CN106505549A - Based on the Novel DC micro-capacitance sensor circuit topological structure that buck boost connect - Google Patents
Based on the Novel DC micro-capacitance sensor circuit topological structure that buck boost connect Download PDFInfo
- Publication number
- CN106505549A CN106505549A CN201611174626.XA CN201611174626A CN106505549A CN 106505549 A CN106505549 A CN 106505549A CN 201611174626 A CN201611174626 A CN 201611174626A CN 106505549 A CN106505549 A CN 106505549A
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- China
- Prior art keywords
- boost
- buck converter
- changers
- voltage
- dutycycle
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a kind of Novel DC micro-capacitance sensor circuit topological structure that is connected based on buck boost, comprising buck converter and boost changers, the buck converter is connected with boost changers；Buck converter and boost changers are connected by the present invention, so when the busbar voltage to direct-current grid carries out constant control and branch current carries out sharing control, only control dutycycle to buck converter, and its input voltage keeps constant；Maintain its dutycycle constant in boost changers, its input voltage is only controlled, the namely output voltage of buck converter, so the larger change in voltage of whole series arm can be realized by the less dutycycle knots modification of buck converter, voltage can be raised simultaneously, and greatly linearisation can be realized, while changing the dutycycle of each branch road buck converter according to current-equalizing method, realize that its sharing control and DC bus-bar voltage are stable.
Description
Technical field
The present invention relates to direct-current grid field of circuit technology, specifically a kind of based on buck-boost series connection
Novel DC micro-capacitance sensor circuit topological structure.
Background technology
In traditional direct-current grid circuit topological structure, buck converter is worked with parallel form, buck converter
Blood pressure lowering control can only be realized with the combination of DC bus-bar voltage droop control, the range of accommodation of DC bus-bar voltage is limited.boost
Although changer can realize boosting rectifier control, the transmission letter in its small signal linearization model between output voltage and dutycycle
Corresponding systems are counted for non-minimum phase second-order system, control strategy is complex.
A branch road of the circuit after buck converter and boost changers are connected as direct-current grid, in buck
Dutycycle is only controlled when changer input voltage is constant, when boost changer dutycycles are constant, by the output of buck converter
As the input of boost changers, equivalent to the input voltage for only controlling boost changers.Become in buck converter dutycycle
When changing very little, acted on by the voltage amplification of boost changers, it is achieved that whole buck-boost changers series arm output
The approximate linearization control of voltage.As buck converter is a nonlinear system, linearisation can only be realized in a small range
Control, the circuit structure that is connected using buck-boost changers, it is possible to achieve whole branch road output voltage is interior in a big way
LINEARIZED CONTROL.
Content of the invention
Present invention aims to the defect and deficiency of prior art, there is provided a kind of based on buck-boost series connection
Novel DC micro-capacitance sensor circuit topological structure, buck converter and boost changers are connected, the dutycycle knots modification of very little
Can realize that larger change in voltage, voltage can be raised, linearisation degree is preferable, while each can be changed according to current-equalizing method
The dutycycle of branch road buck converter, realizes that electric current sharing control and DC bus-bar voltage are stable.
For achieving the above object, the technical solution used in the present invention is：The Novel DC that is connected based on buck-boost is micro-
Mains-power circuit topological structure, comprising buck converter and boost changers, the buck converter is connected with boost changers.
Beneficial effects of the present invention are：Buck converter and boost changers are connected, so buck converter is only controlled
Dutycycle processed, its input voltage keep constant；Maintain its dutycycle constant in boost changers, only control its input voltage,
It is exactly the output voltage of buck converter.Like this, the dutycycle knots modification of very little can realize larger change in voltage, electricity
Pressure can be raised, and linearisation degree is preferable, while the dutycycle of each branch road buck converter can be changed according to current-equalizing method, real
Existing electric current sharing control and DC bus-bar voltage are stable.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural circuit figure of the present invention；
Fig. 2 is the structural circuit schematic diagram of the present invention；
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing and it is embodied as
Mode, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only in order to explaining this
Invention, is not intended to limit the present invention.
Referring to Fig. 1, this specific embodiment is employed the following technical solutions：A kind of Novel direct that is connected based on buck-boost
Stream micro-capacitance sensor circuit topological structure, comprising buck converter and boost changers, the buck converter and boost changers
Series connection.
Referring to Fig. 2, parameter setting is as follows：
Buck-boost series arms 1：
The parameter of buck converter 1 is：Ui1=400V, L1=6 × 10-5H, C1=4 × 10-3F, R1=0.6 Ω, boost
The parameter of changer 1 is：L1'=1 × 10-4H, C1'=1 × 10-4F, R1The Ω of '=5.
Buck-boost series arms 2：
The parameter of buck converter 2 is：Ui2=200V, L2=6 × 10-5H,C2=4 × 10-3F,R2=0.6 Ω, boost
The parameter of changer 2 is：L2'=1 × 10-4H, C2'=1 × 10-4F, R2The Ω of '=5.
Two series arms except input voltage difference in addition to, remaining parameter all same.
Work as Ui1When keeping constant, Uo′1With d1And d1' change and change.Theoretically analyze, due to buck converter
Dutycycle d1Dutycycle d with boost changers1' while changing, have following four combination：(1)d1Conducting, d1' lead
Logical；(2)d1Conducting, d1' shut-off；(3)d1Shut-off, d1' conducting；(4)d1Shut-off, d1' shut-off.Under steady state conditions, do not consider to go here and there
After connection on the premise of impact of the output resistance of boost changers to buck converter, it can be deduced that
Wherein Uo′1rStable state ideal value for 1 output voltage of branch road.Can obtain in the same manner
Wherein Uo′2rStable state ideal value for 2 output voltage of branch road.k0i(i=1,2) be two branch roads the perfect Gain, by
Formula (1), (2) have
Under practical situation, the system that draws buck-boost series arms with State-space Averaging Principle or Average switching-mode method
One circuit model will be extremely complex.For simplifying the analysis, respectively to diAnd di' (i=1,2) takes 9 at equal intervals in open interval (0,1)
Individual numerical value, sets up phantom with the Power blockset (SimPowerSystems) of Matlab/Simulink, by imitative
True experiment calculates input UiArrive reality output Uo' equivalent gain kei(i=1,2), and with the perfect Gain k0i(i=1,2) enter
Row contrast.Have
With the linear fit function regress of Matlab, it can be deduced that k0iAnd keiBetween linear approximate relationship such as
Under：
kei=0.2114+0.7748k0i, (i=1,2)
(5)
When the dutycycle of boost changers is 90%, k0iAnd keiDeviation is larger, therefore removes deviation from linearity larger
Numerical value, it can be deduced that k0iAnd keiBetween linear approximate relationship as follows：
kei=0.0563+0.9378k0i, (i=1,2)
(6)
IfRegard the binary linearity function of d and d ' as, then can draw
If removing the larger numerical value of deviation from linearity, it can be deduced that
The straight line being fitted through simulating, verifying, formula (8) and the simulation result of circuit model are closest, and error is minimum.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as and limit involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Contain an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity
Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (1)
1. the Novel DC micro-capacitance sensor circuit topological structure that is connected based on buck-boost, is become comprising buck converter and boost
Parallel operation, it is characterised in that：The buck converter is connected with boost changers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611174626.XA CN106505549A (en) | 2016-12-19 | 2016-12-19 | Based on the Novel DC micro-capacitance sensor circuit topological structure that buck boost connect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611174626.XA CN106505549A (en) | 2016-12-19 | 2016-12-19 | Based on the Novel DC micro-capacitance sensor circuit topological structure that buck boost connect |
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| CN106505549A true CN106505549A (en) | 2017-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311563A (en) * | 2019-07-29 | 2019-10-08 | 杭州中恒电气股份有限公司 | DCDC circulation control device, control method, electronic equipment, medium |
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| CN102916481A (en) * | 2012-08-16 | 2013-02-06 | 深圳微网能源管理系统实验室有限公司 | Direct-current microgrid system and energy management method thereof |
| CN104638666A (en) * | 2013-11-08 | 2015-05-20 | 西安艾力特电子实业有限公司 | Novel feedback inverting AC circuit |
| CN106026100A (en) * | 2016-07-19 | 2016-10-12 | 河南理工大学 | Voltage stability bifurcation analysis method for AC/DC hybrid power distribution network |
-
2016
- 2016-12-19 CN CN201611174626.XA patent/CN106505549A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120206116A1 (en) * | 2011-02-11 | 2012-08-16 | Alcatel-Lucent Usa Inc. | Active voice band noise filter |
| CN102916481A (en) * | 2012-08-16 | 2013-02-06 | 深圳微网能源管理系统实验室有限公司 | Direct-current microgrid system and energy management method thereof |
| CN104638666A (en) * | 2013-11-08 | 2015-05-20 | 西安艾力特电子实业有限公司 | Novel feedback inverting AC circuit |
| CN106026100A (en) * | 2016-07-19 | 2016-10-12 | 河南理工大学 | Voltage stability bifurcation analysis method for AC/DC hybrid power distribution network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311563A (en) * | 2019-07-29 | 2019-10-08 | 杭州中恒电气股份有限公司 | DCDC circulation control device, control method, electronic equipment, medium |
| CN110311563B (en) * | 2019-07-29 | 2021-05-07 | 杭州中恒电气股份有限公司 | DCDC circulation control device, DCDC circulation control method, electronic apparatus, and medium |
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Application publication date: 20170315 |