CN207835353U - A kind of high-gain converter based on coupling inductance and a kind of power-supply system - Google Patents
A kind of high-gain converter based on coupling inductance and a kind of power-supply system Download PDFInfo
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Abstract
The utility model is related to a kind of high-gain converter based on coupling inductance and a kind of power-supply systems, power-supply system includes input power and converter, converter includes the first inductance and the second inductance, second inductance is the coupling inductance being made of primary side winding and vice-side winding, and the first inductance, the second inductance, the first fly-wheel diode, the second fly-wheel diode, third fly-wheel diode, the 4th fly-wheel diode, the first capacitance, the second capacitance and third capacitance constitute the circuit structure of converter.For the converter that this programme provides for existing converter, gain is higher, disclosure satisfy that high gain requirements.Moreover, using voltage doubling unit in circuit structure, the boost capability of converter is improved, reduces the voltage stress of switching tube and rectification module.In addition, the structure of converter does not increase additional switching tube, the complexity to circuit control is reduced, the loss of circuit is also reduced, improves circuit efficiency.
Description
Technical field
The utility model is related to a kind of high-gain converter based on coupling inductance and a kind of power-supply systems.
Background technology
With increasingly exhausted and environment for human survival the worsening of traditional fossil energy, the regenerative resource of clean type
Development arrived extremely urgent stage, countries in the world all are being dedicated to researching and developing the application of new energy, wherein too
It is positive to have been obtained for relatively broad application with wind energy.But for these systems, how to be incorporated into the power networks, meet in power grid
High voltage needs to be still sixty-four dollar question.Currently, a large amount of boost converter is developed and meets these applications, not
In same converter, traditional BOOST converter theoretically can improve voltage gain by improving duty ratio.But it is practical
In, due to the limitation of parasitic parameter, very high voltage gain cannot achieve.According to the topological structure of cascade connection type, device
Number of packages amount increases caused inefficient problem can highlight again.
It is disclosed in the Chinese patent application file that application publication number is CN105391287A a kind of based on double coupling inductances
With zero input current ripple high-gain converter of single switch, which borrows coupling inductance and can get inductance high-gain, and
The duty ratio D and coupling inductance T of gain and switching tube2The secondary turn ratio N of original it is related, gain calculation formula is：G=(1+N)/
(1-D)2Although the program can realize wide gain, the gain promotion of the program is limited, in the feelings of higher gain demand
In condition, which cannot be satisfied high gain requirements.
Utility model content
The purpose of this utility model is to provide a kind of high-gain converter based on coupling inductance, further to promote change
The gain of parallel operation.The utility model provides a kind of power-supply system simultaneously.
To achieve the above object, the utility model includes following technical scheme.
Converter scheme one：This programme provides a kind of high-gain converter based on coupling inductance, including the first inductance and
Second inductance, second inductance are the coupling inductance being made of primary side winding and vice-side winding, one end of first inductance
The other end of anode for connecting input power, first inductance is separately connected the anode and second of the first fly-wheel diode
The anode of fly-wheel diode, the cathode of first fly-wheel diode connect the Same Name of Ends and the first capacitance of the primary side winding
One end, the other end of first capacitance are used to connect the cathode of input power, and the different name end of the primary side winding is separately connected
One end of switching tube, the cathode of the second fly-wheel diode, one end of the second capacitance and the 4th fly-wheel diode anode, it is described to open
The other end for closing pipe is used to connect the cathode of input power, and the other end of second capacitance is separately connected third fly-wheel diode
Anode and vice-side winding Same Name of Ends, the different name end of the vice-side winding is separately connected the cathode and of the 4th fly-wheel diode
The other end of one end of three capacitances, the third capacitance is separately connected the cathode and rectification module of third fly-wheel diode, described
The DC terminal of rectification module is the output end of the converter.
Two inductance involved in the high-gain converter that this programme provides, wherein the first inductance is conventional inductance, second
Inductance is the coupling inductance being made of primary side winding and vice-side winding, by the two inductance in conjunction with other related component structures
At circuit structure be just the high-gain converter that provides of this programme, therefore, the converter that this programme provides is relative to existing
For converter, gain is higher, disclosure satisfy that high gain requirements.Moreover, the converter is used by the second capacitance, third electricity
Hold, the voltage doubling unit of third fly-wheel diode and the 4th fly-wheel diode composition, boost capability gets a promotion, and reduces switch
The voltage stress of pipe and rectification module.In addition, the structure of converter does not increase additional switching tube, reduce to circuit control
Complexity, also reduce the loss of circuit, improve circuit efficiency.
Converter scheme two：On the basis of converter scheme one, the converter further includes clamp capacitor and clamper two
Pole pipe, the different name end of the primary side winding connect the anode of the clamp diode, and the cathode of the clamp diode connects institute
State one end of the second capacitance, the anode and the clamp capacitor of the 4th fly-wheel diode one end, the clamp capacitor it is another
Hold the cathode for connecting input power.
Clamp diode constitutes passive and nondestructive clamp circuit with clamp capacitor, for absorbing the energy of leakage inductance, to draw up
The peak voltage of switching tube, meanwhile, the reverse-recovery problems of diode are alleviated, using low specified device, to improve
Efficiency, moreover, clamp diode constitutes the circuit of coupling inductance leakage inductance energy release with clamp capacitor, by the energy circulation of leakage inductance
To output end, the efficiency of converter is greatly improved.
Converter scheme three：On the basis of converter scheme one or two, the rectification module is rectifier diode, described
The anode of rectifier diode connects the other end of the third capacitance, and the cathode of the rectifier diode connects output capacitance.
Converter scheme four：On the basis of converter scheme one or two, the switching tube is MOSFET pipes or IGBT
Pipe.
Converter scheme five：On the basis of converter scheme two, the gain M of the converterCCMCalculation formula is：
Wherein, D is the duty ratio of switching tube, and N is the turn ratio of the primary side winding and vice-side winding in coupling inductance.
1+2N-ND=1+N+ (1-D) N, since the duty ratio of switching tube is less than 1, then, 1-D is more than 0, in turn, 1+2N-
The numerical value ratio 1+N of ND is big, therefore, further illustrates increasing of the gain than existing converter of the converter of this programme offer
It is beneficial high.Moreover, N is bigger, gain for existing converter, promotion it is more apparent.
System schema one：This programme provides a kind of power-supply system, including input power and the high-gain based on coupling inductance
Converter, the converter include the first inductance and the second inductance, and second inductance is by primary side winding and vice-side winding group
At coupling inductance, one end of first inductance is used to connect the anode of input power, the other end point of first inductance
The anode of the anode and the second fly-wheel diode of the first fly-wheel diode, the cathode connection of first fly-wheel diode are not connected
The other end of one end of the Same Name of Ends of the primary side winding and the first capacitance, first capacitance is used to connect the negative of input power
Pole, the different name end of the primary side winding be separately connected one end of switching tube, the cathode of the second fly-wheel diode, the second capacitance one
The anode at end and the 4th fly-wheel diode, the other end of the switching tube are used to connect the cathode of input power, second electricity
The other end of appearance is separately connected the anode of third fly-wheel diode and the Same Name of Ends of vice-side winding, the different name end of the vice-side winding
It is separately connected one end of the cathode and third capacitance of the 4th fly-wheel diode, the other end of the third capacitance is separately connected third
The cathode and rectification module of fly-wheel diode, the DC terminal of the rectification module are the output end of the converter.
System schema two：On the basis of system schema one, the converter further includes clamp capacitor and clamp diode,
The different name end of the primary side winding connects the anode of the clamp diode, the cathode connection described second of the clamp diode
One end of capacitance, the 4th fly-wheel diode anode and the clamp capacitor one end, the other end of the clamp capacitor is used for
Connect the cathode of input power.
System schema three：On the basis of system schema one or two, the rectification module is rectifier diode, the rectification
The anode of diode connects the other end of the third capacitance, and the cathode of the rectifier diode connects output capacitance.
System schema four：On the basis of system schema one or two, the switching tube is that MOSFET is managed or IGBT is managed.
System schema five：On the basis of system schema two, the gain M of the converterCCMCalculation formula is：
Wherein, D is the duty ratio of switching tube, and N is the turn ratio of the primary side winding and vice-side winding in coupling inductance.
Description of the drawings
Fig. 1 is the circuit structure diagram of high-gain converter the first embodiment based on coupling inductance；
Fig. 2 is the equivalent circuit diagram of high-gain converter the first embodiment based on coupling inductance；
Fig. 3 is converter modal graph；
Fig. 4 is the isoboles of the first switch mode of converter；
Fig. 5 is the isoboles of second of switch mode of converter；
Fig. 6 is the isoboles of the third switch mode of converter；
Fig. 7 is the isoboles of the 4th kind of switch mode of converter；
Fig. 8 is the isoboles of the 5th kind of switch mode of converter；
Fig. 9 is the isoboles of the 6th kind of switch mode of converter；
Figure 10 is the wave of the electric current of the voltage at switching tube grid source both ends of converter, the electric current of switching tube and clamp diode
Shape figure；
Figure 11 is the voltage at switching tube grid source both ends, the electric current of coupling inductance vice-side winding and output rectification two of converter
The oscillogram of the electric current of pole pipe；
Figure 12 is the voltage at the switching tube grid source both ends of converter, sustained diode3The waveform of the voltage and current at both ends
Figure；
Figure 13 is the oscillogram of the voltage at the switching tube grid source both ends of converter, output voltage and output voltage；
Figure 14 is the circuit structure diagram of second of embodiment of high-gain converter based on coupling inductance.
Specific implementation mode
Power-supply system embodiment one
The present embodiment provides a kind of power-supply systems, including two large divisions, are input power V respectivelyinWith one kind based on coupling
The high-gain converter of inductance.Due to input power VinBelong to routine techniques, just no longer illustrates here, the present embodiment emphasis
High-gain converter is specifically described.
High-gain converter is a New Cascading type high-gain DC/DC converters, if applied it in photovoltaic system,
So, pass through the ratio of gains of raising converter, it will be able to which the output voltage for promoting photovoltaic system provides institute for photovoltaic system is grid-connected
Required voltage.
As shown in Figure 1, converter includes inductance L1, the second inductance, switching tube S, clamp capacitor CbWith clamp diode Db,
Wherein, the second inductance is coupling inductance, by primary side winding L2With vice-side winding L3The coupling inductance of composition.In order to claim
Book mutually correlates, and the first fly-wheel diode, the second fly-wheel diode, third fly-wheel diode and the 4th fly-wheel diode are respectively continuous
Flow diode D1, sustained diode2, sustained diode3And sustained diode4, the first capacitance, the second capacitance and third capacitance
Respectively capacitance C1, capacitance C2With capacitance C3.In the converter, capacitance C2, capacitance C3, sustained diode3And sustained diode4
Form a voltage doubling unit.
Inductance L1One end connection input power VinAnode, inductance L1The other end be separately connected sustained diode1's
Anode and sustained diode2Anode, sustained diode1Cathode connection primary side winding L2Same Name of Ends and capacitance C1One
End, capacitance C1Other end connection input power VinCathode, primary side winding L2Different name end be separately connected the one of switching tube S
End, sustained diode2Cathode and clamp diode DbAnode, clamp diode DbCathode connection capacitance C2One end,
Sustained diode4Anode and clamp capacitor CbOne end, the other end connection input power V of switching tube SinCathode, clamper
Capacitance CbOther end connection input power VinCathode, capacitance C2The other end be separately connected sustained diode3Anode and
Vice-side winding L3Same Name of Ends, vice-side winding L3Different name end be separately connected sustained diode4Cathode and capacitance C3One end,
Capacitance C3The other end be separately connected sustained diode3Cathode and rectification module, and the DC terminal of the rectification module is exactly to become
The output end of parallel operation.Clamp diode DbWith clamp capacitor CbPassive and nondestructive clamp circuit is constituted, for absorbing the energy of leakage inductance,
To the peak voltage for the switching tube S that drawn up, meanwhile, the reverse-recovery problems of diode are alleviated, using low specified device,
To improve efficiency, moreover, clamp diode DbWith clamp capacitor CbThe circuit for constituting the release of coupling inductance leakage inductance energy, will leak
The energy circulation of sense greatly improves the efficiency of converter to output end.
In the present embodiment, rectification module is with rectifier diode D0For, then, capacitance C3Other end connection rectification two pole
Pipe D0Anode, rectifier diode D0Cathode be separately connected output capacitance CoOne end and load resistance R one end, output electricity
Hold CoThe other end connect input power V with the other end of load resistance RinCathode.
Moreover, in the present embodiment, switching tube S is that MOSFET is managed or IGBT is managed.
As shown in Fig. 2, the equivalent circuit of coupling inductance is magnetizing inductance LM, leakage inductance LK, primary side ideal transformer N1And pair
Side ideal transformer N2, the electric current of input power is iin, the voltage of input power is Vin, coupling inductance primary side winding L2Excitation
Electric current isCoupling inductance primary side winding L2Voltage beCoupling inductance primary side winding L2Leakage inductance electric current beCoupling
Inductance vice-side winding L3Electric current beCoupling inductance vice-side winding L3Voltage beInductance L1Electric current beInductance L1
The voltage of both sides isExport rectifier diode D0Electric current beExport rectifier diode D0The voltage at both ends isStream
The electric current for crossing switching tube S is iS, the voltage for flowing through the both ends switching tube S is VS, sustained diode1Electric current beTwo pole of afterflow
Pipe D1The voltage at both ends isSustained diode2Electric current beSustained diode2The voltage at both ends isAfterflow two
Pole pipe D3Electric current beSustained diode3The voltage at both ends isSustained diode4Electric current beTwo pole of afterflow
Pipe D4The voltage at both ends isClamp diode DbElectric current beClamp diode DbVoltage beCapacitance C1Electricity
Stream isCapacitance C1The voltage at both ends isCapacitance C2Electric current beCapacitance C2The voltage at both ends isCapacitance C3Electricity
Stream isCapacitance C3The voltage at both ends isClamp capacitor CbElectric current beClamp capacitor CbVoltage beOutput electricity
Hold CoElectric current beOutput capacitance CoThe voltage at both ends isThe electric current of load resistance R is io。
Fig. 3 is the modal graph of converter, i.e., the oscillogram that each corresponding parameter changes over time.A cycle correspondent transform
One course of work of device, then, for any one period, the course of work of converter is divided into 6 switch mode, respectively
The first switch mode is described in detail below to the 6th kind of switch mode：
The first switchs mode, [t in corresponding diagram 30, t1], equivalent circuit is as shown in figure 4, t=t0Moment, switching tube S
Conducting, sustained diode1、D3、D4With clamp diode DbShutdown, sustained diode2With rectifier diode D0Conducting.Fig. 4 is
The path that electric current flows through, input power VinGive inductance L1Charging, capacitance C1Give coupling inductance primary side winding L2Charging.Meanwhile clamper
Capacitance CbWith capacitance C2、C3With coupling inductance vice-side winding L3Series connection, they are in the working condition of afterflow, are carried for load together
For energy.When flowing through rectifier diode D0Freewheel current when dropping to zero, which terminates, rectifier diode D0Realize zero current
Shutdown.
Second of switch the mode, [t in corresponding diagram 31, t2], equivalent circuit is as shown in figure 5, t=t1Moment, two pole of rectification
Pipe D0Shutdown, sustained diode1With clamp diode DbContinue to turn off, while sustained diode3And D4Conducting.Fig. 5 is electric current
The path flowed through, inductance L1Continue to store input power VinThe energy of offer, coupling inductance primary side winding L2Continue storage capacitors C1
The energy of offer.Coupling inductance vice-side winding L3Electric current start from scratch direction increase, and give capacitance C2And C3Charging, therefore, electricity
Hold C2And C3Parallel charging.In addition, sustained diode3And D4Realize zero current turning-on, the energy of load is by output capacitance CoIt carries
For.When switching tube S is turned off, which terminates.
The third switchs mode, [t in corresponding diagram 32, t3], equivalent circuit is as shown in fig. 6, t=t2Moment, switching tube S
Shutdown, sustained diode1With clamp diode DbForward conduction, sustained diode2Reversed cut-off.Fig. 6 is the road that electric current flows through
Diameter, due to clamp diode DbConducting is stored in energy transfer in leakage inductance to clamp capacitor Cb, therefore the voltage of switching tube S is not
In the presence of very high due to voltage spikes, the efficiency of converter is improved.In addition, coupling inductance vice-side winding L3Start afterflow, flows through
Sustained diode3And D4Electric current start to reduce, output capacitance CoIt continues as load and energy is provided.Input power VinWith inductance L1
Series connection, then with capacitance C1Parallel connection is clamp capacitor CbCharging, as clamp capacitor CbInput current be equal to flow through input power Vin
Electric current when, which terminates.
4th kind switchs the mode, [t in corresponding diagram 33, t4], equivalent circuit is as shown in fig. 7, t=t3Moment, switching tube S,
Sustained diode1、D2、D3、D4With clamp diode DbWorking condition before all keeping.Fig. 7 is the path that electric current flows through, stream
Cross capacitance C1Current direction change, capacitance C1Start to absorb energy, the energy of leakage inductance continues to be stored in clamp capacitor Cb
It is interior.Due to coupling inductance vice-side winding L3Afterflow, when flowing through sustained diode3And D4Electric current when being reduced to zero, the mode knot
Beam, at this point, sustained diode3And D4Realize zero-current switching.
5th kind switchs the mode, [t in corresponding diagram 34, t5], equivalent circuit is as shown in figure 8, t=t4Moment, two pole of afterflow
Pipe D3And D4Shutdown, rectifier diode D0Conducting.Fig. 8 is the path that electric current flows through, input power VinEnergy continue to be transferred to electricity
Hold C1On, clamp capacitor CbWith coupling inductance vice-side winding L3, capacitance C2And C3Output capacitance C is given in series connectionoEnergy is provided with load
Amount, therefore, capacitance C2And C3It is worked in the form of discharged in series.Meanwhile clamp capacitor CbCharging current reduce.Work as clamper
Capacitance CbCharging current when being reduced to zero, which terminates.
6th kind switchs the mode, [t in corresponding diagram 35, t6], equivalent circuit is as shown in figure 9, t=t5Moment, two pole of afterflow
Pipe D3、D4With clamp diode DbShutdown, rectifier diode D0Conducting.Fig. 9 is the path that electric current flows through, input power VinEnergy
Amount continues to be transferred to capacitance C1On, coupling inductance primary side winding L2Primary current be zero.Clamp capacitor CbWith coupling inductance pair side
Winding L3, capacitance C2And C3Output capacitance C is given in series connectionoEnergy is provided with load.When next switch periods start, the mode
Terminate.
By as follows to the actual conditions of the accomplished high-gain of analysis of converter operation principle above：
When switching tube S conductings, following equation is had according to second switch mode：
Following equation can be obtained according to the 4th switch mode：
Following equation can be obtained according to the 5th kind of switch mode and the 6th kind of switch mode：
To L1Row voltagesecond product equilibrium equation has：
To L2Row voltagesecond product equilibrium equation has：
It can obtain from the above analysis, according to above-mentioned equation, gain expressions are：
Wherein, D is the duty ratio of switching tube S, and N is the primary side winding L in coupling inductance2With vice-side winding L3Turn ratio.
Certainly, the present embodiment focuses on above-mentioned gain expressions, and does not lie in the specific derivation of the gain expressions.
When converter is according to the first switch mode to the 6th kind of switch Modality work, switching tube S grid source both ends in circuit
Voltage VGS, switching tube S electric current iS, clamp diode DbElectric currentCoupling inductance vice-side winding L3Electric currentIt exports whole
Flow diode D0Electric currentSustained diode3The voltage at both endsSustained diode3Electric currentInput voltage
Vin, output voltage VoWaveform be described in detail below：
In Figure 10, input voltage Vin=20V, output voltage Vo=200V, the voltage V at switching tube S grid source both endsGSVertical seat
It is designated as 20 volts/cell, the electric current i of switching tube SSOrdinate is 20 peaces/cell, clamp diode DbElectric currentOrdinate
For 10 peaces/cell.
In Figure 11, input voltage Vin=20V, output voltage Vo=200V, the voltage V at switching tube S grid source both endsGSVertical seat
It is designated as 20 volts/cell, coupling inductance vice-side winding L3Electric currentOrdinate is 10 peaces/cell, exports rectifier diode
D0Electric currentOrdinate is 5 peaces/cell.
In Figure 12, input voltage Vin=20V, output voltage Vo=200V, the voltage V at switching tube S grid source both endsGSVertical seat
It is designated as 20 volts/cell, sustained diode3The voltage at both endsOrdinate is 50 volts/cell, sustained diode3Electricity
StreamOrdinate is 5 peaces/cell.
In Figure 13, input voltage Vin=20V, output voltage Vo=200V, the voltage V at switching tube S grid source both endsGSVertical seat
It is designated as 20 volts/cell, input voltage VinOrdinate is 10 volts/cell, output voltage VoOrdinate is 200 volts/cell.
Therefore, converter uses voltage doubling unit (i.e. booster circuit), improves the boost capability of converter, reduces out
Close the voltage stress of pipe and output diode；Moreover, using lossless clamp circuit carrys out absorption cycle leakage inductance energy, effectively draw up
The peak voltage of switching tube, alleviates the reverse-recovery problems of diode, using low specified device, to improve efficiency.
In addition, the structure of converter does not increase additional switching tube, the complexity to circuit control is reduced, circuit is also reduced
Loss, improves circuit efficiency.
Specific embodiment is presented above, but the utility model is not limited to described embodiment.This practicality
Novel basic ideas are above-mentioned basic scheme, for those of ordinary skill in the art, introduction according to the present utility model,
The model, formula, parameter for designing various modifications do not need to spend creative work.The principles of the present invention are not being departed from
The scope of protection of the utility model is still fallen with the change, modification, replacement and modification carried out to embodiment in the case of spirit
It is interior.
Power-supply system embodiment two
The present embodiment provides a kind of power-supply systems, similarly, including two large divisions, it is input power V respectivelyinWith a kind of base
In the high-gain converter of coupling inductance.Unlike power-supply system embodiment one, the electricity of converter provided in this embodiment
Line structure does not include clamp diode DbWith clamp capacitor Cb, in addition to this, the converter provided with power-supply system embodiment one
Structure is identical, as shown in figure 14, wherein clamp diode DbWith clamp capacitor CbThe perfect Gain of converter is not influenced.And
As soon as the detailed process of each mode of the converter similarly, is no longer specifically introduced here with power-supply system embodiment.
Converter embodiment one
The present embodiment provides a kind of high-gain converters based on coupling inductance, since the converter is in above-mentioned power-supply system
It describes in detail as soon as having been given in embodiment, no longer illustrates here.
Converter embodiment two
The present embodiment provides a kind of high-gain converters based on coupling inductance, since the converter is in above-mentioned power-supply system
It has given and has described in detail in embodiment two, just no longer illustrated here.
Claims (8)
1. a kind of high-gain converter based on coupling inductance, which is characterized in that including the first inductance and the second inductance, described
Two inductance are the coupling inductance being made of primary side winding and vice-side winding, and one end of first inductance is for connecting input power
Anode, the other end of first inductance is separately connected the sun of the anode and the second fly-wheel diode of the first fly-wheel diode
Pole, the cathode of first fly-wheel diode connect one end of the Same Name of Ends and the first capacitance of the primary side winding, and described first
The other end of capacitance is used to connect the cathode of input power, the different name end of the primary side winding be separately connected one end of switching tube,
The cathode of second fly-wheel diode, one end of the second capacitance and the 4th fly-wheel diode anode, the other end of the switching tube
The other end of cathode for connecting input power, second capacitance is separately connected the anode of third fly-wheel diode and secondary side
The Same Name of Ends of winding, the different name end of the vice-side winding be separately connected the 4th fly-wheel diode cathode and third capacitance one
End, the other end of the third capacitance are separately connected the cathode and rectification module of third fly-wheel diode, the rectification module
DC terminal is the output end of the converter.
2. the high-gain converter according to claim 1 based on coupling inductance, which is characterized in that the converter also wraps
Clamp capacitor and clamp diode are included, the different name end of the primary side winding connects the anode of the clamp diode, the clamper
The cathode of diode connect one end of second capacitance, the 4th fly-wheel diode anode and the clamp capacitor one end,
The other end of the clamp capacitor is used to connect the cathode of input power.
3. the high-gain converter according to claim 1 or 2 based on coupling inductance, which is characterized in that the rectification mould
Block is rectifier diode, and the anode of the rectifier diode connects the other end of the third capacitance, the rectifier diode
Cathode connects output capacitance.
4. the high-gain converter according to claim 1 or 2 based on coupling inductance, which is characterized in that the switching tube
For MOSFET pipes or IGBT pipes.
5. a kind of power-supply system, including input power and the high-gain converter based on coupling inductance, which is characterized in that the change
Parallel operation includes the first inductance and the second inductance, and second inductance is the coupling inductance being made of primary side winding and vice-side winding,
One end of first inductance is used to connect the anode of input power, and the other end of first inductance is separately connected the first afterflow
The cathode of the anode of the anode of diode and the second fly-wheel diode, first fly-wheel diode connects the primary side winding
One end of Same Name of Ends and the first capacitance, the other end of first capacitance are used to connect the cathode of input power, the primary side around
The different name end of group is separately connected one end of switching tube, the cathode of the second fly-wheel diode, one end of the second capacitance and the 4th afterflow
The anode of diode, the other end of the switching tube are used to connect the cathode of input power, the other end point of second capacitance
Not Lian Jie the anode of third fly-wheel diode and the Same Name of Ends of vice-side winding, the different name end of the vice-side winding is separately connected the 4th
The other end of one end of the cathode and third capacitance of fly-wheel diode, the third capacitance is separately connected third fly-wheel diode
Cathode and rectification module, the DC terminal of the rectification module are the output end of the converter.
6. power-supply system according to claim 5, which is characterized in that the converter further includes clamp capacitor and clamper two
Pole pipe, the different name end of the primary side winding connect the anode of the clamp diode, and the cathode of the clamp diode connects institute
State one end of the second capacitance, the anode and the clamp capacitor of the 4th fly-wheel diode one end, the clamp capacitor it is another
Hold the cathode for connecting input power.
7. power-supply system according to claim 5 or 6, which is characterized in that the rectification module is rectifier diode, described
The anode of rectifier diode connects the other end of the third capacitance, and the cathode of the rectifier diode connects output capacitance.
8. power-supply system according to claim 5 or 6, which is characterized in that the switching tube is MOSFET pipes or IGBT
Pipe.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI694667B (en) * | 2019-06-04 | 2020-05-21 | 崑山科技大學 | High boost converter |
| CN112713769A (en) * | 2020-12-29 | 2021-04-27 | 广东电网有限责任公司电力科学研究院 | Single-switch Boost three-level converter based on Boost formula |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI694667B (en) * | 2019-06-04 | 2020-05-21 | 崑山科技大學 | High boost converter |
| CN112713769A (en) * | 2020-12-29 | 2021-04-27 | 广东电网有限责任公司电力科学研究院 | Single-switch Boost three-level converter based on Boost formula |
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