CN102136797A - Modulating method for noninverting Buck-Boost power inverter - Google Patents
Modulating method for noninverting Buck-Boost power inverter Download PDFInfo
- Publication number
- CN102136797A CN102136797A CN2010102759121A CN201010275912A CN102136797A CN 102136797 A CN102136797 A CN 102136797A CN 2010102759121 A CN2010102759121 A CN 2010102759121A CN 201010275912 A CN201010275912 A CN 201010275912A CN 102136797 A CN102136797 A CN 102136797A
- Authority
- CN
- China
- Prior art keywords
- buck
- boost
- cont
- max
- controlled variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a modulating method for a noninverting Buck-Boost power inverter. With the modulating method, the power inverter can carry out switching work among a Buck working mode, a Buck-Boost working mode and a Boost working mode according to control amount, and the power consumption in the energy conversion process can be reduced as much as possible by adopting the combination of PWM (Pulse-Width Modulation) control and PFM (Pulse Frequency Modulation) control; meanwhile, an upper pipe bootstrap capacitance charging pulse can be generated, the traditional drive integrated chip can be conveniently adopted to drive upper and lower bridge arms, cost improvement and the complexity of design can be prevented by adopting an isolating drive power supply system, and thereby the system structure is simple.
Description
Technical field
The present invention relates to a kind of modulator approach that is used for noninverting Buck-Boost power inverter, can make this power inverter be operated in Buck mode of operation, Buck-Boost mode of operation, three kinds of patterns of Boost mode of operation by this modulator approach.
Background technology
In some power management systems, in order to improve the applicability of power inverter, the often required power converter work of can either boosting again can step-down work.In mobile electronic device, because the variation of cell voltage, this output voltage may less than, be equal to, or greater than cell voltage, under different cell voltage situations, can export constant output voltage so that the equipment operate as normal in order to satisfy, just need the variable power device of buck function; In cascade photovoltaic module power converter system, when carrying out MPPT maximum power point tracking, satisfy the balance of voltage of output again, adopt power inverter topology can improve the adaptive capacity of system with buck function.These requirements can realize by noninverting Buck-Boost power inverter.The modulator approach of traditional noninverting Buck-Boost power inverter has: Figure 5 shows that traditional noninverting Buck-Boost power inverter modulator approach, in each control cycle, conducting simultaneously of controlled tr tube on the diagonal or shutoff simultaneously, this method four controlled tr tubes in each switch periods are worked simultaneously, switching loss is big, shortcomings such as the inductive current ripple is big, and efficient is lower.Figure 6 shows that the modulator approach of traditional sawtooth waveforms with 180 ° of phase differences of two row as carrier wave, Figure 7 shows that the modulator approach of traditional triangular wave with two row same-phase different DC biased as carrier wave, these two kinds of modulator approaches are in the Buck-Boost mode of operation, still carry out the PWM modulation, because when different mode switches, very narrow pulsewidth can appear, this is difficult to realize in actual hardware, can cause the firm conducting of controlled tr tube to be turned off again, be operated in the linear amplification district, increase switching loss, reduced the efficient of system.Figure 8 shows that with single-row sawtooth waveforms to be the differential modulation method of carrier wave, this modulator approach adopts extra Delta-Sigma algorithm to produce a binary sequence, with the effect of the very little pulse-width modulation of the next equivalence of the pulse train of deciding pulsewidth, but the specific implementation more complicated.
Above-mentioned several modulation system exists a same problem, be exactly not consider in the real system, when driving in the same brachium pontis up and down controlled tr tube, because the source electrode (MOSFET) or the emitter-base bandgap grading (IGBT) of switching tube are in different current potentials, so just need adopt independently driving power or employing to have the chip for driving of bootstrapping function to come the driving switch pipe.Consider the design complexities that adopts the drive power supply to bring to system, the general employing has the chip for driving of bootstrapping function to come the driving switch pipe.Under the situation of last pipe range time conducting, because the chip for driving of bootstrapping function needs to give at regular intervals the driving charging bootstrap capacitor of last pipe just can guarantee to go up pipe can normally, this just needs modulator approach can produce a charging pulse, and pipe conducting a period of time under regular the making is so that give the charging bootstrap capacitor of last pipe.
Summary of the invention
In order to solve the above-mentioned shortcoming and defect part of existing control method, the invention provides a kind of modulation system that is used for noninverting Buck-Boost power inverter, this modulator approach can make power inverter switch operating between Buck mode of operation, Buck-Boost mode of operation, three kinds of patterns of Boost mode of operation according to controlled quentity controlled variable, adopt PWM control and PFM control to combine, reduce power loss in the energy conversion process as much as possible; Can produce simultaneously required the going up of Buck mode of operation or Boost mode of operation and manage the charging bootstrap capacitor pulse, the existing driving integrated chip of convenient employing drives upper and lower bridge arm, avoid adopting the isolation drive power supply to increase the complexity of cost and design, thereby make system configuration simple to system.
According to the inventive concept of appeal, the present invention adopts following technical proposals:
A kind of modulator approach that is used for noninverting Buck-Boost power inverter, carry out following steps successively:
(1) carries out voltage-regulation program, the controlled quentity controlled variable V that calculates
Cont, controlled quentity controlled variable V wherein
ContBe duty cycle signals, span is (0,2);
(2) judge controlled quentity controlled variable V
ContAnd V
Buck_minSize, if controlled quentity controlled variable V
Cont＜V
Buck_min, then limit controlled quentity controlled variable V
Cont=V
Buck_min, otherwise carry out (3), wherein V
Buck_minBuck mode of operation minimum duty cycle for being provided with generally is made as about 0.1;
(3) judge controlled quentity controlled variable V
ContAnd V
Boost_maxIf+1 size is controlled quentity controlled variable V
Cont＞V
Boost_max+ 1, then limit controlled quentity controlled variable V
Cont=V
Boost_max+ 1, otherwise carry out (4), wherein V
Boost_maxBoost mode of operation maximum duty cycle for being provided with generally is made as about 0.6;
(4) judge controlled quentity controlled variable V
ContAnd V
Buck_maxSize, if controlled quentity controlled variable V
Cont＞V
Buck_max, then carry out (5), otherwise carry out (6), wherein V
Buck_maxBe the Buck mode of operation maximum duty cycle that is provided with, and V
Buck_max＞V
Buck_min, generally be made as about 0.96;
(5) judge controlled quentity controlled variable V
ContAnd V
Boost_minIf+1 size is controlled quentity controlled variable V
Cont＜V
Boost_min+ 1, then carry out (7), otherwise carry out (8), wherein V
Boost_minBe the Boost mode of operation minimum duty cycle that is provided with, and V
Boost_max＞V
Boost_min, generally be made as about 0.04;
(6) carry out the pulse of Buck mode of operation and generate subprogram, finish the back and carry out (9);
(7) carry out the pulse of Buck-Boost mode of operation and generate subprogram, finish the back and carry out (9);
(8) carry out the pulse of Boost mode of operation and generate subprogram, finish the back and carry out (9);
(9) return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the voltage-regulation program in (1) is carried out following steps:
(1.1) sampling and outputting voltage signal V
Out
(1.2) according to the reference output voltage signal V that sets
RefThe actual voltage signal V that obtains with sampling
OutCalculation deviation V
Err=V
Ref-V
Out
(1.3) calculate controlled quentity controlled variable V through pi regulator
Cont
(1.4) return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the Buck mode of operation pulse in (6) generates subprogram and carries out following steps:
(6.1) be provided with that PWM count cycle value is 1 times of switch periods in the Buck module, comparison value is controlled quentity controlled variable V
Cont
(6.2) be provided with that PWM count cycle value is N times of switch periods in the Boost module, comparison value is V
Boost_min, wherein the value of N is relevant with selected controlled tr tube and capacity of bootstrap capacitor etc., is prerequisite to guarantee that the charge cycle inner upper tube can be kept normally when being provided with, and generally can be made as between 6 to 16;
(6.3) recover on-the-spot, return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the Buck-Boost mode of operation pulse in (7) generates subprogram and carries out following steps:
(7.1) with interval (V
Buck_max, 1+V
Boost_min) be divided into the m equal portions, represent to m is interval with the 1st interval successively from small to large, according to controlled quentity controlled variable V
ContResiding interval value is provided with that PWM count cycle value is x times of switch periods in the Buck module, and comparison value is V
Buck_max, wherein x is V
ContResiding interval value, the value of m can be according to (V
Buck_max, 1+V
Boost_min) interval size sets, and generally can be made as 8 or 16;
(7.2) be provided with that PWM count cycle value is (m-x) times switch periods in the Boost module, comparison value is V
Boost_min
(7.3) recover on-the-spot, return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the Boost mode of operation pulse in (8) generates subprogram and carries out following steps:
(8.1) PWM count cycle value in the Buck module is set and is N switch periods doubly, comparison value is V
Buck_max, wherein the value of N is relevant with selected controlled tr tube and capacity of bootstrap capacitor etc., is prerequisite to guarantee that the charge cycle inner upper tube can be kept normally when being provided with, and generally can be made as between 6 to 16;
(8.2) be provided with that PWM count cycle value is 1 times of switch periods in the Boost module, comparison value is (V
Cont-1);
(8.3) recover on-the-spot, return.
By above-mentioned control mode, can realize a kind of power inverter efficiently: when input voltage is operated in the Buck mode of operation during greater than output voltage, when input voltage is operated in the Boost mode of operation during less than output voltage, when being approximately equal to output voltage, input voltage is operated in the Buck-Boost mode of operation.In each on off state switches, have only two controlled tr tube actions, and when the Buck-Boost mode of operation, replace the PWM modulation, when avoiding producing little pulsewidth, realized the smooth change of voltage change ratio with the PFM modulation.Can generate simultaneously the required charging pulse signal of boostrap circuit again, the existing driving integrated chip of convenient employing drives upper and lower bridge arm, avoid adopting the isolation drive power supply to increase the complexity of cost and design to system, thereby make system configuration simple, save device and cost, the implement device miniaturization improves system reliability, simultaneously can reduce power loss in the energy conversion process again, improve overall system efficiency.
Description of drawings
Fig. 1 is a modulator approach program flow diagram of the present invention.
Fig. 2 is that Buck mode of operation pulse of the present invention generates subroutine flow chart.
Fig. 3 is that Buck-Boost mode pulse of the present invention generates subroutine flow chart.
Fig. 4 is that Boost mode of operation pulse of the present invention generates subroutine flow chart.
Fig. 5 is traditional noninverting Buck-Boost power inverter modulator approach schematic diagram.
Fig. 6 is the modulator approach schematic diagram of traditional sawtooth waveforms with 180 ° of phase differences of two row as carrier wave.
Fig. 7 is the modulator approach schematic diagram of traditional triangular wave with two row same-phase different DC biased as carrier wave.
Fig. 8 be traditional be the differential modulation method schematic diagram of carrier wave with single-row sawtooth waveforms.
Fig. 9 is noninverting Buck-Boost power inverter control system figure of the present invention.
Figure 10 is that Buck mode of operation pulse of the present invention generates the modulation system schematic diagram.
Figure 11 is that Buck-Boost mode of operation pulse of the present invention generates the modulator approach schematic diagram.
Figure 12 is that Boost mode of operation pulse of the present invention generates the modulator approach schematic diagram.
Embodiment
Details are as follows for the preferred embodiments of the present invention:
A kind of modulator approach that is used for noninverting Buck-Boost power inverter of the present invention, can make power inverter switch operating between Buck mode of operation, Buck-Boost mode of operation, three kinds of patterns of Boost mode of operation: in the Buck mode of operation, noninverting Buck-Boost power inverter can access an output voltage less than input voltage; In the Buck-Boost mode of operation, noninverting Buck-Boost power inverter can access an output voltage and be approximately equal to input voltage; In the Boost mode of operation, noninverting Buck-Boost power inverter can access an output voltage greater than input voltage.Switching between the different working modes is selected by the controlled quentity controlled variable that adjuster calculates.
A kind of modulator approach that is used for noninverting Buck-Boost power inverter, carry out following steps successively:
(1) carries out voltage-regulation program, the controlled quentity controlled variable V that calculates
Cont, controlled quentity controlled variable V wherein
ContBe duty cycle signals, span is (0,2);
(2) judge controlled quentity controlled variable V
ContAnd V
Buck_minSize, if controlled quentity controlled variable V
Cont＜V
Buck_min, then limit controlled quentity controlled variable V
Cont=V
Buck_min, otherwise carry out (3), wherein V
Buck_minBuck mode of operation minimum duty cycle for being provided with generally is made as about 0.1;
(3) judge controlled quentity controlled variable V
ContAnd V
Boost_maxIf+1 size is controlled quentity controlled variable V
Cont＞V
Boost_max+ 1, then limit controlled quentity controlled variable V
Cont=V
Boost_max+ 1, otherwise carry out (4), wherein V
Boost_maxBoost mode of operation maximum duty cycle for being provided with generally is made as about 0.6;
(4) judge controlled quentity controlled variable V
ContAnd V
Buck_maxSize, if controlled quentity controlled variable V
Cont＞V
Buck_max, then carry out (5), otherwise carry out (6), wherein V
Buck_maxBe the Buck mode of operation maximum duty cycle that is provided with, and V
Buck_max＞V
Buck_min, generally be made as about 0.96;
(5) judge controlled quentity controlled variable V
ContAnd V
Boost_minIf+1 size is controlled quentity controlled variable V
Cont＜V
Boost_min+ 1, then carry out (7), otherwise carry out (8), wherein V
Boost_minBe the Boost mode of operation minimum duty cycle that is provided with, and V
Boost_max＞V
Boost_min, generally be made as about 0.04;
(6) carry out the pulse of Buck mode of operation and generate subprogram, finish the back and carry out (9);
(7) carry out the pulse of Buck-Boost mode of operation and generate subprogram, finish the back and carry out (9);
(8) carry out the pulse of Boost mode of operation and generate subprogram, finish the back and carry out (9);
(9): return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the voltage-regulation program in (1) is carried out following steps:
(1.1) sampling and outputting voltage signal V
Out
(1.2) according to the reference output voltage signal V that sets
RefThe actual voltage signal V that obtains with sampling
OutCalculation deviation V
Err=V
Ref-V
Out
(1.3) calculate controlled quentity controlled variable V through pi regulator
Cont
(1.4) return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the Buck mode of operation pulse in (6) generates subprogram and carries out following steps:
(6.1) be provided with that PWM count cycle value is 1 times of switch periods in the Buck module, comparison value is controlled quentity controlled variable V
Cont
(6.2) be provided with that PWM count cycle value is N times of switch periods in the Boost module, comparison value is V
Boost_min, wherein the value of N is relevant with selected controlled tr tube and capacity of bootstrap capacitor etc., is prerequisite to guarantee that the charge cycle inner upper tube can be kept normally when being provided with, and generally can be made as between 6 to 16;
(6.3) recover on-the-spot, return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the Buck-Boost mode of operation pulse in (7) generates subprogram and carries out following steps:
(7.1) with interval (V
Buck_max, 1+V
Boost_min) be divided into the m equal portions, represent to m is interval with the 1st interval successively from small to large, according to controlled quentity controlled variable V
ContResiding interval value is provided with that PWM count cycle value is x times of switch periods in the Buck module, and comparison value is V
Buck_max, wherein x is V
ContResiding interval value, the value of m can be according to (V
Buck_max, 1+V
Boost_min) interval size sets, and generally can be made as 8 or 16;
(7.2) be provided with that PWM count cycle value is (m-x) times switch periods in the Boost module, comparison value is V
Boost_min
(7.3) recover on-the-spot, return.
Above-mentioned a kind of modulator approach that is used for noninverting Buck-Boost power inverter, wherein the Boost mode of operation pulse in (8) generates subprogram and carries out following steps:
(8.1) PWM count cycle value in the Buck module is set and is N switch periods doubly, comparison value is V
Buck_max, wherein the value of N is relevant with selected controlled tr tube and capacity of bootstrap capacitor etc., is prerequisite to guarantee that the charge cycle inner upper tube can be kept normally when being provided with, and generally can be made as between 6 to 16;
(8.2) be provided with that PWM count cycle value is 1 times of switch periods in the Boost module, comparison value is (V
Cont-1);
(8.3) recover on-the-spot, return.
A kind of modulator approach principle that is used for noninverting Buck-Boost power inverter of present embodiment is summarized as follows:
Figure 9 shows that the system diagram of noninverting Buck-Boost power inverter of the present invention, comprise input capacitance C
In, controlled tr tube SA, SB, SC and SD, filter inductance L, output capacitance C
OutWith a controller.Four controlled tr tubes distribute by the H bridge and connect the brachium pontis mid point by inductance L and are coupled.Controller carries out PI according to feedback signal (output voltage or input voltage or other signals) and regulates acquisition controlled quentity controlled variable V
Cont, produce four tunnel drive signal GA, GB, GC and GD by this controlled quentity controlled variable then and drive corresponding controlled tr tube respectively, the wherein complementary conducting of controlled tr tube SA and SB, the complementary conducting of controlled tr tube SC and SD.Controller is according to controlled quentity controlled variable V
ContCalculate and obtain three kinds of on off states: (1) SA, SD conducting, SB, SC turn-off, and SA-SD represents with on off state; (2) SA, SC conducting,, SB, SD turn-off, SA-SC represents with on off state; (3) SB, SD conducting, SA, SC turn-off, and SB-SD represents with on off state.Controller works in different patterns by selecting three kinds of on off states to reach noninverting Buck-Boost power inverter: in the Buck mode of operation, according to control signal V
ContCalculate corresponding Buck part controlled quentity controlled variable V
Buck_cWith Boost part controlled quentity controlled variable V
Boost_c, realize control by SA-SD and SA-SC two states respectively then; In the Buck-Boost mode of operation, realize control by SA-SD, SA-SC and three kinds of states of SB-SD, wherein SA-SD SA-SC state and SA-SD state alternation number of times are x, and SB-SD state and the temporary substitute of SA-SD state are made number of times and are (m-x), and x is by controlled quentity controlled variable V
ContAffiliated interval definite, thus realize the PFM modulation; In the Boost mode of operation, according to control signal V
ContCalculate corresponding Boost part controlled quentity controlled variable V
Boost_cWith Buck part controlled quentity controlled variable V
Buck_c, realize control by SA-SD and SB-SD two states respectively then;
Figure 10 is that the pulse of Buck mode of operation generates the modulation system schematic diagram.C among the figure
BuckAnd C
BoostBe respectively the carrier wave of Buck part and Boost part, carrier cycle is respectively T
Buck=T, T
Boost=7T, T are the switch periods of noninverting Buck-Boost power inverter.Here be example to the Buck carrier cycle for 7 times with the Boost carrier cycle, that is to say the charging pulse that produces a Boost every 7 Buck switch periods, to guarantee that Boost partly goes up pipe (being SD) and keeps normally.The charging pulse cycle in the practical application can be set according to the capacity of the chip for driving that is adopted, bootstrap capacitor and the junction capacitance of controlled tr tube, suitable increase T
BoostCan further reduce switch motion, reduce switching loss, improve the efficient of system.GA, GB, GC, GD drive controlled tr tube SA, SB, SC, SD in the noninverting Buck-Boost power inverter respectively, wherein GA and GB complementation, GC and GD complementation for the drive signal that modulation generates.In the Buck mode of operation, by controlled quentity controlled variable V
Buck_c(V
Buck_c=V
Cont) generate needed pwm signal, V
Boost_c(V
Boost_c=V
Boost_min) immobilize, by the T that sets
BoostGenerate the charging pulse of certain frequency, guarantee that bootstrap capacitor keeps enough energy and make pipe (SD) maintenance opening state.
Figure 11 is that the pulse of Buck-Boost mode of operation generates the modulation system schematic diagram.Carrier cycle is respectively T
Buck=4T, T
Boost=4T.At Buck-Boost mode of operation, V
Buck_cAnd V
Boost_c(V
Buck_c=V
Buck_max, V
Boost_c=V
Boost_min) all be changeless, so the pulsewidth of the pulsewidth of Buck Partial Drive Pluse and Boost Partial Drive Pluse is all fixed.According to controlled quentity controlled variable V
Cont, set the corresponding T of control with the PFM modulation system
BuckAnd T
BoostThereby, generate corresponding driving pulse train.Input voltage and output voltage satisfy relation
Regulate t
SAAnd t
SDTime (t
SABe the ON time of controlled tr tube SA, t
SDON time for controlled tr tube SD), can obtain required voltage change ratio relation.The PFM modulation system is regulated t by regulating different pulse train
SAAnd t
SDTime, noninverting Buck-Boost power inverter can be seamlessly transitted between Buck mode of operation and Boost mode of operation, avoid simultaneously producing the very PWM modulation case of big space rate and the very little duty ratio of Boost part of Buck part again, improved the performance and the efficient of system.It is fixed that the set point of concrete PFM modulating frequency can be come according to the situation of real system, general principle is: under the prerequisite that can access needed voltage change ratio relation, reduce the modulating frequency value as much as possible, thereby be reduced in the switching loss of Buck-Boost pattern, improve system effectiveness.
Figure 12 is that the pulse of Boost mode of operation generates the modulation system schematic diagram.Carrier cycle is respectively T
Buck=7T, T
Boost=T, the Buck carrier cycle is example with 7 times to the Boost carrier cycle here, that is to say 7 Boost switch periods of every mistake, produces the charging pulse of a Buck, to guarantee that Buck partly goes up pipe (being SA) and keeps normally.In the Boost mode of operation, by V
Boost_c(V
Boost_c=V
Cont-1) generates needed pwm signal, V
Buck_c(V
Buck_c=V
Buck_max) immobilize, by the T that sets
BuckGenerate the charging pulse of certain frequency, guarantee that bootstrap capacitor keeps enough energy and make pipe (SA) maintenance opening state.
Claims (5)
1. modulator approach that is used for noninverting Buck-Boost power inverter, it is characterized in that: described method is carried out following steps successively:
The 1st step: carry out the voltage-regulation program, calculate controlled quentity controlled variable V
Cont, controlled quentity controlled variable V wherein
ContBe duty cycle signals, span is (0,2);
The 2nd step: judge controlled quentity controlled variable V
ContAnd V
Buck_minSize, if controlled quentity controlled variable V
Cont＜V
Buck_min, then limit controlled quentity controlled variable V
Cont=V
Buck_min, otherwise carry out the 3rd step, wherein V
Buck_minBuck mode of operation minimum duty cycle for being provided with generally is made as about 0.1;
The 3rd step: judge controlled quentity controlled variable V
ContAnd V
Boos_maxIf+1 size is controlled quentity controlled variable V
Cont＞V
Boost_max+ 1, then limit controlled quentity controlled variable V
Cont=V
Boost_max+ 1, otherwise carry out the 4th step, wherein V
Boost_maxBoost mode of operation maximum duty cycle for being provided with generally is made as about 0.6;
The 4th step: judge controlled quentity controlled variable V
ContAnd V
Buck_maxSize, if controlled quentity controlled variable V
Cont＞V
Buck_max, then carried out for the 5th step, otherwise carry out the 6th step, wherein V
Buck_maxBe the Buck mode of operation maximum duty cycle that is provided with, and V
Buck_max＞V
Buck_min, generally be made as about 0.96;
The 5th step: judge controlled quentity controlled variable V
ContAnd V
Boost_minIf+1 size is controlled quentity controlled variable V
Cont＜V
Boost_min+ 1, then carried out for the 7th step, otherwise carry out the 8th step, wherein V
Boost_minBe the Boost mode of operation minimum duty cycle that is provided with, and V
Boost_max＞V
Boost_min, generally be made as about 0.04;
The 6th step: carry out the pulse of Buck mode of operation and generate subprogram, finish the back and carried out for the 9th step;
The 7th step: carry out the pulse of Buck-Boost mode of operation and generate subprogram, finish the back and carried out for the 9th step;
The 8th step: carry out the pulse of Boost mode of operation and generate subprogram, finish the back and carried out for the 9th step;
The 9th step: return.
2. a kind of modulator approach that is used for noninverting Buck-Boost power inverter according to claim 1 is characterized in that: the voltage-regulation program in described the 1st step is carried out following steps:
The 1st step: sampling and outputting voltage signal V
Out
The 2nd step: according to the reference output voltage signal V that sets
RefThe actual voltage signal V that obtains with sampling
OutCalculation deviation V
Orr=V
Ret-V
Out
The 3rd step: calculate controlled quentity controlled variable V through pi regulator
Cont
The 4th step: return.
3. a kind of modulator approach that is used for noninverting Buck-Boost power inverter according to claim 1 is characterized in that: the Buck mode of operation pulse in described the 6th step generates subprogram and carries out following steps:
The 1st step: be provided with that PWM count cycle value is 1 times of switch periods in the Buck module, comparison value is controlled quentity controlled variable V
Cont
The 2nd step: be provided with that PWM count cycle value is N times of switch periods in the Boost module, comparison value is V
Boost_min, wherein the value of N is relevant with selected controlled tr tube and capacity of bootstrap capacitor etc., is prerequisite to guarantee that the charge cycle inner upper tube can be kept normally when being provided with, and generally can be made as between 6 to 16;
The 3rd step: recover on-the-spot, return.
4. a kind of modulator approach that is used for noninverting Buck-Boost power inverter according to claim 1 is characterized in that: the Buck-Boost mode of operation pulse in described the 7th step generates subprogram and carries out following steps:
The 1st step: with interval (V
Buck_max, 1+V
Boost_min) be divided into the m equal portions, represent to m is interval with the 1st interval successively from small to large, according to controlled quentity controlled variable V
ContResiding interval value is provided with that PWM count cycle value is x times of switch periods in the Buck module, and comparison value is V
Buck_max, wherein x is V
ContResiding interval value, the value of m can be according to (V
Buck_max, 1+V
Boost_min) interval size sets, and generally can be made as 8 or 16;
The 2nd step: be provided with that PWM count cycle value is (m-x) times switch periods in the Boost module, comparison value is V
Boost_min
The 3rd step: recover on-the-spot, return.
5. a kind of modulator approach that is used for noninverting Buck-Boost power inverter according to claim 1 is characterized in that: the Boost mode of operation pulse in described the 8th step generates subprogram and carries out following steps:
The 1st step: PWM count cycle value in the Buck module is set is N times switch periods, comparison value is V
Buck_max, wherein the value of N is relevant with selected controlled tr tube and capacity of bootstrap capacitor etc., is prerequisite to guarantee that the charge cycle inner upper tube can be kept normally when being provided with, and generally can be made as between 6 to 16;
The 2nd step: be provided with that PWM count cycle value is 1 times of switch periods in the Boost module, comparison value is (V
Cont-1);
The 3rd step: recover on-the-spot, return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102759121A CN102136797A (en) | 2010-09-08 | 2010-09-08 | Modulating method for noninverting Buck-Boost power inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102759121A CN102136797A (en) | 2010-09-08 | 2010-09-08 | Modulating method for noninverting Buck-Boost power inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102136797A true CN102136797A (en) | 2011-07-27 |
Family
ID=44296469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102759121A Pending CN102136797A (en) | 2010-09-08 | 2010-09-08 | Modulating method for noninverting Buck-Boost power inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102136797A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565586A (en) * | 2012-01-06 | 2012-07-11 | 西安龙腾新能源科技发展有限公司 | Automatic identification method of number of photovoltaic modules |
| CN107342687A (en) * | 2017-08-16 | 2017-11-10 | 深圳市菊水皇家科技有限公司 | A kind of two-way Buck Boosts circuit and its control method |
| CN107925385A (en) * | 2015-04-16 | 2018-04-17 | 思睿逻辑国际半导体有限公司 | Reconfigurable switch mode converters |
| CN108599537A (en) * | 2018-05-18 | 2018-09-28 | 华为技术有限公司 | A kind of method of supplying power to and controller |
| CN108649796A (en) * | 2018-05-14 | 2018-10-12 | 上海交通大学 | A kind of More General Form control method for noninverting One Buck-Boost converter body |
| CN108768170A (en) * | 2018-06-08 | 2018-11-06 | 哈尔滨工程大学 | A method of control One Buck-Boost converter body operational mode is biased by duty ratio |
| CN108880460A (en) * | 2017-05-16 | 2018-11-23 | 丰郅(上海)新能源科技有限公司 | Buck-boost type electric pressure converter and voltage modulated method for photovoltaic module |
| CN109149927A (en) * | 2018-08-08 | 2019-01-04 | 上海交通大学 | A kind of unperturbed control method for noninverting One Buck-Boost converter body |
| CN109194117A (en) * | 2018-08-27 | 2019-01-11 | 矽力杰半导体技术(杭州)有限公司 | Multiple-channel output power inverter and its control method |
| CN109921716A (en) * | 2018-05-28 | 2019-06-21 | 至刚宝节能科技(广州)有限公司 | A kind of impulse wave is synthetically produced string wave mode |
| CN109995233A (en) * | 2018-01-03 | 2019-07-09 | 郑州宇通客车股份有限公司 | A kind of hybrid PWM control method and device |
| CN110138212A (en) * | 2019-06-01 | 2019-08-16 | 深圳市永航新能源技术有限公司 | Half-bridge driven no dead-time control method, control device and charging equipment |
| CN110336459A (en) * | 2019-07-31 | 2019-10-15 | 南通大学 | A kind of novel three ports Boost integrated form converter and control method for photovoltaic energy storage system |
| CN113824437A (en) * | 2021-09-28 | 2021-12-21 | 电子科技大学 | Grid driving circuit |
-
2010
- 2010-09-08 CN CN2010102759121A patent/CN102136797A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565586B (en) * | 2012-01-06 | 2014-06-04 | 西安龙腾新能源科技发展有限公司 | Automatic identification method of number of photovoltaic modules |
| CN102565586A (en) * | 2012-01-06 | 2012-07-11 | 西安龙腾新能源科技发展有限公司 | Automatic identification method of number of photovoltaic modules |
| CN107925385A (en) * | 2015-04-16 | 2018-04-17 | 思睿逻辑国际半导体有限公司 | Reconfigurable switch mode converters |
| CN107925385B (en) * | 2015-04-16 | 2021-08-03 | 思睿逻辑国际半导体有限公司 | Reconfigurable switch-mode converter |
| CN108880460B (en) * | 2017-05-16 | 2021-01-12 | 丰郅(上海)新能源科技有限公司 | Step-up and step-down voltage converter for photovoltaic module and voltage modulation method |
| CN108880460A (en) * | 2017-05-16 | 2018-11-23 | 丰郅(上海)新能源科技有限公司 | Buck-boost type electric pressure converter and voltage modulated method for photovoltaic module |
| CN107342687A (en) * | 2017-08-16 | 2017-11-10 | 深圳市菊水皇家科技有限公司 | A kind of two-way Buck Boosts circuit and its control method |
| CN109995233A (en) * | 2018-01-03 | 2019-07-09 | 郑州宇通客车股份有限公司 | A kind of hybrid PWM control method and device |
| CN109995233B (en) * | 2018-01-03 | 2020-09-01 | 郑州宇通客车股份有限公司 | Hybrid PWM control method and device |
| CN108649796A (en) * | 2018-05-14 | 2018-10-12 | 上海交通大学 | A kind of More General Form control method for noninverting One Buck-Boost converter body |
| CN108599537A (en) * | 2018-05-18 | 2018-09-28 | 华为技术有限公司 | A kind of method of supplying power to and controller |
| CN109921716A (en) * | 2018-05-28 | 2019-06-21 | 至刚宝节能科技(广州)有限公司 | A kind of impulse wave is synthetically produced string wave mode |
| CN108768170B (en) * | 2018-06-08 | 2020-04-07 | 哈尔滨工程大学 | Method for controlling operation mode of Buck-Boost converter through duty ratio bias |
| CN108768170A (en) * | 2018-06-08 | 2018-11-06 | 哈尔滨工程大学 | A method of control One Buck-Boost converter body operational mode is biased by duty ratio |
| CN109149927A (en) * | 2018-08-08 | 2019-01-04 | 上海交通大学 | A kind of unperturbed control method for noninverting One Buck-Boost converter body |
| CN109194117A (en) * | 2018-08-27 | 2019-01-11 | 矽力杰半导体技术(杭州)有限公司 | Multiple-channel output power inverter and its control method |
| CN110138212A (en) * | 2019-06-01 | 2019-08-16 | 深圳市永航新能源技术有限公司 | Half-bridge driven no dead-time control method, control device and charging equipment |
| CN110336459A (en) * | 2019-07-31 | 2019-10-15 | 南通大学 | A kind of novel three ports Boost integrated form converter and control method for photovoltaic energy storage system |
| CN113824437A (en) * | 2021-09-28 | 2021-12-21 | 电子科技大学 | Grid driving circuit |
| CN113824437B (en) * | 2021-09-28 | 2023-05-26 | 电子科技大学 | Gate drive circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102136797A (en) | Modulating method for noninverting Buck-Boost power inverter | |
| CN102959843B (en) | Dc/dc power conversion device | |
| CN102916593B (en) | Power converter circuit | |
| CN102769981B (en) | Intelligent constant-current driver realized by embedded chip and control method of intelligent constant-current driver | |
| CN107834886B (en) | A kind of single-stage boost inverter and its control method | |
| CN102158081B (en) | Three-level boosting DC converter and modulation method thereof | |
| CN102835011A (en) | Method and system for controlling resonant converters used in solar inverters | |
| CN111049381B (en) | Multi-target collaborative optimization control method applied to direct-current three-level converter | |
| CN103151932A (en) | Buck / Boost integration type three-port direct current converter and control method thereof | |
| CN102739052B (en) | Control method and device | |
| CN102158082B (en) | Power supply management system with multipath output | |
| CN104184396A (en) | Photovoltaic power supply system and control method thereof | |
| Kumar et al. | Closed loop PI control of DC-DC Cascode Buck-Boost converter | |
| CN103117670A (en) | Novel direct current (DC)/ (alternating current) AC inverter based on BUCK-BOOST circuit | |
| CN103390999A (en) | Bidirectional double-input buck-boost direct current converter and power allocation method thereof | |
| AU2019101156A4 (en) | Single Phase Grid Connected Inverter for Photovoltaic with MPPT Strategy | |
| CN103986327A (en) | Method for controlling adjacent cycle sampling voltage of digital control voltage reducing type DC-DC switching converter | |
| CN207399158U (en) | A kind of highpowerpulse current source circuit | |
| CN103401419A (en) | Bidirectional double-input BUCK/BUCKBOOST dc converter and power distribution method thereof | |
| CN102035390A (en) | Multi-path phase-shift parallel-connection direct current-to-direct current (DC-DC) conversion device and control method thereof | |
| CN101106327A (en) | Multi-functional integrated DC converter | |
| CN114726203A (en) | Three-level control system and method for wide-range bidirectional DCDC electronic load | |
| CN110943616B (en) | Buck/Boost circuit soft switch PWM-PFM control system and control method | |
| CN203135696U (en) | Switch converter double-rim pulse frequency modulation V2C type control device | |
| Jia et al. | A SiC-based dual-input buck-boost converter with independent MPPT for photovoltaic power systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110727 |