CN106100324B - High-gain DC booster converter based on the positive clamper of diode - Google Patents
High-gain DC booster converter based on the positive clamper of diode Download PDFInfo
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- CN106100324B CN106100324B CN201610494217.1A CN201610494217A CN106100324B CN 106100324 B CN106100324 B CN 106100324B CN 201610494217 A CN201610494217 A CN 201610494217A CN 106100324 B CN106100324 B CN 106100324B
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention belongs to power electronics fields, more particularly to the high-gain DC booster converter based on the positive clamper of diode, including the positive clamp networks of active electric network, diode and electric capacity of voltage regulation；Active electric network, including two modules are parallel with one another, and each module is composed in series by switching tube and inductance；The positive clamp networks of diode, including two Diode series include that a capacitance forms three-terminal network between two diodes；Two diodes in parallel in electric capacity of voltage regulation and the positive clamp networks of diode, and and load parallel connection.The converter is small；Evade the leakage inductance problem in the DC converter designed based on coupling inductance, has circuit control strategy simple, the advantages that voltage gain is higher, inductive current stress and smaller switch tube voltage stress.
Description
Technical field
The invention belongs to power electronics fields, more particularly to the boosting of the high-gain DC based on the positive clamper of diode becomes
Parallel operation.
Background technology
Due to fossil energy non-renewable and primary energy using it is rear to caused by environment seriously pollution etc. ask
Topic becomes increasingly conspicuous, with regard to how to obtain novel, free of contamination regenerative resource as a research important topic.Common light
Photovoltaic generating system is made of photovoltaic array, MPPT maximum power point tracking (MPPT), DC voltage booster circuit and gird-connected inverter.Due to light
The DC voltage amplitude for lying prostrate battery module output is generally relatively low, usually between 28V-40V, but the common parallel network reverse of people
The DC bus input voltage of device generally requires to be reached for 380V, this just proposes the DC voltage booster circuit in photovoltaic system must
There must be the ability of high-gain.Traditional DC boosting BOOST circuits, in theory, its voltage gain can reach infinitely great.But
In practical application in industry, when BOOST circuit duty ratios are excessive, the unstable problem of some row systems can be caused, this includes
Its input and output electric current and inductive current ripple can be caused to become larger, also the peak point current of switching tube can be caused excessive, so as to cause
Excessive energy loss influences converter working efficiency, or even burns device.At this moment traditional DC boosting BOOST circuits are just
Show its deficiency.Therefore promote a series of high-gain DC booster converter of subsequent researcher's design innovation,
Go to meet the requirement in photovoltaic system to high-gain converter with this.
In all existing high-gain DC converters, due to introducing high frequency transformer to realize the isolated form of high-gain
DC booster converter, compared with there is many lack on non-isolation type direct-current booster converter in system bulk and energy transfer efficiency
It falls into, resulting in non-isolation type converter becomes the emphasis of many scholar's researchs now.Although being nowadays based on coupling inductance to design
DC booster converter out also achieves high-gain, but in its topological structure leakage inductance inevitable property, in addition its with
The increase of inductance turn ratio, the voltage stress of switching tube is also synchronous to be increased, and causes it that can not meet industrial many want
It asks.
Invention content
It is an object of the invention to simple, the gains that meets the control strategy of DC voltage booster circuit requirement in photovoltaic generating system
Height is avoided that caused by device volume is excessive and installs inconvenience, can solve the high-gain converter that tradition is designed based on coupling inductance
The problems such as leakage field.
The technical scheme is that：
Based on the high-gain DC booster converter of the positive clamper of diode, topology unit includes active electric network, diode
Positive clamp networks and electric capacity of voltage regulation；
The active electric network, including two modules are parallel with one another, and each module is composed in series by switching tube and inductance；
The positive clamp networks of diode, including two Diode series are formed including a capacitance between two diodes
Three-terminal network；
Two diodes in parallel in the electric capacity of voltage regulation and the positive clamp networks of diode, and and load parallel connection.
Specific structure is that topology unit includes switching tube S1, switching tube S2, diode D1, diode D2；Inductance L2
Upper end be connected with the upper end of switching tube S2, directly connect the anode of input DC power；The upper ends switching tube S1 and the lower ends inductance L2
It is connected：The upper ends inductance L1 are connected with the lower ends switching tube S2；The lower end of switching tube S1 and inductance L1 are directly negative with input dc power
Pole connects；The left end of capacitance C1 is connected with the upper end of switching tube S1, the right end of capacitance C1 respectively with the left end of diode D1, two poles
The upper end of pipe D2 is connected；The lower end of diode D2 is connected with the lower end of the lower end of switching tube S2, capacitance C2 respectively；Diode D1's
Left end is connected with the upper end of capacitance C2, and load and capacitance C2 are in parallel.
The high-gain DC booster converter based on the positive clamper of diode, including three operation modes are respectively：
First operation mode：Switching tube S1, switching tube S2 and diode D2 conductings, diode D1 cut-offs；
Second operation mode：Switching tube S1, switching tube S2 and diode D2 cut-offs, diode D1 conductings；
Third operation mode：Switching tube S1, switching tube S2, diode D1, diode D2 are turned off；
Switching tube S1 and switching tube S2 controls signal using identical PWM wave, synchronizes control；
First operation mode：Supply voltage is directly loaded respectively on inductance L1, inductance L2 and capacitance C1, gives inductance respectively
L1, inductance L2 and capacitance C1 charge, this moment the voltage U of inductance L1, inductance L2 and the both ends capacitance C1L1、UL2、UC1Equal to power supply electricity
Pressure, inductance L1, inductance L2 electric current IL1、IL2Linear growth；
Second operation mode：The voltage U at the both ends capacitance C1C1With the induced electromotive force U of inductance L1, inductance L2L1、UL2, it is additional
Supply voltage is serially connected to load and capacitance C2 power supplies；
Third operation mode：The electric current I of inductance L1, inductance L2L1、IL2It is discontinuously zero, by capacitance C2 powering loads.
High-gain DC booster converter provided by the invention based on the positive clamper of diode, can effectively avoid traditional isolation
High frequency transformer is introduced in type DC booster converter, causes it the shortcomings of energy transfer efficiency is low big with system bulk；Also
The leakage inductance problem in the DC converter designed based on coupling inductance can effectively be evaded.Should topological structure by an active electric network
The additional positive clamp circuit combined deformation design of a diode, has circuit control strategy simple, voltage gain is higher, electricity
The advantages that inducing current stress and smaller switch tube voltage stress, has practical value well in industrial applicability.
Description of the drawings
In order to more clearly illustrate this high-gain DC booster converter based on the positive clamper of diode operation principle and
Operating mode now cut-offs the various voltage and current signals of main components in combination, its topology, its topology to its each switching tube
Equivalent circuit in structure under various operating modes does attached drawing introduction：
Fig. 1 is the topological circuit figure of the present invention；
Fig. 2 is the waveform signal figure of electric current, voltage on component of the present invention；
Fig. 3 is the equivalent circuit diagram of the present invention at the first mode of operation；
Fig. 4 is the equivalent circuit diagram of the present invention at the second mode of operation；
Fig. 5 is equivalent circuit diagram of the present invention under third operation mode.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work, should all belong to protection of the present invention
Range.
Embodiment 1
Such as Fig. 1, the connection type of the high-gain DC boost converter topology structure based on the positive clamper of diode.It is wherein electric
The upper end of sense L2 is connected with the upper end of switching tube S2, directly connects the anode of input DC power；The upper ends switching tube S1 and inductance L2
Lower end is connected：The upper ends inductance L1 are connected with the lower ends switching tube S2；The lower end of switching tube S1 and inductance L1 are directly and input dc power
Cathode connect；The left end of capacitance C1 is connected with the upper end of switching tube S1, the left end of right end and diode D1, diode D2 it is upper
End is connected；The lower end of diode D2 is connected with the lower end of the lower end of switching tube S2, capacitance C2；The left end and capacitance C2 of diode D1
Upper end be connected, load and capacitance C2 are in parallel.Its switching tube S1 and switching tube S2 controls signal using identical PWM wave, carries out same
Step control.
Such as table 1, operation mode serial number 1,2 shows that the novel high-gain DC based on the positive clamper of diode boosts and becomes
Switching tube of the parallel operation under continuous current mode (CCM) pattern cut-offs state table figure.The new converter corresponds in ccm mode
Two kinds of switching tube states of cut-offfing be：
Switching tube under 1 three kinds of operation modes of table cut-offs state table
Operation mode serial number 1：Switching tube S1, switching tube S2 and diode D2 conductings, diode D1 cut-offs；
Operation mode serial number 2：Switching tube S1, switching tube S2 and diode D2 cut-offs, diode D1 conductings；
Such as Fig. 2 a, the high-gain DC booster converter work based on the positive clamper of diode is in ccm mode one in circuit
The voltage and current signal waveform of a little main components.Wherein Ugs is the control signal of switching tube S1 and S2, and IL1 and IL2 are respectively
The electric current of inductor L1 and L2 is flowed through, UL1 and UL2 are respectively the voltage at the both ends inductor L1 and L2, and UC1 and UD1 are respectively to add
It is loaded in the voltage of capacitor C1 and the both ends diode D2, ID1 is the electric current for flowing through diode D1.
Such as Fig. 3, supply voltage directly loads on inductance L1, L2 and capacitance C1 respectively at this time, gives inductance L1, inductance respectively
L2 and capacitance C1 charge, this moment the voltage U of inductance L1, inductance L2 and the both ends capacitance C1L1、UL2、UC1Equal to supply voltage, inductance
The electric current I of L1, inductance L2L1、IL2Linear growth；
Such as Fig. 4, the voltage U at the both ends capacitance C1 at this timeC1With the induced electromotive force U of inductance L1, inductance L2L1、UL2, outer power-up
Source voltage is serially connected to load and capacitance C2 power supplies.
Embodiment 2
Operation mode serial number 1：Switching tube S1, switching tube S2 and diode D2 conductings, diode D1 cut-offs；
Operation mode serial number 2：Switching tube S1, switching tube S2 and diode D2 cut-offs, diode D1 conductings；
Operation mode serial number 3：Switching tube S1, switching tube S2, diode D1, diode D2 are turned off.
Such as Fig. 2 b, the high-gain DC booster converter work based on the positive clamper of diode is in dcm mode one in circuit
The voltage and current signal waveform of a little main components.Wherein Ugs is the control signal of switching tube S1 and S2, and IL1 and IL2 are respectively
The electric current of inductance L1 and inductance L2 are flowed through, UL1 and UL2 are respectively the voltage of inductance L1 and the both ends inductance L2, UC1 and UD1 difference
For the voltage for loading in capacitor C1 and the both ends diode D2, ID1 is the electric current for flowing through diode D1.
Such as Fig. 3, supply voltage is directly loaded respectively on inductance L1, inductance L2 and capacitance C1 at this time, give respectively inductance L1,
Inductance L2 and capacitance C1 charge, this moment the voltage U of inductance L1, inductance L2 and the both ends capacitance C1L1、UL2、UC1Equal to supply voltage,
The electric current I of inductance L1, inductance L2L1、IL2Linear growth；
Such as Fig. 4, the voltage U at the both ends capacitance C1 at this timeC1With the induced electromotive force U of inductance L1, inductance L2L1、UL2, outer power-up
Source voltage is serially connected to load and capacitance C2 power supplies.
Such as Fig. 5, the electric current I of inductance L1, inductance L2 at this timeL1、IL2It is discontinuously zero.In entire topological structure, given by capacitance C2
Load supplying.
It should be noted that each case study on implementation is described by the way of progressive in this specification, it is above
It is that detailed Jie has been carried out to a kind of novel high-gain DC booster converter based on the positive clamper of diode provided by the present invention
It continues, principle and implementation of the present invention are described for specific case used herein, and the explanation of above example is only
It is the method and its core concept for being used to help understand invention.
Claims (2)
1. the high-gain DC booster converter based on the positive clamper of diode, which is characterized in that its topology unit includes active net
The positive clamp networks of network, diode and electric capacity of voltage regulation；
The active electric network, including two modules are parallel with one another, and each module is composed in series by switching tube and inductance；
The positive clamp networks of diode, including two Diode series include that a capacitance forms three ends between two diodes
Network；
Two diodes in parallel in the electric capacity of voltage regulation and the positive clamp networks of diode, and and load parallel connection；
Its topology unit includes switching tube S1, switching tube S2, diode D1, diode D2；The upper end of inductance L2 and switching tube S2
Upper end be connected, directly connect the anode of input DC power；The upper ends switching tube S1 are connected with the lower ends inductance L2：The upper ends inductance L1 and
The lower ends switching tube S2 are connected；The lower end of switching tube S1 and inductance L1 directly connect with the cathode of input dc power；A left side of capacitance C1
End is connected with the upper end of switching tube S1, and the right end of capacitance C1 is connected with the upper end of the left end of diode D1, diode D2 respectively；Two
The lower end of pole pipe D2 is connected with the lower end of the lower end of switching tube S2, capacitance C2 respectively, anode and the electric capacity of voltage regulation C2 of diode D2
Cathode be connected；The left end of diode D1 is connected with the upper end of capacitance C2, and load and capacitance C2 are in parallel.
2. the high-gain DC booster converter according to claim 1 based on the positive clamper of diode, which is characterized in that packet
Including three operation modes is respectively：
First operation mode：Switching tube S1, switching tube S2 and diode D2 conductings, diode D1 cut-offs；
Second operation mode：Switching tube S1, switching tube S2 and diode D2 cut-offs, diode D1 conductings；
Third operation mode：Switching tube S1, switching tube S2, diode D1, diode D2 are turned off；
Switching tube S1 and switching tube S2 controls signal using identical PWM wave, synchronizes control；
First operation mode：Supply voltage is directly loaded respectively on inductance L1, inductance L2 and capacitance C1, respectively give inductance L1,
Inductance L2 and capacitance C1 charge, this moment the voltage U of inductance L1, inductance L2 and the both ends capacitance C1L1、UL2、UC1Equal to supply voltage,
The electric current I of inductance L1, inductance L2L1、IL2Linear growth；
Second operation mode：The voltage U at the both ends capacitance C1C1With the induced electromotive force U of inductance L1, inductance L2L1、UL2, additional power source
Voltage is serially connected to load and capacitance C2 power supplies；
Third operation mode：The electric current I of inductance L1, inductance L2L1、IL2It is discontinuously zero, by capacitance C2 powering loads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494217.1A CN106100324B (en) | 2016-06-28 | 2016-06-28 | High-gain DC booster converter based on the positive clamper of diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494217.1A CN106100324B (en) | 2016-06-28 | 2016-06-28 | High-gain DC booster converter based on the positive clamper of diode |
Publications (2)
| Publication Number | Publication Date |
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| CN106100324A CN106100324A (en) | 2016-11-09 |
| CN106100324B true CN106100324B (en) | 2018-10-02 |
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| CN116169882B (en) * | 2023-04-26 | 2023-07-25 | 深圳市恒运昌真空技术有限公司 | High-gain boost converter |
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| CN201733225U (en) * | 2009-12-07 | 2011-02-02 | 浙江大学 | Separated boost converter for realizing forward-flyback by coupling inductances |
| CN103023315A (en) * | 2011-09-28 | 2013-04-03 | 艾默生网络能源有限公司 | Boost circuit |
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Granted publication date: 20181002 Termination date: 20190628 |