharge circuit parameter detection device and detection method (201310132909.8).
A kind of detect and calculation medium barrier discharge DBD reactor equivalent parameters detection devices and inspection is devised according to lissajous figures method
Survey method.But the patent mainly calculates the equivalent parameters of reactor according to lissajous figures, not to discontinuous, confession
The unfixed discharge condition of piezoelectric voltage peak value is analyzed, do not propose it is corresponding in the case of power supply energy balane algorithm idea and
Discharge effect appraisal procedure, and the auto-control of system is not implemented.
Optimal discharge state defines:Dielectric barrier discharge can generate the active specy with strong oxidizing property, when DBD reacts
When the unit energy consumed on device can generate the active specy of maximum concentration, system reaches optimal discharge state.Under this state
Discharge parameter and gas flow rate be optimal discharge condition.
Invention content
The purpose of the present invention is to provide one kind to be monitored in real time in the process of running to DBD air purifiers,
And the regulator control system that DBD devices are operated in best operating status is controlled, propose the automatic detection regulation and control system of DBD air purifiers
System and method, realization make DBD to the automatic detection of DBD system discharge parameters, assessment and to the adjust automatically of discharging condition
Reactor is operated in optimal discharge state.
The present invention adopts the following technical scheme that electric parameter and optical parameter towards DBD reactors diagnose, with PDM works
The high pressure activation power drives electric discharge device of operation mode generates atmospheric plasma, and is put using a series of detection means
Electrical and optical initial parameter in electric process, initial data is imported into master system be further analyzed with
Calculate, by lissajous figures calculate reactor for electric flux, then whether apparatus for evaluating is operated in optimal discharge state, together
When master system to discharging condition carry out real-time control, it is ensured that whole system is operated in optimal discharge state.
The parameter regulator control system of PDM power drives DBD air purifiers, including DBD reactors, programmable power supply,
PDM high pressure activations power supply, reactor are for electric flux (ET) detection unit, relative spectral power detection unit, tested gas concentration
Detection unit, gas flow rate adjustment unit and data acquisition and regulation and control unit, wherein:
DBD reactors generate high energy particle and Strong oxdiative substance purification air for discharging;
Programmable power supply, is connected with PDM high pressure activation power supplys, the input electricity for setting PDM high pressure activation power supplys
Pressure, and then control PDM high pressure activation power supplys and be supplied to the supply voltage of reactor and the power of discharge system, discharge system to include
PDM high pressure activations power supply and DBD reactors;
PDM high pressure activation power supplys, are connected with DBD reactors, as the excitation power supply of DBD reactors, for adjusting electric discharge
Condition;
Reactor power supply ENERGY ETDetection unit is connected with DBD reactors, is used for the electric parameter of detecting system, will count
According to data acquisition and regulation and control unit is transferred to, the ENERGY E of PDM power inputs consumption is obtainedIN, reactor is obtained for electric flux
ET;
Relative spectral power detection unit is connected with DBD reactors, emits light for detecting active specy in region of discharge
The relative intensity of spectrum, and transfer data to data acquisition and regulation and control unit;
Tested gas concentration detection unit is to detect the sensor of air quality, is located at the gas outlet of DBD reactors, is used
In the purified air quality of detection, and transmit data to data acquisition and regulation and control unit;
Gas flow rate adjustment unit is located at the air inlet of DBD reactors, for receiving data acquisition and regulation and control unit
Signal adjusts gas flow rate;
Data acquire and regulate and control unit, for receiving reactor power supply ENERGY ETThe electric parameter number of detection unit transmission
Active specy relative spectral power signal according to the transmission of, relative spectral power detection unit and tested gas concentration detection unit
The air quality data of transmission handles data in real time, assesses the working condition of DBD reactors, to programmable power supply electricity
Source, PDM high pressure activations power supply and gas flow rate carry out real-time control.
Preferably, reactor power supply ENERGY ETDetection unit includes high voltage attenuator, current transformer, voltage sensor
And digital oscilloscope, high voltage attenuator are connected to the high-voltage output end of PDM high pressure activation power supplys, measure the confession of DBD reactors
Piezoelectric voltage;Current transformer is connected on the ground wire in circuit, measures the discharge current for flowing through entire circuit;DBD reactors are put
Electrical circuit includes the integrating capacitor of one end connection ground wire, and the integral voltage in integrating capacitor is obtained by voltage sensor.
Preferably, high voltage attenuator uses capacitance partial pressure method, and the high-voltage signal of PDM high pressure activation power supplys output is converted
The supply voltage acquisition channel interface of digital oscilloscope is transferred at low voltage signal.
Preferably, current transformer is the uniform close air core solenoid being wound on annular nonmagnetic skeleton, output voltage with
Tested electric current is proportional, and the discharge current acquisition channel that the voltage signal that current transformer senses is accessed to digital oscilloscope connects
Mouthful.
Preferably, relative spectral power detection unit is fiber spectrometer, and electronics is occurred for active specy in discharge process
The optical signalling that energy level transition generates is converted into electric signal and acquires and regulate and control unit electric signal transmission to data.
Preferably, data acquisition is located at regulation and control unit in host computer, supply voltage, discharge current and the integral detected
Three electric parameters of voltage signal are acquired by digital oscilloscope, and host computer is transferred data to by oscillograph.
The parameter of PDM power drives DBD air purifiers regulates and controls method, includes the following steps:
(1) discharging condition of PDM high pressure activation power supplys, including supply voltage, frequency of supply, the frequency in Power Regulation period are set
Rate, the duty ratio of power-on time;
(2) it in discharge process, detects in discharge current, supply voltage, integral voltage and the region of discharge of DBD reactors
The relative spectral power of active specy will carry out original in discharge current, supply voltage and integral voltage signal input oscillograph
Data acquire;
(3) utilize data transmission interface and interactive software that digital oscilloscope and spectrometer are connected with host computer respectively,
The initial data that acquisition is stored on host computer obtains related discharge parameter by being calculated and handled in host computer, and by result
Output display;
(4) it assesses to obtain corresponding discharging condition and gas flow rate in optimal discharge effect according to discharge effect, determines
Parameter area;
(5) host computer is according to opposite quantum yield Energy Efficiency Ratio EerDischarging condition or gas flow rate are adjusted in real time, make reaction
Device is operated in best opposite quantum yield Energy Efficiency Ratio EerIn neighbouring threshold range.
Preferably, data calculate and processing step is followed successively by supply voltage processing, discharge current processing, for electric energy
Amount calculates, equivalent parameters calculates and opposite quantum yield Energy Efficiency Ratio calculates, and respectively obtains supply voltage peak-to-peak value, effectively puts
Always for electric flux, single power-up period average energy, reactor in electric total time, averagely micro discharge intensity, system operation time
Equivalent capacity, opposite quantum yield Energy Efficiency Ratio.
Preferably, supply voltage is detected by high voltage attenuator using capacitance partial pressure method, and high voltage signal is turned
It changes low voltage signal into be acquired, formula is as follows:
Wherein, UC2For CH1Hold collected voltage, CH1Indicate the supply voltage acquisition channel interface of oscillograph, U is quilt
Survey VRHThe voltage at end, VRHThe High voltage output terminal voltage of PDM high pressure activation power supplys, i.e. DBD reactors high voltage supply terminal voltage,
C1And C2For the capacitance of high-voltage capacitance;According to the data for the supply voltage acquisition channel for acquiring and storing in real time in host computer, conversion
Output is shown for the peak-to-peak value of actual power voltage.
Preferably, average micro discharge intensity and effectively electric discharge total time is calculated in discharge current process part, specific to walk
Suddenly it is:
101) discharge current is detected by current transformer;
102) discharge current waveform is reconstructed, obtained discharge current waveform is called in MATLAB
Sgolayfilt functions are smoothed using Savitzky-Golay smoothing algorithms;
103) original discharge current waveform subtracts each other with the current waveform that smoothing processing is crossed, and obtain in discharge process micro- puts
The Wave data of electric current;
104) the electric discharge initial time of each power-up period is obtained according to the Wave data of micro discharge electric current and electric discharge ends
Time, electric discharge deadline and initial time subtraction calculations of discharging go out effective discharge time of single power-up period, i.e. current wave
Effective discharge time of all power-up periods is added up and is effectively discharged total time by the time that micro discharge occurs in shape;
105) the micro discharge peak value of pulse of each power-up period is obtained according to the Wave data of micro discharge electric current, calculates electric discharge
Average micro discharge intensity in the process, average micro discharge intensity is the sum of peak value of all micro discharge pulses divided by micro discharge pulse
Number;
106) to total time and the average micro discharge intensity output display of effectively discharging in discharge process.
Preferably, the average energy of single power-up period and system in system operation is obtained by energy balane of powering to transport
Always for electric flux in the row time, specially:
111) basis obtains supply voltage and integral voltage carries out the lissajous figures reconstruct of single power-up period;
112) lissajous figures of each reconstruct are powered with the integral and calculating of voltage and integral voltage, obtains Li Saru
The area S of figured,i, the ENERGY E of single power-up period is obtained in conjunction with formulad,i
Wherein um(t) refer to integral voltage, CmFor the capacitance of external integrating capacitor, Td,iIndicate the time of single power-up period,
U (t) is supply voltage, and i (t) is supply current, and subscript d, i indicate the number of power-up period;
One Power Regulation cycle Tm,jInterior power-up period number ndm,jFor
Wherein ndm,jIt is a Power Regulation cycle Tm,jInterior power-up period number, DjIt is a Power Regulation cycle Tm,jWhen middle power supply
Between duty ratio, duty ratio adjusting range be Dj=0~1, subscript m, j indicates the cycle times of power density adjustment;
Wherein Ton,jIt is duration of power supply, total power-up period number N in run timeon,tFor
Non,tIt is total power-up period number, T in run timetIt is the operation total time of power supply system;
One Power Regulation cycle Tm,jAlways for electric flux be Power Regulation cycle Tm,jInterior single power-up period ENERGY Ed,iThe sum of, i.e.,
Em,jIt is Power Regulation cycle Tm,jAlways for electric flux, i.e. a Power Regulation cycle Tm,jThe gross energy of consumption;
The average power supply ENERGY E of single power-up periodd,aFor
The gross energy E of system consumption in run timeTFor
113) output shows ENERGY E of averagely poweringd,aWith the gross energy E of system consumption in run timeT。
Preferably, according to obtaining supply voltage and integral voltage carries out the lissajous figures of single power-up period and reconstructs, with
Integral voltage is abscissa data, supply voltage is that ordinate data carry out figure reconstruction, obtains what all power-up periods stacked
Lissajous figures carry out signal period image separation, and it is single lissajous figures to keep single power-up period corresponding, single to power
Periodic waveform data separating detailed process is as follows:
121) supply voltage, supply current, integral voltage data are read, the supply voltage maximum value in memory length is found out
The corresponding abscissa t of pointaAbscissa t corresponding with supply voltage minimum pointb, in the discharge waveform of PDM high pressure activation power supplys,
Supply voltage maximum value and minimum value are adjacent two extreme points, the corresponding abscissa t of supply voltage maximum of pointsaAnd power supply
The corresponding abscissa t of voltage minimum pointbBetween be divided into the time T of half of power-up periodd,i/2;
122) the corresponding abscissa t of selection supply voltage maximum of pointsaAbscissa t corresponding with supply voltage minimum pointb
Abscissa midpoint xi, from midpoint xiCorresponding coordinate starts, and abscissa successively decreases half of power-up period, after successively decreasing every time, after successively decreasing
Click-through line slope judge, if slope is more than setting thresholding, indicate the coordinate points in power supply process, continue to successively decrease until slope
Less than setting thresholding;If slope is less than setting thresholding, then it represents that the point is not in power supply process;
123) it is less than the point of setting thresholding for slope, is denoted as suspicious starting point p, setting thresholding is more than most for slope
The latter point, is denoted as q, and starting point is chosen using dichotomy in (p, q) range:
(a) p, the midpoint of q is taken to be denoted as m, alignment judges into line slope;
If (b) slope is less than setting thresholding, using the midpoint abscissa as the p of next range points, otherwise by the midpoint
Q point of the abscissa as next range;
(c) repeat (a) (b) until siding-to-siding block length be less than setting thresholding, if p, q siding-to-siding block length be less than setting thresholding, then this
When (p, q) midpoint be starting point, the abscissa of starting point is s;
124) since starting point, the abscissa of supply current is incremented by Td,i/ 2 length, to the click-through after being incremented by every time
Line slope judges, if slope is more than setting thresholding, abscissa continues to be incremented by until slope is less than setting thresholding;It is small for slope
In the point of setting thresholding, it is denoted as suspicious terminating point v, the last one point of setting thresholding is more than for slope, u is denoted as, at (u, v)
In range terminating point is chosen using dichotomy.
125) in the range of starting point is to terminating point, since starting point, each Td,iLength range is a power supply
Period respectively stores the coordinate of each point in each single power-up period, completes supply voltage, supply current, integral
The separation of voltage data.
Preferably, the equivalent capacity parameter of DBD reactors is calculated by equivalent parameters, according to supply voltage and integral
Voltage carries out the lissajous figures reconstruct of single power-up period, and four apex coordinates of lissajous figures are respectively A (Ux1,Uy1)、
B(Ux2,Uy2)、C(Ux3,Uy3)、D(Ux4,Uy4), the abscissa and ordinate on each vertex are respectively the integral electricity on corresponding time point
Pressure and supply voltage, the equivalent capacity data of single power-up period are obtained by following formula
Wherein C, CdAnd CgBe respectively single power-up period total equivalent capacity, medium equivalent capacity and discharging gap it is equivalent
Capacitance;
It is averaged to the rhythmic capacitance of institute, obtains equivalent capacity average value.
Preferably, according to collected relative spectral power data and the Power Regulation period-power-supplying ENERGY E being calculatedm,j, lead to
It crosses following formula and opposite quantum yield Energy Efficiency Ratio is calculated
Wherein, EerFor opposite quantum yield Energy Efficiency Ratio, I is the relative spectral power of hydroxyl.
Preferably, discharge effect assessment is to utilize climbing hill algorithm, with the discharging condition or gas stream in a Power Regulation period
Speed is horizontal axis, PDM power supply conversion efficiencies or opposite quantum yield Energy Efficiency Ratio EerFor the longitudinal axis, pass through the electric discharge of constantly regulate system
Condition or gas flow rate compare the opposite quantum yield Energy Efficiency Ratio E of the front and back DBD reactors of adjustmenterSituation of change, then root
Reactor is set to be operated in best opposite quantum yield Energy Efficiency Ratio E to adjust discharging condition or gas flow rate according to situation of changeerIt is attached
In close threshold range.
Preferably, it is the supply voltage peak value for changing PDM high voltage power supplies and being supplied to DBD reactors, tool to change discharging condition
Body is that the programmable power supply of master system is connected, and the output voltage of programmable power supply is adjusted from original state, can
Input voltage of the output voltage of power supply as PDM high pressure activation power supplys is programmed, DC/DC transformation is first passed through, it is variable to obtain amplitude
High-voltage dc voltage, high-voltage dc voltage obtains alternating voltage by full bridge inverter, using step-up transformer, obtains
Required output voltage;Master system finds best phase using newton hill-climbing algorithm during adjusting supply voltage
To quantum yield Energy Efficiency Ratio EerCorresponding power supply voltage range, by changing to may be programmed the real-time monitoring of power supply
PDM high pressure activation power supplys are supplied to the supply voltage of DBD reactors, make opposite quantum yield Energy Efficiency Ratio EerIt is maintained at best model
In enclosing.
Preferably, change discharging condition to change for electric flux, that is, adjust the duty of power-on time in a Power Regulation period
Than changing power density, changing the number that PDM power supplys are supplied to the power-up period of DBD reactors, to change for electric flux.
Preferably, it is to change supply voltage frequency to change discharging condition, PDM high pressure activations power supply and DBD reactor groups at
Series resonant tank adjusts power-up period Td,i, as change frequency of supply, system made to be operated in resonance match point, i.e. PDM high
Press the frequency of supply of excitation power supply identical as the resonant frequency of system.
The reached advantageous effect of invention:The present invention is a kind of parameter regulation and control system of PDM power drives DBD air purifiers
System and method, realization make DBD to the automatic detection of DBD system discharge parameters, assessment and to the adjust automatically of discharging condition
Reactor is operated in optimal discharge state., in addition, the present invention solves the output power of DBD reactors and energy is difficult to measure
The technical issues of, each power-up period energy of reactor can be directly surveyed, the energy of single power-up period can also be tired out
Add statistics, obtains the energy consumed in any time period, can apply in continuous discharge state, and can apply in discontinuous electric discharge
In state;Traditional running efficiency of system assessment is the energy using the energy and high voltage power supply input terminal of the output end of high voltage power supply
For the ratio of amount as energy conversion efficiency, the present invention can obtain the energy consumed on reactor, therefore more accurately obtain
By the energy conversion efficiency of reactor.
Description of the drawings
Fig. 1 is the system entire block diagram of the present invention;
Fig. 2 is the system connection location diagram of the present invention;
Fig. 3 is the discharge parameter acquisition schematic diagram of the present invention;
Fig. 4 is the supply voltage detection circuit of the present invention;
Fig. 5 is the current transformer of the present invention;
Fig. 6 is power density modulation power source typical case's supply waveform of the present invention;
Fig. 7 is the supply waveform under the source forcing of (a) High Level AC Voltage;(b) DBD typical case's Lie groupoid;
Fig. 8 is the detecting step flow chart of the present invention;
Fig. 9 is the parameter processing flow chart of the present invention;
Figure 10 is the discharge current process chart of the present invention;
Figure 11 is the power supply energy balane flow chart of the present invention;
Figure 12 is that the power-up period starting point of the present invention searches schematic diagram;
Figure 13 is the single power-up period separation process figure of the present invention;
Figure 14 is the equivalent parameters calculation flow chart of the present invention;
Figure 15 is the quantum yield Energy Efficiency Ratio calculation flow chart of the present invention;
Figure 16 is the newton hill-climbing algorithm schematic diagram of the present invention;
Figure 17 is that the programmable power supply of the present invention adjusts reactor supply voltage procedure chart;
Figure 18 is the PDM electric power output voltages duty ratio and frequency of supply control principle of the present invention;
Figure 19 is the Power Regulation period control principle of the present invention;
Figure 20 is the Power Regulation cycle control signal circuit diagram of the present invention;
Figure 21 is the frequency of supply Principles of Regulation figure of the present invention.
Specific implementation mode
Below according to attached drawing and technical scheme of the present invention is further elaborated in conjunction with the embodiments.
Fig. 1 is the system entire block diagram of the present invention, and Fig. 2 is the system connection location diagram of the present invention.A kind of PDM power drives
The parameter regulator control system and method for DBD air purifiers, including DBD reactors, programmable power supply, PDM high pressure activation electricity
Source, reactor power supply ENERGY ETDetection unit, relative spectral power detection unit, tested gas concentration detection unit, gas stream
Fast adjustment unit and data acquisition and regulation and control unit, wherein:
DBD reactors generate high energy particle and Strong oxdiative substance purification air for discharging;
Programmable power supply, is connected with PDM high pressure activation power supplys, the input electricity for setting PDM high pressure activation power supplys
Pressure, and then control PDM high pressure activation power supplys and be supplied to the supply voltage of reactor and the power of discharge system, discharge system to include
PDM high pressure activations power supply and DBD reactors;
PDM high pressure activation power supplys, are connected with DBD reactors, as the excitation power supply of DBD reactors, for adjusting electric discharge
Condition;
Reactor power supply ENERGY ETDetection unit is connected with DBD reactors, is used for the electric parameter of detecting system, will count
According to data acquisition and regulation and control unit is transferred to, the ENERGY E of PDM power inputs consumption is obtainedIN, reactor is obtained for electric flux
ET;
Relative spectral power detection unit is connected with DBD reactors, emits light for detecting active specy in region of discharge
The relative intensity of spectrum, and transfer data to data acquisition and regulation and control unit;
Tested gas concentration detection unit is to detect the sensor of air quality, is located at the gas outlet of DBD reactors, is used
In the purified air quality of detection, and transmit data to data acquisition and regulation and control unit;
Gas flow rate adjustment unit is located at the air inlet of DBD reactors, for receiving data acquisition and regulation and control unit
Signal adjusts gas flow rate;
Data acquire and regulate and control unit, for receiving reactor power supply ENERGY ETThe electric parameter number of detection unit transmission
Active specy relative spectral power signal according to the transmission of, relative spectral power detection unit and tested gas concentration detection unit
The air quality data of transmission handles data in real time, assesses the working condition of DBD reactors, to programmable power supply electricity
Source, PDM high pressure activations power supply and gas flow rate carry out real-time control.
Preferably, the condition of power supply of DBD reactors changes, PDM high pressures with the operating mode of PDM high pressure activation power supplys
The operating mode of excitation power supply by change power-on time, frequency of supply, in a Power Regulation period power-on time duty ratio into
Row is adjusted.In discharge process, relative spectral power, discharge current, supply voltage and integral voltage are carried out to DBD reactors
Detection, data collecting system record the data detected, then the calculating and processing of data are carried out by master system.Figure
3 acquire relational graph, reactor power supply ENERGY E for discharge parameterTDetection unit includes high voltage attenuator, current transformer, electricity
Pressure sensor and digital oscilloscope, high voltage attenuator are connected to the high-voltage output end of PDM high pressure activation power supplys, and it is anti-to measure DBD
Answer the supply voltage of device;Current transformer is connected on the ground wire in circuit, measures the discharge current for flowing through entire circuit;DBD is anti-
It includes the integrating capacitor of one end connection ground wire to answer the discharge loop of device, and the integral electricity in integrating capacitor is obtained by voltage sensor
Pressure.
Preferably, high voltage attenuator uses capacitance partial pressure method, supply voltage peak value to arrive 40kV 20, PDM high pressures are swashed
The high-voltage signal for encouraging power supply output is converted into the supply voltage acquisition channel interface that low voltage signal is input to oscillograph, VRHIt is
The high-voltage output end of PDM high pressure activation power supplys, i.e. DBD reactors high voltage supply end;CH1Indicate the supply voltage acquisition of oscillograph
Channel interface.C1 and C2 uses high-voltage capacitance, as shown in Figure 4.
Preferably, Fig. 5 is current transformer, and for detecting discharge current, bandwidth is 100Hz to 100kHz.In figure, VRL
It is the ground terminal that PDM high pressure activations power supply is connect with DBD reactors;CH2 indicates the discharge current acquisition channel interface of oscillograph.
Current transformer is the uniform close air core solenoid being wound on annular nonmagnetic skeleton, and output voltage is proportional to tested electric current,
The voltage signal that current transformer is sensed accesses the discharge current acquisition channel interface of digital oscilloscope.
Preferably, relative spectral power detection unit is fiber spectrometer, and electronics is occurred for active specy in discharge process
The optical signalling that energy level transition generates is converted into electric signal and acquires and regulate and control unit electric signal transmission to data, passes through data
Acquisition port transfers data to host computer.
Preferably, data acquisition is located at regulation and control unit in host computer, supply voltage, discharge current and the integral detected
Three electric parameters of voltage signal are acquired by digital oscilloscope, and host computer is transferred data to by oscillograph.
If Fig. 8 is detecting step main flow chart, the parameters of PDM power drives DBD air purifiers regulates and controls method, including with
Lower step:
(1) discharging condition of PDM high pressure activation power supplys, including supply voltage, frequency of supply, the frequency in Power Regulation period are set
Rate, in the Power Regulation period power-on time duty ratio;
(2) it in discharge process, detects in discharge current, supply voltage, integral voltage and the region of discharge of DBD reactors
The relative spectral power of active specy will carry out original in discharge current, supply voltage and integral voltage signal input oscillograph
Data acquire;
(3) utilize data transmission interface and interactive software that digital oscilloscope and spectrometer are connected with host computer respectively,
The initial data that acquisition is stored on host computer obtains related discharge parameter by being calculated and handled in host computer, and by result
Output display;
(4) it assesses to obtain corresponding discharging condition and gas flow rate in optimal discharge effect according to discharge effect, determines
Parameter area;
(5) host computer is according to opposite quantum yield Energy Efficiency Ratio EerDischarging condition or gas flow rate are adjusted in real time, make reaction
Device is operated in best opposite quantum yield Energy Efficiency Ratio EerIn neighbouring threshold range.
Preferably, it is preferable that if Fig. 9 is parameter processing flow chart, data calculate and processing step is followed successively by confession
Piezoelectric voltage processing, discharge current processing, power supply energy balane, equivalent parameters calculates and opposite quantum yield Energy Efficiency Ratio calculates,
Respectively obtain supply voltage peak-to-peak value, effectively electric discharge total time, average micro discharge intensity, in system operation time always for electric energy
Amount, single power-up period average energy, reactor equivalent capacity, opposite quantum yield Energy Efficiency Ratio.
Preferably, supply voltage is detected by high voltage attenuator using capacitance partial pressure method, and high voltage signal is turned
It changes low voltage signal into be acquired, formula is as follows:
Wherein, UC2For CH1Hold collected voltage, CH1Indicate the supply voltage acquisition channel interface of oscillograph, U is quilt
Survey VRHThe voltage at end, VRHThe High voltage output terminal voltage of PDM high pressure activation power supplys, i.e. DBD reactors high voltage supply terminal voltage,
C1And C2For the capacitance of high-voltage capacitance;According to the data for the supply voltage acquisition channel for acquiring and storing in real time in host computer, conversion
Output is shown for the peak-to-peak value of actual power voltage.
Preferably, Figure 10 is discharge current process chart, and it is strong that average micro discharge is calculated in discharge current process part
Degree and effectively electric discharge total time, the specific steps are:
101) discharge current is detected by current transformer;
102) discharge current waveform is reconstructed, obtained discharge current waveform is called in MATLAB
Sgolayfilt functions are smoothed using Savitzky-Golay smoothing algorithms;
Data=xlsread (' discharge current .xlsx');% reads in data
B=data (:,1);
Y=sgolayfilt (b, 3,7);% smoothing processings
plot(y,'r');
hold on
103) original discharge current waveform subtracts each other with the current waveform that smoothing processing is crossed, and obtain in discharge process micro- puts
The Wave data of electric current;
104) the electric discharge initial time of each power-up period is obtained according to the Wave data of micro discharge electric current and electric discharge ends
Time, electric discharge deadline and initial time subtraction calculations of discharging go out effective discharge time of single power-up period, i.e. current wave
Effective discharge time of all power-up periods is added up and is effectively discharged total time by the time that micro discharge occurs in shape;
105) the micro discharge peak value of pulse of each power-up period is obtained according to the Wave data of micro discharge electric current, calculates electric discharge
Average micro discharge intensity in the process, average micro discharge intensity is the sum of peak value of all micro discharge pulses divided by micro discharge pulse
Number;
106) to total time and the average micro discharge intensity output display of effectively discharging in discharge process.
Preferably, Fig. 6 is the typical supply waveform that power density modulates PDM high pressure activation power supplys, Tm,jIt is close for a power
Modulation period is spent, i.e. the Power Regulation period, PDM high pressure activation power supplys are modulated for the power density of a fixed frequency, are adjusting electricity
When the output power and voltage in source, Tm,jIt is fixed.Ton,jFor the discharge time in a Power Regulation period, by multiple single confessions
Electric period composition, in Tm,jWhen fixed, by changing Ton,jChange duration of power supply, you can change for electric flux.Therefore, right
PDM high pressure activation power supplys, putting in supply voltage, the frequency of single power-up period, a power-up period are modulated in power density
Electric number can be carried out adjusting.Since power density modulation PDM high pressure activation power supplys have electric discharge discontinuous, discharge frequency can
The features such as tune, power-up period number can be changed, needs one kind being directed to the lower medium of power density modulation PDM high pressure activation power supplys excitation
Computational methods of the barrier discharge DBD reactors for electric flux.The method designed herein can tire out single power-up period energy
Add calculating, the method for obtaining gross energy, the method can calculate discontinuous for electric flux and calculating under continuous duty
Under working condition for electric flux.
Fig. 7 shows the exemplary voltages current waveform of excitable media barrier discharge DBD reactors.Fig. 7 (a) is power-up period
Waveform (enlarged drawing of the power pack of Fig. 6).It is observed that the generation of micro discharge, corresponding diagram b in supply current waveform
AB the and CD periods of middle label, and there is displacement current in the period labeled as BC and DA.Fig. 7 (b) is excitable media resistance
The voltage charge lissajous figures for electric flux of gear electric discharge DBD reactors.
Figure 11 is power supply energy balane flow chart, and by powering, energy balane obtains single power-up period in system operation
Always for electric flux in average energy and system operation time, specially:
111) basis obtains supply voltage and integral voltage carries out the lissajous figures reconstruct of single power-up period, automatic to read
Take the data of " supply voltage " and " integral voltage " acquisition channel stored in host computer.According to obtained data, carry out single
The lissajous figures in period reconstruct.Since lissajous figures are the curves that two orthogonal vectors are synthesized when doing periodic swinging,
In the present solution, the vibration frequency of two vectors is identical, closed figure can be synthesized.But in vibration processes, vector
Mould is to be not fixed, therefore the feature size of each periods synthesizer can be variant.When being powered energy balane, need to each
The area of period lissajous figures is calculated, therefore to be carried out the reconstruct of figure and be detached to each period, and figure is established
The rule of shape separation;
112) lissajous figures of each reconstruct are powered with the integral and calculating of voltage and integral voltage, obtains Li Saru
The area S of figured,i, the ENERGY E of single power-up period is obtained in conjunction with formulad,i
Wherein um(t) refer to integral voltage, CmFor the capacitance of external integrating capacitor, Td,iIndicate the time of single power-up period,
U (t) is supply voltage, and i (t) is supply current, and subscript d, i indicate the number of power-up period;
One Power Regulation cycle Tm,jInterior power-up period number ndm,jFor
Wherein ndm,jIt is a Power Regulation cycle Tm,jInterior power-up period number, DjIt is a Power Regulation cycle Tm,jWhen middle power supply
Between duty ratio, subscript m, j indicate power density adjustment cycle times;
Wherein Ton,jIt is duration of power supply, total power-up period number N in run timeon,tFor
Non,tIt is total power-up period number, T in run timetIt is the operation total time of power supply system;
One Power Regulation cycle Tm,jAlways for electric flux be Power Regulation cycle Tm,jInterior single power-up period ENERGY Ed,iThe sum of, i.e.,
Em,jIt is Power Regulation cycle Tm,jAlways for electric flux, i.e. a Power Regulation cycle Tm,jThe gross energy of consumption;
The average power supply ENERGY E of single power-up periodd,aFor
The gross energy E of system consumption in run timeTFor
113) output shows ENERGY E of averagely poweringd,aWith the gross energy E of system consumption in run timeT。
Preferably, according to obtaining supply voltage and integral voltage carries out the lissajous figures of single power-up period and reconstructs, with
Integral voltage is abscissa data, supply voltage is that ordinate data carry out figure reconstruction, obtains what all power-up periods stacked
Lissajous figures carry out signal period image separation, and it is single lissajous figures to keep single power-up period corresponding, and Figure 13 is this
The single power-up period separation process figure of invention, single power-up period Wave data separation detailed process are as follows:
121) supply voltage, supply current, integral voltage data are read, the supply voltage maximum value in memory length is found out
The corresponding abscissa t of pointaAbscissa t corresponding with supply voltage minimum pointb, as shown in figure 12, PDM high pressure activation power supplys
In discharge waveform, supply voltage maximum value and minimum value are adjacent two extreme points, the corresponding cross of supply voltage maximum of points
Coordinate taAbscissa t corresponding with supply voltage minimum pointbBetween be divided into the time T of half of power-up periodd,i/2;
122) the corresponding abscissa t of selection supply voltage maximum of pointsaAbscissa t corresponding with supply voltage minimum pointb
Abscissa midpoint xi, from midpoint xiCorresponding coordinate starts, and abscissa successively decreases half of power-up period, after successively decreasing every time, after successively decreasing
Click-through line slope judge, if slope is more than setting thresholding, indicate the coordinate points in power supply process, continue to successively decrease until slope
Less than setting thresholding;If slope is less than setting thresholding, then it represents that the point is not in power supply process;
123) it is less than the point of setting thresholding for slope, is denoted as suspicious starting point p, setting thresholding is more than most for slope
The latter point, is denoted as q, and starting point is chosen using dichotomy in (p, q) range:
(a) p, the midpoint of q is taken to be denoted as m, alignment judges into line slope;
If (b) slope is less than setting thresholding, using the midpoint abscissa as the p of next range points, otherwise by the midpoint
Q point of the abscissa as next range;
(c) repeat (a) (b) until siding-to-siding block length be less than setting thresholding, if p, q siding-to-siding block length be less than setting thresholding, then this
When (p, q) midpoint be starting point, the abscissa of starting point is s;
124) since starting point, the abscissa of supply current is incremented by Td,i/ 2 length, to the click-through after being incremented by every time
Line slope judges, if slope is more than setting thresholding, abscissa continues to be incremented by until slope is less than setting thresholding;It is small for slope
In the point of setting thresholding, it is denoted as suspicious terminating point v, the last one point of setting thresholding is more than for slope, u is denoted as, at (u, v)
In range terminating point is chosen using dichotomy.
125) in the range of starting point is to terminating point, since starting point, each Td,iLength range is a power supply
Period respectively stores the coordinate of each point in each single power-up period, completes supply voltage, supply current, integral
The separation of voltage data.
Preferably, Figure 14 is equivalent parameters calculation flow chart, and the equivalent electricity of DBD reactors is calculated by equivalent parameters
Holding parameter, the lissajous figures that single power-up period is carried out according to supply voltage and integral voltage reconstruct, and the four of lissajous figures
A apex coordinate is respectively A (Ux1,Uy1)、B(Ux2,Uy2)、C(Ux3,Uy3)、D(Ux4,Uy4), the abscissa and ordinate on each vertex
Integral voltage and supply voltage on respectively corresponding time point obtain the equivalent capacity number of single power-up period by following formula
According to
Wherein C, CdAnd CgBe respectively single power-up period total equivalent capacity, medium equivalent capacity and discharging gap it is equivalent
Capacitance;
It is averaged to the rhythmic capacitance of institute, obtains equivalent capacity average value.
Preferably, Figure 15 is opposite quantum yield Energy Efficiency Ratio EerCalculation flow chart is strong according to collected relative spectral
Degrees of data and the Power Regulation period-power-supplying ENERGY E being calculatedm,j, opposite quantum yield efficiency is calculated by following formula
Than
Preferably, discharge effect assessment is to utilize climbing hill algorithm, with the discharging condition or gas stream in a Power Regulation period
Speed is horizontal axis, PDM power supply conversion efficiencies or opposite quantum yield Energy Efficiency Ratio EerFor the longitudinal axis, pass through the electric discharge of constantly regulate system
Condition or gas flow rate compare the opposite quantum yield Energy Efficiency Ratio E of the front and back DBD reactors of adjustmenterSituation of change, then root
Reactor is set to be operated in best opposite quantum yield Energy Efficiency Ratio E to adjust discharging condition or gas flow rate according to situation of changeerIt is attached
In close threshold range.
It is the schematic diagram of climbing hill algorithm as shown in figure 16, horizontal axis indicates discharging condition or gas flow rate, including power supply frequency
Rate, supply voltage, power density, gas flow rate.The longitudinal axis indicates the energy conversion efficiency E of PDM power supplysT/EINOr opposite light quantum
Yield Eer.Climbing hill algorithm is also known as perturbation observation method, compares adjustment by the discharging condition of constantly regulate exoelectrical reaction system
The E of front and back DBD reactorserSituation of change, adjust discharging condition further according to situation of change, including programmable power supply
Output voltage, the supply voltage of PDM high pressure activation power supplys, frequency of supply, the parameter for electric flux, make discharge reactor be operated in
Best EerNear.It is as follows that climbing hill algorithm specific works situation can be analyzed according to Figure 16:
(1) add a disturbance variable in A points, such as change for electric flux, make the E of reactorerReach B points;
(2) improved before detecting makes the opposite quantum yield Energy Efficiency Ratio of reactor increase for electric flux, continues former
The direction come increases disturbance variable, and reactor is made to be operated in C points;
(3) continue original direction and add disturbance variable, reactor is made to be operated in M points;
(4) continue original direction and add disturbance variable, reactor is made to be operated in D points;
(5) disturbance variable before detecting at this time makes the opposite quantum yield Energy Efficiency Ratio of reactor reduce, and changes
Direction originally adds disturbance variable, makes the E of reactorerAgain reach M points;
(6) continue original direction and add disturbance variable, reactor is made to be operated in C points;
(7) finally, the operating condition of reactor is in C points, M points, and D points fluctuate between three operating points.
Disturbance variable in algorithm can use gas flow rate, supply voltage, Power Regulation period for electric flux.Using this
Method can determine best opposite quantum yield Energy Efficiency Ratio, and can obtain corresponding discharging condition, therefore can be with
Determine optimal discharge parameter regulation range.
In newton hill-climbing algorithm, M points determined by the step-length according to disturbance variable are not necessarily EerPeak, true
After having determined optimal parameter adjustable range C to D, the step-length of disturbance variable is reset with optimum seeking method, according to the following steps
Find out peak:
(1) in the section (C, the M) midpoints Nei Qu P1, the section (M, the D) midpoints Nei Qu P2;
(2) when the corresponding functional values of P1 functional value corresponding more than P2, the maximum of opposite quantum yield Energy Efficiency Ratio
In the section (P1, M), the section of (M, P2) is cast out;
(3) conversely, maximum is in the section (M, P2), cast out the section (P1, M);
(4) when the corresponding functional values of P1 and P2 are equal, maximum in (P1, P2) range, cast out (C, P1) and (P2,
D section);
(5) midpoint is taken again in remaining section, find P3, P4, continue to change in a manner of step (1) to (4)
In generation, calculates;Until remaining interval range is less than setting valueWhen, algorithm terminates.
When independent variable is gas flow rate,Value be 0.1m/s;When independent variable is supply voltage,Value be 0.1kV;
When independent variable is the energy in a Power Regulation period,It is 10mJ.
According to the newton hill-climbing algorithm of Figure 16, independent variable is set as frequency of supply first, dependent variable is PDM high pressure activation electricity
The energy conversion efficiency in source determines PDM high pressure activations power supply and the matched resonance center of DBD reactors according to newton hill-climbing algorithm
Frequency.The energy conversion efficiency of PDM power supplys is defined as ET/EIN, wherein EINIt is that programmable power supply is supplied to PDM power inputs
Energy, ETBe PDM power supplys be supplied to DBD reactors for electric flux.Change the power supply that PDM power supplys are supplied to DBD reactors
Frequency finds out best PDM power supply conversion efficiencies range, determines resonance center frequeH f0.By frequency of supply control in resonance
Within the scope of frequency of heart, other discharging conditions are all regulated and controled in the case of the determination of resonance center frequeH.
Change with the change for electric flux with respect to quantum yield Energy Efficiency Ratio, for electric flux and supply voltage and power supply
Number of cycles is related.The supply voltage amplitude of power density modulation PDM high pressure activation power supplys output is by changing power density
What the output voltage of the input voltage (i.e. programmable power supply) of modulation PDM high pressure activation power supplys obtained, power density modulation
The power-up period number of PDM high pressure activation power supplys output determines the power density of power supply.In the present invention, the maximum of supply voltage
Adjustable extent is 10 to 30kV.When a Power Regulation cycle Tm,jThe duty ratio D of middle power-on timejWhen being 1, a Power Regulation period
In power-up period number be N=Tm,j/Td,i, therefore adjustable power-up period number ranging from 1 arrives N.In supply voltage and
In power-up period number adjustable range, after obtaining best opposite quantum yield Energy Efficiency Ratio, it may be determined that supply voltage and work(
The best adjustable range of rate density.
In gas treating process, the active specy that the electric discharge of DBD reactors generates has strong oxidizing property, is that degradation is toxic
The most important substance of gas.It is closely related by total gas flow rate of DBD reactors and the yield of active specy.In the present apparatus
Obtain the E of active specyerWith the situation of change of gas flow rate, obtain that best E can be generatederGas flow rate.When flow velocity is super
When going out optimum range, master system generates corresponding actions, and auto-control valve changes gas flow rate.In this course, gas
Body flow velocity signal is real-time transmitted in master system, and whether master system judges this moment in best EerWithin the scope of, if not
Meet, then corresponding actions are generated to valve, adjusts flow velocity until reactor is operated in optimum condition.
For dielectric barrier discharge, the charged particle, photon, shock wave and the neutral particle that generate in region of discharge it
Between mutually collide, occur excitation, dissociation, decompose etc. reactions, generate active specy (such as ultraviolet light (UV), hydroxyl radical free radical
(OH), oxygen atom free radical (O), ozone (O3), hydrogen peroxide (H2O2) etc.).Electron collision is that active specy is most important next
Source when only electron energy is higher than the Chemical bond energy of molecule, can generate work when electron and molecule collides to molecule
With.Therefore the premise that active specy generates is generation high energy electron, so in the interaction process of electronics and substance, if
The electron beam of higher energy and density can be obtained, then can obtain better discharge effect.
Preferably, it is the supply voltage peak value for changing PDM high voltage power supplies and being supplied to DBD reactors to change discharging condition, is situated between
In matter barrier discharge DBD reactors, the electric field strength between two electrodes is bigger, and the electron energy generated between electrode is bigger.
And since the distance between electrode is fixed, so the electric field strength between electrode is by loading the supply voltage at reactor both ends
It adjusts.Change the supply voltage of reactor, the electron energy in region of discharge changes, and leads to the change of reaction rate, also
It will produce different reaction products.
Think that the higher the better for supply voltage on reactor in traditional sense, but if overtension, one side high pressure swashs
The technology for encouraging power supply is difficult to realize detect, and on the other hand to the detection of voltage signal, there is also difficulties.Therefore in the present system, when
After programmable power supply and power density modulation PDM high pressure activation power supplys are started to work, master system by I2C interface or
SPI interface is connected with programmable power supply, and the output voltage of programmable power supply is adjusted from original state, changes power
The supply voltage of density modulation PDM high pressure activation power supplys, the process that programmable power supply adjusts supply voltage are as shown in figure 17.It can compile
Input voltage of the output voltage of journey power supply as PDM high pressure activation power supplys first passes through DC/DC transformation, obtains what amplitude can be changed
High-voltage dc voltage, high-voltage dc voltage obtain alternating voltage by full bridge inverter, using step-up transformer, obtain institute
The output voltage needed.The output end that reactor is connected on to PDM high pressure activation power supplys discharges.It can be seen by above procedure
Go out, the output voltage for changing programmable power supply by master system is the power supply of changeable dielectric barrier discharge DBD reactors
Voltage.
With the variation of supply voltage, master system according to the data detected to being calculated for electric flux, in conjunction with
Spectral intensity assesses quantum yield Energy Efficiency Ratio.It is looked for during adjusting supply voltage using newton hill-climbing algorithm
To best EerCorresponding power supply voltage range monitors supply voltage in real time in system operation, passes through programmable power supply
The real-time monitoring of power supply changes the supply voltage that PDM high pressure activation power supplys are supplied to DBD reactors, is allowed to be maintained at best model
In enclosing.The most common situation is that best supply voltage corresponds to the output area of a programmable power supply when most starting to work, with
The progress of electric discharge, the phase has been insufficient to allow the sufficiently large of PDM power supplys offer to the programmable power supply output voltage of setting after discharge
Supply voltage, need the output voltage of programmable power supply being turned up at this time, by supply voltage control in optimum range.
In the case where supply voltage is constant, the electron energy of Single Electron is certain, if wanting to promote electric discharge effect at this time
Fruit can start in terms of changing the concentration for generating active specy of discharging.By changing the electron concentration in discharge reactor, can change
Become the concentration of active constituent.Due to(Q indicates that the quantity of electric charge, i indicate electric current), the raising of electron concentration is macroscopically showing
Electric current to flow through system increases, therefore adjusts electron concentration and namely change discharge current.In the situation that supply voltage is constant
Lower change electric current, that is, change reactor for electric flux.In PDM high pressure activation power supplys, by improving Ton,jChange work(
Rate density adjusts the duty ratio D of power-on time in the Power Regulation periodj, to change for electric flux.By above procedure, improve
Electron concentration in reactor, improves the concentration of active specy, that is, improves the reaction rate of air purification processing.
It is PDM high pressure activation electric power output voltage duty ratios and frequency of supply control principle as shown in figure 18.Pass through control
The on off state of switching tube in full bridge inverter achievees the purpose that change output waveform duty ratio and frequency.The Power Regulation period is controlled
Waveform processed controls waveform respectively by the ports V01 and V02 of AND gate circuit with power-up period, passes through full bridge driving circuit D0It obtains
The control waveform for output waveform of powering controls the state of the switching tube in inverter circuit.IRF series can be selected in full-bridge driving chip
Chip, such as IRF2184, IRF2186.Two groups of Q1, Q4 and Q2, Q3 switching tube alternate conductions.By the voltage warp of inverter circuit output
High frequency pulse booster is crossed, the primary of transformer is Lp, and secondary is Ls, and transformer secondary output output is exactly PDM high pressure activation power supplys
Output.PDM high pressure activation power supplys export the duty ratio of supply waveform by the duty ratio of high level in Power Regulation period control waveform
Control.The duty ratio that high level in waveform is controlled by change, can adjust the number of power-up period in the supply waveform of output,
Change for electric flux.
Such as Figure 19, the duty ratio of power-on time can be adjusted by following procedure in the Power Regulation period:By triangular wave with can straighten
Galvanic electricity presses VadjBy voltage comparator, when the level of triangular wave is higher than Vadj, comparator exports high level, when the level of triangular wave
Less than Vadj, comparator exports low level, the control waveform of the output waveform of comparator as the Power Regulation period.So passing through change
VadjSize, the duty ratio of power-up period in the Power Regulation period can be controlled, to change for electric flux.
If Figure 20 is the circuit diagram for generating Power Regulation cycle control signal.Schmidt trigger G1Production for impulse waveform
It is raw, VDACDirect current biasing as Schmidt trigger, thus it is possible to vary capacitance CtThe charge and discharge time, to change Schmidt touch
Send out the square wave frequency that device generates.
Above formula indicates the input/output relation of Schmidt trigger, ViIndicate the input voltage of Schmidt trigger, VDACIt is
The direct current biasing of Schmidt trigger, VoIt is output voltage, t is capacitance CtCharging time.
The impulse waveform that Schmidt trigger generates is passed through into d type flip flop D1It is 50% to generate a stable duty ratio
Square wave.Square-wave signal is generated into triangular signal, the variable DC voltage V with generation by triangle wave generating circuit againadjPass through
Voltage comparator, output Power Regulation period control waveform.So by master system change circuit in MCU special pins it is defeated
Go out signal, changes VadjVoltage, thus it is possible to vary the duty ratio of Power Regulation cycle control signal, so that it may with reach change reactor supply
The purpose of electric flux.
Master system is connected by USB, I2C or SPI interface with PDM high pressure activation power supplys, with the change of condition of power supply
Change, master system according to the data detected to being calculated for electric flux, in conjunction with spectral intensity to quantum yield efficiency
Than being assessed.Best E is found during adjusting for electric flux using newton hill-climbing algorithmerCorresponding power-up period accounts for
Sky compares range.Power-up period is monitored in real time in system operation, the frequency of supply of PDM high pressure activation power supplys is adjusted
Control changes a Power Regulation cycle T by adjusting Power Regulation cycle control signalm,jMiddle power-up period Ton,jDuty ratio Dj, make reaction
Device is maintained at for electric flux within the scope of best effort.
Preferably, it is to change supply voltage frequency to change discharging condition, that is, changes strength of discharge, PDM high pressure activation power supplys
With DBD reactor groups at series resonant tank, power-up period T is adjustedd,i, system is made to be operated in resonance match point, i.e. PDM high pressures
The frequency of supply of excitation power supply is identical as the resonant frequency of system.
PDM high pressure activations power supply and DBD reactor groups are at series resonant tank.Assuming that the resonance electricity in high pressure activation power supply
Inductance value is L, and the equivalent capacitance value of DBD reactors is C, and the impedance Z in circuit is:
Wherein R is the resistance value in circuit, and ω L are the induction reactance in power supply,For the capacitive reactance of reactor.When meeting following item
When part, circuit is presented purely, reaches series resonance.
Due to
ω0=2 π f0
Resonant frequency f0It is expressed as:
In dielectric barrier discharge, with the progress of discharge process, the equivalent capacity of reactor can change.Due to holding
Property reactor and perception excitation power supply between there are matching relationships, when the equivalent capacity of reactor changes, DBD is anti-
Device and the matching properties of PDM high pressure activation power supplys is answered to decline.Input voltage in PDM high pressure activation power supplys is identical,
The high pressure activation voltage peak that PDM high pressure activation power supplys generate can reduce, i.e., the supply voltage being injected into originally on reactor subtracts
It is small, and only when the resonant frequency of the frequency of supply of power supply and electrode is closer, discharge effect is just better.Master system at this time
The frequency of supply for just needing adjusting PDM high pressure activation power supplys, to improve the supply voltage of dielectric barrier discharge DBD reactors,
The strength of discharge for improving reactor, makes system be operated in best EerIn range.
When reactor equivalent capacity C changes, the natural resonance frequency f of system0It changes, needs to adjust electricity at this time
The frequency of supply in source, when the frequency of supply of PDM high pressure activation power supplys is identical as the resonant frequency of system, supply voltage is maximum,
For electric flux maximum.And in the present system, the change of frequency of supply can directly pass through Td,iVariation observation, therefore, when C send out
When raw change, change Td,iThe matching effect that power supply and reactor can be changed, to change discharge condition.According to Figure 16 institutes
The newton hill-climbing algorithm shown, abscissa are frequency of supply, and ordinate is the transfer efficiency E of PDM power supplysT/EIN, adjust power supply frequency
Rate finds best PDM power supply conversion efficiencies range according to newton hill-climbing algorithm, determines resonance center frequeH f0.All puts
In electrical parameter, the resonance center frequeH f of PDM power supplys is determined at first0, other discharging conditions are all in the determination of resonance center frequeH
In the case of regulated and controled.
In PDM high pressure activation power supplys, control signal principle figure such as Figure 21 of power-up period, in circuit operation principle and Figure 20
It is described identical, by changing VDAC1Adjust the frequency of power-up period control signal.So changing VDAC1, power-up period control signal
Frequency change, so that it may with adjust PDM high pressure activation power supplys output supply voltage in Td,i, reach for changing circuit
With state, change the purpose of discharge effect.In system work process, master system is according to the data quantum yield detected
Energy Efficiency Ratio EerIt is assessed.To the power-up period T of reactord,iIt is adjusted, system is made to be operated in resonance match point.
Claims (18)
1. a kind of parameter regulator control system of PDM power drives DBD air purifiers, which is characterized in that including DBD reactors, can
Program power supply, PDM high pressure activations power supply, reactor power supply ENERGY ETDetection unit, relative spectral power detection unit, quilt
Gas concentration detection unit, gas flow rate adjustment unit and data acquisition and regulation and control unit are surveyed, wherein:
DBD reactors generate high energy particle and Strong oxdiative substance purification air for discharging;
Programmable power supply, is connected with PDM high pressure activation power supplys, the input voltage for setting PDM high pressure activation power supplys, into
And it includes PDM high to control PDM high pressure activation power supplys to be supplied to the supply voltage of reactor and the power of discharge system, discharge system
Press excitation power supply and DBD reactors;
PDM high pressure activation power supplys, are connected with DBD reactors, as the excitation power supply of DBD reactors, for adjusting discharging condition;
Reactor power supply ENERGY ETDetection unit is connected with DBD reactors, the electric parameter of detecting system is used for, by data transmission
It is acquired to data and regulates and controls unit, obtain reactor power supply ENERGY ET;
Relative spectral power detection unit is connected with DBD reactors, for detecting active specy emission spectrum in region of discharge
Relative intensity, and transfer data to data acquisition and regulation and control unit;
Tested gas concentration detection unit is to detect the sensor of air quality, is located at the gas outlet of DBD reactors, for examining
Purified air quality is surveyed, and transmits data to data acquisition and regulation and control unit;
Gas flow rate adjustment unit is located at the air inlet of DBD reactors, the signal for receiving data acquisition and regulation and control unit
Adjust gas flow rate;
Data acquire and regulate and control unit, for receiving reactor power supply ENERGY ETIt is the electric parameter data of detection unit transmission, opposite
What the active specy relative spectral power signal of spectral intensity detection unit transmission and tested gas concentration detection unit were transmitted
Air quality data handles data in real time, assesses the working condition of DBD reactors, to programmable power supply, PDM
High pressure activation power supply and gas flow rate carry out real-time control.
2. the parameter regulator control system of PDM power drives DBD air purifiers according to claim 1, which is characterized in that anti-
Answer device power supply ENERGY ETDetection unit includes high voltage attenuator, current transformer, voltage sensor and digital oscilloscope, high electricity
Pressure attenuator is connected to the high-voltage output end of PDM high pressure activation power supplys, measures the supply voltage of DBD reactors;Current transformer
It is connected on the ground wire in circuit, measures the discharge current for flowing through entire circuit;Include that one end connects in the discharge loop of DBD reactors
The integrating capacitor of ground wire obtains the integral voltage in integrating capacitor by voltage sensor.
3. the parameter regulator control system of PDM power drives DBD air purifiers according to claim 2, which is characterized in that high
Voltage attenuator uses capacitance partial pressure method, and the high-voltage signal that PDM high pressure activation power supplys export is converted into low voltage signal input
To the supply voltage acquisition channel interface of digital oscilloscope.
4. the parameter regulator control system of PDM power drives DBD air purifiers according to claim 2, which is characterized in that electricity
Current transformer is the uniform close air core solenoid being wound on annular nonmagnetic skeleton, and output voltage is proportional to tested electric current, will
The discharge current acquisition channel interface for the voltage signal access digital oscilloscope that current transformer senses.
5. the parameter regulator control system of PDM power drives DBD air purifiers according to claim 1, which is characterized in that phase
It is fiber spectrometer to spectral intensity detection unit, the optics that transition of electronic energy generates is occurred into for active specy in discharge process
Signal is converted into electric signal and acquires and regulate and control unit electric signal transmission to data, is transferred data to by data acquisition port
Host computer.
6. the parameter regulator control system of PDM power drives DBD air purifiers according to claim 1, which is characterized in that number
It is located in host computer according to acquisition and regulation and control unit, supply voltage, discharge current and the integral voltage signal three detected is electrical
Parameter is acquired by digital oscilloscope, and host computer is transferred data to by digital oscilloscope.
7. a kind of parameter of PDM power drives DBD air purifiers regulates and controls method, which is characterized in that include the following steps:
(1) discharging condition of PDM high pressure activation power supplys, including supply voltage, frequency of supply, the frequency in Power Regulation period, tune are set
The duty ratio of power-on time in the work(period;
(2) in discharge process, activity in discharge current, supply voltage, integral voltage and the region of discharge of DBD reactors is detected
The relative spectral power of species will carry out former in discharge current, supply voltage and integral voltage signal transmission to digital oscilloscope
Beginning data acquire;
(3) utilize data transmission interface and interactive software that digital oscilloscope and fiber spectrometer are connected with host computer respectively,
The initial data that acquisition is stored on host computer obtains related discharge parameter by being calculated and handled in host computer, and by result
Output display;
(4) it assesses to obtain corresponding discharging condition and gas flow rate in optimal discharge effect according to discharge effect, determines parameter
Range;
(5) host computer is according to opposite quantum yield Energy Efficiency Ratio EerDischarging condition or gas flow rate are adjusted in real time, make reactor work
Make in best opposite quantum yield Energy Efficiency Ratio EerIn neighbouring threshold range.
8. the parameter of PDM power drives DBD air purifiers according to claim 7 regulates and controls method, which is characterized in that step
Suddenly in (3) to data carry out calculate and processing step be followed successively by supply voltage processing, discharge current processing, power supply energy balane,
Equivalent parameters calculates and opposite quantum yield Energy Efficiency Ratio calculates, when respectively obtaining supply voltage peak-to-peak value, effectively discharging total
Between, in average micro discharge intensity, system operation time always for electric flux, single power-up period average energy, the equivalent electricity of reactor
Hold, opposite quantum yield Energy Efficiency Ratio.
9. the parameter of PDM power drives DBD air purifiers according to claim 8 regulates and controls method, which is characterized in that supply
Piezoelectric voltage is detected by high voltage attenuator using capacitance partial pressure method, and high voltage signal, which is converted into low voltage signal, to carry out
Acquisition, formula are as follows:
Wherein, UC2For CH1Hold collected voltage, CH1Indicate the supply voltage acquisition channel interface of digital oscilloscope, U is tested
VRHThe voltage at end, VRHThe High voltage output terminal voltage of PDM high pressure activation power supplys, i.e. DBD reactors high voltage supply terminal voltage, C1
And C2For the capacitance of high-voltage capacitance;According to the data for the supply voltage acquisition channel for acquiring and storing in real time in host computer, conversion
Output is shown for the peak-to-peak value of actual power voltage.
10. the parameter of PDM power drives DBD air purifiers according to claim 8 regulates and controls method, which is characterized in that
Average micro discharge intensity and effectively electric discharge total time is calculated in discharge current process part, the specific steps are:
101) discharge current is detected by current transformer;
102) discharge current waveform is reconstructed, obtained discharge current waveform is called into sgolayfilt letters in MATLAB
Number, is smoothed using Savitzky-Golay smoothing algorithms;
103) original discharge current waveform subtracts each other with the current waveform that smoothing processing is crossed, and obtains the micro discharge electricity in discharge process
The Wave data of stream;
104) electric discharge initial time and the electric discharge deadline of each power-up period are obtained according to the Wave data of micro discharge electric current,
Electric discharge deadline and initial time subtraction calculations of discharging go out effective discharge time of single power-up period, i.e., are sent out on current waveform
Effective discharge time of all power-up periods is added up and is effectively discharged total time by the time of raw micro discharge;
105) the micro discharge peak value of pulse of each power-up period is obtained according to the Wave data of micro discharge electric current, calculates discharge process
In average micro discharge intensity, average micro discharge intensity is of the sum of peak value of all micro discharge pulses divided by micro discharge pulse
Number;
106) to total time and the average micro discharge intensity output display of effectively discharging in discharge process.
11. the parameter of PDM power drives DBD air purifiers according to claim 8 regulates and controls method, which is characterized in that
It is obtained in system operation in single power-up period average energy and system operation time always for electric flux by energy balane of powering,
Specially:
111) basis obtains supply voltage and integral voltage carries out the lissajous figures reconstruct of single power-up period;
112) lissajous figures of each reconstruct are powered with the integral and calculating of voltage and integral voltage, obtains lissajous figures
Area Sd,i, the ENERGY E of single power-up period is obtained in conjunction with formulad,i
Wherein um(t) refer to integral voltage, CmFor the capacitance of external integrating capacitor, Td,iIndicate the time of single power-up period, u (t)
For supply voltage, i (t) is supply current, and subscript d, i indicate the number of power-up period;
One Power Regulation cycle Tm,jInterior power-up period number ndm,jFor
Wherein ndm,jIt is a Power Regulation cycle Tm,jInterior power-up period number, DjIt is a Power Regulation cycle Tm,jMiddle power-on time
Duty ratio, subscript m, j indicate the cycle times of power density adjustment;
Wherein Ton,jIt is duration of power supply, total power-up period number N in run timeon,tFor
Non,tIt is total power-up period number, T in run timetIt is the operation total time of power supply system;
One Power Regulation cycle Tm,jAlways for electric flux be Power Regulation cycle Tm,jInterior single power-up period ENERGY Ed,iThe sum of, i.e.,
Em,jIt is Power Regulation cycle Tm,jAlways for electric flux, i.e. a Power Regulation cycle Tm,jThe gross energy of consumption;
The average power supply ENERGY E of single power-up periodd,aFor
The gross energy E of system consumption in run timeTFor
113) output shows ENERGY E of averagely poweringd,aWith the gross energy E of system consumption in run timeT。
12. the parameter of PDM power drives DBD air purifiers according to claim 11 regulates and controls method, which is characterized in that
According to supply voltage is obtained and integral voltage carries out the lissajous figures reconstruct of single power-up period, using integral voltage as abscissa
Data, supply voltage are that ordinate data carry out figure reconstruction, obtain the lissajous figures that all power-up periods stack, and are carried out single
A cycle graph separation, it is single lissajous figures to keep single power-up period corresponding, single power-up period Wave data separation
Detailed process is as follows:
121) supply voltage, supply current, integral voltage data are read, the supply voltage maximum of points pair in memory length is found out
The abscissa t answeredaAbscissa t corresponding with supply voltage minimum pointb, in the discharge waveform of PDM high pressure activation power supplys, power supply
Voltage max and minimum value are adjacent two extreme points, the corresponding abscissa t of supply voltage maximum of pointsaAnd supply voltage
The corresponding abscissa t of minimum pointbBetween be divided into the time T of half of power-up periodd,i/2;
122) the corresponding abscissa t of selection supply voltage maximum of pointsaAbscissa t corresponding with supply voltage minimum pointbHorizontal seat
Mark midpoint xi, from midpoint xiCorresponding coordinate starts, and abscissa successively decreases half of power-up period, after successively decreasing every time, to the point after successively decreasing
Judge into line slope, if slope is more than setting thresholding, indicate the coordinate points in power supply process, continues to successively decrease until slope is less than
Set thresholding;If slope is less than setting thresholding, then it represents that the point is not in power supply process;
123) it is less than the point of setting thresholding for slope, is denoted as suspicious starting point p, last of setting thresholding is more than for slope
It is a, it is denoted as q, starting point is chosen using dichotomy in (p, q) range:
(a) p, the midpoint of q is taken to be denoted as m, alignment judges into line slope;
If (b) slope is less than setting thresholding, using the midpoint abscissa as the p of next range points, otherwise by the horizontal seat in the midpoint
It is denoted as the q points for next range;
(c) repeat (a) (b) until siding-to-siding block length be less than setting thresholding, if p, q siding-to-siding block length be less than setting thresholding, then at this time (p,
Q) midpoint is starting point, and the abscissa of starting point is s;
124) since starting point, the abscissa of supply current is incremented by Td,i/ 2 length carries out the point after being incremented by every time oblique
Rate judges, if slope is more than setting thresholding, abscissa continues to be incremented by until slope is less than setting thresholding;Slope is less than and is set
The point for determining thresholding is denoted as suspicious terminating point v, the last one point of setting thresholding is more than for slope, u is denoted as, in (u, v) range
It is interior to choose terminating point using dichotomy;
125) in the range of starting point is to terminating point, since starting point, each Td,iLength range is a power supply week
Phase respectively stores the coordinate of each point in each single power-up period, completes supply voltage, supply current, integral electricity
Press the separation of data.
13. the parameter of PDM power drives DBD air purifiers according to claim 8 regulates and controls method, which is characterized in that
The equivalent capacity parameter of dielectric barrier discharge DBD reactors is calculated by equivalent parameters, according to supply voltage and integral electricity
Pressure carries out the lissajous figures reconstruct of single power-up period, and four apex coordinates of lissajous figures are respectively A (Ux1,Uy1)、B
(Ux2,Uy2)、C(Ux3,Uy3)、D(Ux4,Uy4), the abscissa and ordinate on each vertex are respectively the integral electricity on corresponding time point
Pressure and supply voltage, the equivalent capacity data of single power-up period are obtained by following formula
Wherein C, CdAnd CgIt is the total equivalent capacity, medium equivalent capacity and discharging gap equivalent capacity of single power-up period respectively;
It is averaged to the rhythmic capacitance of institute, obtains equivalent capacity average value.
14. the parameter of PDM power drives DBD air purifiers according to claim 8 regulates and controls method, which is characterized in that
According to collected relative spectral power data and the Power Regulation period-power-supplying ENERGY E being calculatedm,j, calculated by following formula
Obtain opposite quantum yield Energy Efficiency Ratio.
15. the parameter of PDM power drives DBD air purifiers according to claim 7 regulates and controls method, which is characterized in that
Discharge effect assessment is to utilize climbing hill algorithm, using the discharging condition in Power Regulation period or gas flow rate as horizontal axis, PDM power supplys
Transfer efficiency or opposite quantum yield Energy Efficiency Ratio EerFor the longitudinal axis, by the discharging condition or gas flow rate of constantly regulate system come
Compare opposite quantum yield Energy Efficiency Ratio E in the front and back dielectric barrier discharge DBD reactors of adjustmenterSituation of change, further according to change
Change situation makes reactor be operated in best opposite quantum yield Energy Efficiency Ratio E to adjust discharging condition or gas flow rateerNeighbouring
In threshold range.
16. the parameter of PDM power drives DBD air purifiers according to claim 15 regulates and controls method, which is characterized in that
It is the supply voltage peak value for changing PDM high voltage power supplies and being supplied to DBD reactors to change discharging condition, and specially master system can
It programs power supply to be connected, the output voltage of programmable power supply is adjusted from original state, the output electricity of programmable power supply
The input voltage as PDM high pressure activation power supplys is pressed, DC/DC transformation is first passed through, obtains the variable high-voltage dc voltage of amplitude, it is high
Pressure DC voltage obtains alternating voltage by full bridge inverter, using step-up transformer, obtains required output voltage;
Master system uses newton hill-climbing algorithm, during adjusting supply voltage, finds best opposite quantum yield efficiency
Compare EerCorresponding power supply voltage range, by being carried to the real-time monitoring that may be programmed power supply to change PDM high pressure activation power supplys
The supply voltage for supplying DBD reactors makes opposite quantum yield Energy Efficiency Ratio EerIt is maintained in optimum range.
17. the parameter of PDM power drives DBD air purifiers according to claim 15 regulates and controls method, which is characterized in that
The duty ratio for adjusting power-on time in a Power Regulation period, changes power density, changes PDM power supplys and is supplied to DBD reactors
Power-up period number.
18. the parameter of the PDM power drives DBD air purifiers described in 15 is wanted to regulate and control method according to right, which is characterized in that change
Become discharging condition to change supply voltage frequency, PDM high pressure activations power supply and DBD reactor groups into series resonant tank, adjusts
Power-up period Td,i, as change frequency of supply, system made to be operated in resonance match point, i.e. the power supply frequency of PDM high pressure activations power supply
Rate is identical as the resonant frequency of system.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111459070A (en) * | 2020-04-15 | 2020-07-28 | 深圳市英维克健康环境科技有限公司 | Control system, method, device and medium of DBD plasma reactor |
CN111627300A (en) * | 2020-05-21 | 2020-09-04 | 河海大学常州校区 | Lisa looks like presentation device of picture formation principle |
CN112667020A (en) * | 2020-12-11 | 2021-04-16 | 珠海格力电器股份有限公司 | Output power control method and device of air sterilizer and air sterilizer |
CN114857733A (en) * | 2022-04-29 | 2022-08-05 | 广州市微生物研究所有限公司 | Air purifier plasma concentration control method and control circuit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101642666A (en) * | 2009-09-04 | 2010-02-10 | 西安交通大学 | Device for purifying formaldehyde in indoor air |
CN103235244A (en) * | 2013-04-02 | 2013-08-07 | 广东工业大学 | Device and method for detecting dielectric barrier discharging circuit parameters |
US20160184774A1 (en) * | 2010-06-23 | 2016-06-30 | Baoquan Zhang | Flue-Gas Purification and Reclamation System and Method Thereof |
CN106422691A (en) * | 2016-08-25 | 2017-02-22 | 北京航天环境工程有限公司 | High-frequency power supply circuit used in organic exhaust gas plasma processing device |
CN106861383A (en) * | 2017-05-02 | 2017-06-20 | 哈尔滨工业大学 | Energy-saving VOCs processing units based on multistage dielectric barrier discharge |
-
2018
- 2018-01-19 CN CN201810055732.9A patent/CN108302733B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101642666A (en) * | 2009-09-04 | 2010-02-10 | 西安交通大学 | Device for purifying formaldehyde in indoor air |
US20160184774A1 (en) * | 2010-06-23 | 2016-06-30 | Baoquan Zhang | Flue-Gas Purification and Reclamation System and Method Thereof |
CN103235244A (en) * | 2013-04-02 | 2013-08-07 | 广东工业大学 | Device and method for detecting dielectric barrier discharging circuit parameters |
CN106422691A (en) * | 2016-08-25 | 2017-02-22 | 北京航天环境工程有限公司 | High-frequency power supply circuit used in organic exhaust gas plasma processing device |
CN106861383A (en) * | 2017-05-02 | 2017-06-20 | 哈尔滨工业大学 | Energy-saving VOCs processing units based on multistage dielectric barrier discharge |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111459070A (en) * | 2020-04-15 | 2020-07-28 | 深圳市英维克健康环境科技有限公司 | Control system, method, device and medium of DBD plasma reactor |
CN111627300A (en) * | 2020-05-21 | 2020-09-04 | 河海大学常州校区 | Lisa looks like presentation device of picture formation principle |
CN112667020A (en) * | 2020-12-11 | 2021-04-16 | 珠海格力电器股份有限公司 | Output power control method and device of air sterilizer and air sterilizer |
CN112667020B (en) * | 2020-12-11 | 2022-04-08 | 珠海格力电器股份有限公司 | Output power control method and device of air sterilizer and air sterilizer |
CN114857733A (en) * | 2022-04-29 | 2022-08-05 | 广州市微生物研究所有限公司 | Air purifier plasma concentration control method and control circuit |
CN114857733B (en) * | 2022-04-29 | 2023-11-03 | 广州市微生物研究所集团股份有限公司 | Plasma concentration control method and control circuit for air purifier |
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