CN107276425B - A kind of PCU Power Conditioning Unit and its power-supply system - Google Patents
A kind of PCU Power Conditioning Unit and its power-supply system Download PDFInfo
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- CN107276425B CN107276425B CN201710561479.XA CN201710561479A CN107276425B CN 107276425 B CN107276425 B CN 107276425B CN 201710561479 A CN201710561479 A CN 201710561479A CN 107276425 B CN107276425 B CN 107276425B
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- 230000003750 conditioning effect Effects 0.000 title claims abstract description 40
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 111
- 230000005611 electricity Effects 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010606 normalization Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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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
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
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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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of PCU Power Conditioning Unit and its power-supply systems, comprising: the first signal sampler, ozone concentration signal, generator voltage signal and generator current signal for real-time sampling ozone generator；First controller is connect with the first signal sampler, to calculate concentration error and first phase difference；With the sequentially connected inverter circuit of the first controller, LLC booster circuit；First controller generates the first pwm signal, according to concentration error and first phase difference to control inverter circuit output AC voltage；LLC booster circuit generates high-voltage alternating electricity according to alternating voltage resonance, so that the voltage and current for being coupled to ozone generator realizes the power regulation to ozone generator with the same phase of frequency to eliminate concentration error and the first phase difference.PCU Power Conditioning Unit and its power-supply system of the invention can automatically adjust the output power of ozone generator, avoid occurring between ozone generator and power-supply system detuning.
Description
Technical field
The present invention relates to power technique fields more particularly to a kind of PCU Power Conditioning Unit and its power-supply systems.
Background technique
Ozone is widely used in sewage treatment, drinks because having stronger oxidability and will not generate secondary pollution
The various fields such as water sterilization, air cleaning, wafer oxidation film preparation and semiconductor cleaning.
As shown in Figure 1, existing ozone generating-device mainly has air supply system 300, power-supply system 100, ozone generator
200 and cooling system 400 form, wherein air supply system 300 air is dried after be sent into ozone generator 200,
Ozone generator 200 synthesizes ozone by electric discharge tube discharge under the action of power-supply system 100, and cooling system 400 is then to ozone
Generator 200 is cooled down, and the ozone of synthesis is avoided to be decomposed.Due to the combined coefficient of ozone in ozone synthesis process and smelly
The stability and power-supply system 100 of oxygen device operation are closely bound up, therefore power-supply system 100 is the key that in ozone synthesis process
Component.
Currently, the inverter circuit in the power-supply system of ozone generating-device mostly uses greatly phase shift power supply topologies, to move
For phase full-bridge circuit, as shown in Figure 2 comprising 4 switching tube 101 and 4 diodes 102, wherein each switching tube 101
Output end it is in parallel with a diode 102, by phase-shift controller 103 control full bridge inverter 4 switching tubes 101 according to
Secondary conducting and disconnection output alternating current, and it is connected with transformer 104 in the output end of phase whole-bridging circuit, and then realize to ozone
The power supply of generator 200.Since the load capacitive reactance of ozone generator 200 at work changes greatly, it is easy to cause power-supply system
It is detuning with ozone generator 200, so that there are larger phase difference between the electric current and voltage of ozone generator 200, ozone occurs
Device 200 generates biggish power loss.
In order to reduce the output loss of ozone generator, in the prior art by constantly regulate power-supply system output exchange
The load performance of electric frequency, the ac frequency and ozone generator that make the output of power-supply system matches.And at present would generally
Manual adjustment knob is set for power conditioning circuitry, staff can realize the arteries and veins of power-supply system by manual adjustment knob
Manually adjusting for frequency and pulse duty factor is rushed, and then adjusts the phase shift of phase-shift circuit, to adjust the friendship of power-supply system output
Galvanic electricity frequency.But because staff completes to adjust essentially according to the practical experience of oneself, degree of regulation is low and can not
Adjusted in real time, or it is difficult to ensure that power-supply system output ac frequency and ozone generator load performance phase
Match.
Summary of the invention
In view of the above-mentioned problems, a kind of PCU Power Conditioning Unit of the invention and its power-supply system, can automatically adjust ozone hair
The output power of raw device, avoid occurring between ozone generator and power-supply system it is detuning so that ozone generator reaches maximum defeated
Efficiency out reduces the power loss of ozone generator, improves the operational efficiency of PCU Power Conditioning Unit.
In order to solve the above technical problems, a kind of PCU Power Conditioning Unit of the invention, comprising:
First signal sampler, for the ozone concentration signal of real-time sampling ozone generator, generator voltage signal and
Generator current signal；
First controller is connect, to calculate concentration error and first phase difference with first signal sampler；Wherein,
Difference of the concentration error between the ozone concentration signal and preset ozone reference concentration, the first phase difference are
The phase difference of the generator voltage signal and the generator current signal；
With the sequentially connected inverter circuit of first controller, LLC booster circuit；Wherein, the LLC booster circuit with
The ozone generator coupling；
First controller generates the first pwm signal, so that institute according to the concentration error and the first phase difference
Inverter circuit is stated according to the first pwm signal output AC voltage, and then adjusts the output to the function of the LLC booster circuit
Rate；
The LLC booster circuit generates high-voltage alternating electricity according to the alternating voltage resonance, so that being coupled to the ozone
The voltage and current of generator is realized with eliminating the concentration error and the first phase difference to the ozone with the same phase of frequency
The power regulation of generator.
Compared with prior art, PCU Power Conditioning Unit of the invention acquires ozone generator by the first signal sampler
It is dense to calculate collected ozone by the first controller for ozone concentration signal, generator voltage signal and generator current signal
Spend concentration error between signal and preset ozone reference concentration and generator voltage signal and generator current signal it
Between first phase difference, and adjust according to concentration error and first phase error the duty ratio or pulse of the first pwm signal in real time
Frequency, so that inverter circuit is according to the first pwm signal output AC voltage.Since inverter circuit is coupled with LLC booster circuit,
LLC booster circuit is coupled with ozone generator, and then can adjust LLC boosting electricity by the alternating voltage that inverter circuit exports
The high-voltage alternating electric frequency of road output makes the voltage for being coupled to ozone generator with electric current with the same phase of frequency, and then eliminates ozone hair
The concentration error and first phase difference of raw device, make ozone generator reach maximum output efficiency, and power-supply system and ozone is avoided to send out
Raw device generation is detuning, reduces the power loss of ozone generator, improves the delivery efficiency of power-supply system, extends making for power-supply system
Use the service life；In addition, since the PCU Power Conditioning Unit is according to ozone concentration signal, generator current signal and generator voltage letter
Number, it is automatically generated for eliminating the first pwm signal of concentration error and first phase difference, the adjusting of power-supply system not only can be improved
Precision, additionally it is possible to liberate manpower, improve the operational efficiency of PCU Power Conditioning Unit, and then avoid because height brought by manual adjustment at
Originally, low reliability and insecurity factor.
As an improvement of the above scheme, first controller includes:
Ozone concentration error calculating module, for calculating the ozone concentration signal and the preset ozone reference concentration
Between difference；
Reference voltage generation module, for according between the concentration error pre-established and generator reference voltage
Corresponding relationship generates corresponding generator reference voltage；
Reference current generation module, for passing through formula I=Km(V1×V2)/Vrms 2, it is calculated normalized with reference to electricity
Flow signal I, wherein KmFor normalization factor, V1 is generator reference voltage, V2 is generator voltage signal, VrmsFor generator
The virtual value of voltage signal；
First phase difference computing module, for calculating between the reference current signal and the generator current signal
Phase difference obtains the first phase difference；
First pwm signal output module, for exporting first pwm signal according to the first phase difference.
As an improvement of the above scheme, first controller further include:
First determination module, for determining whether the concentration error and the first phase difference meet preset condition, and
And first pwm signal is saved when meeting the preset condition；Wherein the preset condition is that the concentration error is located at
The preset concentration range and first phase difference is located in preset phase range；
First adjusts starting module, in ozone generator starting, first determination module to be saved
First pwm signal is exported to the inverter circuit.
As an improvement of the above scheme, the PCU Power Conditioning Unit further include:
Active PFC circuit is connected between rectification circuit and the inverter circuit, for the electricity after rectifying network voltage
Pressure signal is converted to DC voltage；
Filter capacitor, it is in parallel with the output end of the active PFC, for being filtered place to by the DC voltage
Reason.
As an improvement of the above scheme, the PCU Power Conditioning Unit, further includes:
Second signal sampler, for sampling the input voltage signal, input current signal and institute of the active PFC circuit
State the DC voltage of active PFC circuit conversion；
Second controller is connected between the second signal sampler and the active PFC circuit；
The second controller exports the 2nd PWM letter to the active PFC circuit according to voltage error and second phase difference
Number, and then adjust the output power of the active PFC circuit；Wherein, the voltage error is the DC voltage and preset
Voltage difference between PFC reference voltage, the second phase difference be the input voltage signal and the input current signal it
Between phase difference.
As an improvement of the above scheme, the second controller includes:
Voltage error computing module, for calculating between the preset PFC reference voltage and the input voltage signal
Voltage difference；
It normalizes module and obtains normalized parameter for the voltage error to be normalized；
PFC reference current generation module, for passing through formula IPFC=(C × VPFC)/VPo 2, normalized PFC is calculated
Reference current signal IPFC, wherein C is normalized parameter, VPFCFor input voltage signal, VPoFor input voltage signal virtual value；
Second phase difference computing module, for calculating between the PFC reference current signal and the input current signal
Phase difference；
Second pwm signal output module, for generating second pwm signal according to the second phase difference, so that institute
Active PFC circuit is stated according to second pwm signal, the input voltage signal is adjusted and the input current signal is with frequency
Same phase, and then adjust the output to the power of the inverter circuit.
As an improvement of the above scheme, the second controller further include:
Second determination module, for determining whether the voltage error is located in preset error range, and described
When voltage error is located in preset error range, second pwm signal is saved；
Second adjusts starting module, in ozone generator starting, second determination module to be saved
Second pwm signal is exported to the active PFC circuit.
As an improvement of the above scheme, the active PFC power supply is two-phase active PFC circuit, the active PFC electricity of two-phase
Road includes first switch tube and second switch；
The second signal sampler connects with the source electrode of the first switch tube and the source electrode of the second switch respectively
It connects, to sample the switching current of the first switch tube and the switching current of the second switch；
The second controller further includes the second pwm signal adjustment module, for adjusting described second according to current error
Pwm signal, to balance the switching current of the first switch tube and the switching current of the second switch；Wherein, the electricity
Stream error is the current difference of the switching current of the first switch tube and the switching current of the second switch.
As an improvement of the above scheme, the inverter circuit is full-bridge topology inverter circuit, half-bridge topology inverter circuit, just
Swash topology inverter circuit or flyback topologies inverter circuit.
In order to solve the above technical problems, the present invention also provides a kind of power-supply system, including any of the above-described power tune
Regulating device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ozone generating-device in the prior art of the invention.
Fig. 2 is the structural schematic diagram of power-supply system in the prior art of the invention.
Fig. 3 is a kind of structural schematic diagram of PCU Power Conditioning Unit of the embodiment of the present invention 1.
Fig. 4 is the structural schematic diagram of the first controller in the embodiment of the present invention 1.
Fig. 5 is the relationship in the embodiment of the present invention between the delivery efficiency and pulse width, pulse frequency of ozone generator
Curve graph.
Fig. 6 is a kind of structural schematic diagram of PCU Power Conditioning Unit of the embodiment of the present invention 2.
Fig. 7 is the structural schematic diagram of second controller in the embodiment of the present invention 2.
Fig. 8 is the structural schematic diagram of the first configuration example in the embodiment of the present invention 2.
Fig. 9 is the structural schematic diagram of the second configuration example in the embodiment of the present invention 2.
Figure 10 is the structural schematic diagram of second controller in the second configuration example in the embodiment of the present invention 2.
Specific embodiment
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But the present invention can be with
It is different from the other modes of this description much to implement, those skilled in the art can be without violating the connotation of the present invention
Similar popularization is done, therefore the present invention is not limited by the specific embodiments disclosed below.
Clear, complete description is carried out to technical solution of the present invention with attached drawing combined with specific embodiments below.
Embodiment 1
As shown in figure 3, a kind of PCU Power Conditioning Unit of the invention, comprising: the first signal sampler 1, with ozone generator
200 connections, ozone concentration signal, generator voltage signal and generator electric current for real-time sampling ozone generator 200 are believed
Number；First controller 2 is connect, to calculate concentration error and first phase difference with the first signal sampler 1；Wherein, concentration error
For the difference between ozone concentration signal and preset ozone reference concentration, first phase difference is generator voltage signal and generation
The phase difference of device current signal；Inverter circuit 3 is connect with the first controller 2；LLC booster circuit 4 is connect with inverter circuit 3；
First controller 2 generates the first pwm signal, so that inverter circuit 3 is according to the first PWM according to concentration error and first phase difference
Signal output AC voltage, to adjust the output to the power of LLC booster circuit 4；LLC booster circuit 4 respectively with inverter circuit 3 and
Ozone generator 200 couples；LLC booster circuit 4 adjusts the high-voltage alternating electric frequency of output according to alternating voltage, to eliminate concentration
Error and first phase difference are realized and are sent out ozone so that being coupled to the voltage and the same same phase of frequency of electric current of ozone generator 200
The power regulation of raw device 200.
Compared with prior art, PCU Power Conditioning Unit of the invention samples ozone generator by the first signal sampler 1
200 ozone concentration signal, generator voltage signal and generator current signal is calculated collected by the first controller 2
Concentration error and generator voltage signal and generator electric current between ozone concentration signal and preset ozone reference concentration
First phase difference between signal, and the duty ratio of the first pwm signal is adjusted according to concentration error and first phase error in real time
Or pulse frequency, so that inverter circuit 3 is according to the first pwm signal output AC voltage.Due to inverter circuit 3 and LLC boosting electricity
Road 4 couples, and LLC booster circuit 4 is coupled with ozone generator 200, and then the alternating voltage exported by inverter circuit 3
The high-voltage alternating electric frequency that LLC booster circuit 4 exports is adjusted, keeps the voltage for being coupled to ozone generator 200 and electric current same with frequency
Phase, and then concentration error and first phase difference in ozone generator 200 are eliminated, so that ozone generator 200 is reached maximum output
Efficiency avoids power-supply system from occurring with ozone generator 200 detuning, reduces the power loss of ozone generator 200, improves power supply
The delivery efficiency of system extends the service life of power-supply system；In addition, since the PCU Power Conditioning Unit is believed according to ozone concentration
Number, generator current signal and generator voltage signal, be automatically generated for eliminating the first of concentration error and first phase difference
The degree of regulation of power-supply system not only can be improved in pwm signal, additionally it is possible to liberate manpower, improve the operation effect of PCU Power Conditioning Unit
Rate, and then avoid because of high cost, low reliability brought by manual adjustment and insecurity factor.
Wherein, dense for calculating ozone as shown in figure 4, the first controller 2 includes: ozone concentration error calculating module 21
Spend the difference between signal and preset ozone reference concentration；Reference voltage generation module 22, for dense according to pre-establishing
The corresponding relationship between error and generator reference voltage is spent, corresponding generator reference voltage is generated；Reference current generates mould
Block 23, for passing through formula I=Km(V1×V2)/Vrms 2, normalized reference current signal I is calculated, wherein KmTo return
One changes the factor, and V1 is generator reference voltage, V2 is generator voltage signal, VrmsFor the virtual value of generator voltage signal；The
One phase difference calculating module 24, for calculating the phase difference between reference current signal and generator current signal, and then obtains
First phase difference；First pwm signal output module 25, for according to first phase difference adjust the first pwm signal duty ratio or
Pulse frequency simultaneously exports, so that inverter circuit 3 adjusts alternating current voltage frequency according to the first pwm signal.
Specifically, when first phase difference is less than 0, i.e., the voltage delay of ozone generator 200 is in ozone generator 200
Electric current, the then duty ratio that the first pwm signal of the first pwm signal output module 25 output gradually increases at predetermined intervals
Or it is gradually reduced pulse frequency at predetermined intervals, until first phase difference is 0；It is smelly when first phase difference is greater than 0
The voltage of Oxygen Generator 200 is ahead of the electric current of ozone generator 200, then the first of the first pwm signal output module 25 output
Pwm signal is gradually reduced duty ratio at predetermined intervals or gradually increases pulse frequency at predetermined intervals, directly
It is 0 to first phase difference.Due to being preset with corresponding relationship between ozone concentration error and generator reference voltage, first
Pwm signal output module 25 can eliminate the ozone concentration error and the of ozone generator 200 by adjusting the first pwm signal automatically
One phase difference reduces the power loss of ozone generator 200.
Further, in order to improve the adjusting efficiency of PCU Power Conditioning Unit, as shown in Figure 3 and Figure 4, first controller 2
Further include: the first determination module 26 for determining whether concentration error and first phase difference meet preset condition, and is meeting
Corresponding first pwm signal is saved when preset condition；Wherein preset condition is that concentration error is located at preset concentration range and the
One phase difference is located in preset phase range；First adjusts starting module 27, is used for when ozone generator 200 starts, will
The first pwm signal that first determination module 26 saves is exported to inverter circuit 3, and then ozone generator 200 can be kept to start
When can reach maximum output efficiency, promote service life and the operational efficiency of ozone generator 200.
In the specific implementation process, as shown in Figure 3 and Figure 5, when the duty ratio of the first pwm signal is fixed, the first PWM letter
The modulating frequency for the first pwm signal that number output module 25 exports constantly increases, so that concentration error and first phase difference first subtract
It is small to increase again, reduce again so that the delivery efficiency of ozone generator 200 first increases, thus can get ozone generator 200
Maximum output efficiency.
Embodiment 2
As shown in Figure 6 and Figure 7, another PCU Power Conditioning Unit of the invention, in addition to including whole components in embodiment 1
Except, further includes: active PFC circuit 5 is connected between rectification circuit 12 and inverter circuit 3, the electricity for exporting power grid 8
It nets the voltage signal after electric pressuring meridian rectification circuit 12 rectifies and is converted to DC voltage；Filter capacitor 6, simultaneously with active PFC circuit 5
Connection, for being filtered to the voltage after the conversion of active PFC circuit 5.
Preferably, the PCU Power Conditioning Unit further include: second signal sampler 7, for sampling the defeated of active PFC circuit 5
Enter the DC voltage after voltage signal, input current signal and active PFC circuit 5 are converted；Second signal sampler 7 and active
Pfc circuit 5 is connect with second controller 8 respectively, so that second controller 8 generates second according to voltage error and second phase difference
Pwm signal, it is poor to eliminate the second phase between 5 input voltage signal of active PFC circuit and input current signal, it reduces active
The power loss of pfc circuit 5, and then improve the power factor of power-supply system；Simultaneously as second controller 8 can pass through second
Signal sampler 7 obtains the input voltage signal and input current signal of active PFC circuit 5, can be according to 8 electric power thus supplied of power grid
The output power of active PFC circuit 5 is adjusted in real time, and then the power efficiency of power-supply system can be improved, and avoids load pollution power grid；
Wherein, voltage difference of the voltage error between DC voltage and preset PFC reference voltage, second phase difference are input voltage letter
Phase difference number between input current signal.
Wherein, as shown in fig. 7, the second controller 8 further include: voltage error computing module 81, it is preset for calculating
Voltage difference between PFC reference voltage and PFC DC voltage；Module 82 is normalized, for place to be normalized in voltage error
Reason, obtains normalized parameter；PFC reference current generation module 83, for passing through formula IPFC=(C × VPFC)/VPo 2, calculate
To normalized PFC reference current signal IPFC, wherein C is normalized parameter, VPFCFor input voltage signal, VPoFor input electricity
Press the virtual value of signal；Second phase difference computing module 84, for calculating between PFC reference current signal and input current signal
Phase difference；Second pwm signal output module 85, for generating the second pwm signal according to second phase difference, so that active PFC
For circuit 5 according to the second pwm signal, adjusting input voltage signal with input current signal is the same same phase of frequency, and then is adjusted the output to
The power of inverter circuit 3.
Specifically, when second phase error is less than 0, i.e. the input voltage of active PFC circuit 5 lags behind input current,
Then the second pwm signal output module 85 generate the second pwm signal gradually increase at predetermined intervals duty ratio or with
Preset time interval is gradually reduced pulse frequency, until second phase error is 0；It is active when second phase error is greater than 0
The input voltage of pfc circuit 5 is ahead of input current, then the second pwm signal that the second pwm signal output module 85 generates is with pre-
If time interval be gradually reduced duty ratio or gradually increase pulse frequency at predetermined intervals, until second phase miss
Difference is 0.
Further, in order to increase the adjusting efficiency of PCU Power Conditioning Unit, the second controller 8 further include: second determines
Module 86 for determining whether voltage error is located in preset error range, and is determining that it is preset that voltage error is located at
When in error range, corresponding second pwm signal is saved；Second adjusts starting module 87, for starting in ozone generator 200
When, the second pwm signal that the second determination module 86 saves is exported to active PFC circuit 5.
In the above-described embodiments, active PFC circuit 5 is that single-phase active pfc circuit, two-phase active PFC circuit or multiphase have
Source pfc circuit.
Further, inverter circuit 3 is full-bridge topology inverter circuit, half-bridge topology inverter circuit, forward topology inversion electricity
Road or flyback topologies inverter circuit.
Preferably, being in series with overvoltage crowbar, anti-surge circuit or overcurrent protection electricity between power grid and rectification circuit
Road prevents power grid abnormal electrical power supply, to protect the active PFC circuit 5 of rear class.Wherein, current foldback circuit is by relay and fusing
Device composes in parallel；Surging prevention resistance is in parallel by relay and negative tempperature coefficient thermistor；Overvoltage crowbar is by relay
Device is composed in parallel with varistor.
Preferably, as shown in fig. 6, being connected between the first signal sampler 1 and the first controller 2 for shaping filter
The first plastic filter circuit 9；For shaping filter is connected between second signal sampler 7 and second controller 8
Two plastic filter circuits 10, to reduce sampling interference.
Further, the first signal sampler 1 includes the voltage transformer or partial pressure for sample generator voltage signal
Sampling resistor, current transformer or sampling resistor for sample generator current signal；Second signal sampler 7 includes being used for
The voltage transformer of sampled input voltage signal or partial pressure sampling resistor, for sample input current signal current transformer or
Sampling resistor.
Embodiment 3
As shown in figure 8, for the first exemplary construction schematic diagram of PCU Power Conditioning Unit in embodiment 2.
Inverter circuit 3 is configured to full bridge inverter, which includes first switch tube 31, second switch
32, third switching tube 33 and the 4th switching tube 34；Wherein, the of the first output end and third switching tube 33 of first switch tube 31
One output end is connect with one end of filter capacitor 6, and the second of the second output terminal of second switch 32 and the 4th switching tube 34 is defeated
Outlet is connect with the other end of filter capacitor 6；First output of the second output terminal and second switch 32 of first switch tube 31
End connection, and the tie point and LLC series resonance of the second efferent duct of first switch and the first output end of second switch 32
One input terminal of circuit 41 connects；The second output terminal of third switching tube 33 is connected with the first output end of the 4th switching tube 34,
And the tie point of the first output end of the second output terminal of third switching tube 33 and the 4th switching tube 34 and LLC series resonant circuit
41 another input terminal connection；The input of first switch tube 31, second switch 32, third switching tube 33 and the 4th switching tube 34
End is connect with the first controller 2, so that first switch tube 31 and the 4th switching tube 34 are simultaneously turned on or cut according to the first pwm signal
Only and second switch 32 and third switching tube 33 also result in or end according to the first pwm signal, and then promote the full-bridge
Inverter circuit 3 exports stable alternating voltage, improves the electromagnetic interference problem of PCU Power Conditioning Unit, moreover it is possible to improve full-bridge inverting electricity
The topological efficiency on road 3.Due to the first pwm signal according to the ozone concentration signal of ozone generator 200, generator voltage signal,
Generator current signal and preset ozone reference concentration generate, therefore full-bridge inverting electricity is adjusted by the first pwm signal
The frequency of 3 output AC voltages in road, so that the resonance frequency of LLC series resonant circuit 41 is adjusted, so that boosting by high frequency
Device 42 is coupled to the voltage and current of ozone generator 200 with the same phase of frequency, reduces the power loss of ozone generator 200, improves
The delivery efficiency of ozone generator 200 realizes that power-supply system is matched with the load characteristic of ozone generator 200.
It is to be appreciated that above-mentioned inverter circuit 3 is only described in detail by taking full bridge inverter as an example, inverter circuit 3
It can also be half-bridge topology inverter circuit, forward topology inverter circuit or flyback topologies inverter circuit, will not repeat them here.
Active PFC circuit 5 is configured to single-phase active pfc circuit, which includes the first inductance 51, the
One switching tube 52 and the first rectifier diode 53；Wherein, first switch tube 52 can be MOSFET, BJT, IGBT or other types
Switching device, below by first switch tube 52 be MOSFET for be illustrated.
One end of first inductance 51 and the output end of overvoltage crowbar connect, and the other end of the first inductance 51 is opened with first
The anode of the drain electrode and the first rectifier diode 53 of closing pipe 52 is separately connected；The source electrode of first switch tube 52 and the first two poles of rectification
The cathode of pipe 53 and the both ends of filter capacitor 6 are separately connected；The grid of first switch tube 52 is connect with second controller 8, so that
First switch tube 52 adjusts the input voltage of the single-phase active pfc circuit and defeated according to the second pwm signal on or off
Entering electric current is that the delivery efficiency of power-supply system can be improved, avoid pollution power grid with the same phase of frequency；Simultaneously as the active PFC circuit
5 realize zero voltage switch using second controller 8, moreover it is possible to greatly reduce switching loss.
In the present embodiment, LLC booster circuit 4 includes LLC series resonant circuit 41 and high frequency booster 42；Wherein, LLC
Series resonant circuit 41 is sequentially connected in series the resonant capacitance 412 coupled including the first resonant inductance 411, with the first resonant inductance 411
With the second resonant inductance 413；The input terminal of transformer 4 is in parallel with the second resonant inductance 413.
Embodiment 4
As shown in figure 9, for the second exemplary construction schematic diagram of PCU Power Conditioning Unit in embodiment 2.
Inverter circuit is identical as the inverter circuit in embodiment 3, is again arranged as full bridge inverter.Difference exists
In configuring active PFC circuit 5 in the embodiment is two-phase active PFC circuit.The two-phase active PFC circuit includes the first inductance
511, the second inductance 521, first switch tube 512, second switch 522, the first rectifier diode 513 and the second rectifier diode
523；Wherein, first switch tube 512 and second switch 522 can be MOSFET, BJT, IGBT or other kinds of switching device,
It is described in detail so that first switch tube 512 and second switch 522 are MOSFET as an example below.
The series arm of first inductance 511 and the first rectifier diode 513 be connected to the output end of surge protection circuit with
Between the positive ends of filter capacitor 6, the series arm of the second inductance 521 and the second rectifier diode 523 and the first inductance 511
It is in parallel with the series arm of the first rectifier diode 513；The tie point and of first inductance 511 and the first rectifier diode 513
The drain electrode of one switching tube 512 connects, and the source electrode of first switch tube 512 is connect with the negative polarity end of filter capacitor 6；Second inductance
521 connect with the tie point of the second rectifier diode 523 with the drain electrode of second switch 522, the source electrode of second switch 522 with
The negative polarity end of filter capacitor 6 connects；The grid of first switch tube 512 and second switch 522 is connect with second controller 8,
So that first switch tube 512 and second switch 522 can be worked alternatively according to the second pwm signal of two-way, the two-phase is adjusted
The input voltage and input current of active PFC circuit 5 are that the delivery efficiency of power-supply system can be improved, avoid pollution with the same phase of frequency
Power grid, simultaneously as first switch tube 512 and second switch 522 work alternatively, moreover it is possible to further decrease first switch tube
512 and second switch 522 energy consumption so that the PCU Power Conditioning Unit be suitable for high-power ozone generator.
In this embodiment, as shown in Figure 9 and Figure 10, the second signal sampler 7 of PCU Power Conditioning Unit, is also used to sample
The switching current of first switch tube 512 and the switching current of second switch 522.For example, second signal sampler 7 further includes electricity
Current transformer or sampling resistor are illustrated so that second signal sampler 7 includes current transformer as an example below.
First current transformer is connected between the source electrode of first switch tube 512 and the negative polarity end of filter capacitor 7, to adopt
The switching current of sample first switch tube 512；Second current transformer is connected to the source electrode and filter capacitor 7 of second switch 522
Negative polarity end between, to sample the switching current of second switch 522；Controller further includes the second pwm signal adjustment module
106, for calculating the current error between the switching current of first switch tube 512 and the switching current of second switch 522, and
The duty ratio or pulse width of any the second pwm signal of road are adjusted according to the current error, export the 2nd PWM after adjusting all the way
Signal, the second pwm signal and the second pwm signal after the adjusting can eliminate current error, so that first switch tube 512 and second
The current balance type of switching tube 522 prevents any of first switch tube 512 and second switch 522 from losing because electric current is excessive
Weighing apparatus.
In the present embodiment, LLC booster circuit 4 includes LLC antiresonant circuit 43 and high frequency booster 44；Wherein, LLC
Antiresonant circuit 43 includes the first resonant inductance 431 and the concatenated resonant capacitance 432 of the first resonant inductance 431 and resonance electricity
Hold 432 second resonant inductances 433 in parallel；The input side of high frequency booster 44 is in parallel with the second resonant inductance 433.
It is to be appreciated that being with single-phase active pfc circuit, two-phase active PFC circuit respectively in embodiment 3 and embodiment 4
Example is illustrated active PFC circuit 5, and active PFC circuit 5 of the invention can also be multiphase active PFC circuit, due to more
The implementation of phase active PFC circuit is similar to two-phase active PFC circuit, will not repeat them here.
The present invention also provides a kind of power-supply systems, including any of the above-described kind of PCU Power Conditioning Unit.
The present invention also provides a kind of ozone generating-devices, including above-mentioned power-supply system.
The above described is only a preferred embodiment of the present invention, limitation in any form not is done to the present invention, therefore
All contents without departing from technical solution of the present invention, it is made to the above embodiment according to the technical essence of the invention any simply to repair
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of PCU Power Conditioning Unit characterized by comprising
First signal sampler, ozone concentration signal, generator voltage signal and generation for real-time sampling ozone generator
Device current signal；
First controller is connect, to calculate concentration error and first phase difference with first signal sampler；Wherein, described
Difference of the concentration error between the ozone concentration signal and preset ozone reference concentration, the first phase difference is described
The phase difference of generator voltage signal and the generator current signal；
With the sequentially connected inverter circuit of first controller, LLC booster circuit；Wherein, the LLC booster circuit with it is described
Ozone generator coupling；
First controller generates the first pwm signal, so that described inverse according to the concentration error and the first phase difference
Power transformation road adjusts the output to the power of the LLC booster circuit according to the first pwm signal output AC voltage；
The LLC booster circuit generates high-voltage alternating electricity according to the alternating voltage resonance, occurs so that being coupled to the ozone
The voltage and current of device is realized and the ozone occurs with the same phase of frequency to eliminate the concentration error and the first phase difference
The power regulation of device.
2. PCU Power Conditioning Unit as described in claim 1, which is characterized in that first controller includes:
Ozone concentration error calculating module, for calculating between the ozone concentration signal and the preset ozone reference concentration
Difference；
Reference voltage generation module, for according to corresponding between the concentration error and generator reference voltage pre-established
Relationship generates corresponding generator reference voltage；
Reference current generation module, for passing through formula I=Km(V1×V2)/Vrms 2, normalized reference current letter is calculated
Number I, wherein KmFor normalization factor, V1 is generator reference voltage, V2 is generator voltage signal, VrmsFor generator voltage
The virtual value of signal；
First phase difference computing module, for calculating the phase between the reference current signal and the generator current signal
Difference obtains the first phase difference；
First pwm signal output module, for exporting first pwm signal according to the first phase difference.
3. PCU Power Conditioning Unit as claimed in claim 2, which is characterized in that first controller further include:
First determination module, for determining whether the concentration error and the first phase difference meet preset condition, and
Corresponding first pwm signal is saved when meeting the preset condition；Wherein the preset condition is that the concentration error is located in advance
If concentration range and the first phase difference be located in preset phase range；
First adjusts starting module, first in ozone generator starting, first determination module to be saved
Pwm signal is exported to the inverter circuit.
4. PCU Power Conditioning Unit as described in claim 1, which is characterized in that further include:
Active PFC circuit is connected between rectification circuit and the inverter circuit, for the voltage letter after rectifying network voltage
Number be converted to DC voltage；
Filter capacitor, it is in parallel with the output end of the active PFC, for being filtered to by the DC voltage.
5. PCU Power Conditioning Unit as claimed in claim 4, which is characterized in that further include:
Second signal sampler, for sampling the input voltage signal of the active PFC circuit, input current signal and described having
The DC voltage of source pfc circuit conversion；
Second controller is connected between the second signal sampler and the active PFC circuit；
The second controller exports the second pwm signal to the active PFC circuit according to voltage error and second phase difference, into
And adjust the output power of the active PFC circuit；Wherein, the voltage error is that the DC voltage and preset PFC join
Examine the voltage difference between voltage, phase of the second phase difference between the input voltage signal and the input current signal
Potential difference.
6. PCU Power Conditioning Unit as claimed in claim 5, which is characterized in that the second controller includes:
Voltage error computing module, for calculating the electricity between the preset PFC reference voltage and the input voltage signal
Pressure difference；
It normalizes module and obtains normalized parameter for the voltage error to be normalized；
PFC reference current generation module, for passing through formula IPFC=(C × VPFC)/VPo 2, normalized PFC reference is calculated
Current signal IPFC, wherein C is normalized parameter, VPFCFor input voltage signal, VPoFor the virtual value of input voltage signal；
Second phase difference computing module, for calculating the phase between the PFC reference current signal and the input current signal
Potential difference；
Second pwm signal output module, for generating second pwm signal according to the second phase difference, so that described have
Source pfc circuit adjusts the input voltage signal and the input current signal is same with frequency according to second pwm signal
Phase, and then adjust the output to the power of the inverter circuit.
7. PCU Power Conditioning Unit as claimed in claim 6, which is characterized in that the second controller further include:
Second determination module, for determining whether the voltage error is located in preset error range, and in the voltage
When error is located in preset error range, corresponding second pwm signal is saved；
Second adjusts starting module, second in ozone generator starting, second determination module to be saved
Pwm signal is exported to the active PFC circuit.
8. PCU Power Conditioning Unit as claimed in claim 6, which is characterized in that the active PFC power supply is the active PFC electricity of two-phase
Road, the two-phase active PFC circuit includes first switch tube and second switch；
The second signal sampler is connect with the source electrode of the source electrode of the first switch tube and the second switch respectively, with
Sample the switching current of the first switch tube and the switching current of the second switch；
The second controller further includes the second pwm signal adjustment module, is believed for adjusting the 2nd PWM according to current error
Number, to balance the switching current of the first switch tube and the switching current of the second switch；Wherein, the current error
For the current difference of the switching current of the switching current and second switch of the first switch tube.
9. PCU Power Conditioning Unit as described in claim 1, which is characterized in that the inverter circuit is full-bridge topology inversion electricity
Road, half-bridge topology inverter circuit, forward topology inverter circuit or flyback topologies inverter circuit.
10. a kind of power-supply system, which is characterized in that including PCU Power Conditioning Unit such as according to any one of claims 1 to 9.
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| CN110108234B (en) * | 2019-06-03 | 2024-06-07 | 呜啦啦(广州)科技有限公司 | Current type bidirectional bending sensor driving device and automatic return-to-zero initialization method |
| CN110311575B (en) * | 2019-07-22 | 2021-06-15 | 福建龙净环保股份有限公司 | Power supply control method and device, power supply equipment and plasma generation equipment |
| CN110611450A (en) * | 2019-09-17 | 2019-12-24 | 国网山东省电力公司莱芜供电公司 | High-frequency alternating-current output phase-shifting full-bridge inverter |
| CN113007604A (en) * | 2021-03-10 | 2021-06-22 | 无锡比格米智能科技有限公司 | Disinfection monitoring and analyzing system based on Internet of things |
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| JP5169679B2 (en) * | 2008-09-25 | 2013-03-27 | 富士電機株式会社 | Resonant power converter |
| JP5948219B2 (en) * | 2012-10-31 | 2016-07-06 | 東芝三菱電機産業システム株式会社 | Control device for power converter |
| CN104009634A (en) * | 2014-05-05 | 2014-08-27 | 广东工业大学 | Dielectric barrier discharge type ozone generator power supply based on direct-current interlaced boost and alternating-current resonance network |
| CN104038087A (en) * | 2014-05-05 | 2014-09-10 | 广东工业大学 | Dielectric barrier discharge-type ozone generator power supply without intermediate-frequency or high-frequency step-up transformer |
| CN205490104U (en) * | 2016-01-29 | 2016-08-17 | 镇江赛格环保科技有限公司 | Soft switch ozone power supply unit is controlled entirely to PWM |
| CN106787920A (en) * | 2017-01-20 | 2017-05-31 | 东南大学 | There is power supply in a kind of DBD ozone for mixing control |
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