CN207382210U - A kind of series parallel resonance inverter circuit for thering is second harmonic to inhibit branch - Google Patents
A kind of series parallel resonance inverter circuit for thering is second harmonic to inhibit branch Download PDFInfo
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- CN207382210U CN207382210U CN201721052908.2U CN201721052908U CN207382210U CN 207382210 U CN207382210 U CN 207382210U CN 201721052908 U CN201721052908 U CN 201721052908U CN 207382210 U CN207382210 U CN 207382210U
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Abstract
The utility model provides a kind of series parallel resonance inverter circuit for having second harmonic to inhibit branch, the series resonance branch inhibited including series resonance chamber, parallel resonance chamber, E class inverse switch groups and second harmonic, wherein, the input terminal of the E classes inverse switch group is connected to DC voltage input end, the series resonance branch that the output terminal of the E classes inverse switch group inhibits respectively with the series resonance chamber and second harmonic is connected, and the output terminal of the series resonance chamber is connected with the parallel resonance chamber.The beneficial effects of the utility model are：Based on E class inverter structures, the advantages of can inheriting the series parallel resonance inverter circuit of E class inversions, second harmonic can be eliminated by L C series resonances branch by having, and reduced the second harmonic in output voltage, kept rectification side current-symmetrical.
Description
Technical field
The utility model is related to series parallel resonance inverter circuit more particularly to a kind of string for thering is second harmonic to inhibit branch simultaneously
Join resonance inversion circuit.
Background technology
Traditional series parallel resonance inverter circuit is illustrated in fig. 1 shown below, including series resonance chamber LSAnd CS, parallel resonance chamber LP
And CP, half-bridge or full bridge inverter.Full bridge inverter during work（MH1, MH2, ML1, ML2）Rectangular wave is generated, using string simultaneously
Join resonator, retain fundametal compoment and filter out the output voltage that higher hamonic wave obtains approaching sine.Also have be illustrated in fig. 2 shown below based on
The series parallel resonance inverter circuit of E class inverter structures, circuit remain LS, CS, LPAnd CPThe resonator of composition, and full-bridge is opened
Guan Guan（MH1, MH2, ML1, ML2）Replace with E class inverter structures（M0, LN, CN）.
In traditional series parallel resonance inverter circuit（Fig. 1）, due to using full bridge structure, switch tube voltage waveform
ZVS is unsatisfactory in most of loading range, therefore has larger switching loss, so limiting in high-frequency inverter circuit
Using；And input current is discontinuous, there is larger electromagnetic interference.Series parallel resonance inverter circuit based on E class inversions（Figure
2）, switch tube voltage electric current meets ZVS and ZDS below figures 3, so as to being suitable for the application of high-frequency inversion.But due to Vds
Contain higher second harmonic in waveform（Fig. 4）If it is inclined to generate transformer current there are transformer in follow-up rectification circuit
The problem of putting increases transformer capacity demand.
The content of the invention
In order to solve the problems in the prior art, the utility model provides a kind of string for having second harmonic to inhibit branch simultaneously
Join resonance inversion circuit.
The utility model provides a kind of series parallel resonance inverter circuit for having second harmonic to inhibit branch, humorous including connecting
Shake the series resonance branch that chamber, parallel resonance chamber, E class inverse switch groups and second harmonic inhibit, wherein, the E classes inversion is opened
The input terminal of pass group is connected to DC voltage input end, the output terminal of the E classes inverse switch group respectively with the series resonance
Chamber is connected with the series resonance branch that second harmonic inhibits, and the output terminal of the series resonance chamber connects with the parallel resonance chamber
It connects.
As further improvement of the utility model, the E classes inverse switch group includes inductance LN, capacitance CNAnd switching tube
M, the inductance LNOne end be connected to DC voltage electrode, the inductance LNThe other end successively with the draining of switching tube M, electricity
Hold CNOne end connection, the capacitance CNIt is in parallel with switching tube M.
As further improvement of the utility model, the series resonance chamber includes the inductance L being in seriesSWith capacitance CS, institute
State inductance LNThe other end successively drain electrode with switching tube M, capacitance CNOne end, capacitance CSOne end connection, the capacitance CS's
The other end and the inductance LSOne end connection.
As further improvement of the utility model, the parallel resonance chamber includes the inductance L being in parallelPWith capacitance CP, institute
State inductance LSThe other end successively and the capacitance CPOne end, inductance LPOne end connection
As further improvement of the utility model, the series resonance branch that the second harmonic inhibits includes what is be in series
Inductance LBWith capacitance CB, the inductance L that is in seriesB, capacitance CBWith the capacitance CNIt is in parallel.
The beneficial effects of the utility model are：Through the above scheme, based on E class inverter structures, it is inverse that E classes can be inherited
The advantages of series parallel resonance inverter circuit of change, second harmonic can be eliminated by L-C series resonances branch by having, and reduce output electricity
Second harmonic in pressure keeps rectification side current-symmetrical.
Description of the drawings
Fig. 1 is traditional series parallel resonance inverter circuit figure.
Fig. 2 is traditional series parallel resonance inverter circuit figure based on E class inverter structures.
Fig. 3 is the switch tube voltage current waveform figure of the series parallel resonance inverter circuit based on E class inversions.
Fig. 4 is the harmonic wave composition figure of Fig. 2.
Fig. 5 is a kind of circuit diagram for the series parallel resonance inverter circuit for having second harmonic to inhibit branch of the utility model.
Fig. 6 is a kind of switch tube voltage for the series parallel resonance inverter circuit for having second harmonic to inhibit branch of the utility model
Current waveform.
Fig. 7 is the harmonic wave composition figure of Fig. 5.
Specific embodiment
The utility model is described in further detail for explanation and specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 5, it is a kind of have second harmonic inhibit branch series parallel resonance inverter circuit, including series resonance chamber,
The series resonance branch that parallel resonance chamber, E class inverse switch groups and second harmonic inhibit, wherein, the E classes inverse switch group
Input terminal is connected to DC voltage input end, the output terminal of the E classes inverse switch group respectively with the series resonance chamber and two
The series resonance branch connection that subharmonic inhibits, the output terminal of the series resonance chamber are connected with the parallel resonance chamber.
As shown in figure 5, the E classes inverse switch group includes inductance LN, capacitance CNWith switching tube M, the inductance LNOne end
It is connected to DC voltage electrode, the inductance LNThe other end successively drain electrode with switching tube M, capacitance CNOne end connection, it is described
Capacitance CNIt is in parallel with switching tube M.
As shown in figure 5, the series resonance chamber includes the inductance L being in seriesSWith capacitance CS, the inductance LNThe other end
The successively drain electrode with switching tube M, capacitance CNOne end, capacitance CSOne end connection, the capacitance CSThe other end and the inductance
LSOne end connection.
As shown in figure 5, the parallel resonance chamber includes the inductance L being in parallelPWith capacitance CP, the inductance LSThe other end
Priority and the capacitance CPOne end, inductance LPOne end connection
As shown in figure 5, the series resonance branch that the second harmonic inhibits includes the inductance L being in seriesBWith capacitance CB, phase
The inductance L of series connectionB, capacitance CBWith the capacitance CNIt is in parallel.
A kind of series parallel resonance inverter circuit for having second harmonic to inhibit branch provided by the utility model has following spy
Point：
（1）In order to reduce the content of second harmonic on the basis of " the series parallel resonance inverter circuit of E class inversions ", propose
A kind of " the series parallel resonance inverter circuit for thering is second harmonic to inhibit branch ".Its structure chart is as shown in figure 5, equally include：
Series resonance chamber LSAnd CS, parallel resonance chamber LPAnd CP, E class inverse switch groups（LN, CNAnd M0）；In addition, circuit add it is secondary
The series resonance branch L of harmonics restraintBAnd CB。
（2）Circuit operation is using constant switching frequency and constant duty ratio.In the suitable switching tube of parameters adjusting
M0On driving voltage Vg, drain-source voltage VdsWith drain-source electrode current IdWaveform is illustrated in fig. 6 shown below.As seen from the figure, system can reach
To ZVS and ZDS, switching loss can be greatly decreased, improve efficiency or improve working frequency to reduce volume.Due to second harmonic
Eliminate the presence of branch, VdsVoltage peak（That is switch tube voltage stress）Effectively reduced.
（3）VdsVoltage passes through LS-CS-LP-CPSeries parallel resonance network, DC quantity is filtered out, and voltage fundamental is retained,
Second harmonic is via inductance LBWith capacitance CBBranch, short-circuit, other higher hamonic waves are decayed to a certain extent, it is possible to be generated pure
The higher sinusoidal voltage waveform of degree；Additionally due to series parallel resonance network can keep relatively stable frequency when loading and changing
Characteristic, so output voltage and VdsVoltage will not fluctuate or generate substantially distortion with lightening for load.
（4）It is " the series parallel resonance inverter circuit based on E class inversions " shown in Fig. 4（Fig. 2）Middle VdsTypical waveform（Fig. 3）'s
Harmonic wave forms figure, and secondary harmonic component is higher；And Fig. 7 is " the series parallel resonance inverter circuit for having second harmonic to inhibit branch "
（Fig. 5）Middle VdsTypical waveform（Fig. 6）Harmonic wave form figure, have as seen from the figure second harmonic inhibit branch series parallel resonance inversion
Circuit can substantially completely eliminate second harmonic, and output voltage is made only to contain fundamental voltage and a small amount of third harmonic voltage.
A kind of advantageous effect of series parallel resonance inverter circuit for thering is second harmonic to inhibit branch provided by the utility model
For：In traditional series parallel resonance inverter circuit, since using full bridge structure, switch tube voltage waveform is largely negative
ZVS is unsatisfactory in the range of load, therefore has larger switching loss, and input current is discontinuous, so limiting it in high frequency
Application in circuit.When series parallel resonance inverter circuit based on E class inversions can meet gamut ZVS and nominal load
ZDS improves efficiency, and reaches continuous input current；But it has the problem of second harmonic component is higher, can cause collector ring
Current is asymmetric, larger to transformer capacity demand.And the utility model proposes have second harmonic inhibit branch string simultaneously
Join resonance inversion circuit arrangement based on E class inverter structures, can inherit E class inversions series parallel resonance inverter circuit it is excellent
Point, second harmonic can be eliminated by L-C series resonances branch by having, and reduced the second harmonic in output voltage, kept rectification side
Current-symmetrical.
It is provided by the utility model it is a kind of have second harmonic inhibit branch series parallel resonance inverter circuit, can be used as every
A part for release DC/DC converters, can also be used as the power pack of high-frequency ac system, be also used as coil heats or
The inverter circuit of wireless energy transfer system, have a wide range of applications background.
The above content is combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, several simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (5)
1. a kind of series parallel resonance inverter circuit for thering is second harmonic to inhibit branch, it is characterised in that：Including series resonance chamber, simultaneously
Join resonator, the series resonance branch that E class inverse switch groups and second harmonic inhibit, wherein, the E classes inverse switch group it is defeated
Enter end and be connected to DC voltage input end, the output terminal of the E classes inverse switch group respectively with the series resonance chamber and secondary
The series resonance branch connection of harmonics restraint, the output terminal of the series resonance chamber are connected with the parallel resonance chamber.
2. the series parallel resonance inverter circuit according to claim 1 for thering is second harmonic to inhibit branch, it is characterised in that：Institute
Stating E class inverse switches group includes inductance LN, capacitance CNWith switching tube M, the inductance LNOne end be connected to DC voltage electrode,
The inductance LNThe other end successively drain electrode with switching tube M, capacitance CNOne end connection, the capacitance CNWith switching tube M phases simultaneously
Connection.
3. the series parallel resonance inverter circuit according to claim 2 for thering is second harmonic to inhibit branch, it is characterised in that：Institute
Stating series resonance chamber includes the inductance L being in seriesSWith capacitance CS, the inductance LNThe other end successively with the drain electrode of switching tube M,
Capacitance CNOne end, capacitance CSOne end connection, the capacitance CSThe other end and the inductance LSOne end connection.
4. the series parallel resonance inverter circuit according to claim 3 for thering is second harmonic to inhibit branch, it is characterised in that：Institute
Stating parallel resonance chamber includes the inductance L being in parallelPWith capacitance CP, the inductance LSThe other end successively and the capacitance CPOne
End, inductance LPOne end connection.
5. the series parallel resonance inverter circuit according to claim 2 for thering is second harmonic to inhibit branch, it is characterised in that：Institute
Stating the series resonance branch of second harmonic inhibition includes the inductance L being in seriesBWith capacitance CB, the inductance L that is in seriesB, capacitance CBWith
The capacitance CNIt is in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721052908.2U CN207382210U (en) | 2017-08-22 | 2017-08-22 | A kind of series parallel resonance inverter circuit for thering is second harmonic to inhibit branch |
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| CN201721052908.2U CN207382210U (en) | 2017-08-22 | 2017-08-22 | A kind of series parallel resonance inverter circuit for thering is second harmonic to inhibit branch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395043A (en) * | 2017-08-22 | 2017-11-24 | 哈尔滨工业大学深圳研究生院 | A kind of series parallel resonance inverter circuit for thering is second harmonic to suppress branch road |
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2017
- 2017-08-22 CN CN201721052908.2U patent/CN207382210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395043A (en) * | 2017-08-22 | 2017-11-24 | 哈尔滨工业大学深圳研究生院 | A kind of series parallel resonance inverter circuit for thering is second harmonic to suppress branch road |
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