CN103904892B - Self-voltage-sharing two-tube high-gain converter and control method thereof - Google Patents
Self-voltage-sharing two-tube high-gain converter and control method thereof Download PDFInfo
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- CN103904892B CN103904892B CN201410156030.1A CN201410156030A CN103904892B CN 103904892 B CN103904892 B CN 103904892B CN 201410156030 A CN201410156030 A CN 201410156030A CN 103904892 B CN103904892 B CN 103904892B
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Abstract
The invention discloses a self-voltage-sharing two-tube high-gain converter. The self-voltage-sharing two-tube high-gain converter comprises an X type active network, a direct-current voltage source and a rectifier diode, and further comprises a symmetrical passive lossless clamping circuit, wherein the symmetrical passive lossless clamping circuit comprises a first clamping capacitor, a second clamping capacitor, a third clamping capacitor, a fourth clamping capacitor and a clamping diode, and the X type active network comprises a positive input end, a negative input end, a positive output end and a negative output end. The invention further discloses a control method of the self-voltage-sharing two-tube high-gain converter. According to the self-voltage-sharing two-tube high-gain converter, the size is small, dynamic voltage sharing can be achieved through a main power switch tube when the input voltage or the duty ratio or the load changes suddenly under the condition that inductances, the junction capacitances of switch tubes, and the switching speeds of the switch tubes are different, resonance of junction capacitors and inductors in a circuit is restrained, the voltage stress of the main power switch tube is reduced, and the conversion efficiency is improved.
Description
Technical field
The invention belongs to converters field, certainly all press two-tube high-gain converter particularly to a kind of
And its control method.
Background technology
Booster converter is widely used in industrial circle, such as the occasion such as generation of electricity by new energy, x ray machine, ups.Traditional boosting
Converter circuit topology is boost circuit, and the voltage gain of boost circuit increases with the increase of dutycycle, so in theory
And consider the equivalent series resistance (esr) in side circuit, the actual gain of boost circuit is not always with dutycycle
Increase and become big, therefore its boost capability is extremely limited, is not particularly suited for high-gain DC power conversion occasion.
A kind of existing active electric network transformator, its topological structure is as shown in figure 1, this transformator and traditional boost circuit
Compare although boost capability increases, but power switch pipe is in inductance size, switch junction capacitance, switching tube switching speed
Input voltage mutation, the dynamic voltage balancing of dutycycle mutation cannot be realized when inconsistent, and due to there is junction capacity and electricity
The resonance of sense, the voltage stress of power switch pipe is larger, have impact on the conversion efficiency of transformator.
Content of the invention
In order to solve the technical problem that above-mentioned background technology exists, the present invention is intended to provide a kind of all press two-tube high-gain certainly
Changer and its control method, realize high-gain, efficient power conversion.
In order to realize above-mentioned technical purpose, the technical scheme is that
One kind, from all pressing two-tube high-gain converter, comprises x type active electric network, direct voltage source and commutation diode, institute
State x type active electric network and comprise positive input terminal, negative input end, positive output end and negative output terminal, also comprise symmetrical passive and nondestructive clamping
Circuit, described symmetrical passive and nondestructive clamping circuit comprise the first clamping capacitance, the second clamping capacitance, the 3rd clamping capacitance, the 4th
Clamping capacitance and clamp diode；One end of described first clamping capacitance connects the positive pole of direct voltage source, its other end
Connect one end of the second clamping capacitance, the other end of the second clamping capacitance connects the negative pole of direct voltage source, described 3rd clamp
One end of electric capacity connects the negative electrode of commutation diode, and its other end connects one end of the 4th clamping capacitance, the 4th clamping capacitance
The other end connect the anode of clamp diode, the first clamping capacitance is connected with the common port of the second clamping capacitance the 3rd clamp electric
Hold the common port with the 4th clamping capacitance, the positive input terminal of described x type active electric network connects the positive pole of direct voltage source, and it is just
Outfan connects the anode of commutation diode, and its negative input end connects the negative pole of direct voltage source, and its negative output terminal connects
The negative electrode of clamp diode.
Wherein, above-mentioned x type active electric network comprises the first inductance, the second inductance, the first power switch pipe and the second power
Switching tube, the positive input terminal draining as x type active electric network of the first power switch pipe, its source electrode is as x type active electric network
Negative output terminal, as the positive output end of x type active electric network, its source electrode is active as x type for the drain electrode of the second power switch pipe
The negative input end of network, the drain electrode of the first power switch pipe is connected with the drain electrode of the second power switch pipe through the first inductance, and second
The source electrode of power switch pipe is connected with the source electrode of the first power switch pipe through the second inductance.
Wherein, above-mentioned first, second power switch pipe is managed for mos.
Wherein, above-mentioned first, second power switch pipe is managed for igbt.
The present invention also comprise a kind of for above-mentioned from the control method all pressing two-tube high-gain converter, the first power switch
Pipe is identical with the dutycycle of the second power switch pipe, and both are separated by conducting time delay, and is less than one this time delay
Individual switch periods.
Had the benefit that using technique scheme
(1) improvement of the present invention is to combine x type active electric network with symmetrical passive and nondestructive clamping circuit, main work(
Rate switching tube can realize input voltage when inductance size, switch junction capacitance, switching tube switching speed are inconsistent
Mutation or dutycycle mutation or or dynamic voltage balancing during load changing, the resonance of junction capacity and inductance in suppression circuit, reduce master
The voltage stress of power switch pipe, improves conversion efficiency.In addition, transformer configuration is simple, small volume；
(2) from emulation experiment, the changer of the present invention can reduce input and output electric current when using Interleaved control
Ripple is so that input and output capacitance reduces, cost-effective.
Brief description
Fig. 1 is a kind of circuit topology figure of existing active network boost converter.
Fig. 2 is the circuit structure diagram of the present invention.
Fig. 3 to Fig. 7 is followed successively by the present invention in input voltage vi=40v, first, second power switch pipe dutycycle is 0.5,
When load resistance is 100 ω, the first power switch tube voltage vs1, the second power switch tube voltage vs2, the first inductive current il1、
Second inductive current il2, output voltage voOscillogram.
Fig. 8 to Figure 10 is followed successively by the present invention when input voltage mutation, output loading mutation and dutycycle are mutated, power
The voltage oscillogram of switching tube.
Figure 11 is respectively the present invention under identical capacity with Figure 12, the input current ripple of Synchronization Control and Interleaved control
Figure.
Figure 13 is respectively the present invention under identical capacity with Figure 14, the ripple of the output voltage of Synchronization Control and Interleaved control
Figure.
In accompanying drawing primary symbols explanation: the l1: the first inductance, the l2: the second inductance, the s1: the first power switch pipe, s2: the
Two power switch pipes, the c1: the first clamping capacitance, the c2: the second clamping capacitance, the c3: the three clamping capacitance, the c4: the four clamping capacitance,
D1: commutation diode, d2: clamp diode.
Specific embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
The circuit structure diagram of the present invention as shown in Figure 2, one kind all presses two-tube high-gain converter to comprise the active net of x type certainly
Network, direct voltage source and commutation diode d1, also comprise symmetrical passive and nondestructive clamping circuit, and described x type active electric network includes
One inductance l1, the second inductance l2, the first power switch pipe s1 and the second power switch pipe s2, symmetrical passive and nondestructive clamping circuit
Comprise the first clamping capacitance c1, the second clamping capacitance c2, the 3rd clamping capacitance c3, the 4th clamping capacitance c4 and clamp diode
d2；One end of first inductance l1 connects the drain electrode of the first power switch pipe s1, and the other end of the first inductance l1 connects the second power
The drain electrode of switching tube s2, one end of the second inductance l2 connects the source electrode of the first power switch pipe s1, the other end of the second inductance l2
Connect the source electrode of the second power switch pipe s2, the drain electrode of the first power switch pipe s1 connects the positive pole of direct voltage source, the second work(
The source electrode of rate switching tube s2 connects the negative pole of direct voltage source；One end of first clamping capacitance c1 is just connecting direct voltage source
Pole, the other end of the first clamping capacitance c1 connects one end of the second clamping capacitance c2, and the other end of the second clamping capacitance c2 connects
The negative pole of direct voltage source, the anode of commutation diode d1 connects the drain electrode of the second power switch pipe s2, commutation diode d1's
Negative electrode connects one end of the 3rd clamping capacitance c3, and the other end of the 3rd clamping capacitance c3 connects one end of the 4th clamping capacitance c4,
The other end of the 4th clamping capacitance connects the anode of clamp diode d2, and the negative electrode of clamp diode d2 connects the first power switch
The source electrode of pipe s1, the first clamping capacitance c1 is connected the 3rd clamping capacitance c3 and the 4th clamp with the common port of the second clamping capacitance c2
The common port of electric capacity c4.Load resistance rlTwo ends connect the negative electrode of commutation diode d1 and the sun of clamp diode d2 respectively
Pole.
In the present embodiment, first, second power switch pipe is mos pipe or igbt pipe.
Present invention additionally comprises for controlling a kind of above-mentioned method from all pressing two-tube high-gain converter, described first power
Interleaved control, the dutycycle of the first power switch pipe and the second power switch pipe is adopted between switching tube and the second power switch pipe
Identical, and both are separated by conducting time delay, and it is less than switch periods this time delay.
Fig. 3 to Fig. 7 is active electric network changer with passive and nondestructive clamping circuit in input voltage vi=40v, first,
Second power switch pipe dutycycle is 0.5, when load resistance is 100 ω, the first power switch tube voltage vs1, the second power switch
Tube voltage vs2, the first inductive current il1, the second inductive current il2, output voltage voOscillogram.As we can see from the figure first
Power switch tube voltage vs1, the second power switch tube voltage vs2Achieve good voltage equalizing, the first power switch tube voltage
vs1, the second power switch tube voltage vs2, the first inductive current il1, the second inductive current il2There is not resonance, remain simultaneously yet
The higher advantage of primary circuit voltage gain.
When Fig. 8 to Figure 10 is followed successively by input voltage mutation, output loading mutation and dutycycle mutation, power switch pipe
Voltage oscillogram.First power switch tube voltage v as we can see from the figures1, the second power switch tube voltage vs2Achieve very well
Voltage equalizing it is seen that this circuit has good dynamic response function.
Under Figure 11 and Figure 12 respectively identical capacity Synchronization Control and Interleaved control input current ripple figure it is seen then that with
Synchronization Control is compared, and Interleaved control can reduce the ripple of input current, mitigates the pressure of input filter capacitor, using compared with little Rong
The electric capacity of amount can obtain preferable filter effect.
Under Figure 13 and Figure 14 respectively identical capacity the output voltage of Synchronization Control and Interleaved control ripple figure it is seen then that
Compared with Synchronization Control, Interleaved control can reduce the ripple of output voltage, mitigates the pressure of output filter capacitor, using less
The electric capacity of capacity can obtain preferable filter effect.
Above example technological thought only to illustrate the invention is it is impossible to limit protection scope of the present invention with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within the scope of the present invention
Within.
Claims (3)
1. one kind, from all pressing two-tube high-gain converter, comprises x type active electric network, direct voltage source and commutation diode, described x
Type active electric network comprise positive input terminal, negative input end, positive output end and negative output terminal it is characterised in that: also comprise symmetrically passive
Lossless Clamp Circuit, described symmetrical passive and nondestructive clamping circuit comprises the first clamping capacitance, the second clamping capacitance, the 3rd clamp electricity
Appearance, the 4th clamping capacitance and clamp diode；One end of described first clamping capacitance connects the positive pole of direct voltage source, it
The other end connects one end of the second clamping capacitance, and the other end of the second clamping capacitance connects the negative pole of direct voltage source, and described the
One end of three clamping capacitances connects the negative electrode of commutation diode, and its other end connects one end of the 4th clamping capacitance, the 4th pincers
The other end of position electric capacity connects the anode of clamp diode, and the first clamping capacitance is connected the 3rd with the common port of the second clamping capacitance
Clamping capacitance and the common port of the 4th clamping capacitance, the positive input terminal of described x type active electric network connects the positive pole of direct voltage source,
Its positive output end connects the anode of commutation diode, and its negative input end connects the negative pole of direct voltage source, its negative output
End connects the negative electrode of clamp diode；Described x type active electric network comprise the first inductance, the second inductance, the first power switch pipe with
And second power switch pipe, as the positive input terminal of x type active electric network, its source electrode is as x for the drain electrode of the first power switch pipe
The negative output terminal of type active electric network, the positive output end draining as x type active electric network of the second power switch pipe, its source electrode is made
For the negative input end of x type active electric network, the drain electrode draining through the first inductance and the second power switch pipe of the first power switch pipe
Connect, the source electrode of the second power switch pipe is connected with the source electrode of the first power switch pipe through the second inductance；Described first power is opened
Close pipe identical with the dutycycle of the second power switch pipe, and both are separated by conducting time delay, and be less than this time delay
One switch periods.
2. according to claim 1 a kind of from all pressing two-tube high-gain converter it is characterised in that: described first, second work(
Rate switching tube is managed for mos.
3. according to claim 1 a kind of from all pressing two-tube high-gain converter it is characterised in that: described first, second work(
Rate switching tube is managed for igbt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156030.1A CN103904892B (en) | 2014-04-18 | 2014-04-18 | Self-voltage-sharing two-tube high-gain converter and control method thereof |
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| CN201410156030.1A CN103904892B (en) | 2014-04-18 | 2014-04-18 | Self-voltage-sharing two-tube high-gain converter and control method thereof |
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| CN103904892B true CN103904892B (en) | 2017-01-25 |
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| CN108712076A (en) * | 2018-06-21 | 2018-10-26 | 哈尔滨理工大学 | A kind of fuel cell car DC/DC transformer configurations and its control method |
| WO2020239327A1 (en) * | 2019-05-31 | 2020-12-03 | Pepperl+Fuchs Se | A power conditioning circuit |
| CN113691105B (en) * | 2021-07-28 | 2024-05-24 | 漳州科华技术有限责任公司 | Balance bridge voltage equalizing control method and power supply |
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| US6507174B1 (en) * | 2001-09-06 | 2003-01-14 | Koninklijke Philips Electronics N.V. | Voltage regulator with clamping circuit |
| CN100358226C (en) * | 2005-08-08 | 2007-12-26 | 南京航空航天大学 | Single switch double output booster converter |
| CN103701345B (en) * | 2013-12-30 | 2016-05-25 | 阳光电源股份有限公司 | A kind of five-electrical level inverter |
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