CN205945525U - DC DC converter based on full -bridge contravariant - Google Patents
DC DC converter based on full -bridge contravariant Download PDFInfo
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- CN205945525U CN205945525U CN201620828902.9U CN201620828902U CN205945525U CN 205945525 U CN205945525 U CN 205945525U CN 201620828902 U CN201620828902 U CN 201620828902U CN 205945525 U CN205945525 U CN 205945525U
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Abstract
DC DC converter based on full -bridge contravariant including an inverter circuit, the 2nd inverter circuit, the 3rd inverter circuit and rectifier circuit, still includes transformer and rectifier circuit, an inverter circuit, the 2nd inverter circuit, the 3rd inverter circuit's input termination DC power supply, its output establish ties and are in the same place and insert the former limit of transformer, and a rectifier circuit is connected on the vice limit of transformer, is the DC voltage with the alternating voltage transform, accomplish DC DC power conversion, an inverter circuit includes an electrolytic capacitor, first contrary type switch, contrary type switch, contrary type switch, the contrary type switch of leading of fourth of leading of third of leading of second of leading.
Description
Technical field
This utility model is related to Technics of Power Electronic Conversion technical field, in particular it relates to a kind of DC-DC based on full-bridge inverting
Changer.
Background technology
DC-DC power converter is a kind of device for converting electric energy, and a kind of unidirectional current with specific voltage is changed into tool
There is the unidirectional current of another kind of specific voltage.Traditional DC-DC conversion circuit has Buck circuit, Boost circuit, Buck-Boost electricity
The non-isolation type circuit such as road, Cuk circuit, and the isolated form such as forward converter, circuit of reversed excitation, full-bridge circuit and full-bridge circuit electricity
Road.
Find through the retrieval to prior art, the research to DC-DC converter at present is concentrated mainly on Buck, Boost
Deng on circuit and bidirectional DC-DC converter.Lin Weiming et al. was in 2012《Proceedings of the CSEE》On propose one
Plant the two-way large velocity ratio DC-DC switch converters changing one circle control strategy, coupling inductance is introduced non-isolated by this changer
It is achieved that the lifting of input and output voltage large velocity ratio and efficiency, this changer also achieves effective control to bidirectional DC-DC converter
With the dynamic response capability improving load；A kind of band isolation transformation is proposed in army's utility model patent disclosed in 2012
The multilevel photovoltaic grid-connected inverter of device T1, by preposition DC-DC converter, High ireguency SPWM modulation circuit, isolating transformer T1, whole
Stream unit and filter unit composition, decrease the loss of switching device, have reached very high conversion efficiency.
In sum, the exploration to DC-DC voltage changer is a lot of at present, but structure and control strategy are often very multiple
Miscellaneous, and the ability that multivoltage is entered with line translation is slightly not enough.
With the popularization of practical application, design one kind and multiple DC voltages can be entered with line translation, isolation input outfan
And output voltage adjustable DC-DC power converter becomes a direction being worth research.
Utility model content
The defect existing for prior art, this utility model provides a kind of DC-DC converter based on full-bridge inverting.
DC-DC converter based on full-bridge inverting described in the utility model, including the first inverter circuit, the second inversion electricity
Road, the 3rd inverter circuit and rectification circuit, additionally include transformator and rectification circuit；Described first inverter circuit, second inverse
Become the input termination DC source of circuit, the 3rd inverter circuit, its outfan is cascaded and accesses the former limit of transformator,
Transformer secondary connects a rectification circuit, alternating voltage is transformed to DC voltage, completes DC-DC power converter；Described straight
Stream power supply includes the first DC source, the second DC source, the 3rd DC source；Described first inverter circuit includes the first electrolysis
Electric capacity, first against conductivity type switch, second against conductivity type switch, the 3rd against conductivity type switch, cold limbs conductivity type switch, the first electrochemical capacitor
Positive pole connect the first DC power anode and first against conductivity type switch drain electrode, first against conductivity type switch source electrode connect second
The drain electrode of inverse conductivity type switch, second connects the negative pole of the first electrochemical capacitor against the source electrode that conductivity type switchs, and the 3rd against conductivity type switch
The positive pole of drain electrode connection the first electrochemical capacitor, the 3rd drain electrode switching against the source electrode connection cold limbs conductivity type of conductivity type switch, the 4th
The source electrode of inverse conductivity type switch connects the negative pole of the first electrochemical capacitor.
Second inverter circuit described in the utility model includes：Second electrochemical capacitor, the 5th against conductivity type switch, the 6th against conductivity type
Switch, the 7th against conductivity type switch, the 8th against conductivity type switch；The positive pole of the second electrochemical capacitor connects the positive pole of the second DC source,
The negative pole of the second electrochemical capacitor connects the negative pole of the second DC source, and the 5th connects the second electrochemical capacitor against the drain electrode that conductivity type switchs
Positive pole, the 5th against conductivity type switch source electrode connect the 6th against conductivity type switch drain electrode, the 6th against conductivity type switch source electrode connect
The negative pole of the second electrochemical capacitor, the 7th connects the positive pole of the second electrochemical capacitor against draining of conductivity type switch, and the 7th against conductivity type switch
Source electrode connect the 8th against conductivity type switch drain electrode, the 8th against conductivity type switch source electrode connect the second electrochemical capacitor negative pole.
3rd inverter circuit described in the utility model includes：3rd electrochemical capacitor, the 9th against conductivity type switch, the tenth against conductivity type
Switch, the 11st against conductivity type switch, the 12nd against conductivity type switch；3rd electrochemical capacitor positive pole is just connecting the 3rd DC source
Pole, negative pole connects the negative pole of the 3rd DC source, and the 9th connects the positive pole of the 3rd electrochemical capacitor against draining of conductivity type switch, and the 9th
The source electrode of inverse conductivity type switch connects the tenth drain electrode switching against conductivity type, and the tenth connects the 3rd electrochemical capacitor against the source electrode that conductivity type switchs
Negative pole, the 11st connects the positive pole of the 3rd electrochemical capacitor against the drain electrode of conductivity type switch, the 11st against conductivity type switch source electrode even
Connect the 12nd drain electrode switching against conductivity type, the 12nd connects the negative pole of the 3rd electrochemical capacitor against the source electrode that conductivity type switchs.
Described in the utility model first is of the same name with transformer primary side against the junction point of conductivity type switch against conductivity type switch and second
End is connected, and first is connected with transformer primary side Same Name of Ends against conductivity type switch and second against the junction point of conductivity type switch, and the 3rd against leading
Type switch is connected against conductivity type switch and the 6th against the junction point of conductivity type switch with the 5th with the junction point of cold limbs conductivity type switch, the
Seven against conductivity type switch and the 8th against the junction point of conductivity type switch and the 9th against conductivity type switch and the tenth against the junction point of conductivity type switch
It is connected, the 11st junction point switching against conductivity type with the 12nd against conductivity type switch is connected with transformer primary side different name end.
Rectification circuit described in the utility model includes the first diode, the second diode, the 3rd diode, the four or two pole
Pipe, the 4th electrochemical capacitor and resistance, the anode of described first diode and transformer secondary Same Name of Ends and the moon of the second diode
Extremely connected, the negative electrode of the negative electrode of the first diode and the 3rd diode, the positive pole of the 4th electrochemical capacitor, one end of resistance are connected,
The negative electrode of the 4th diode is connected with the anode of the 3rd diode, transformer secondary different name end, the anode of the 4th diode and
The anode of two diodes, the negative pole of the 7th electrochemical capacitor, the other end of resistance are connected.
First electrochemical capacitor described in the utility model, the second electrochemical capacitor, the 3rd electrochemical capacitor parameter all consistent.
Described in the utility model first switchs against conductivity type, second switchs against conductivity type, the 3rd switchs against conductivity type, cold limbs conductivity type
Switch, the 5th against conductivity type switch, the 6th against conductivity type switch, the 7th against conductivity type switch, the 8th against conductivity type switch, the 9th open against conductivity type
Close, the tenth against conductivity type switch, the 11st against conductivity type switch, the 12nd against conductivity type switch parameter all consistent.
Compared with prior art, this utility model has following beneficial effect：
1st, carry out lifting press operation using transformator T1, isolated input/output terminal simultaneously, increased safety.
2nd, multiple DC voltages can be converted into a DC voltage, Simultaneous Switching device reduces, reduce manufacturing cost and
Fault rate.
3rd, circuit topology and control strategy simple it is easy to popularization and application.
Brief description
Fig. 1 is the circuit theory diagrams of embodiment described in the utility model.
Fig. 2 is each inverse conductivity type switch gate pulse signals sequential chart described in the utility model and primary voltage of transformer waveform
Figure.
Specific embodiment
With reference to specific embodiment, this utility model is described in detail.Following examples will be helpful to this area
Technical staff further understands this utility model, but does not limit this utility model in any form.It should be pointed out that to ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, some changes and improvements can also be made.
These broadly fall into protection domain of the present utility model.
As shown in Figure 1 to Figure 2, the DC-DC converter based on full-bridge inverting described in the utility model, including the first inversion electricity
Road 1, the second inverter circuit 2, the 3rd inverter circuit 3 and rectification circuit 5, additionally include transformator T1 and rectification circuit 5；Described
First inverter circuit 1, the second inverter circuit 2, the input termination DC source of the 3rd inverter circuit 3, its outfan is connected on one
Play and access the former limit of transformator T1, transformator T1 secondary connects a rectification circuit 5, and alternating voltage is transformed to unidirectional current
Pressure, completes DC-DC power converter；Described DC source includes the first DC source U1, the second DC source U2, the 3rd unidirectional current
Source U3；Described first inverter circuit 1 include the first electrochemical capacitor E1, first against conductivity type switch S1, second against conductivity type switch S2, the
Three against conductivity type switch S3, cold limbs conductivity type switch S4, the positive pole of the first electrochemical capacitor E1 connect the first DC source U1 positive pole and
First against conductivity type switch S1 drain electrode, first against conductivity type switch S1 source electrode connect second against conductivity type switch S2 drain electrode, second
Inverse conductivity type switchs the negative pole of the source electrode connection first electrochemical capacitor E1 of S2, and the 3rd drain electrode switching S3 against conductivity type connects the first electrolysis
The positive pole of electric capacity E1, the 3rd source electrode switching S3 against conductivity type connects the drain electrode that cold limbs conductivity type switchs S4, and cold limbs conductivity type switchs
The source electrode of S4 connects the negative pole of the first electrochemical capacitor E1.
Second inverter circuit 2 described in the utility model includes：Second electrochemical capacitor E2, the 5th against conductivity type switch S5, the 6th
Inverse conductivity type switch S6, the 7th against conductivity type switch S7, the 8th switch S8 against conductivity type；It is straight that the positive pole of the second electrochemical capacitor E2 connects second
The positive pole of stream power supply U2, the negative pole of the second electrochemical capacitor E2 connects the negative pole of the second DC source U2, and the 5th switchs S5 against conductivity type
Drain electrode connect the second electrochemical capacitor E2 positive pole, the 5th against conductivity type switch S5 source electrode connect the 6th against conductivity type switch S6 leakage
Pole, the 6th source electrode switching S6 against conductivity type connects the negative pole of the second electrochemical capacitor E2, and the 7th drain electrode switching S7 against conductivity type connects
The positive pole of the second electrochemical capacitor E2, the 7th source electrode switching S7 against conductivity type connects the 8th drain electrode switching S8 against conductivity type, and the 8th is inverse
Conductivity type switchs the negative pole of the source electrode connection second electrochemical capacitor E2 of S8.
3rd inverter circuit 3 described in the utility model includes：3rd electrochemical capacitor E3, the 9th against conductivity type switch S9, the tenth
Inverse conductivity type switch S10, the 11st against conductivity type switch S11, the 12nd switch S12 against conductivity type；3rd electrochemical capacitor E3 positive pole connects
The positive pole of the 3rd DC source U3, negative pole connects the negative pole of the 3rd DC source U3, and the 9th drain electrode switching S9 against conductivity type connects
The positive pole of the 3rd electrochemical capacitor E3, the 9th source electrode switching S9 against conductivity type connects the tenth drain electrode switching S10 against conductivity type, and the tenth is inverse
Conductivity type switchs the negative pole of source electrode connection the 3rd electrochemical capacitor E3 of S10, and the 11st drain electrode switching S11 against conductivity type connects the 3rd electricity
Solution electric capacity E3 positive pole, the 11st against conductivity type switch S11 source electrode connect the 12nd against conductivity type switch S12 drain electrode, the 12nd
Inverse conductivity type switchs the negative pole of source electrode connection the 3rd electrochemical capacitor E3 of S12.
Described in the utility model first is former with transformator T1 against the junction point of conductivity type switch S2 against conductivity type switch S1 and second
Side Same Name of Ends is connected, and first switchs, against conductivity type, junction point and the transformator T1 former limit Same Name of Ends phase that S1 and second switchs S2 against conductivity type
Even, the 3rd open against conductivity type against the junction point of conductivity type switch S3 and cold limbs conductivity type switch S4 and the 5th against conductivity type switch S5 and the 6th
The junction point closing S6 is connected, and the 7th switchs the junction point of S8 and the 9th against conductivity type switch S7 and the 8th against conductivity type switchs S9 against conductivity type
The junction point switching S10 against conductivity type with the tenth is connected, and the 11st switchs, against conductivity type, the company that S11 and the 12nd switchs S12 against conductivity type
Contact is connected with transformator T1 former limit different name end.
Rectification circuit 5 described in the utility model include the first diode D1, the second diode D2, the 3rd diode D3,
Four diode D4, the 4th electrochemical capacitor E4 and resistance R1, the anode of described first diode D1 and transformator T1 secondary Same Name of Ends
It is connected with the negative electrode of the second diode D2, the negative electrode of the first diode D1 and the negative electrode of the 3rd diode D3, the 4th electrochemical capacitor
The positive pole of E4, one end of resistance R1 are connected, the negative electrode of the 4th diode D4 and the anode of the 3rd diode D3, transformator T1 secondary
Different name end is connected, the anode of the anode of the 4th diode D4 and the second diode D2, the negative pole of the 7th electrochemical capacitor, resistance R1
The other end is connected.
First electrochemical capacitor E1 described in the utility model, the second electrochemical capacitor E2, the 3rd electrochemical capacitor E3 parameter homogeneous
Cause.
Described in the utility model first against conductivity type switch S1, second against conductivity type switch S2, the 3rd against conductivity type switch S3, the 4th
Inverse conductivity type switch S4, the 5th against conductivity type switch S5, the 6th against conductivity type switch S6, the 7th against conductivity type switch S7, the 8th open against conductivity type
Close S8, the 9th against conductivity type switch S9, the tenth against conductivity type switch S10, the 11st against conductivity type switch S11, the 12nd against conductivity type switch
The parameter of S12 is all consistent.
The type selecting of each components and parts above-mentioned in this example：
First DC source, the second DC source, the 3rd DC source U1, U2 and U3 are no more than 100V；
First electrochemical capacitor, the second electrochemical capacitor, the model parameter of the 3rd electrochemical capacitor E1, E2, E3 are 200V, 220 μ F,
Electrochemical capacitor is used for filtering.
Inverse conductivity type switching device S1-S12：200V, 30A/100 DEG C.
Transformator T1：No-load voltage ratio is made by oneself, and such as 1:1.
First-the four diode D1-D4：400V, 10A/100 DEG C, for rectification.
4th electrochemical capacitor E4：400V, 330 μ F, for voltage stabilizing.
Load resistance R1：20k Ω, 15W.
During whole circuit specific works：
The series connection of three inverter circuits, controls each inverter circuit against the time turning on and off of conductivity type switching device, such as
The multistage alternating voltage of similar sinusoidal voltage shown in S1-S12 in Fig. 2, can be gone out with inversion, as shown in the T1 in Fig. 2, this is multistage
Alternating voltage accesses transformator T1 and carries out buck conversion, the alternating voltage after the secondary output amplitude change of T1, then accesses whole
Carry out rectification, filtering and voltage stabilizing in current circuit 5, the DC voltage with certain stability can be obtained.
This utility model is applicable to need carry out DC-DC conversion to multiple DC voltages and needs between input and output
The occasion of electrical isolation.This utility model circuit topology is simple, and control strategy is simple, and output voltage adjustable extent is big, has very
Good using value.
Above specific embodiment of the utility model is described.It is to be appreciated that this utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or change,
This has no effect on flesh and blood of the present utility model.Spy in the case of not conflicting, in embodiments herein and embodiment
Levy and can arbitrarily be mutually combined.
Claims (7)
1. the DC-DC converter based on full-bridge inverting, including the first inverter circuit, the second inverter circuit, the 3rd inverter circuit and
Rectification circuit, is characterized in that, also includes transformator and rectification circuit；Described first inverter circuit, the second inverter circuit, the 3rd inverse
Become the input termination DC source of circuit, its outfan is cascaded and accesses the former limit of transformator, and transformer secondary is even
Connect a rectification circuit, alternating voltage is transformed to DC voltage, complete DC-DC power converter；Described DC source includes
One DC source, the second DC source, the 3rd DC source；Described first inverter circuit includes the first electrochemical capacitor, first inverse
Conductivity type switchs, second switchs against conductivity type, the 3rd switchs against conductivity type switch, cold limbs conductivity type, and the positive pole of the first electrochemical capacitor connects
First DC power anode and the first drain electrode switching against conductivity type, first connects second against conductivity type switch against the source electrode that conductivity type switchs
Drain electrode, second connects the negative pole of the first electrochemical capacitor against the source electrode of conductivity type switch, and the 3rd connects the against the drain electrode of conductivity type switch
The positive pole of one electrochemical capacitor, the 3rd drain electrode switching against the source electrode connection cold limbs conductivity type of conductivity type switch, cold limbs conductivity type switchs
Source electrode connect the first electrochemical capacitor negative pole.
2. the DC-DC converter based on full-bridge inverting as claimed in claim 1, is characterized in that：Second inverter circuit includes：The
Two electrochemical capacitors, the 5th against conductivity type switch, the 6th against conductivity type switch, the 7th against conductivity type switch, the 8th against conductivity type switch；Second electricity
The positive pole of solution electric capacity connects the positive pole of the second DC source, and the negative pole of the second electrochemical capacitor connects the negative pole of the second DC source,
5th connects the positive pole of the second electrochemical capacitor against draining of conductivity type switch, and the 5th connects the 6th against conductivity type against the source electrode that conductivity type switchs
The drain electrode of switch, the 6th connects the negative pole of the second electrochemical capacitor against the source electrode that conductivity type switchs, and the 7th connects against the drain electrode that conductivity type switchs
Connect the positive pole of the second electrochemical capacitor, the 7th drain electrode switching against the source electrode connection the 8th of conductivity type switch against conductivity type, the 8th against conductivity type
The source electrode of switch connects the negative pole of the second electrochemical capacitor.
3. the DC-DC converter based on full-bridge inverting as claimed in claim 1 or 2, is characterized in that：3rd inverter circuit bag
Include：3rd electrochemical capacitor, the 9th against conductivity type switch, the tenth against conductivity type switch, the 11st against conductivity type switch, the 12nd open against conductivity type
Close；3rd electrochemical capacitor positive pole connects the positive pole of the 3rd DC source, and negative pole connects the negative pole of the 3rd DC source, and the 9th inverse leads
The drain electrode that type switchs connects the positive pole of the 3rd electrochemical capacitor, the 9th leakage switching against the source electrode connection the tenth of conductivity type switch against conductivity type
Pole, the tenth connects the negative pole of the 3rd electrochemical capacitor against the source electrode that conductivity type switchs, and the 11st connects the 3rd against the drain electrode that conductivity type switchs
The positive pole of electrochemical capacitor, the 11st drain electrode switching against conductivity type against the source electrode connection the 12nd of conductivity type switch, the 12nd against conductivity type
The source electrode of switch connects the negative pole of the 3rd electrochemical capacitor.
4. the DC-DC converter based on full-bridge inverting as claimed in claim 1, is characterized in that：Described first against conductivity type switch
The junction point switching against conductivity type with second is connected with transformer primary side Same Name of Ends, and first against conductivity type switch and second against conductivity type switch
Junction point be connected with transformer primary side Same Name of Ends, the 3rd against conductivity type switch and cold limbs conductivity type switch junction point inverse with the 5th
Conductivity type switch and the 6th against conductivity type switch junction point be connected, the 7th against conductivity type switch and the 8th against conductivity type switch junction point and
9th junction point switching against conductivity type with the tenth against conductivity type switch is connected, and the 11st against conductivity type switch and the 12nd against conductivity type switch
Junction point be connected with transformer primary side different name end.
5. the DC-DC converter based on full-bridge inverting as claimed in claim 1, is characterized in that：Described rectification circuit includes
One diode, the second diode, the 3rd diode, the 4th diode, the 4th electrochemical capacitor and resistance, described first diode
Anode is connected with the negative electrode of transformer secondary Same Name of Ends and the second diode, the moon of the negative electrode of the first diode and the 3rd diode
Pole, the positive pole of the 4th electrochemical capacitor, one end of resistance are connected, the negative electrode of the 4th diode and the anode of the 3rd diode, transformation
Device secondary different name end is connected, the anode of the 4th diode and the anode of the second diode, the negative pole of the 7th electrochemical capacitor, resistance
The other end is connected.
6. the DC-DC converter based on full-bridge inverting as claimed in claim 3, is characterized in that：Described first electrochemical capacitor,
Two electrochemical capacitors, the 3rd electrochemical capacitor parameter all consistent.
7. the DC-DC converter based on full-bridge inverting as claimed in claim 5, is characterized in that：Described first against conductivity type switch,
Second against conductivity type switch, the 3rd against conductivity type switch, cold limbs conductivity type switch, the 5th against conductivity type switch, the 6th against conductivity type switch, the
Seven against conductivity type switch, the 8th against conductivity type switch, the 9th against conductivity type switch, the tenth against conductivity type switch, the 11st against conductivity type switch, the
12 is all consistent against the parameter of conductivity type switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620828902.9U CN205945525U (en) | 2016-07-29 | 2016-07-29 | DC DC converter based on full -bridge contravariant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620828902.9U CN205945525U (en) | 2016-07-29 | 2016-07-29 | DC DC converter based on full -bridge contravariant |
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| CN205945525U true CN205945525U (en) | 2017-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407668A (en) * | 2018-01-29 | 2018-08-17 | 新日(无锡)发展有限公司 | A kind of power supply system for electric vehicle |
-
2016
- 2016-07-29 CN CN201620828902.9U patent/CN205945525U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407668A (en) * | 2018-01-29 | 2018-08-17 | 新日(无锡)发展有限公司 | A kind of power supply system for electric vehicle |
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