CN101404463B - Soft switch resonance type DC-AC inverter circuit - Google Patents
Soft switch resonance type DC-AC inverter circuit Download PDFInfo
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- CN101404463B CN101404463B CN2008100797348A CN200810079734A CN101404463B CN 101404463 B CN101404463 B CN 101404463B CN 2008100797348 A CN2008100797348 A CN 2008100797348A CN 200810079734 A CN200810079734 A CN 200810079734A CN 101404463 B CN101404463 B CN 101404463B
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- electronic switching
- switching tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
Then invention pertains to a resonant soft switching DC-AC inverter circuit, comprising an inverter bridge consisting of four electronic switching tubes, a resonance circuit which is formed by connecting the midpoints of series branches formed by the series connection of an inductor and two equivalent capacitors as well as series branches formed by the series connection of two electronic switching tubes; each electronic switching tube is connected in series with a diode and a margin resonance capacitor. When in work and no matter being in the forward energy transfer process or backward energy transfer process, the electronic switching tubes that conduct high frequency power conversion work in a soft switching way, thus reducing the working loss of the circuit greatly, enhancing the transfer efficiency of the circuit and the working reliability of the switching tubes, effectively eliminating the strong electromagnetic interference caused by hard switching, minimizing the volume, reducing the weight and lowering the cost; furthermore, as the resonance circuit always remains in the resonance state in work, the power conversion capability of the circuit is improved greatly, thus providing higher efficiency, lower interference and higher reliability.
Description
Technical field
The present invention relates to a kind of DC-AC inverter circuit, particularly a kind of soft switch resonance type DC-AC inverter circuit with bidirectional energy transmittability with bidirectional energy transmittability.
Background technology
In inversion transformation technique, has using value most with high-performance inverter circuit with bidirectional energy transmittability.In the prior art, far-reaching to market clout, the DC-AC inverter circuit with bidirectional energy transmittability that is most widely used has as shown in Figure 1, and it comprises:
One by four electronic switching tube (T
3', T
4', T
5', T
6') inverter bridge formed, every electronic switching tube all has a diode to be in parallel with it;
The series arm that one by an inductance L ' and a capacitor C ' is composed in series;
One by two electronic switching tube (T
1', T
2') series arm that is composed in series, every electronic switching tube all has a diode to be in parallel with it;
By four electronic switching tube (T
3', T
4', T
5', T
6The inductance end of the series arm that ') inverter bridge formed with by an inductance L ' and a capacitor C capacitor C of series arm ' form ' are in parallel, by an inductance L ' and a capacitor C ' forms and by two electronic switching tube (T
1', T
2') mid point of the series arm formed links to each other, capacitance terminal and by two electronic switching tube (T
1', T
2') the following pipe end of the series arm formed links to each other, with four electronic switching tube (T
3', T
4', T
5', T
6') output of the inverter bridge formed makes output; With two electronic switching tube (T
1', T
2') the upper and lower pipe end of the series arm formed makes DC power supply V respectively
InPositive pole (+), negative pole (-) input.
Among the figure, D
1', D
2', D
3', D
4', D
5', D
6' be respectively and electronic switching tube T
1', T
2', T
3', T
4', T
5', T
6' diode connected in parallel, Z
L' be load.
During forward transmitted energy (promptly by input to output), electronic switching tube T
2' close T
1' under the low-frequency sine modulation, work in the PWM mode: T
1' during conducting, DC power supply V
InPass through T
1', L ' is C ' charging, and at T
1' close and have no progeny, the electric current among the L ' is gone up at L ' and is formed flyback voltage, makes D
2' conducting, form continuous current circuit L ' → C ' → D
2' → L ' continues as C ' power supply by the energy storage on the L '; Simultaneously, in the positive half cycle of output voltage, electronic switching tube T
3', T
4' close T
5', T
6' conducting, in the negative half period of output voltage, electronic switching tube T
5', T
6' close T
3', T
4' conducting, pass through capacitor C ' wheel T that flows through
5', T
6' or T
3', T
4' to load Z
L' power supply, load Z
L' promptly obtain the voltage of sinusoidal alternating, promptly alternating current has just been finished the inversion work of DC-AC.
When load band perception or capacitive, in output voltage changes the forward and backward opposite phase width of polarity (being voltage over zero), make T
1', T
3', T
4', T
5', T
6' being in off state, the load quadergy will be passed through D
3', D
4', D
5', D
6' be stored in C ' after the full bridge rectifier rectification formed, when the time comes, electronic switching tube T
2' under the low-frequency sine modulation, work in the PWM mode: T
2' during conducting, form by C ' → L ' → T in the circuit
2The current circuit that ' → C ' is such for L ' energy storage, is worked as T
2' close and have no progeny, the electric current among the L ' is gone up at L ' and is formed flyback voltage, makes D
1' conducting, form by L ' → D
1' → DC power supply V
InThe continuous current circuit that → C ' → L ' is such, the electric energy that will be stored on the L ' is delivered to DC power supply V
InThereby,, finish from the quadergy of outlet side feeding back to the direct current source with the form of Boost circuit.
Obviously, no matter such inverter circuit is to be operated under the Buck pattern of forward delivery of energy, when still being operated in the Boost pattern of reverse resilience, its electronic switching tube of bearing HF power conversion is all with the work of hard switching mode, because the hard switching working loss is big, conversion efficiency is low, circuit elements device current, voltage stress are very high, cause circuit reliability low, the big electromagnetic interference that forms of hard switching especially has a strong impact on self control and the work safety of electronic equipment all round.
Summary of the invention
Technical problem to be solved by this invention is to overcome electronic switching tube that above-mentioned existing DC-AC inverter circuit with bidirectional energy transmittability bears HF power conversion all with the deficiency of hard switching mode work, and provides a kind of electronic switching tube of bearing HF power conversion all with the soft switch resonance type DC-AC inverter circuit with bidirectional energy transmittability of soft on-off mode work.
The present invention solves the technical scheme that its technical problem takes: a kind of electronic switching tube of bearing HF power conversion is all with the soft switch resonance type DC-AC inverter circuit with bidirectional energy transmittability of soft on-off mode work, and it comprises:
One by four electronic switching tube (T
3, T
4, T
5, T
6) inverter bridge formed, every electronic switching tube all has a diode and an edge resonant capacitance to be in parallel with it;
One by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit that is connected to form of the series arm mid point that is composed in series;
One by two electronic switching tube (T
1, T
2) series arm that is composed in series, every electronic switching tube all has a diode and an edge resonant capacitance to be in parallel with it;
By four electronic switching tube (T
3, T
4, T
5, T
6) inverter bridge formed with by two electronic switching tube (T
1, T
2) series arm formed is in parallel, by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit formed the inductance end with by two electronic switching tube (T
1, T
2) mid point of the series arm formed links to each other, two capacitance terminal respectively with by four electronic switching tube (T
3, T
4, T
5, T
6) two outputs of the inverter bridge formed link to each other, with four electronic switching tube (T
3, T
4, T
5, T
6) output of the inverter bridge formed makes output; With two electronic switching tube (T
1, T
2) the upper and lower pipe end of the series arm formed makes DC power supply V respectively
InPositive pole (+), negative pole (-) input.
Referring to accompanying drawing 2:
Among the figure, D
1, D
2, D
3, D
4, D
5, D
6Be respectively and electronic switching tube T
1, T
2, T
3, T
4, T
5, T
6Diode connected in parallel can be independently; Also can be respectively electronic switching tube T
1, T
2, T
3, T
4, T
5, T
6Parasitic.C
1, C
2, C
3, C
4, C
5, C
6Be respectively and electronic switching tube T
1, T
2, T
3, T
4, T
5, T
6Edge resonant capacitance in parallel.
When forward output energy (promptly by input to output), in the positive half cycle of output voltage, electronic switching tube T
3, T
4Turn-off, by T
5, T
6And T
1, T
2With by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit formed finishes inversion work: at the positive half cycle of high-frequency modulation signal, T
5, T
2Conducting, DC power supply V
InPass through T
5, C
R1, L
r, T
2Form path, be C
R1Positive charge, after after a while, T
2At C
2Protection realize that down no-voltage turn-offs T
2Have no progeny in the pass, L
rIn electric current at L
rLast formation flyback voltage makes D
1Conducting forms continuous current circuit L
r→ D
1→ T
5→ C
R1→ L
r, by L
rOn energy storage continue as C
R1Charging, this seasonal T
1Open-minded under no-voltage, before afterflow is near zero point, make T
5At C
5T is turn-offed in protection no-voltage down
5Have no progeny moment in the pass, L
rIn the formed flyback voltage of aftercurrent through C
R2Make D
6Conducting forms residual flow loop L
r→ T
1→ DC power supply V
In→ D
6→ C
R2→ L
r, this seasonal T
6Open-minded under no-voltage, when this burst aftercurrent made zero, the positive half cycle of high-frequency modulation signal finished; Subsequently, DC power supply V
InWill pass through T
1→ L
r→ C
R2→ T
6Form new path, give C
R2Positive charge has just entered the work of high-frequency modulation signal negative half period, after after a while, and T
1At C
1Protection realize that down no-voltage turn-offs T
1Have no progeny in the pass, L
rIn electric current at L
rLast formation flyback voltage makes D
2Conducting forms continuous current circuit L
r→ C
R2→ T
6→ D
2→ L
r, by L
rOn energy storage continue as C
R2Charging, this seasonal T
2Open-minded under no-voltage, before afterflow is near zero point, make T
6At C
6T is turn-offed in protection no-voltage down
6Have no progeny moment in the pass, L
rIn the formed flyback voltage of aftercurrent through C
R1Make D
5Conducting forms residual flow loop L
r→ C
R1→ D
5→ DC power supply V
In→ T
2→ L
r, this seasonal T
5Open-minded under no-voltage, when this burst aftercurrent made zero, the high-frequency modulation signal negative half period finished; Subsequently, circuit has just begun the work of the positive half cycle of high-frequency modulation signal again, then to C
R1Positive charge ..., go round and begin again, carrying out the high frequency conversion work of the positive half cycle of output voltage, C
R1And C
R2Export to load Z after the forward high frequency voltage addition that charges into of last quilt
L
In the positive-negative half-cycle of above-mentioned high-frequency modulation signal, because DC power supply V
InThe length of power-on time is modulated by the low frequency reference signal, so circuit is exported to load Z
LVoltage waveform identical with reference signal.
And, then be electronic switching tube T at the negative half period of output voltage
5, T
6Turn-off, then by T
3, T
4And T
1, T
2With by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit formed works together, change with the identical working method of the positive half cycle of above-mentioned output voltage, thereby at load Z
LThe opposite polarity output voltage of last acquisition.
As load Z
LDuring for perception or capacitive load, load Z
LOn quadergy can be stored in C
R1And C
R2On, circuit can be transformed into the direct current source with it with the working method of soft switch, when the time comes, turn-offs T
3, T
4, T
5, T
6, this moment circuit operation principle such as accompanying drawing 3:
As load Z
LOn quadergy voltage be left side when positive right negative, D
3, D
4Naturally end, at the positive half cycle of high-frequency modulation signal, T
2Turn-off T
1Open-minded, C
R1Pass through D
5, T
1, L
rDischarge, T
1The ON time width modulated by the instantaneous error of load voltage and reference voltage, after reaching required time width, T
1At C
1Protection under no-voltage turn-off, when the time comes, L
rIn electric current at L
rLast formation flyback voltage makes D
2Conducting forms continuous current circuit L
r→ C
R1→ D
5→ DC power supply V
In→ D
2→ L
r, will be stored in L
rOn electric energy deliver to DC power supply V
In, realize C with this
R1In energy to DC power supply V
InMiddle transfer, this seasonal T
2Open-minded under no-voltage, after afterflow finishes naturally, C
R2Promptly pass through L
r, T
2, D
6The discharge of beginning high-frequency modulation signal negative half period, same T
2The ON time width modulated by the instantaneous error of load voltage and reference voltage, after reaching required time width, T
2At C
2Protection under no-voltage turn-off, when the time comes, L
rIn electric current at L
rLast formation flyback voltage makes D
1Conducting forms continuous current circuit L
r→ D
1→ DC power supply V
In→ D
6→ C
R2→ L
r, will be stored in L
rOn electric energy deliver to DC power supply V
In, realize C with this
R2In energy to DC power supply V
InMiddle transfer, this seasonal T
1Open-minded under no-voltage, after afterflow finishes naturally, just begun the work of the positive half cycle of high-frequency modulation signal again ..., go round and begin again, realize that the load quadergy is to DC power supply V
InThe feedback of side.
As load Z
LOn quadergy voltage be the negative right timing in a left side, D
5, D
6Naturally end, then by D
3, D
4And T
1, T
2With by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit formed works together, with above-mentioned load Z
LOn quadergy voltage for a left side when positive right negative identical working method change, thereby finish the load quadergy to DC power supply V
InThe feedback of side.
This soft switch resonance type DC-AC inverter circuit provided by the present invention with bidirectional energy transmittability, during work, no matter be in the process of forward transmitted energy, still when oppositely feeding back energy, the electronic switching tube of bearing HF power conversion is all with soft on-off mode work, compared with prior art: the defective that has not only overcome existing PWM hard switching technology, can reduce the working loss of circuit significantly, improve the conversion efficiency of circuit and the functional reliability of switching tube, effectively eliminate the powerful electromagnetic interference that hard switching brings, reduced volume, reduce weight, reduce production costs; And because resonant circuit is in resonance condition all the time in the work, can promote the power conversion capability of circuit significantly, bring more high efficiency, lower interference and higher reliability.
Description of drawings
Fig. 1 is existing electrical schematic diagram with DC-AC inverter circuit of bidirectional energy transmittability.
Fig. 2 is the electrical schematic diagram of the soft switch resonance type DC-AC inverter circuit with bidirectional energy transmittability that the embodiment of the invention provided.
Fig. 3 is the soft switch resonance type DC-AC inverter circuit with bidirectional energy transmittability that the embodiment of the invention the provided electrical schematic diagram when oppositely feeding back energy.
Embodiment
With reference to accompanying drawing 2, this electronic switching tube of bearing HF power conversion that the embodiment of the invention provided is all with the soft switch resonance type DC-AC inverter circuit with bidirectional energy transmittability of soft on-off mode work, and it comprises:
One by four field effect electronic switching tube (T
3, T
4, T
5, T
6) inverter bridge formed, every field effect electronic switching tube all has a parasitic diode and an edge resonant capacitance to be in parallel with it;
One by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit that is connected to form of the series arm mid point that is composed in series;
One by two field effect electronic switching tube (T
1, T
2) series arm that is composed in series, every field effect electronic switching tube all has a parasitic diode and an edge resonant capacitance to be in parallel with it;
By four field effect electronic switching tube (T
3, T
4, T
5, T
6) inverter bridge formed with by two field effect electronic switching tube (T
1, T
2) series arm formed is in parallel, by an inductance L
rWith two equivalent capacitance (C
R1, C
R2) resonant circuit formed the inductance end with by two field effect electronic switching tube (T
1, T
2) mid point of the series arm formed links to each other, two capacitance terminal respectively with by four field effect electronic switching tube (T
3, T
4, T
5, T
6) two outputs of the inverter bridge formed link to each other, with four field effect electronic switching tube (T
3, T
4, T
5, T
6) output of the inverter bridge formed makes output; With two field effect electronic switching tube (T
1, T
2) the upper and lower pipe end of the series arm formed makes DC power supply V respectively
InPositive pole (+), negative pole (-) input.
Among the figure, D
1, D
2, D
3, D
4, D
5, D
6Be respectively and field effect electronic switching tube T
1, T
2, T
3, T
4, T
5, T
6Diode connected in parallel is respectively field effect electronic switching tube T
1, T
2, T
3, T
4, T
5, T
6Parasitic; C
1, C
2, C
3, C
4, C
5, C
6Be respectively and field effect electronic switching tube T
1, T
2, T
3, T
4, T
5, T
6Edge resonant capacitance in parallel; C is an output filter capacitor, Z
LIt is load.
Claims (3)
1. soft switch resonance type DC-AC inverter circuit is characterized in that it comprises:
One by four electronic switching tube (T
3, T
4, T
5, T
6) inverter bridge formed, every electronic switching tube all has a diode and an edge resonant capacitance to be in parallel with it;
One by an inductance (L
r) and two equivalent capacitance (C
R1, C
R2) resonant circuit that is connected to form of the series arm mid point that is composed in series;
One by two electronic switching tube (T
1, T
2) series arm that is composed in series, every electronic switching tube all has a diode and an edge resonant capacitance to be in parallel with it;
By four electronic switching tube (T
3, T
4, T
5, T
6) inverter bridge formed with by two electronic switching tube (T
1, T
2) series arm formed is in parallel, by an inductance (L
r) and two equivalent capacitance (C
R1, C
R2) resonant circuit formed the inductance end with by two electronic switching tube (T
1, T
2) mid point of the series arm formed links to each other, two capacitance terminal respectively with by four electronic switching tube (T
3, T
4, T
5, T
6) two outputs of the inverter bridge formed link to each other, with four electronic switching tube (T
3, T
4, T
5, T
6) output of the inverter bridge formed makes output; With two electronic switching tube (T
1, T
2) the upper and lower pipe end of the series arm formed makes DC power supply (V respectively
In) positive pole (+), negative pole (-) input.
2. soft switch resonance type DC-AC inverter circuit according to claim 1 is characterized in that: with electronic switching tube (T
1, T
2, T
3, T
4, T
5, T
6) diode that is in parallel can be independently; Also can be respectively electronic switching tube (T
1, T
2, T
3, T
4, T
5, T
6) parasitic.
3. soft switch resonance type DC-AC inverter circuit according to claim 1 is characterized in that: electronic switching tube (T
1, T
2, T
3, T
4, T
5, T
6) what adopt is field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100797348A CN101404463B (en) | 2008-11-07 | 2008-11-07 | Soft switch resonance type DC-AC inverter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100797348A CN101404463B (en) | 2008-11-07 | 2008-11-07 | Soft switch resonance type DC-AC inverter circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101404463A CN101404463A (en) | 2009-04-08 |
| CN101404463B true CN101404463B (en) | 2011-04-13 |
Family
ID=40538360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100797348A Active CN101404463B (en) | 2008-11-07 | 2008-11-07 | Soft switch resonance type DC-AC inverter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101404463B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368361B (en) * | 2013-07-31 | 2016-01-20 | 石家庄通合电子科技股份有限公司 | A kind of integrated electronic soft switch circuit |
-
2008
- 2008-11-07 CN CN2008100797348A patent/CN101404463B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101404463A (en) | 2009-04-08 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHIJIAZHUANG TONHE ELECTRONICS TECHNOLOGIES CO., L Free format text: FORMER NAME: TONGHE ELECTRONIC CO., LTD, SHIJIAZHUANG |
|
| CP03 | Change of name, title or address |
Address after: 050000, building 12, Tianshan Science Park, 319 Xiangjiang Road, Shijiazhuang hi tech Development Zone, Hebei Patentee after: Shijiazhuang Tonhe Electronics Technologies Co., Ltd. Address before: 050000 No. 53 East Yuhua Road, Hebei, Shijiazhuang Patentee before: Tonghe Electronic Co., Ltd, Shijiazhuang |