CN106787920A - There is power supply in a kind of DBD ozone for mixing control - Google Patents
There is power supply in a kind of DBD ozone for mixing control Download PDFInfo
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- CN106787920A CN106787920A CN201710042774.4A CN201710042774A CN106787920A CN 106787920 A CN106787920 A CN 106787920A CN 201710042774 A CN201710042774 A CN 201710042774A CN 106787920 A CN106787920 A CN 106787920A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of DBD ozonizer power supplies for mixing control, including rectification circuit, LC filter circuits, single-phase full bridge inverter circuit, high-frequency step-up transformer, control system, drive circuit and load, the PWM ripples of hybrid control system can simultaneously control the impulse density and pulse width of single-phase full bridge inverter circuit output voltage to be used to Power Regulation through drive circuit.The current phase and frequency signal that the PWM ripples generation module of hybrid control system is sent into according to phase-locked loop module produce preliminary PWM ripples, the impulse density control signal for being expected algoritic module feeding further according to impulse density makees impulse density adjustment to preliminary PWM ripples, and the phase shifting angle control signal finally sent into further according to PI controllers makees phase shift treatment to PWM ripples and obtains final PWM ripples.The present invention is difficult discontinuously with load current, and system is difficult the superperformance of losing lock, it can be ensured that ozone generator is in efficient discharge state all the time, and the loss of power is small with Power Regulation simple and stable.
Description
Technical field
The present invention relates to a kind of special power supply, more particularly to a kind of DBD ozonizer power supplies for mixing control.
Background technology
Ozone is the allotrope of oxygen, and at normal temperatures, it is a kind of light blue gas for having an off-odor.Ozone
Strong oxidizing property makes it be widely used in fields such as water process, food processing, cultural control disease pest and health cares.Mesh
The preceding artificial method for preparing ozone can be divided into by preparation principle difference：Gaseous discharge method, photochemical method and electrochemical process.Wherein gas
Dielectric barrier discharge method (Dielectric Barrier Discharge, DBD) in body electric discharge is industrially to prepare ozone
The most feasible and effective method.Dielectric Barrier Discharge Type Ozone Generator can be divided into non-discharge condition in one work period
And discharge condition, load can be equivalent to air-gap capacitance C under non-discharge conditiongWith dielectric capacitance CdSeries connection；Under discharge condition
Air-gap capacitance CgA voltage direction voltage source opposite with input direction, and air-gap capacitance breakdown voltage base can be equivalent to
Originally remain unchanged, this voltage is referred to as electric discharge maintenance voltage UZ.The research that current ozone occurs power supply is concentrated mainly on soft opening
Close and realize and Power Regulation characteristic aspect.
Document (Lu Zhibin, induction heating power PDM Power Regulation technique studies, North China Electric Power University's master thesis,
2013,22-25) improved pulse density modulated (Pulse Density Modulation, PDM) Power Control side is described
Method, it is time and inversion of the inverter to load conveying energy in a controlling cycle to improve PDM and define pulse density modulated D
Device is not to the ratio of load conveying energy time, i.e. D=Ton/Toff.The general principle of modified PDM Power Regulations is：In a control
In cycle T, comprising n prime power regulating cycle.Work as D>1:When 1, in a controlling cycle T, only 1 prime power is adjusted
Inverter circuit is to load output power in the section cycle, and inverter circuit is always in remaining (n-1) individual prime power regulating cycle
In power output state；Work as D<1:When 1, then in a controlling cycle T, inversion in only 1 prime power regulating cycle
To load output power, inverter circuit is constantly in not power output to circuit in remaining (n-1) individual prime power regulating cycle
State.Improving PDM can effectively improve the easy intermittent problem of electric current that traditional PDM occurs in the smaller situation of modulation, Ke Yishi
Existing reliable Sofe Switch.But PDM Power Regulation modes belong to step power regulation, it is difficult to meet actual Power Regulation demand.
Document (Tang Jie, the research and development of serial-resonant DBD type ozonizer power supplies, Hunan University's master's degree
Paper, 2004,28-46) describe capacitive phase-shift pulse width modulated (phase-shifted Pulse Width
Modulation, PSPWM) Poewr control method.Capacitive PSPWM defines load current point and inverter output voltage forward position
Phase difference be phase shifting angle θ.The PWM ripples signal of reference arm has same period and identical zero crossing, phase shift with load current
Arm PWM ripple relative datum arm PWM ripples stagger phase shifting angle θ, and the regulation of discharge power can be realized by adjusting phase shifting angle θ sizes.
Capacitive PSPWM has Power Regulation wide ranges, the advantage of stepless power regulating, and can realize power closed loop.But capacitive PSPWM can only be realized
The ZVS shut-offs of the Sofe Switch and phase shift arm of reference arm, opening for phase shift arm belongs to hard open-minded, and suppresses existing with diode negative peak
The generation of elephant, is easily caused the damage of switching device.
The content of the invention
The present invention is independent for PDM problem and capacitive PSPWM that individually the lower DBD types ozone of control occurs power supply step power regulation
The problems such as lower DBD types ozone generation power supply phase shift arm of control is opened firmly, there is provided a kind of DBD ozone of mixing control occurs power supply.
The technical solution adopted by the present invention is：A kind of DBD ozonizer power supplies for mixing control, including rectification circuit,
LC filter circuits, single-phase full bridge inverter circuit, high-frequency step-up transformer, ozone generator load, control system, drive circuit；
Described rectification circuit is connected through LC filter circuits with single-phase full bridge inverter circuit, the output of single-phase full bridge inverter circuit and high frequency
The primary side connection of step-up transformer, the secondary side of high-frequency step-up transformer is connected with ozone generator load.
Described control system includes current sample module, voltage sample module, phase-locked loop module, multiplier, compares ring
Section, pi regulator, improvement PDM impulse densities are expected algoritic module and PWM ripple generation modules.Load current i is by current sense
Device is measured and is sent to current sample module, and the output signal of current sample module is divided into two-way, phase-locked loop module is sent into all the way, separately
Send into multiplier all the way, the phase of described phase-locked loop module output current sampled signalWith frequency f, the output letter of phaselocked loop
Number it is sent to PWM ripple generation modules.Inverter output voltage UABMeasured by voltage sensor and sent into voltage sample module, voltage
The output feeding multiplier of sampling module.Described multiplier is output as realtime power P, the output of multiplier and given power P*
Comparing element is sent into together, and error term is simultaneously sent to PI controllers by comparing element output error, and described PI controllers are defeated
Go out the control signal of phase shifting angle θ and the control signal of phase shifting angle θ is sent to PWM ripple generation modules.Described phase shifting angle θ is inverse
Become load current point i and inverter output square-wave voltage U when device is in power output stateABThe phase difference in forward position.It is described
Given power P*Send into simultaneously and improve PDM impulse densities expection algoritic module, described improvement PDM impulse densities are expected algorithm
Module output pulse density modulated is sent to PWM ripple generation modules than the control signal for D and by this control signal.
The input signal of described PWM ripple generation modules includes the current phase of phase-locked loop module outputBelieve with frequency f
Number, the control signal of the phase shifting angle θ of pi regulator output, improve the impulse density that PDM impulse densities are expected algoritic module output
Modulation ratio is the control signal of D.The current phase that described PWM ripples generation module is input into according to phase-locked loop moduleBelieve with frequency f
Number produce same period, the preliminary PWM ripples of identical zero crossing.Described preliminary PWM ripples are in prime power regulating cycle
Control switching tube VT1, VT3 are open-minded in positive half cycle, VT2, VT4 shut-off；Control switching tube VT1, VT3 shut-offs in negative half period, VT2,
VT4 is open-minded.Described prime power regulating cycle is a current cycle.
Described PWM ripples generation module is expected the impulse density tune of algoritic module input further according to PDM impulse densities are improved
Make the impulse density that preliminary PWM ripples are controlled than the control signal for D.Work as D>1:When 1, its controlling cycle T is individual basic comprising (D+1)
In the power adjusting cycle, in its controlling cycle T, inverter does not export shape in power in only one of which prime power regulating cycle
State, inverter is in power output state in remaining D prime power regulating cycle；Work as D<1:When 1, its controlling cycle T is included
(1+1/D) individual prime power regulating cycle, in its controlling cycle T, inverter is in only one of which prime power regulating cycle
Power output state, inverter is in power not output state in remaining 1/D prime power regulating cycle.Described power is defeated
Do well down, the PWM ripples of VT1, VT3, VT2, VT4 are consistent with preliminary PWM ripples in a prime power regulating cycle.Described work(
Not under output state, the PWM ripples of VT1, VT3, VT2, VT4 control VT1, VT2 to close to rate always in a prime power regulating cycle
Disconnected, VT4, VT3 are open-minded.
The control signal of the phase shifting angle θ that described PWM ripples generation module is exported further according to PI controllers is to by improving PDM
The PWM ripples of control make phase shift treatment, obtain final PWM ripple signals.Described phase shift treatment：The PWM ripples of VT1 and VT4 are constant,
The PWM ripples of VT3, VT2 lag behind VT1, the PWM ripple θ angles of VT4 respectively.
Preferably, a kind of improvement PDM impulse densities of the DBD ozonizer power supplies of described mixing control are expected to calculate
Method module is judged and is exported corresponding optimum pulse density modulation to compare D by empirical algorithms to the given power being input into.
Preferably, a kind of high-frequency step-up transformer of the DBD ozonizer power supplies of described mixing control provides leakage
It is anti-to constitute load resonant with capacitive load.
Beneficial effect：The present invention drives DBD type ozone using the method for improving PDM and capacitive PSPWM hybrid modulation power
The power switch pipe of generator power supply inverter circuit.Mixing control changes traditional PDM trigger pulse producing methods, touches
Hair pulse distribution is more uniformly distributed so that the fluctuation of load current is greatly reduced and is difficult discontinuously, and system is difficult losing lock, Ke Yishi
Now reliable Sofe Switch, reduces switching loss, improves power work efficiency.Mixing control has the good tune of capacitive PSPWM simultaneously
Work(characteristic, it is possible to achieve stepless power regulating, and can realize that power closed loop ensures that power output can quickly track setting power,
Improve the stability that ozone occurs power supply Power Regulation.
Brief description of the drawings
Fig. 1 is schematic diagram of the invention；
Fig. 2 is inverter output voltage and current waveform figure in hybrid control system in the present invention；
Fig. 3 is hybrid control system PWM control module workflow diagrams of the present invention；
Fig. 4 a-4c are the inverter output voltage and load current waveform obtained by present example emulation；
Fig. 5 a-5c are the power closed loop waveform obtained by present example emulation.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
The present invention includes that rectification circuit 1, LC filter circuits 2, single-phase full bridge inverter circuit 3, high frequency rise buckling as seen from Figure 1
The load 5, control system 6 of depressor 4, ozone generator, drive circuit 16；Described rectification circuit 1 through LC filter circuits 2 with it is single-phase
Full bridge inverter 3 is connected, and the output of single-phase full bridge inverter circuit 3 is connected with the primary side of high-frequency step-up transformer 4, high frequency liter
The secondary side of pressure transformer 4 is connected with ozone generator load 5.
Current sample module 7, voltage sample module 8, phaselocked loop are included by the visible control system of the present invention 6 of figure one
Module 9, multiplier 10, comparing element 11, pi regulator 13, improvement PDM impulse densities are expected algoritic module 14 and PWM ripples are produced
Raw module 15.Load current i is measured by current sensor and is sent to current sample module 7, the output signal of current sample module 8
It is divided into two-way, phase-locked loop module 9 is sent into all the way, multiplier 10, the described output current of phase-locked loop module 9 sampling is sent into another road
The phase of signalWith frequency f, the output signal of phaselocked loop is sent to PWM ripples generation module 15.Inverter output voltage UABBy
Voltage sensor is measured and sends into voltage sample module 8, the output feeding multiplier 10 of voltage sample module 8.Described multiplication
Device 10 is output as realtime power P, the output of multiplier 10 and given power P*12 send into comparing element 11, comparing element 11 together
Error term is simultaneously sent to PI controllers 13 by output error, and described PI controllers 13 export the control signal of phase shifting angle θ simultaneously
The control signal of phase shifting angle θ is sent to PWM ripples generation module 15.Described phase shifting angle θ is that inverter is in power output shape
Load current point i and inverter output square-wave voltage U during stateABThe phase difference in forward position.Described given power P*12 simultaneously
Feeding improves PDM impulse densities and is expected algoritic module 14, and described improvement PDM impulse densities are expected the output pulse of algoritic module 14
Density modulation is sent to PWM ripples generation module 15 than the control signal for D and by this control signal.
It is illustrated in figure 2 inverter output voltage and current waveform figure in hybrid control system of the present invention.VT1 as seen from the figure,
The PWM ripples and current loop current intelligence of VT2, VT3, VT4.The control of the existing impulse density of inverter output voltage as seen from the figure
System, also there is phase-shift pulse width control system.Inverter output voltage pulse density modulated ratio is 2 in Fig. 2：1, i.e. the first two current cycle
To load output power, latter current cycle inverter is in power not output state to interior inverter.Work as inverter as seen from the figure
In power not output state when, VT3, VT4 constant conduction, VT1, VT2 are persistently turned off, and now load current Natural Attenuation shakes
Swing；When inverter is in power output state, PWM ripples are made capacitive PSPWM Power Regulations to inverter and are controlled through drive circuit, by scheming
It can be seen that phase shifting angle θ is the phase difference of current signal zero crossing and inverter output voltage forward position.
It is illustrated in figure 3 hybrid control system PWM control module workflow diagrams of the present invention.Described PWM as seen from the figure
The input signal of ripple generation module includes the current phase of phase-locked loop module outputThe shifting exported with frequency f signals, pi regulator
The control signal of phase angle theta, improvement PDM impulse densities are expected the pulse density modulated of algoritic module output than the control signal for D.
The current phase that described PWM generation modules are input into according to phase-locked loop moduleSame period, identical mistake are produced with frequency f signals
The preliminary PWM ripples of zero point.Described preliminary PWM ripples controlled in a positive half cycle for prime power regulating cycle switching tube VT1,
VT3 is open-minded, VT2, VT4 shut-off；Control switching tube VT1, VT3 shut-offs in negative half period, VT2, VT4 are open-minded.Described prime power
Regulating cycle is a current cycle.
Described PWM generation modules are expected the impulse density tune of the input of algoritic module 14 further according to PDM impulse densities are improved
Make the impulse density that preliminary PWM ripples are controlled than the control signal for D.Work as D>1:When 1, its controlling cycle T is individual basic comprising (D+1)
In the power adjusting cycle, in its controlling cycle T, inverter does not export shape in power in only one of which prime power regulating cycle
State, inverter is in power output state in remaining D prime power regulating cycle；Work as D<1:When 1, its controlling cycle T is included
(1+1/D) individual prime power regulating cycle, in its controlling cycle T, inverter is in only one of which prime power regulating cycle
Power output state, inverter is in power not output state in remaining 1/D prime power regulating cycle.Described power is defeated
Do well down, the PWM ripples of VT1, VT3, VT2, VT4 are consistent with preliminary PWM ripples in a prime power regulating cycle.Described work(
Not under output state, the control of PWM ripples VT1, VT2 of VT1, VT3, VT2, VT4 are persistently closed rate in a prime power regulating cycle
It is disconnected, VT4, VT3 constant conduction.
Preliminary PWM ripples are not exported by obtaining power output cycle PWM ripples and power after impulse density control as seen from Figure 3
Cycle PWM ripple.Power output cycle PWM ripples and power do not export the phase shifting angle θ's that cycle PWM ripple is exported further according to pi regulator
Control signal makees phase shift treatment and obtains final PWM ripples.Described phase shift treatment：The PWM ripples of VT1 and VT4 are constant, VT3, VT2
PWM ripples lag behind VT1, the PWM ripple θ angles of VT4 respectively.
Power supply of the present invention is 500W, 1000W in given power under being illustrated in figure 4 one group of canonical parameter, under 1500W
Inverter circuit output voltage and load current waveform.Inverter circuit pulse density modulated is respectively 1 than D as seen from the figure：2、2：
1、4：1 and inverter circuit output voltage and load current have phase shift relation.Continuous load current is good, be difficult discontinuously, be
System is difficult losing lock.
Be illustrated in figure 5 power supply of the present invention under one group of canonical parameter is 500W, 1000W, 1500W in given power
Under power closed-loop control curve.Power can quickly track setting power as seen from the figure, improve ozone and power supply occurs
The stability of Power Regulation.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention,
Some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.It is unknown in this example
True each part can use prior art to be realized.
Claims (3)
- It is 1. a kind of to mix the DBD ozonizer power supplies for controlling, it is characterised in that：Including rectification circuit (1), LC filter circuits (2), single-phase full bridge inverter circuit (3), high-frequency step-up transformer (4), ozone generator load (5), control system (6), driving Circuit (16)；Described rectification circuit (1) is connected through LC filter circuits (2) with single-phase full bridge inverter circuit (3), and single-phase full bridge is inverse Become circuit (3) output be connected with the primary side of high-frequency step-up transformer (4), the secondary side of high-frequency step-up transformer (4) with it is smelly Oxygen Generator load (5) connection；Described control system (6) includes current sample module (7), voltage sample module (8), phase-locked loop module (9), multiplier (10), comparing element (11), PI controllers (13), improvement PDM impulse densities are expected algoritic module (14) and PWM ripples produce mould Block (15)；Load current i is measured by current sensor and is sent to current sample module (7), the output letter of current sample module (8) Number it is divided into two-way, phase-locked loop module (9) is sent into all the way, multiplier (10), described phase-locked loop module (9) output is sent into another road The phase of current sampling signalWith frequency f, the output signal of phaselocked loop is sent to PWM ripples generation module (15)；Inverter is exported Voltage UABMeasured by voltage sensor and sent into voltage sample module (8), the output feeding multiplier of voltage sample module (8) (10)；Described multiplier (10) is output as realtime power P, output and the given power P of multiplier (10)*(12) send into together Error term is simultaneously sent to PI controllers (13), described PI controls by comparing element (11), comparing element (11) output error The control signal of phase shifting angle θ is simultaneously sent to PWM ripples generation module (15) by the control signal of device (13) output phase shifting angle θ；It is described Phase shifting angle θ be load current point i and inverter output square-wave voltage U when inverter is in power output stateABForward position Phase difference；Described given power P*(12) algoritic module (14) is expected while sending into and improving PDM impulse densities, described changes Enter PDM impulse densities expection algoritic module (14) output pulse density modulated to be sent than the control signal for D and by this control signal Enter to PWM ripples generation module (15)；The input signal of described PWM ripples generation module (15) includes the current phase of phase-locked loop module (9) outputWith frequency f Signal, the control signal of the phase shifting angle θ of pi regulator (13) output, improvement PDM impulse densities are expected algoritic module (14) output Pulse density modulated than the control signal for D；Described PWM ripples generation module (15) are input into according to phase-locked loop module (9) Current phaseSame period, the preliminary PWM ripples of identical zero crossing are produced with frequency f signals；Described preliminary PWM ripples are at one Control switching tube VT1, VT3 are open-minded in the positive half cycle of prime power regulating cycle, VT2, VT4 shut-off；Controlling switch in negative half period Pipe VT1, VT3 are turned off, and VT2, VT4 are open-minded；Described prime power regulating cycle is a current cycle；Described PWM ripples generation module (15) are close further according to the pulse for improving PDM impulse densities expection algoritic module (14) input Degree modulation ratio controls the impulse density of preliminary PWM ripples for the control signal of D；Work as D>1:When 1, its controlling cycle T is individual comprising (D+1) Prime power regulating cycle, in its controlling cycle T, inverter is not exported in power in only one of which prime power regulating cycle State, inverter is in power output state in remaining D prime power regulating cycle；Work as D<1:When 1, its controlling cycle T bags Containing (1+1/D) individual prime power regulating cycle, in its controlling cycle T, in only one of which prime power regulating cycle at inverter In power output state, inverter is in power not output state in remaining 1/D prime power regulating cycle；Described power Under output state, the PWM ripples of VT1, VT3, VT2, VT4 are consistent with preliminary PWM ripples in a prime power regulating cycle；Described Not under output state, the PWM ripples of VT1, VT3, VT2, VT4 control VT1, VT2 to power always in a prime power regulating cycle Shut-off, VT4, VT3 are open-minded；The control signal of the phase shifting angle θ that described PWM ripples generation module (15) are exported further according to PI controllers (13) is to by changing The PWM ripples for entering PDM controls make phase shift treatment, obtain final PWM ripple signals；Described phase shift treatment：The PWM ripples of VT1 and VT4 Constant, the PWM ripples of VT3, VT2 lag behind VT1, the PWM ripple θ angles of VT4 respectively.
- 2. the DBD ozonizer power supplies that a kind of mixing according to claim 1 is controlled, it is characterised in that：Described changes Enter PDM impulse densities expection algoritic module (14) the given power being input into is judged and exported corresponding by empirical algorithms Optimum pulse density modulation is than the control signal for D.
- 3. the DBD ozonizer power supplies that a kind of mixing according to claim 1 is controlled, it is characterised in that：Described height Frequency step-up transformer (4) provides leakage reactance and constitutes load resonant with capacitive load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042774.4A CN106787920A (en) | 2017-01-20 | 2017-01-20 | There is power supply in a kind of DBD ozone for mixing control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042774.4A CN106787920A (en) | 2017-01-20 | 2017-01-20 | There is power supply in a kind of DBD ozone for mixing control |
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| CN107276425A (en) * | 2017-07-11 | 2017-10-20 | 中山大学 | A kind of PCU Power Conditioning Unit and its power-supply system |
| CN107628590A (en) * | 2017-09-27 | 2018-01-26 | 北方工业大学 | Method and device for tracking resonant frequency of power supply of ozone generator |
| CN108332387A (en) * | 2018-01-19 | 2018-07-27 | 河海大学常州校区 | The regulation of energy system and method for the high pressure activation power drives DBD air cleaning units of PDM operating modes |
| CN109245591A (en) * | 2018-11-16 | 2019-01-18 | 郑州科创电子有限公司 | Series resonance modified PWM inversion power-regulating system based on DSP |
| CN109460106A (en) * | 2018-08-21 | 2019-03-12 | 山东荣泰感应科技有限公司 | The adaptive power adjustment module and method that intermediate frequency furnace power changes with load |
| CN110798091A (en) * | 2019-11-13 | 2020-02-14 | 平顶山学院 | Phase-shifting control method, device and equipment for power supply of ozone generator |
| CN110868081A (en) * | 2019-11-28 | 2020-03-06 | 大冶联源电器科技有限公司 | Special power supply for ozone generator |
| CN113141062A (en) * | 2021-04-23 | 2021-07-20 | 新疆大学 | Wireless power transmission system and phase shift keying communication feedforward compensation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276425A (en) * | 2017-07-11 | 2017-10-20 | 中山大学 | A kind of PCU Power Conditioning Unit and its power-supply system |
| CN107628590A (en) * | 2017-09-27 | 2018-01-26 | 北方工业大学 | Method and device for tracking resonant frequency of power supply of ozone generator |
| CN108332387A (en) * | 2018-01-19 | 2018-07-27 | 河海大学常州校区 | The regulation of energy system and method for the high pressure activation power drives DBD air cleaning units of PDM operating modes |
| CN108332387B (en) * | 2018-01-19 | 2020-06-19 | 河海大学常州校区 | Energy regulation and control system and method of DBD air purification device |
| CN109460106A (en) * | 2018-08-21 | 2019-03-12 | 山东荣泰感应科技有限公司 | The adaptive power adjustment module and method that intermediate frequency furnace power changes with load |
| CN109245591A (en) * | 2018-11-16 | 2019-01-18 | 郑州科创电子有限公司 | Series resonance modified PWM inversion power-regulating system based on DSP |
| CN110798091A (en) * | 2019-11-13 | 2020-02-14 | 平顶山学院 | Phase-shifting control method, device and equipment for power supply of ozone generator |
| CN110798091B (en) * | 2019-11-13 | 2021-03-26 | 平顶山学院 | Phase-shifting control method, device and equipment for power supply of ozone generator |
| CN110868081A (en) * | 2019-11-28 | 2020-03-06 | 大冶联源电器科技有限公司 | Special power supply for ozone generator |
| CN113141062A (en) * | 2021-04-23 | 2021-07-20 | 新疆大学 | Wireless power transmission system and phase shift keying communication feedforward compensation method thereof |
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