CN109995231A - The digital control method of Boost AC-DC constant voltage source - Google Patents
The digital control method of Boost AC-DC constant voltage source Download PDFInfo
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M1/36—Means for starting or stopping converters
-
- 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
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators with digital control
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
-
- 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
Abstract
The invention discloses the digital control method of Boost AC-DC constant voltage source, it is related to the digital control method of the pfc converter based on Boost topology, belongs to the technical field of power generation, power transformation or distribution.Digital control method is by including that the FPGA of prediction module, PI module, current control module, triangular wave pwm module and soft-start module is realized.Prediction algorithm can completely eliminate ADC sampling time delay and calculate to be influenced caused by duty ratio delay, to improve the dynamic response performance of whole system；Current control module algorithm is simple, Yi Shixian, and input current may be implemented and follow input voltage, to improve the power factor of system；Triangular wave pwm control mode is conducive to obtain the average value of switch periods inductive current, reduces prediction error, ADC sampling precision is improved, to reduce system output voltage ripple；Soft start makes system can be with smooth starting, and system is prevented to occur overshoot phenomenon on startup.
Description
Technical field
The invention discloses the digital control method of Boost AC-DC constant voltage source, it is related to the PFC based on Boost topology
The digital control method of converter belongs to the technical field of power generation, power transformation or distribution.
Background technique
Today's society, with the appearance of the specification in relation to PF index, more and more power supplys use power factor correction
(Power Factor Correction, PFC) technology.It is believed that with the development of the times, people require to get over to the degree of purity of power grid
Come it is higher, it is consequently also that the requirement to power factor is higher and higher, so there are currently no the low power applications occasion of specification also will
Certain requirement is proposed to power factor.
PFC can be divided into active PFC and passive PFC.Passive PFC is to constitute filter network using inductance and capacitor to carry out
Power factor correction.Active PFC is power switch tube in main topology is controlled using special power factor correction circuit logical
It is disconnected, so that input current follows input voltage, achieve the purpose that correct power factor.Active PFC has compared to passive PFC
Have the advantages that PF high, small in size and output are constant and adjustable, so, active PFC is used in power supply more.Boost topological structure
Active PFC become power function due to the advantages that its structure is simple, input current is equal to inductive current, transducer effciency is higher
The active PFC of the most common PFC of rate factor correcting occasion, Boost topological structure can be divided into company according to inductive current conduction mode
Continuous conduction mode (Continuous Conduction Mode, CCM), discontinuous conduction mode (Discontinuous
Conduction Mode, DCM) and critical conduction mode (Critical Conduction Mode, CRM).
Digital control technology has lot of advantages: (1) digit chip has been internally integrated peripheral equipment necessary to control, letter
Circuit is changed；(2) it is easily achieved control algolithm, improves control performance；(3) it is easy to experiment monitoring, maintain easily and upgrades；(4)
Improve the anti-interference and reliability of system.
The performance indicator of Boost AC-DC constant voltage source is particularly important for its system, is directly affected and is
The stability and reliability of system, therefore have very high requirement to the performance indicator of boost AC-DC constant voltage source, it is necessary to meet fast
The requirement such as fast dynamic response, High Power Factor and low ripple.
That there are structures is complex for the PFC such as Average Current Control control program, operand is larger, be not easy to realize, occupy compared with
The defect of more resources.The voltage and current double closed-loop structure that Boost pfc converter is often used has dynamic response performance poor
Feature, the controls such as adaptive algorithm, load current injection, modified feedback linearization control, Vector Rotation method and digital multiplication of voltage control are calculated
Although method can be improved dynamic response but have the defects that algorithm is complicated, be not easy to realize, design cost is high.By building ripple
Circuit goes ripple chip to reduce output voltage ripple to have the defects that system complex, at high cost using special.
The application is intended to make while improving Boost AC-DC constant voltage source power factor by a kind of digital control approach
The system of obtaining quickly dynamically rings and reduces output voltage ripple.
Summary of the invention
Goal of the invention of the invention is the deficiency for above-mentioned background technique, provides Boost AC-DC constant voltage source
Digital control method is rung with the quick dynamic for realizing system while lower cost increase power factor in simple structure
It should be exported with low ripple, solve existing active PFC control program and need to promote dynamic response by complicated structure and algorithm
Performance and the technical issues of reduce output ripple.
The present invention adopts the following technical scheme that for achieving the above object
Boost AC-DC constant voltage source include: it is main topology, three parts of ADC module and digitial controller, it is main topology and
ADC module is depicted as pcb board, and digitial controller is realized by FPGA, and digitial controller specifically includes that prediction module, PI control
Module, current control module, triangular wave pwm module and soft-start module.
ADC module samples input voltage, inductive current, output voltage and the output electric current of Boost pfc converter and will
The signal input prediction module of sampling, prediction module by the input voltage of current switch period, inductive current, output voltage,
The duty ratio of output electric current and current switch period can be predicted to obtain the inductive current and output voltage of next switch periods.
Prediction module is by the output voltage of the next switch periods predicted and the output of current switch period received
Voltage input PI control module, PI control module obtain the control variable of next switch periods based on output voltage reference quantity, use
In control output voltage stabilization in a reference value.
In order to realize that input current follows input voltage, using a kind of current Control Algorithm of simplification, PI is controlled into mould
The inductive current input current control for the next switch periods that the control amount and prediction module for the next switch periods that block obtains obtain
Molding block, can be calculated the duty ratio of next switch periods, so that controlling input current follows input voltage, realize Gao Gong
Rate factor.
Triangular wave pwm module can control according to duty cycle signals and generate corresponding square-wave signal to control Boost
The turn-on and turn-off of pfc converter power switch tube, triangular wave pwm are a kind of switch conduction times are divided into two sections to be placed in out
This control may be implemented by designing counter in control mode at the beginning of the period of pass with ending.
In a period of time that system has just been run, since sample circuit does not work normally also, the data of acquisition can not be accurate
Actual voltage and current information is embodied, so needing to add a soft-start module as the buffering before Isobarically Control, works as system
It powers on after stablizing and meeting the condition of Isobarically Control, Isobarically Control could be converted to from soft start working condition.
The present invention by adopting the above technical scheme, has the advantages that
(1) digital control method that the application proposes is in the case where considering current duty cycle lower switch pipe turn-on and turn-off state
It is predicted after output voltage increment under inductive current increment and current period duty ratio lower switch pipe turn-on and turn-off state defeated
Out voltage and inductive current next switch periods numerical value, after carrying out PI adjusting to the predicted value of inductive current and output voltage
The control variable of next switch periods is obtained, the control variable according to next switch periods predicts next switch periods in turn
Duty cycle signals obtain showing for current switch period duty ratio according to current switch period sampled voltage and electric current compared to needs
For having duty ratio calculation method, the digital control method that the application proposes can completely eliminate ADC sampling time delay and calculating accounts for
Sky caused by delay than influencing, to improve the dynamic response performance of whole system, compared to Average Current Control algorithm,
Realize input current with a kind of relatively simple digital control method and follow input voltage, thus improve the power of system because
Number.
(2) triangular wave pwm control mode is conducive to obtain the average value of switch periods inductive current, reduces prediction error,
ADC sampling precision is improved, to reduce system output voltage ripple.
(3) the application also proposed a kind of digital soft start method, and the soft start compared to analog form controls, and number is soft
Starting does not need to add additional circuit, improves system availability, so that system can be with smooth starting, and system is prevented to exist
Occurs overshoot phenomenon when starting.
Detailed description of the invention
Fig. 1 is the system block diagram of Boost type AC-DC constant voltage source.
Fig. 2 is the schematic diagram that delay is eliminated in prediction.
Fig. 3 is the algorithm flow chart of prediction module.
Fig. 4 is the algorithm flow chart of PI control module.
Fig. 5 is the schematic diagram of current following voltage.
Fig. 6 is the algorithm flow chart of current control module.
Fig. 7 is the schematic diagram of triangular wave pwm module control mode.
Fig. 8 is triangular wave pwm flow chart.
Fig. 9 is the operation schematic diagram of soft-start module.
Specific embodiment
The technical solution of invention is described in detail with reference to the accompanying drawing.
The numerical control system of Boost type AC-DC constant voltage source disclosed by the invention is as shown in Figure 1, mainly include three
Part, main topological circuit (Boost pfc converter), ADC module and digitial controller.Power used in main topological circuit
Switching tube needs to choose suitable chip, and inductance capacitance uses sorting device, so that main topology design is become independent by pcb board
Module；It needs to select suitable ADC chip in design, needs 4 pieces altogether, it is equally individually designed using pcb board；Digitial controller master
It to include prediction module, PI control module, current control module, triangular wave pwm module and soft-start module, digitial controller portion
Point modules Verilog language description and finally download in FPGA development board.
In a switch periods, there is following formula respectively to inductance and capacitor:
The processing of discretization after first being integrated respectively in a switch periods to formula (1), (2), if it is known that k-th
Input voltage, output voltage, inductive current and output electric current (initial time) of switch periods, so that it may predict next open
The inductive current and output voltage (initial time) in period are closed, prediction rule is described as follows:
In order to reduce error, with inductive current average value iav[k] replaces iL[k], therefore:
Prediction algorithm can eliminate ADC sampling and calculate the influence of duty ratio delay, to improve dynamic response performance, have
Body process is referring to Fig. 2, wherein d is actual duty cycle, and dp is is obtained after prediction algorithm, PI algorithm, current Control Algorithm
Prediction duty ratio, it compared to sampling instant evening two delay, respectively ADC sampling time delay and calculate duty ratio delay, kth
The prediction duty ratio that a switch periods calculate is the actual duty cycle of+1 switch periods of kth.
The algorithm flow of prediction module is as shown in figure 3, firstly, the data that ADC is sampled are converted into symbolic number, then,
Judge whether soft start Isobarically Control signal soft_start is 0, keeps soft start for 0, predicted for 1, prediction knot
Fruit exports after amplitude limiting processing.
The recurrence Relation of digital PI controller are as follows:
U (k)=u (k-1)+ae (k)-be (k-1) (6),
Wherein, a=KP+KiT, b=KP, KP=KPI, Ki=KPI/TPI, KPIFor proportionality constant, TPIFor time constant, u (k-
1), u (k) is respectively the control variable of -1 switch periods of kth, k-th switch periods, and e (k-1), e (k) are respectively kth -1
The difference of switch periods, the output voltage of k-th switch periods and output voltage reference value, KPFor than column coefficient, KiFor integration system
Number, T is switch periods.
The transmission function of PI controller are as follows:
Remove the open-loop transfer function of PI controller for whole system are as follows:
Wherein, inductive current sampling resistance is Rs, parameter Mg=Vgm/Vo.To GVAnd TVThere is following formula:
In order to compensate for 1+sTVThe pole at place, takes TPI=TV, proportionality constant has following formula:
Higher bandwidth can obtain better dynamic property, but this will increase VmRipple, and then increase input electricity
The aberration rate of stream, bandwidth and current total harmonic distortion rate meet following formula:
According to the requirement of total harmonic distortion factor, suitable f is chosenBW, K can be obtained by bringing formula (11) intoPI, then can obtain KP, Ki。
PI algorithm flow is as shown in figure 4, firstly, the output voltage and prediction module of input current switch period obtain down
Then the output voltage of a switch periods judges whether soft start Isobarically Control signal soft_start is 0, keep soft for 0
Starting carries out PI operation, the control variable u3 of one switch periods of final output for 1.
The purpose of current control module is that input current is made to follow input voltage, referring to Fig. 5.If current following voltage,
Then have:
Vin=iLRe(13),
The main topology work of converter is in CCM mode, so having:
Vin=V0(1-d) (14),
It can be obtained by two formulas above:
iLRe=V0(1-d) (15),
By vm=(V0*Rs)/Re, it can obtain:
RsIt is inductive current sampling resistance, vmIt is the output of voltage control loop, that is, next the opening of PI control module prediction
The control variable in period is closed, above formula can be corrected in Digital Discrete domain are as follows:
The process of current Control Algorithm is as shown in fig. 6, firstly, the i that input prediction module obtainsL[k+1] and PI control mould
The V that block obtainsm[k+1], then, bringing duty ratio calculation formula into can be obtained d [k+1].
Triangular wave pwm control mode is as shown in fig. 7, Ton is switching signal, iL[t] is inductance electricity in the single switch period
Waveform is flowed, in n-th of switch periods Ts, power tube is kept it turning at switch periods initial time, that is, t=t1 moment；In t=
In t1~t2 period, inductive current withPropradation is in for slope；Power tube Q is turned off and one at the t=t2 moment
Directly remain to the t=t4 moment；Within t=t2~t4 period, inductive current withDecline state is in for slope；
Power tube Q is again turned at the t=t4 moment and is always maintained at t=t5 moment i.e. this switch periods finish time；T=t4~
In the t period, inductive current withPropradation is in for slope；When arriving moment t=t5 from next switch periods Ts
Inductive current has been carved to repeat the above process again, in the single switch period before and after power tube two sections unlatching times be it is equal,
The rate of rise is consistent, and can obtain h [t] and i by geometric knowledgeLThe intersection point moment of [t], i.e. t3 moment are entire switch periods
Intermediate time.In the switch periods, f [t], h [t] and iL[t] respectively integrates time t, its knot known to geometric knowledge
Fruit is equal, so f [t] is average value of the inductive current in entire switch periods, and f [t] is inductive current iL[t] is being switched
The value of period intermediate time t3 is i after digitlizationav[k] replaces the i in formula (4) with itL[k] obtains formula (5), this
The sampling precision of inductive current can be improved in sample, reduces output voltage ripple, reduces prediction algorithm error.
Triangular wave pwm module generates the process of square wave as shown in figure 8, firstly, input reset signal rst, soft start constant pressure
It controls signal soft_start and duty cycle signals d, rst reset signal is effective, then system starts judge soft_
Whether start is 0, enters soft start for 0 system, enters Isobarically Control mode for 1 system, presses three by duty cycle signals d
The mode of angle wave PWM, which controls, generates Ton.
In a period of time that system has just been run, since sample circuit does not work normally also, the data of acquisition can not be accurate
Actual voltage and current information is embodied, so needing to add a soft starting circuit as the buffering before Isobarically Control, works as system
It powers on after stablizing and meeting the condition of Isobarically Control, Isobarically Control mode could be converted to from soft start working condition.Compared to
The soft start of analog form controls, and the soft start of digital form improves the benefit of system in the case where no addition additional circuit
With rate.
The course of work of soft-start module is as shown in figure 9, its output voltage signal for mainly sampling ADC is transmitted to
In controller, and in the more collected output voltage signal of each switch periods and output voltage reference value, if output voltage
Collection value is less than reference voltage, and soft start Isobarically Control signal soft_start remains 0, if output voltage collection value is big
Then setting soft start Isobarically Control signal soft_start in reference voltage is 1.When soft_start is 0, soft start duty ratio
It controls signal on_ref and adds 1 every 100 switch periods, at this point, switching signal Ton is controlled by on_ref, on_ref is kept not
Straightening soft_start jump is 1, and system enters constant pressure operating mode when soft_start is 1, and switching signal Ton is accounted for
Sky is controlled than signal d.
Claims (8)
- The digital control method of 1.Boost AC-DC constant voltage source, which is characterized in that including following four link,Predict link: according to input voltage, inductive current, the output voltage, output of the current switch period from main topology acquisition Switching tube in electric current and main topology obtains next switch in Digital Discrete domain interior prediction in the duty ratio of current switch period The inductive current and output voltage in period,PI governing loop: it is adjusted according to the difference that current switch period and next switch periods output voltage deviate given value next The control variables of switch periods so that the output voltage stabilization of main topology in given value,Current control link: determine that master opens up according to the inductive current of next switch periods and the control variable of next switch periods Switching tube in flutterring next switch periods duty ratio so that inductive current tracks input voltage,Triangular wave pwm generates link: being generated in main topology and is opened according to the duty ratio of the next switch periods of switching tube in main topology Pipe is closed in the Continuity signal of next switch periods.
- 2. the digital control method of Boost AC-DC constant voltage source according to claim 1, which is characterized in that prediction link The inductive current and output voltage of next switch periods are predicted using following prediction rule,Wherein, iL[k]、iL[k+1] is respectively the inductive current of+1 k-th of switch periods, kth switch periods, Vin[k] is kth The input voltage of a switch periods, Vo[k]、Vo[k+1] is respectively the output electricity of+1 k-th of switch periods, kth switch periods It presses, the parameter of topological inductance and capacitor based on L, C difference, d is actual duty cycle, TsFor switch periods duration.
- 3. the digital control method of Boost AC-DC constant voltage source according to claim 1, which is characterized in that PI adjusts ring Section uses recurrence relation: u (k)=u (k-1)+ae (k)-be (k-1) adjusts the control variable of next switch periods, wherein u (k- 1), u (k) is respectively the control variable of -1 switch periods of kth, k-th switch periods, and e (k-1), e (k) are respectively kth -1 The difference of switch periods, the output voltage of k-th switch periods and output voltage reference value, a=KP+KiT, b=KP, KPFor than Column coefficient, KiFor integral coefficient, T is switch periods.
- 4. the digital control method of Boost AC-DC constant voltage source according to claim 1, which is characterized in that current control Duty ratio of the switching tube in main topology that link determines in next switch periods are as follows:D [k] is Duty ratio of the switching tube in k-th of switch periods in main topology, RsFor the sampling resistor of inductive current, Vm[k] is voltage control Output of the ring in k-th of switch periods, iL[k] is the inductive current of k-th of switch periods.
- 5. the digital control method of Boost AC-DC constant voltage source according to claim 1, which is characterized in that the number Control method further includes soft startup tache, and the output of current switch period is compared in each switch periods in initial power-on stage Voltage and given value export soft start duty cycle control signal when the output voltage of current switch period is less than given value to master Switching tube and soft start duty cycle control signal in topology add 1 every N number of switch periods, and in the output of current switch period Voltage switches to constant pressure operating mode when being more than given value, the Continuity signal of switching tube is controlled by current control link in main topology Output quantity, the value of N is greater than the periodicity that sample circuit works normally.
- 6. the digital control method of Boost AC-DC constant voltage source according to claim 1, which is characterized in that prediction link According to the input voltage of the current switch period from main topology acquisition, output voltage, output electric current and current switch period electricity The average value of inducing current, it is main topology in switching tube current switch period duty ratio in the case where Digital Discrete domain interior prediction obtains The inductive current and output voltage of a switch periods.
- 7. the digital control method of Boost AC-DC constant voltage source according to claim 6, which is characterized in that prediction link The inductive current and output voltage of next switch periods are predicted using following prediction rule,Wherein, iL[k]、iL[k+1] is respectively the inductive current of+1 k-th of switch periods, kth switch periods, iav[k] is electricity Average value of the inducing current in k-th of switch periods, Vin[k] is the input voltage of k-th of switch periods, Vo[k]、Vo[k+1] point Not Wei k-th of switch periods ,+1 switch periods of kth output voltage, L, C respectively based on topological inductance and capacitor parameter, d For actual duty cycle, TSFor switch periods duration.
- 8. the digital control method of Boost AC-DC constant voltage source according to claim 6, which is characterized in that triangular wave pwm It generates link and generates in main topology switching tube in the Continuity signal of next switch periods method particularly includes: will be switched in main topology The turn-on time of pipe is divided into two sections of [t1,t2]、[t4,t5] after be respectively placed at the beginning of switch periods with ending so that switch periods Intermediate time t3Inductive current be average value of the inductive current in entire switch periods,t5=t1+Ts, t1、t2Respectively be placed in switch periods it The initial time and end time of first turn-on time section, t4、t5Respectively it is placed in rising for the turn-on time section of switch periods ending Begin moment and end time, d [n] the accounting in n-th switch periods that be switching tube in the main topology that current control module obtains Empty ratio, TsFor switch periods duration.
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| CN201910275926.4A CN109995231B (en) | 2019-04-08 | 2019-04-08 | Digital control method of Boost AC-DC constant voltage power supply |
| PCT/CN2019/105175 WO2020206928A1 (en) | 2019-04-08 | 2019-09-10 | Digital control method of boost ac-dc constant voltage power supply |
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| CN201910275926.4A CN109995231B (en) | 2019-04-08 | 2019-04-08 | Digital control method of Boost AC-DC constant voltage power supply |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110971117A (en) * | 2019-12-23 | 2020-04-07 | 东莞市石龙富华电子有限公司 | Intelligent multi-mode power factor correction method and circuit for switching power supply |
| CN111628643A (en) * | 2020-05-20 | 2020-09-04 | 上海工程技术大学 | Method for predicting current sampling in PFC control |
| CN111740572A (en) * | 2020-08-10 | 2020-10-02 | 深圳第三代半导体研究院 | Peak current mode controller with double-loop control structure and switching power supply |
| WO2020206928A1 (en) * | 2019-04-08 | 2020-10-15 | 东南大学 | Digital control method of boost ac-dc constant voltage power supply |
| CN112713759A (en) * | 2020-12-23 | 2021-04-27 | 石家庄通合电子科技股份有限公司 | Control method and structure for reducing power frequency ripple of alternating current power supply direct current output power supply |
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| CN109995231B (en) * | 2019-04-08 | 2020-06-16 | 东南大学 | Digital control method of Boost AC-DC constant voltage power supply |
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| CN103051186A (en) * | 2012-12-29 | 2013-04-17 | 东南大学 | Fast transient response digital switch converter and control method of fast transient response digital switch converter |
| CN103078530A (en) * | 2012-12-29 | 2013-05-01 | 东南大学 | Digital power factor converter with fast transient response function and control method of digital power factor converter |
| CN107979278A (en) * | 2016-10-24 | 2018-05-01 | 南京理工大学 | A kind of width load step-up type power factor correcting converter |
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| WO2020206928A1 (en) * | 2019-04-08 | 2020-10-15 | 东南大学 | Digital control method of boost ac-dc constant voltage power supply |
| CN110933815A (en) * | 2019-12-03 | 2020-03-27 | 哈尔滨理工大学 | LED driving power supply and digital control method thereof |
| CN110971117A (en) * | 2019-12-23 | 2020-04-07 | 东莞市石龙富华电子有限公司 | Intelligent multi-mode power factor correction method and circuit for switching power supply |
| CN111628643A (en) * | 2020-05-20 | 2020-09-04 | 上海工程技术大学 | Method for predicting current sampling in PFC control |
| CN111628643B (en) * | 2020-05-20 | 2021-07-09 | 上海工程技术大学 | Method for predicting current sampling in PFC control |
| CN111740572A (en) * | 2020-08-10 | 2020-10-02 | 深圳第三代半导体研究院 | Peak current mode controller with double-loop control structure and switching power supply |
| CN112713759A (en) * | 2020-12-23 | 2021-04-27 | 石家庄通合电子科技股份有限公司 | Control method and structure for reducing power frequency ripple of alternating current power supply direct current output power supply |
| CN113541452A (en) * | 2021-06-10 | 2021-10-22 | 南京理工大学 | Digital single-cycle controller and method for power factor correction circuit with coupled inductor |
| CN113410989A (en) * | 2021-07-13 | 2021-09-17 | 上海艾为电子技术股份有限公司 | Digital booster circuit, control method thereof and electronic equipment |
| CN114157145A (en) * | 2021-11-30 | 2022-03-08 | 东南大学 | Inductive current estimation method of DC-DC switching power supply |
| CN114157145B (en) * | 2021-11-30 | 2023-03-14 | 东南大学 | Inductive current estimation method of DC-DC switching power supply |
| CN114448023A (en) * | 2021-12-24 | 2022-05-06 | 致瞻科技(上海)有限公司 | Electric energy converter control system and hydrogen fuel cell system |
Also Published As
| Publication number | Publication date |
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| WO2020206928A1 (en) | 2020-10-15 |
| CN109995231B (en) | 2020-06-16 |
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