CN106100335A - The method and device of voltage transformation - Google Patents
The method and device of voltage transformation Download PDFInfo
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- CN106100335A CN106100335A CN201610670906.3A CN201610670906A CN106100335A CN 106100335 A CN106100335 A CN 106100335A CN 201610670906 A CN201610670906 A CN 201610670906A CN 106100335 A CN106100335 A CN 106100335A
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- time period
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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
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The disclosure is directed to the method and device of a kind of voltage of transformation, the method for voltage of transformation includes: obtain the modulation parameter of Current Transform voltage device；The relatively magnitude relationship between described modulation parameter and the first carrier of described voltage of transformation device and the second carrier wave；According to described magnitude relationship, carry out boosting, blood pressure lowering or buck；Wherein, before boosting and blood pressure lowering mutually switch, buck is carried out.
Description
Technical field
It relates to power domain, particularly relate to the method and device of voltage transformation.
Background technology
At present, correlation technique has following voltage transformation method:
According to input voltage and output voltage, determine and be currently at boost mode or decompression mode.Then according to current institute
The break-make of place's mode control switch pipe.
But, when input with when exporting that at least side voltage changes, all may cause cannot accurately judging current institute
Place's pattern, and then cannot accurate transformation.Especially, input and output are close, and the slight change of any side is easily caused a liter pressing mold
Formula and the frequent switching of decompression mode, this makes to judge that difficulty is bigger, causes output unstable.
So, correlation technique exists and controls difficulty greatly, and the technical problem of output voltage stability difference.
Summary of the invention
For overcoming problem present in correlation technique, the disclosure provides the method and device of a kind of voltage of transformation.
First aspect according to disclosure embodiment, it is provided that a kind of method of voltage of transformation, including:
Obtain the modulation parameter of Current Transform voltage device；
The relatively magnitude relationship between described modulation parameter and the first carrier of described voltage of transformation device and the second carrier wave；
According to described magnitude relationship, carry out boosting, blood pressure lowering or buck；Wherein, it is mutually switched in boosting and blood pressure lowering
Before, carry out buck.
Alternatively, the amplitude region of described first carrier includes the district that overlaps of the amplitude area coincidence with described second carrier wave
Territory and first isolated area misaligned with described second carrier amplitude region, the amplitude region of described second carrier wave includes institute
State overlapping region and second isolated area misaligned with the amplitude region of described first carrier, and described second isolated area
In arbitrary value more than all values in described first isolated area, described according to described magnitude relationship, carry out boosting, blood pressure lowering or
Person's buck, including:
When described modulation parameter is in described first isolated area, controls step-down switching pipe and in conducting state and turn off shape
Mutually switch between state, and keep boosted switch pipe to be off state, to carry out blood pressure lowering；
When described modulation parameter is in described overlapping region, control described step-down switching pipe and described boosted switch Guan Jun
Mutually switch between conducting state and off state, to carry out buck；
When described modulation parameter is in described second isolated area, control described boosted switch pipe in conducting state and pass
Mutually switch between disconnected state, and keep described step-down switching pipe in the conduction state, to boost.
Alternatively, described first carrier is the most identical with the cycle with the waveform of described second carrier wave, and is linear transformation
Ripple, described when described modulation parameter is in described overlapping region, control described reduction voltage circuit and booster circuit work, to carry out
Buck, including:
Within described modulation parameter each cycle in described overlapping region, execution following steps:
In first time period in the current period of described first carrier, to described step-down switching pipe input high level
In first pulse width modulation (PWM) ripple, and the second time period in the current period of described second carrier wave, to described boosting
2nd PWM ripple of switching tube input high level, to control described step-down switching pipe and described boosted switch pipe is in turning on shape
State；
In the 3rd time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe, in the current period of described first carrier
In four time periods, to the described 2nd PWM ripple of described boosted switch pipe input low level, it is in controlling described boosted switch pipe
Off state；
Described first time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described second time period is the range value time period more than the range value of described second carrier wave of described modulation parameter；Described 3rd
Time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier, described 4th time period
The time period of the range value of described second carrier wave it is not more than for the range value of described modulation parameter.
Alternatively, described when described modulation parameter is in described first isolated area, control step-down switching pipe in conducting
Mutually switch between state and off state, and keep boosted switch pipe to be off state, to carry out blood pressure lowering, including:
Within described modulation parameter each cycle in described first isolated area, execution following steps:
In the 5th time period in the current period of described first carrier, to described step-down switching pipe input high level
A described PWM ripple, in the conduction state to control described step-down switching pipe；
In the 6th time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe；
In the current period of described second carrier wave, to the described 2nd PWM ripple of described boosted switch pipe input low level,
To keep described boosted switch pipe to be off state；
Described 5th time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described 6th time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier.
Alternatively, described when described modulation parameter is in described second isolated area, control described boosted switch pipe and exist
Mutually switch between conducting state and off state, and keep described step-down switching pipe in the conduction state, to boost, bag
Include:
Within described modulation parameter each cycle in described second isolated area, execution following steps:
In the 7th time period in the current period of described second carrier wave, to described boosted switch pipe input high level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the 8th time period in the current period of described second carrier wave, to described boosted switch pipe input low level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the current period of described first carrier, to a described PWM ripple of described step-down switching pipe input high level,
To keep described step-down switching pipe in the conduction state；
Described 7th time period is the range value time period more than the range value of described second carrier wave of described modulation parameter,
Described 8th time period is the time period that the range value of described modulation parameter is not more than the range value of described second carrier wave.
Second aspect according to disclosure embodiment, it is provided that the device of a kind of voltage of transformation, including:
Obtain module, for obtaining the modulation parameter of Current Transform voltage device；
Comparison module, for the first carrier of relatively described modulation parameter and described voltage of transformation device and the second carrier wave it
Between magnitude relationship；
Control module, for according to described magnitude relationship, carries out boosting, blood pressure lowering or buck；Wherein, in boosting and fall
Before pressure mutually switching, carry out buck.
Alternatively, the amplitude region of described first carrier includes the district that overlaps of the amplitude area coincidence with described second carrier wave
Territory and first isolated area misaligned with described second carrier amplitude region, the amplitude region of described second carrier wave includes institute
State overlapping region and second isolated area misaligned with the amplitude region of described first carrier, and described second isolated area
Interior arbitrary value is more than all values in described first isolated area, and described control module includes:
First controls submodule, for when described modulation parameter is in described first isolated area, controls step-down switching
Pipe mutually switches between conducting state and off state, and keeps boosted switch pipe to be off state, to carry out blood pressure lowering；
Second controls submodule, for when described modulation parameter is in described overlapping region, controls described step-down switching
Pipe and described boosted switch Guan Jun mutually switch, to carry out buck between conducting state and off state；
3rd controls submodule, for when described modulation parameter is in described second isolated area, controls described boosting
Switching tube mutually switches between conducting state and off state, and keeps described step-down switching pipe in the conduction state, to enter
Row boosting.
Alternatively, described first carrier is the most identical with the cycle with the waveform of described second carrier wave, and is linear transformation
Ripple, described second controls submodule is used for:
Within described modulation parameter each cycle in described overlapping region, execution following steps:
In first time period in the current period of described first carrier, to described step-down switching pipe input high level
In first pulse width modulation (PWM) ripple, and the second time period in the current period of described second carrier wave, to described boosting
2nd PWM ripple of switching tube input high level, to control described step-down switching pipe and described boosted switch pipe is in turning on shape
State；
In the 3rd time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe, in the current period of described first carrier
In four time periods, to the described 2nd PWM ripple of described boosted switch pipe input low level, it is in controlling described boosted switch pipe
Off state；
Described first time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described second time period is the range value time period more than the range value of described second carrier wave of described modulation parameter；Described 3rd
Time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier, described 4th time period
The time period of the range value of described second carrier wave it is not more than for the range value of described modulation parameter.
Alternatively, described first control submodule is used for:
Within described modulation parameter each cycle in described first isolated area, execution following steps:
In the 5th time period in the current period of described first carrier, to described step-down switching pipe input high level
A described PWM ripple, in the conduction state to control described step-down switching pipe；
In the 6th time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe；
In the current period of described second carrier wave, to the described 2nd PWM ripple of described boosted switch pipe input low level,
To keep described boosted switch pipe to be off state；
Described 5th time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described 6th time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier.
Alternatively, described 3rd control submodule is used for:
Within described modulation parameter each cycle in described second isolated area, execution following steps:
In the 7th time period in the current period of described second carrier wave, to described boosted switch pipe input high level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the 8th time period in the current period of described second carrier wave, to described boosted switch pipe input low level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the current period of described first carrier, to a described PWM ripple of described step-down switching pipe input high level,
To keep described step-down switching pipe in the conduction state；
Described 7th time period is the range value time period more than the range value of described second carrier wave of described modulation parameter,
Described 8th time period is the time period that the range value of described modulation parameter is not more than the range value of described second carrier wave.
Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect:
After obtaining the modulation parameter of Current Transform voltage device, compare between modulation parameter and first carrier and the second carrier wave
Magnitude relationship, and then according to magnitude relationship, carry out boosting, blood pressure lowering or buck.Relatively judge to work as owing to comparing magnitude relationship
Before residing pattern be more prone to realize, even and if the change of input voltage output voltage be not easy to affect and compare the accurate of size
Property, it is achieved that reduce the technique effect controlling difficulty.
It addition, outside boosting and blood pressure lowering, the disclosure additionally provides buck-boost mode.Blood pressure lowering is switched in boosting, or
Before blood pressure lowering switches to boosting, carry out buck, concussion when voltage raising and reducing mutually switches and impact can be buffered, it is possible to
Make output voltage more steady.
It should be appreciated that it is only exemplary and explanatory, not that above general description and details hereinafter describe
The disclosure can be limited.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the disclosure
Example, and for explaining the principle of the disclosure together with description.
Fig. 1 is the circuit diagram according to the voltage of transformation shown in an exemplary embodiment.
Fig. 2 is the flow chart according to the voltage of transformation method shown in an exemplary embodiment.
Fig. 3 is according to the first carrier shown in an exemplary embodiment and the second carrier wave schematic diagram.
Fig. 4 is according to the sequential chart shown in an exemplary embodiment.
Fig. 5 is according to the sequential chart shown in another exemplary embodiment.
Fig. 6 is according to the sequential chart shown in another exemplary embodiment.
Fig. 7 is the schematic diagram of the device according to the voltage of transformation shown in an exemplary embodiment.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they are only with the most appended
The example of the apparatus and method that some aspects that described in detail in claims, the disclosure are consistent.
As it is shown in figure 1, be the circuit diagram of voltage of transformation in the disclosure.The input of voltage of transformation circuit is fixing direct current,
Adjustable unidirectional current is exported by voltage of transformation circuit.During implementing, in the disclosure, the method for voltage of transformation can be used
In triple modular redundant circuit, it is also possible to for other circuit, the disclosure is not particularly limited.
Refer to Fig. 2, Fig. 2 is the flow chart according to the voltage of transformation method shown in an exemplary embodiment, the method bag
Include following steps.
In step s 11, it is thus achieved that the modulation parameter of Current Transform voltage device.
In step s 12, relatively the first carrier of described modulation parameter and described voltage of transformation device and the second carrier wave it
Between magnitude relationship.
In step s 13, according to described magnitude relationship, carry out boosting, blood pressure lowering or buck.
Specifically, the modulation parameter in the disclosure, it is specially present input current and output difference between currents input PI
After (proportional integral, Proportion Integration) adjustment module, the output parameter of PI adjustment module.Therefore, in step
S11 obtains modulation parameter, particularly as being the output parameter gathering PI adjustment module.
In the disclosure, first carrier and the ripple that the second carrier wave is two any settings, for comparing with modulation parameter
Relatively, in order to control the device of voltage of transformation determine carry out boosting, blood pressure lowering or buck, and specifically how to carry out boosting, dropping
Pressure or buck.
In step s 12, the magnitude relationship between modulation parameter and first carrier and the second carrier wave is compared.Specifically, ratio
The amplitude current with first carrier and the second carrier wave compared with modulation parameter value.And then, in S13, according to magnitude relationship, rise
Pressure, blood pressure lowering or buck.
By foregoing description it can be seen that close owing to comparing the size between modulation parameter and first carrier and the second carrier wave
System, relatively judges that being presently in pattern is more prone to, so reducing control difficulty.Further, the simplest owing to comparing magnitude relationship
Rapid again, so, even if input voltage and output voltage change, under higher switching frequency, comparison module also can be very
Respond soon, and then make the voltage accuracy exported higher.
Specifically, the amplitude region of first carrier includes the overlapping region of the amplitude area coincidence with the second carrier wave, with
And with the amplitude region of the second carrier wave misaligned the first isolated area；And the amplitude region of the second carrier wave also includes carrying with first
The overlapping region of the amplitude area coincidence of ripple, also includes second isolated area misaligned with the amplitude region of first carrier.Change
Yan Zhi, the amplitude region of first carrier and the amplitude region of the second carrier wave have identical region, it may have the most different districts
Territory.Further, the arbitrary value in the second isolated area is more than all values in the first isolated area.Certainly, process is being implemented
In, it is also possible to arranging all values that the arbitrary value in the first isolated area is more than in the second isolated area, the disclosure is not done specifically
Limit.
In order to make it easy to understand, as it is shown on figure 3, be to show according to the first carrier shown in an exemplary embodiment and the second carrier wave
It is intended to.Wherein y-axis represents first carrier and the amplitude of the second carrier wave, if the amplitude region of first carrier is [y1, y2], second carries
The amplitude region of ripple is [y3, y4], and wherein, y1, y2, y3 are different with y4, and y1 ＜ y3 ＜ y2.So, overlapping region be [y3,
Y2], the first isolated area be [y1, y3), the second isolated area be (y2, y4].Visible, the second isolated area (y2, y4] in
Arbitrary value more than the first isolated area [y1, y3) in all values.
In the disclosure, step S13, can realize especially by following process:
When described modulation parameter is in described first isolated area, controls step-down switching pipe and in conducting state and turn off shape
Mutually switch between state, and keep boosted switch pipe to be off state, to carry out blood pressure lowering；
When described modulation parameter is in described overlapping region, control described step-down switching pipe and described boosted switch Guan Jun
Mutually switch between conducting state and off state, to carry out buck；
When described modulation parameter is in described second isolated area, control described boosted switch pipe in conducting state and pass
Mutually switch between disconnected state, and keep described step-down switching pipe in the conduction state, to boost.
Specifically, it is respectively less than appointing of overlapping region and the second isolated area due to all values in the first isolated area
Meaning value, therefore, by the comparison in step S12, when modulation parameter parameter is in the first isolated area, represents modulation parameter ratio
It is less, so less voltage should be exported.So now controlling step-down switching pipe phase between conducting state and off state
Switching mutually, and keep boosted switch pipe to be off state, so that the device of voltage of transformation carries out blood pressure lowering.
And when modulation parameter is in overlapping region, represent that modulation parameter does not has significantly greater, do not have significantly smaller yet, that
May will switch between voltage raising and reducing by voltage of transformation circuit.So, in the disclosure, control step-down switching pipe and boosting
Switching tube all mutually switches between conducting state and off state, so that the device of voltage of transformation carries out buck.
Owing to booster circuit and reduction voltage circuit all rise in work, a part so voltage raising and reducing is cancelled out each other, and then buffering
Concussion when pressure drop crush-cutting changes and impact so that output voltage is steady.
When modulation parameter is in the second isolated area, represent that modulation parameter is the biggest, so should export bigger
Voltage.Mutually switch between conducting state and off state so now controlling boosted switch pipe, and keep described blood pressure lowering
Switching tube is in the conduction state, so that the device of voltage of transformation boosts.
It will be appreciated by those skilled in the art that owing to the change of modulation parameter is arbitrary, so while " when described modulation
When parameter is in described first isolated area, controls step-down switching pipe and mutually switch between conducting state and off state, and
Boosted switch pipe is kept to be off state, to carry out blood pressure lowering " it is documented in " when described modulation parameter is in described overlapping region
Time, control described step-down switching pipe and described boosted switch Guan Jun mutually switches, to enter between conducting state and off state
Row buck " before, " when described modulation parameter is in described overlapping region, control described reduction voltage circuit and booster circuit work
Make, to carry out buck " it is documented in and " when described modulation parameter is in described second isolated area, controls described boosted switch
Pipe mutually switches between conducting state and off state, and keeps described step-down switching pipe in the conduction state, to rise
Pressure " before, but, it is not limiting as above three step execution sequence during implementing.During implementing,
The execution sequence of above three step should according to modulation parameter in overlapping region, the first isolated area or the second independent zones
Territory.
Such as, if modulation parameter is gradually increased, then can first blood pressure lowering, then buck, finally boost；If modulate by
The least, then can first boost, then buck, last blood pressure lowering, or can also first buck, then blood pressure lowering.
Further, first carrier and the waveform of the second carrier wave in the disclosure are the most identical with the cycle, and are linear transformation
Ripple.During implementing, those of ordinary skill in the field can select triangular wave, sawtooth waveforms etc. to carry as first
Ripple and the second carrier wave, the application is not particularly limited.Such as shown in Fig. 3, first carrier and the second carrier wave are waveform and cycle phase
Same triangular wave.
No matter how the waveform of first carrier and the second carrier wave changes, and in the disclosure, carries out boosting, blood pressure lowering and buck
Mode as follows:
1) within each cycle in described overlapping region of described modulation parameter, following steps are performed:
In first time period in the current period of described first carrier, to described step-down switching pipe input high level
In first pulse width modulation (PWM) ripple, and the second time period in the current period of described second carrier wave, to described boosting
2nd PWM ripple of switching tube input high level, to control described step-down switching pipe and described boosted switch pipe is in turning on shape
State；
In the 3rd time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe, in the current period of described first carrier
In four time periods, to the described 2nd PWM ripple of described boosted switch pipe input low level, it is in controlling described boosted switch pipe
Off state；
Described first time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described second time period is the range value time period more than the range value of described second carrier wave of described modulation parameter；Described 3rd
Time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier, described 4th time period
The time period of the range value of described second carrier wave it is not more than for the range value of described modulation parameter.
2) within each cycle in described first isolated area of described modulation parameter, following steps are performed:
In the 5th time period in the current period of described first carrier, to described step-down switching pipe input high level
A described PWM ripple, in the conduction state to control described step-down switching pipe；
In the 6th time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe；
In the current period of described second carrier wave, to the described 2nd PWM ripple of described boosted switch pipe input low level,
To keep described boosted switch pipe to be off state；
Described 5th time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described 6th time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier.
3) within each cycle in described second isolated area of described modulation parameter, following steps are performed:
In the 7th time period in the current period of described second carrier wave, to described boosted switch pipe input high level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the 8th time period in the current period of described second carrier wave, to described boosted switch pipe input low level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the current period of described first carrier, to a described PWM ripple of described step-down switching pipe input high level,
To keep described step-down switching pipe in the conduction state；
Described 7th time period is the range value time period more than the range value of described second carrier wave of described modulation parameter,
Described 8th time period is the time period that the range value of described modulation parameter is not more than the range value of described second carrier wave.
Specifically, the disclosure inputs a PWM (pulse width modulation, Pulse Width to step-down switching pipe
Modulation) ripple, to control the break-make of step-down switching pipe.The 2nd PWM ripple is inputted, to control boosted switch to boosted switch pipe
Pipe.Wherein, step-down switching pipe and boosted switch pipe are all to open when high level, turn off during low level.Certainly, implementing
During, it is also possible to selecting to turn off when high level, the switching tube opened during low level is as boosted switch pipe and step-down switching
Pipe, the disclosure is not particularly limited.
In first carrier and each cycle of the second carrier wave, the range value in modulation parameter is more than the range value of first carrier
Time period in, generate a PWM ripple of high level, and then to a PWM ripple of step-down switching pipe input high level, control fall
The pipe that compresses switch is in the conduction state；In the time period of the range value being not more than first carrier at the range value of modulation parameter, generate
A low level PWM ripple, and then to a PWM ripple of step-down switching pipe input low level, control step-down switching pipe and be in pass
Disconnected state.In like manner, modulation parameter range value more than the second carrier wave range value time period in, generate high level second
PWM ripple, and then to the 2nd PWM ripple of boosted switch pipe input high level, control boosted switch pipe in the conduction state；In modulation
In the time period of the range value that the range value of parameter is not more than the second carrier wave, generate low level 2nd PWM ripple, and then to boosting
2nd PWM ripple of switching tube input low level, controls boosted switch pipe and is off state.
Turn next to Fig. 4, be according to the sequential chart shown in an exemplary embodiment.With first carrier and the second carrier wave it is
As a example by sawtooth waveforms.In the diagram, the sawtooth waveforms of solid line represents the second carrier wave, and the sawtooth waveforms of dotted line represents first carrier.With time shaft
The region between two dotted lines parallel for t is overlapping region.The oblique line being gradually increasing represents modulation parameter.Below two waveforms by
Represent the 2nd PWM ripple and a PWM ripple the most successively.
In first carrier and the period 1 of the second carrier wave, owing to modulation parameter is in the first isolated area, and modulation ginseng
The range value of number is first more than the range value of first carrier, subsequently equal to the range value of first carrier, finally less than first carrier
Range value, the most first arranging a PWM ripple is high level, and then opens step-down switching pipe, in the period 1, in modulation parameter
Intersect the moment with first carrier, be i.e. modulation parameter and the current amplitude equal moment of first carrier, then a PWM ripple be adjusted to
Low level, turns off step-down switching pipe.Owing to, in the period 1, the range value of modulation parameter is consistently less than the amplitude of the second carrier wave
Value, so arranging the 2nd PWM ripple all the time is low level, and then keeps boosted switch pipe to be off state.Due to first three week
Interim modulation parameter is all in the first isolated area, so within second round, period 3, performs similar operation, with
First three cycle carries out blood pressure lowering.
Within the period 4, modulation parameter has increased entrance overlapping region, within the period 4, the amplitude of modulation parameter
Value is first more than the range value of first carrier, subsequently equal to the range value of first carrier, finally less than the range value of first carrier, because of
This first arranges a PWM ripple is high level, and then opens step-down switching pipe, in the period 4, carries with first in modulation parameter
Ripple intersects the moment, i.e. modulation parameter and the current amplitude equal moment of first carrier, then a PWM ripple is adjusted to low level,
Turn off step-down switching pipe.Owing to, in the period 4, the range value of modulation parameter is consistently less than the range value of the second carrier wave, so
All the time arranging the 2nd PWM ripple is low level, and then keeps boosted switch pipe to be off state.
Subsequently, in the period 5, the range value of modulation parameter is first more than the range value of first carrier, subsequently equal to first
The range value of carrier wave, finally less than the range value of first carrier, the most first arranging a PWM ripple is high level, and then opens fall
Compress switch pipe, in the period 5, intersects the moment in modulation parameter with first carrier, and i.e. modulation parameter and first carrier is current
The amplitude equal moment, then a PWM ripple is adjusted to low level, turns off step-down switching pipe.Owing to, in the period 5, modulation is joined
Number is first more than the range value of the second carrier wave, subsequently equal to the range value of the second carrier wave, finally less than the range value of the second carrier wave, because of
This first arranges the 2nd PWM ripple is high level, and then opens boosted switch pipe, in the period 5, carries with second in modulation parameter
Ripple intersects the moment, i.e. modulation parameter and the current amplitude equal moment of the second carrier wave, then the 2nd PWM ripple is adjusted to low level,
Turn off boosted switch pipe.Owing in the period 6, modulation parameter is all in overlapping region, so within the period 6, performing similar
Operation, to carry out buck in the 5th and period 6.
In the 7th start time in cycle, modulation parameter increases entrance the second isolated area, owing to modulation parameter is only second
In vertical region, and the range value of modulation parameter is first more than the range value of the second carrier wave, subsequently equal to the range value of the second carrier wave,
Afterwards less than the range value of the second carrier wave, the most first arranging the 2nd PWM ripple is high level, and then opens boosted switch pipe, the 7th
In cycle, intersect the moment in modulation parameter with the second carrier wave, i.e. the current amplitude equal moment of modulation parameter and the second carrier wave, then
2nd PWM ripple is adjusted to low level, turns off boosted switch pipe.Owing to, in the 7th cycle, the range value of modulation parameter is all the time
More than the range value of first carrier, so arranging a PWM ripple all the time is high level, and then step-down switching pipe is kept to be on
State.
In like manner, refer to Fig. 5, be according to the sequential chart shown in another exemplary embodiment.Carry with first carrier and second
As a example by ripple is sawtooth waveforms.In Figure 5, the sawtooth waveforms of solid line represents the second carrier wave, and the sawtooth waveforms of dotted line represents first carrier.With time
The region between two dotted lines parallel for countershaft t is overlapping region.The oblique line being gradually increasing represents modulation parameter.Two ripples below
Shape represents the 2nd PWM ripple and a PWM ripple the most successively.
Fig. 5 is illustrated similar with to the explanation of Fig. 4, just repeat no more at this.
In like manner, refer to Fig. 6, be according to the sequential chart shown in another exemplary embodiment.Carry with first carrier and second
As a example by ripple is triangular wave.In figure 6, the triangular wave of solid line represents the second carrier wave, and the triangular wave of dotted line represents first carrier.With time
The region between two dotted lines parallel for countershaft t is overlapping region.The oblique line being gradually increasing represents modulation parameter.Two ripples below
Shape represents the 2nd PWM ripple and a PWM ripple the most successively.
Fig. 6 is illustrated similar with to the explanation of Fig. 4, just repeat no more at this.
By foregoing description it can be seen that in the technical scheme of the disclosure, it is thus achieved that the modulation ginseng of Current Transform voltage device
After number, compare the magnitude relationship between modulation parameter and first carrier and the second carrier wave, and then according to magnitude relationship, rise
Pressure, blood pressure lowering or buck.Relatively judge that the pattern that is presently in is more prone to realize owing to comparing magnitude relationship, even and if inputting
The change of voltage output voltage is not easy to affect the accuracy comparing size, it is achieved that reduce the technique effect controlling difficulty.
It addition, outside boosting and blood pressure lowering, the disclosure additionally provides buck-boost mode.Blood pressure lowering is switched in boosting, or
Before blood pressure lowering switches to boosting, carry out buck, concussion when voltage raising and reducing mutually switches and impact can be buffered, it is possible to
Make output voltage more steady.
As it is shown in fig. 7, be the schematic diagram of the device of the voltage of transformation in the embodiment of the present application, this device 100 includes:
Obtain module 121, for obtaining the modulation parameter of Current Transform voltage device；
Comparison module 122, the first carrier and second for relatively described modulation parameter with described voltage of transformation device carries
Magnitude relationship between ripple；
Control module 123, for according to described magnitude relationship, carries out boosting, blood pressure lowering or buck；Wherein, in boosting
Before mutually switching with blood pressure lowering, carry out buck.
Alternatively, the amplitude region of described first carrier includes the district that overlaps of the amplitude area coincidence with described second carrier wave
Territory and first isolated area misaligned with described second carrier amplitude region, the amplitude region of described second carrier wave includes institute
State overlapping region and second isolated area misaligned with the amplitude region of described first carrier, and described second isolated area
Interior arbitrary value is more than all values in described first isolated area, and described control module includes:
First controls submodule, for when described modulation parameter is in described first isolated area, controls step-down switching
Pipe mutually switches between conducting state and off state, and keeps boosted switch pipe to be off state, to carry out blood pressure lowering；
Second controls submodule, for when described modulation parameter is in described overlapping region, controls described step-down switching
Pipe and described boosted switch Guan Jun mutually switch, to carry out buck between conducting state and off state；
3rd controls submodule, for when described modulation parameter is in described second isolated area, controls described boosting
Switching tube mutually switches between conducting state and off state, and keeps described step-down switching pipe in the conduction state, to enter
Row boosting.
Alternatively, described first carrier is the most identical with the cycle with the waveform of described second carrier wave, and is linear transformation
Ripple, described second controls submodule is used for:
Within described modulation parameter each cycle in described overlapping region, execution following steps:
In first time period in the current period of described first carrier, to described step-down switching pipe input high level
In first pulse width modulation (PWM) ripple, and the second time period in the current period of described second carrier wave, to described boosting
2nd PWM ripple of switching tube input high level, to control described step-down switching pipe and described boosted switch pipe is in turning on shape
State；
In the 3rd time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe, in the current period of described first carrier
In four time periods, to the described 2nd PWM ripple of described boosted switch pipe input low level, it is in controlling described boosted switch pipe
Off state；
Described first time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described second time period is the range value time period more than the range value of described second carrier wave of described modulation parameter；Described 3rd
Time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier, described 4th time period
The time period of the range value of described second carrier wave it is not more than for the range value of described modulation parameter.
Alternatively, described first control submodule is used for:
Within described modulation parameter each cycle in described first isolated area, execution following steps:
In the 5th time period in the current period of described first carrier, to described step-down switching pipe input high level
A described PWM ripple, in the conduction state to control described step-down switching pipe；
In the 6th time period in the current period of described first carrier, to described step-down switching pipe input low level
A described PWM ripple, is off state controlling described step-down switching pipe；
In the current period of described second carrier wave, to the described 2nd PWM ripple of described boosted switch pipe input low level,
To keep described boosted switch pipe to be off state；
Described 5th time period is the range value time period more than the range value of described first carrier of described modulation parameter,
Described 6th time period is the time period that the range value of described modulation parameter is not more than the range value of described first carrier.
Alternatively, described 3rd control submodule is used for:
Within described modulation parameter each cycle in described second isolated area, execution following steps:
In the 7th time period in the current period of described second carrier wave, to described boosted switch pipe input high level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the 8th time period in the current period of described second carrier wave, to described boosted switch pipe input low level
Described 2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the current period of described first carrier, to a described PWM ripple of described step-down switching pipe input high level,
To keep described step-down switching pipe in the conduction state；
Described 7th time period is the range value time period more than the range value of described second carrier wave of described modulation parameter,
Described 8th time period is the time period that the range value of described modulation parameter is not more than the range value of described second carrier wave.
About the device in above-described embodiment, wherein modules performs the concrete mode of operation in relevant the method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
Those skilled in the art, after considering description and putting into practice the disclosure, will readily occur to other embodiment party of the disclosure
Case.The application is intended to any modification, purposes or the adaptations of the disclosure, these modification, purposes or adaptability
Change is followed the general principle of the disclosure and includes the undocumented common knowledge in the art of the disclosure or usual skill
Art means.Description and embodiments is considered only as exemplary, and the true scope of the disclosure and spirit are by claim below
Point out.
It should be appreciated that the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and
And various modifications and changes can carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.
Claims (10)
1. the method for a voltage of transformation, it is characterised in that including:
Obtain the modulation parameter of Current Transform voltage device；
The relatively magnitude relationship between described modulation parameter and the first carrier of described voltage of transformation device and the second carrier wave；
According to described magnitude relationship, carry out boosting, blood pressure lowering or buck；Wherein, before boosting and blood pressure lowering mutually switch, enter
Row buck.
The method of voltage of transformation the most according to claim 1, it is characterised in that the amplitude region of described first carrier includes
With the overlapping region of the amplitude area coincidence of described second carrier wave and misaligned with described second carrier amplitude region first
Isolated area, the amplitude region of described second carrier wave includes described overlapping region and with the amplitude region of described first carrier not
The second isolated area overlapped, and the arbitrary value in described second isolated area is more than owning in described first isolated area
Value, described according to described magnitude relationship, carry out boosting, blood pressure lowering or buck, including:
When described modulation parameter is in described first isolated area, control step-down switching pipe conducting state and off state it
Between mutually switch, and keep boosted switch pipe be off state, to carry out blood pressure lowering；
When described modulation parameter is in described overlapping region, controls described step-down switching pipe and described boosted switch Guan Jun is leading
Lead to and mutually switch between state and off state, to carry out buck；
When described modulation parameter is in described second isolated area, controls described boosted switch pipe and in conducting state and turn off shape
Mutually switch between state, and keep described step-down switching pipe in the conduction state, to boost.
The method of voltage of transformation the most according to claim 2, it is characterised in that described first carrier and described second carrier wave
Waveform the most identical with the cycle, and be the ripple of linear transformation, described when described modulation parameter is in described overlapping region, control
Make described reduction voltage circuit and booster circuit work, to carry out buck, including:
Within described modulation parameter each cycle in described overlapping region, execution following steps:
In first time period in the current period of described first carrier, to the first of described step-down switching pipe input high level
In pulse width modulation (PWM) ripple, and the second time period in the current period of described second carrier wave, to described boosted switch
2nd PWM ripple of pipe input high level, is in conducting state controlling described step-down switching pipe and described boosted switch pipe；
In the 3rd time period in the current period of described first carrier, to described in described step-down switching pipe input low level
Oneth PWM ripple, is off state controlling described step-down switching pipe, in the current period of described first carrier the 4th time
Between in section, to the described 2nd PWM ripple of described boosted switch pipe input low level, be off controlling described boosted switch pipe
State；
Described first time period is the range value time period more than the range value of described first carrier of described modulation parameter, described
Second time period was the range value time period more than the range value of described second carrier wave of described modulation parameter；Described 3rd time
The range value that section is described modulation parameter is not more than the time period of the range value of described first carrier, and described 4th time period is institute
State the time period that the range value of modulation parameter is not more than the range value of described second carrier wave.
The method of voltage of transformation the most according to claim 2, it is characterised in that described when described modulation parameter is described
Time in one isolated area, control step-down switching pipe and mutually switch between conducting state and off state, and keep boosted switch
Pipe is off state, to carry out blood pressure lowering, including:
Within described modulation parameter each cycle in described first isolated area, execution following steps:
In the 5th time period in the current period of described first carrier, to described in described step-down switching pipe input high level
Oneth PWM ripple, in the conduction state to control described step-down switching pipe；
In the 6th time period in the current period of described first carrier, to described in described step-down switching pipe input low level
Oneth PWM ripple, is off state controlling described step-down switching pipe；
In the current period of described second carrier wave, to the described 2nd PWM ripple of described boosted switch pipe input low level, to protect
Hold described boosted switch pipe and be off state；
Described 5th time period is the range value time period more than the range value of described first carrier of described modulation parameter, described
6th time period was the time period that the range value of described modulation parameter is not more than the range value of described first carrier.
The method of voltage of transformation the most according to claim 2, it is characterised in that described when described modulation parameter is described
Time in two isolated areas, control described boosted switch pipe and mutually switch between conducting state and off state, and keep described
Step-down switching pipe is in the conduction state, to boost, including:
Within described modulation parameter each cycle in described second isolated area, execution following steps:
In the 7th time period in the current period of described second carrier wave, to described in described boosted switch pipe input high level
2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the 8th time period in the current period of described second carrier wave, to described in described boosted switch pipe input low level
2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the current period of described first carrier, to a described PWM ripple of described step-down switching pipe input high level, to protect
Hold described step-down switching pipe in the conduction state；
Described 7th time period is the range value time period more than the range value of described second carrier wave of described modulation parameter, described
8th time period was the time period that the range value of described modulation parameter is not more than the range value of described second carrier wave.
6. the device of a voltage of transformation, it is characterised in that including:
Obtain module, for obtaining the modulation parameter of Current Transform voltage device；
Comparison module, for relatively between described modulation parameter and the first carrier of described voltage of transformation device and the second carrier wave
Magnitude relationship；
Control module, for according to described magnitude relationship, carries out boosting, blood pressure lowering or buck；Wherein, in boosting and blood pressure lowering phase
Mutually before switching, carry out buck.
The device of voltage of transformation the most according to claim 6, it is characterised in that the amplitude region of described first carrier includes
With the overlapping region of the amplitude area coincidence of described second carrier wave and misaligned with described second carrier amplitude region first
Isolated area, the amplitude region of described second carrier wave includes described overlapping region and with the amplitude region of described first carrier not
The second isolated area overlapped, and the arbitrary value in described second isolated area is more than owning in described first isolated area
Value, described control module includes:
First controls submodule, for when described modulation parameter is in described first isolated area, controls step-down switching pipe and exists
Mutually switch between conducting state and off state, and keep boosted switch pipe to be off state, to carry out blood pressure lowering；
Second controls submodule, for when described modulation parameter is in described overlapping region, control described step-down switching pipe and
Described boosted switch Guan Jun mutually switches between conducting state and off state, to carry out buck；
3rd controls submodule, for when described modulation parameter is in described second isolated area, controls described boosted switch
Pipe mutually switches between conducting state and off state, and keeps described step-down switching pipe in the conduction state, to rise
Pressure.
The device of voltage of transformation the most according to claim 7, it is characterised in that described first carrier and described second carrier wave
Waveform the most identical with the cycle, and be the ripple of linear transformation, described second controls submodule is used for:
Within described modulation parameter each cycle in described overlapping region, execution following steps:
In first time period in the current period of described first carrier, to the first of described step-down switching pipe input high level
In pulse width modulation (PWM) ripple, and the second time period in the current period of described second carrier wave, to described boosted switch
2nd PWM ripple of pipe input high level, is in conducting state controlling described step-down switching pipe and described boosted switch pipe；
In the 3rd time period in the current period of described first carrier, to described in described step-down switching pipe input low level
Oneth PWM ripple, is off state controlling described step-down switching pipe, in the current period of described first carrier the 4th time
Between in section, to the described 2nd PWM ripple of described boosted switch pipe input low level, be off controlling described boosted switch pipe
State；
Described first time period is the range value time period more than the range value of described first carrier of described modulation parameter, described
Second time period was the range value time period more than the range value of described second carrier wave of described modulation parameter；Described 3rd time
The range value that section is described modulation parameter is not more than the time period of the range value of described first carrier, and described 4th time period is institute
State the time period that the range value of modulation parameter is not more than the range value of described second carrier wave.
The device of side's voltage of transformation the most according to claim 7, it is characterised in that described first controls submodule is used for:
Within described modulation parameter each cycle in described first isolated area, execution following steps:
In the 5th time period in the current period of described first carrier, to described in described step-down switching pipe input high level
Oneth PWM ripple, in the conduction state to control described step-down switching pipe；
In the 6th time period in the current period of described first carrier, to described in described step-down switching pipe input low level
Oneth PWM ripple, is off state controlling described step-down switching pipe；
In the current period of described second carrier wave, to the described 2nd PWM ripple of described boosted switch pipe input low level, to protect
Hold described boosted switch pipe and be off state；
Described 5th time period is the range value time period more than the range value of described first carrier of described modulation parameter, described
6th time period was the time period that the range value of described modulation parameter is not more than the range value of described first carrier.
The device of voltage of transformation the most according to claim 7, it is characterised in that the described 3rd controls submodule is used for:
Within described modulation parameter each cycle in described second isolated area, execution following steps:
In the 7th time period in the current period of described second carrier wave, to described in described boosted switch pipe input high level
2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the 8th time period in the current period of described second carrier wave, to described in described boosted switch pipe input low level
2nd PWM ripple, in the conduction state to control described boosted switch pipe；
In the current period of described first carrier, to a described PWM ripple of described step-down switching pipe input high level, to protect
Hold described step-down switching pipe in the conduction state；
Described 7th time period is the range value time period more than the range value of described second carrier wave of described modulation parameter, described
8th time period was the time period that the range value of described modulation parameter is not more than the range value of described second carrier wave.
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Cited By (1)
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| CN111400981A (en) * | 2020-03-05 | 2020-07-10 | 上海科梁信息工程股份有限公司 | Simulation circuit control system, simulation circuit control method, electronic device, and storage medium |
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| JP2000166223A (en) * | 1998-12-01 | 2000-06-16 | Motorola Japan Ltd | Step-up/down dc/dc converter |
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