CN209105029U - A kind of control device of continuous mode boost power factor correcting converter - Google Patents
A kind of control device of continuous mode boost power factor correcting converter Download PDFInfo
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- CN209105029U CN209105029U CN201821477379.5U CN201821477379U CN209105029U CN 209105029 U CN209105029 U CN 209105029U CN 201821477379 U CN201821477379 U CN 201821477379U CN 209105029 U CN209105029 U CN 209105029U
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- power factor
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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
Abstract
A kind of control device of continuous mode boost power factor correcting converter, voltage detector and current detector detect the voltage and current signals of power factor correcting converter respectively, and current reference signal is calculated in the first arithmetic element；Digital error amplifier carries out error and amplifies to obtain error amplification signal；High power pulse or low powder pulsed pulse-width control signal is calculated in second arithmetic element；After comparator compares inductive current and current reference signal, selector selection exports effective pulse-width control signal；Digital pulse width modulator exports the switching tube of high level or low level driving power factor correction converter according to effective pulse-width control signal.The Voltage loop and electric current loop of control device decouple, two times of working frequency ripple waves in output voltage will not be introduced in electric current loop, therefore Voltage loop can be designed in wider bandwidth, not only can guarantee lower input current abnormality and higher input power factor, but also can improve system's transient response ability.
Description
Technical field
The utility model relates to power factor correcting converter technical field, especially a kind of continuous mode boost power
The control device of factor correction converter.
Background technique
Power factor correcting converter can reduce power electronic equipment to the harmonic pollution of public electric wire net, have power because
The advantages that number is high, small in size, at low cost.The boost power factor correcting converter for working in inductor current continuous mode has
Inductive current pulsation is small, and input power factor is high, and the current effective value for flowing through switching tube is small, has been widely used for middle and high function
The occasion of rate.The control technology of traditional continuous mode boost power factor correcting converter, such as Average Current Control, peak value electricity
Flow control, Hysteresis control and Nonlinear-carrier Control etc. have the advantages that High Power Factor, but transient response speed is very slow.It passes
The control method principle of the continuous mode boost power factor correcting converter of system are as follows: controller is to output voltage and with reference to letter
Number carrying out error amplifies to obtain voltage error amplified signal, and is multiplied voltage error amplified signal to obtain electric current with input voltage
Reference signal, and sample inductive current and amplify to obtain current controling signal with current reference signal progress error, finally by electric current
Control signal obtains the control signal of switching tube compared with sawtooth carrier wave.Since the output voltage of power factor correcting converter is deposited
In biggish two times of working frequency ripple waves, need the bandwidth Design of voltage error amplifier in 0~20Hz to reduce two times of power frequency lines
Influence of the wave to control loop, and then reduce the input current abnormality of power factor correcting converter, increase power factor, but compared with
System's transient response ability can be greatly reduced in narrow bandwidth.
Utility model content
The purpose of the utility model is to provide a kind of control device of continuous mode boost power factor correcting converter,
It may make boost power factor corrector to keep High Power Factor using the device, while there is cracking transient response speed.
Realize that the technical solution of the utility model aim is as follows:
A kind of control device of continuous mode boost power factor correcting converter, including
In a switch periods start time, the continuous mode boost power factor correcting converter: the first electricity is detected
Pressure detector detects to obtain rectified input voltage vrecAnd input voltage peak value Vm, the first current detector detects to obtain inductance electricity
Flow iL, second voltage detector detects to obtain output voltage Vo, the second current detector, which detects to obtain, exports electric current Io；
Current reference signal is calculated in first arithmetic elementWherein VrefTo be preset with reference to electricity
Pressure；Digital error amplifier is to output voltage VoWith reference voltage VrefError is carried out to amplify to obtain error amplification signal vEA；
The pulse-width control signal of high power pulse is calculated in second arithmetic elementOr low function
The pulse-width control signal of rate pulseWherein, KHFor preset high power pulse coefficient, KLIt is pre-
If low powder pulsed coefficient；
Comparator compares inductive current iLWith current reference signal iref: work as iL<iref, selector selection vPHAs effective arteries and veins
Width control signal vP；Work as iL>iref, selector selection vPLAs effective pulse-width control signal vP；
Digital pulse width modulator includes counter, and the count value of counter is count: as 0≤count≤vP, number
Word pulse width modulator exports high level, works as vP<count<vEA, digital pulse width modulator output low level；Work as count
=vEA, counter O reset；
The high level or low level signal of digital pulse width modulator output are for driving the continuous mode boost function
The switching tube of rate factor correction converter.
Compared with prior art, the utility model has the beneficial effects that
1, the control device relative to traditional CCM boost pfc converter, the voltage of the control device of the utility model
Ring and electric current loop decouple, and two times of working frequency ripple waves in output voltage will not be introduced in electric current loop, therefore Voltage loop can be set
Meter not only can guarantee lower input current abnormality and higher input power factor, but also can improve system in wider bandwidth
Transient response ability.
2, the control device of the utility model is realized using digital control chip, it is only necessary to when each switch periods start
Coherent signal of sampling is carved, sample frequency is greatly reduced, the digital control chip suitable for low cost.
Detailed description of the invention
Fig. 1 is system structure diagram.
Fig. 2 is the high power pulse P of continuous mode boost power factor correcting converter of the present inventionHWith low powder pulsed PL
Selection schematic diagram.
Fig. 3 is the schematic diagram for controlling pulse in circuit shown in Fig. 1 and generating.
Fig. 4 is the variation of the switching frequency and output power of continuous mode boost power factor correcting converter of the present invention
Curve graph.
Fig. 5 is the variation of the switching frequency and input voltage of continuous mode boost power factor correcting converter of the present invention
Curve graph.
Fig. 6 be continuous mode boost power factor correcting converter of the present invention limit under input current time domain
Simulation waveform.
Fig. 7 a is that traditional average ionization ratio continuous mode boost power factor correcting converter is (negative in load variation
Be loaded in the 0.75s moment by 400W transition to 200W) when converter output voltage time-domain-simulation waveform diagram.
Fig. 7 b is that traditional average ionization ratio continuous mode boost power factor correcting converter is (negative in load variation
Be loaded in the 0.75s moment by 400W transition to 200W) when converter input current time-domain-simulation waveform diagram.
Fig. 8 a is that traditional average ionization ratio continuous mode boost power factor correcting converter is (negative in load variation
Be loaded in the 0.75s moment by 200W transition to 400W) when converter output voltage time-domain-simulation waveform diagram.
Fig. 8 b is that traditional average ionization ratio continuous mode boost power factor correcting converter is (negative in load variation
Be loaded in the 0.75s moment by 200W transition to 400W) when converter input current time-domain-simulation waveform diagram.
Fig. 9 a, which is continuous mode boost power factor correcting converter of the present invention, (is supported on the 0.75s moment in load variation
The time-domain-simulation waveform diagram of converter output voltage when by 400W transition to 200W).
Fig. 9 b, which is continuous mode boost power factor correcting converter of the present invention, (is supported on the 0.75s moment in load variation
The time-domain-simulation waveform diagram of converter input current when by 400W transition to 200W).
Figure 10 a is that continuous mode boost power factor correcting converter of the present invention changes (when being supported on 0.75s in load
The time-domain-simulation waveform diagram of converter output voltage when to 400W) is carved by 200W transition.
Figure 10 b is that continuous mode boost power factor correcting converter of the present invention changes (when being supported on 0.75s in load
The time-domain-simulation waveform diagram of converter input current when to 400W) is carved by 200W transition.
Figure 11 a is that traditional average ionization ratio continuous mode boost power factor correcting converter becomes in input voltage
Change (input voltage at the 0.75s moment by 90VAC transition to 110VAC) when converter output voltage time-domain-simulation waveform diagram.
Figure 11 b is that traditional average ionization ratio continuous mode boost power factor correcting converter becomes in input voltage
Change (input voltage at the 0.75s moment by 90VAC transition to 110VAC) when converter input current time-domain-simulation waveform diagram.
Figure 11 c is that traditional average ionization ratio continuous mode boost power factor correcting converter becomes in input voltage
Change (input voltage at the 0.75s moment by 90VAC transition to 110VAC) when converter input voltage time-domain-simulation waveform diagram.
Figure 12 a is that traditional average ionization ratio continuous mode boost power factor correcting converter becomes in input voltage
Change (input voltage at the 0.75s moment by 110VAC transition to 90VAC) when converter output voltage time-domain-simulation waveform diagram.
Figure 12 b is that traditional average ionization ratio continuous mode boost power factor correcting converter becomes in input voltage
Change (input voltage at the 0.75s moment by 110VAC transition to 90VAC) when converter input current time-domain-simulation waveform diagram.
Figure 12 c is that traditional average ionization ratio continuous mode boost power factor correcting converter becomes in input voltage
Change (input voltage at the 0.75s moment by 110VAC transition to 90VAC) when converter input voltage time-domain-simulation waveform diagram.
Figure 13 a is continuous mode boost power factor correcting converter of the present invention, and in input voltage variation, (input voltage exists
The 0.75s moment by 90VAC transition to 110VAC) when converter output voltage time-domain-simulation waveform diagram.
Figure 13 b is continuous mode boost power factor correcting converter of the present invention, and in input voltage variation, (input voltage exists
The 0.75s moment by 90VAC transition to 110VAC) when converter input current time-domain-simulation waveform diagram.
Figure 13 c is continuous mode boost power factor correcting converter of the present invention, and in input voltage variation, (input voltage exists
The 0.75s moment by 90VAC transition to 110VAC) when converter input voltage time-domain-simulation waveform diagram.
Figure 14 a is continuous mode boost power factor correcting converter of the present invention, and in input voltage variation, (input voltage exists
The 0.75s moment by 110VAC transition to 90VAC) when converter output voltage time-domain-simulation waveform diagram.
Figure 14 b is continuous mode boost power factor correcting converter of the present invention, and in input voltage variation, (input voltage exists
The 0.75s moment by 110VAC transition to 90VAC) when converter input current time-domain-simulation waveform diagram.
Figure 14 c is continuous mode boost power factor correcting converter of the present invention, and in input voltage variation, (input voltage exists
The 0.75s moment by 110VAC transition to 90VAC) when converter input voltage time-domain-simulation waveform diagram.
Specific embodiment
Fig. 1 is shown, and the system block diagram of continuous mode boost power factor correcting converter of the present invention, specific practice is:
Controller is divided into electric current loop and Voltage loop.Electric current loop sampled output current Io, rectified input voltage vrec, and detect input voltage
vrecPeak value Vm.According to sampling quantity Io, vrec, VmAfterwards, digitial controller passes through arithmetic element calculating current reference signal iref,
Middle operation rule are as follows:
Wherein, VrefFor voltage reference signal preset in digitial controller.Voltage loop detects input voltage Vo, and with electricity
Pressure reference signal carries out error amplification, obtains error amplification signal vEA, while detecting rectified input voltage vrec.In each switch
Start time in period, controller is according to error amplification signal vEAWith rectified input voltage vrecCalculate the pulsewidth control of high power pulse
Signal v processedPHWith low powder pulsed pulse-width control signal vPL, computation rule is respectively
In formula, KH=1.1 be preset high power pulse coefficient, KL=0.9 is preset low powder pulsed coefficient.Every
A switch periods start time, controller compare inductive current iLWith current reference signal irefSize is to select high power pulse
Pulse-width control signal vPHWith low powder pulsed pulse-width control signal vPL.Fig. 2 shows the pulse-width control signals of high power pulse
vPHWith low powder pulsed pulse-width control signal vPLSelection course, work as iL<irefWhen, controller selects vPHAs current switch
Period effective pulse-width control signal vP, work as iL>irefWhen, controller selects vPLAs the effective pulse-width controlled letter of current switch period
Number vP.Effective pulse-width control signal vPWith error amplification signal vEAInput as digital pulse-width modulator generates control pulse.
Fig. 3 shows the generation process of control pulse, and in each switch periods start time, the counter in digital pulse-width modulator starts
It counts, when count value count meets 0≤count≤vPWhen, digital pulse width modulator exports high level, works as vP<count<
vEAWhen, digital pulse width modulator exports low level, and works as count=vEAWhen, count is reset, into next switch week
Phase.
As shown in Figure 2, voltage error amplified signal vEADetermine high power pulse and low powder pulsed switching frequency, because
This this law digital control method is a kind of frequency control.In this example, input voltage range Vin=90~132VAC；Output power model
Enclose Po=200~400W；Output voltage Vo=400V；Inductance L=1mH；Output capacitance C=470 μ F；Switching frequency range fs=
40~140kHz.According to above-mentioned parameter, Fig. 4 is shown, as output voltage VinWithin the scope of=110VAC, 200~400W of output power,
The relation curve of switching frequency and output power.As shown in Figure 4, continuous mode boost power factor correcting converter of the present invention
Switching frequency increased with the reduction of output power.Fig. 5 is shown, as output power range PoWhen=400W, input voltage 90
Within the scope of~132VAC, the relation curve of switching frequency and input voltage.As shown in Figure 5, continuous mode boost power of the present invention
The switching frequency of factor correction converter is increased with the raising of input voltage.
Time-domain-simulation is carried out with method of the Psim software to this example, it is as a result as follows.
Fig. 6 is input voltage Vin=110VAC, output power PoWhen=400W, continuous mode boost power of the present invention because
The stable state waveform of number correcting converter input current time-domain-simulation.In diagram, input current THD is 3%, and input power factor is
0.998.It follows that when using control method of the present invention, converter be able to maintain higher input power factor with it is lower defeated
Enter electric current THD.
Fig. 7 is input voltage Vin=110VAC, output power PoWhen being jumped by 400W to 200W, traditional average current type current control
The transient waveform of continuous mode boost power factor correcting converter time-domain-simulation processed, wherein Fig. 7 a is output voltage waveforms, figure
7b is input current waveform.In diagram, using traditional average ionization ratio, when output power occurs to be jumped by 400W to 200W
When, system output voltage is raised to 439V, needs 0.35s system that can just return to stable state, output voltage is within the scope of 380~439V
Fluctuation.
Fig. 8 is input voltage Vin=110VAC, output power PoWhen being jumped by 200W to 400W, traditional average current type current control
The transient waveform of continuous mode boost power factor correcting converter time-domain-simulation processed, wherein Fig. 8 a is output voltage waveforms, figure
8b is input current waveform.In diagram, using traditional average ionization ratio, when output power occurs to be jumped by 200W to 400W
When, system output voltage drops to 362V, needs 0.25s system that can just return to stable state, output voltage is within the scope of 362~410V
Fluctuation.
Fig. 9 is input voltage Vin=110VAC, output power PoWhen being jumped by 400W to 200W, continuous mode of the present invention
The transient waveform of boost power factor correcting converter time-domain-simulation, wherein Fig. 9 a is output voltage waveforms, and Fig. 9 b is input electricity
Flow waveform.In diagram, controlled using the present invention, when output power occurs to be jumped by 400W to 200W, system output voltage without
Overshoot, it is only necessary to which half of power frequency period can return to stable state.
Figure 10 is input voltage Vin=110VAC, output power PoWhen being jumped by 200W to 400W, continuous mode of the present invention
The transient waveform of boost power factor correcting converter time-domain-simulation, wherein Figure 10 a is output voltage waveforms, and Figure 10 b is input
Current waveform.In diagram, controlled using the present invention, when output power occurs to be jumped by 200W to 300W, system output voltage
Non-overshoot, it is only necessary to which half of power frequency period can return to stable state.
It can be seen that compared to traditional average current type current continuous mode boost power factor correcting converter, using this hair
Bright when being controlled, converter has good dynamic characteristic when output power changes.
Figure 11 is output power Po=400W, input voltage VinWhen being jumped by 90VAC to 110VAC, traditional average current type current
The transient waveform of continuous mode boost power factor correcting converter time-domain-simulation is controlled, wherein Figure 11 a is output voltage wave
Shape, Figure 11 b are input current waveform, and Figure 11 c is input voltage waveform.In diagram, using traditional average ionization ratio, when defeated
When entering voltage and being jumped by 90VAC to 110VAC, system output voltage is raised to 450V, needs 0.35s system that can just return to stable state,
Output voltage fluctuates within the scope of 380~450V.
Figure 12 is output power Po=400W, input voltage VinWhen being jumped by 110VAC to 90VAC, traditional average current type current
The transient waveform of continuous mode boost power factor correcting converter time-domain-simulation is controlled, wherein Figure 12 a is output voltage wave
Shape, Figure 12 b are input current waveform, and Figure 12 c is input voltage waveform.In diagram, using traditional average ionization ratio, when defeated
When entering voltage and being jumped by 110VAC to 90VAC, system output voltage is raised to 360V, needs 0.3s system that can just return to stable state,
Output voltage fluctuates within the scope of 360~418V.
Figure 13 is output power Po=400W, input voltage VinWhen being jumped by 90VAC to 110VAC, continuous mode of the present invention
The transient waveform of boost power factor correcting converter time-domain-simulation, wherein Figure 13 a is output voltage waveforms, and Figure 13 b is input
Current waveform, Figure 13 c are input voltage waveform.It in diagram, is controlled using the present invention, when input voltage occurs to be jumped by 90VAC
When to 110VAC, system output voltage non-overshoot, it is only necessary to which half of power frequency period can return to stable state.
Figure 14 is output power Po=400W, input voltage VinWhen being jumped by 110VAC to 90VAC, continuous mode of the present invention
The transient waveform of boost power factor correcting converter time-domain-simulation, wherein Figure 14 a is output voltage waveforms, and Figure 14 b is input
Current waveform, Figure 14 c are input voltage waveform.It in diagram, is controlled using the present invention, when input voltage occurs to be jumped by 110VAC
When to 90VAC, system output voltage non-overshoot, it is only necessary to which half of power frequency period can return to stable state.
It can be seen that compared to traditional average current type current continuous mode boost power factor correcting converter, using this hair
Bright when being controlled, converter has good dynamic characteristic when input voltage changes.
Claims (1)
1. a kind of control device of continuous mode boost power factor correcting converter, which is characterized in that be included in a switch
Start time in period detects the continuous mode boost power factor correcting converter:
First voltage detector detects to obtain rectified input voltage vrecAnd input voltage peak value Vm, the first current detector detects
To inductive current iL, second voltage detector detects to obtain output voltage Vo, the second current detector, which detects to obtain, exports electric current
Io；
Current reference signal is calculated in first arithmetic elementWherein VrefFor preset reference voltage；
Digital error amplifier is to output voltage VoWith reference voltage VrefError is carried out to amplify to obtain error amplification signal vEA；
The pulse-width control signal of high power pulse is calculated in second arithmetic elementOr low-power arteries and veins
The pulse-width control signal of punchingWherein, KHFor preset high power pulse coefficient, KLIt is preset
Low powder pulsed coefficient；
Comparator compares inductive current iLWith current reference signal iref: work as iL<iref, selector selection vPHAs effective pulsewidth control
Signal v processedP；Work as iL>iref, selector selection vPLAs effective pulse-width control signal vP；Digital pulse width modulator includes meter
The count value of number device, counter is count: as 0≤count≤vP, digital pulse width modulator export high level, work as vP<
count<vEA, digital pulse width modulator output low level；Work as count=vEA, counter O reset；
Digital pulse width modulator output high level or low level signal for drive the continuous mode boost power because
The switching tube of number correcting converter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821477379.5U CN209105029U (en) | 2018-09-11 | 2018-09-11 | A kind of control device of continuous mode boost power factor correcting converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821477379.5U CN209105029U (en) | 2018-09-11 | 2018-09-11 | A kind of control device of continuous mode boost power factor correcting converter |
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| Publication Number | Publication Date |
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| CN209105029U true CN209105029U (en) | 2019-07-12 |
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| CN201821477379.5U Expired - Fee Related CN209105029U (en) | 2018-09-11 | 2018-09-11 | A kind of control device of continuous mode boost power factor correcting converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923638A (en) * | 2018-09-11 | 2018-11-30 | 西南交通大学 | A kind of control method and device of continuous mode boost power factor correcting converter |
| CN112260539A (en) * | 2020-09-23 | 2021-01-22 | 武汉德普新源科技有限公司 | Output response rapid adjustment method of DC-DC converter |
-
2018
- 2018-09-11 CN CN201821477379.5U patent/CN209105029U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923638A (en) * | 2018-09-11 | 2018-11-30 | 西南交通大学 | A kind of control method and device of continuous mode boost power factor correcting converter |
| CN108923638B (en) * | 2018-09-11 | 2023-10-27 | 西南交通大学 | Control method and device of continuous mode boost power factor correction converter |
| CN112260539A (en) * | 2020-09-23 | 2021-01-22 | 武汉德普新源科技有限公司 | Output response rapid adjustment method of DC-DC converter |
| CN112260539B (en) * | 2020-09-23 | 2021-08-24 | 武汉德普新源科技有限公司 | Output response rapid adjustment method of DC-DC converter |
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