CN209545443U - A kind of high no-load voltage ratio resonant power converter - Google Patents
A kind of high no-load voltage ratio resonant power converter Download PDFInfo
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- CN209545443U CN209545443U CN201920213006.5U CN201920213006U CN209545443U CN 209545443 U CN209545443 U CN 209545443U CN 201920213006 U CN201920213006 U CN 201920213006U CN 209545443 U CN209545443 U CN 209545443U
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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
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- 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
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Abstract
The utility model relates to field of electronic devices, provide a kind of high no-load voltage ratio resonant power converter, including single switch inverter circuit, isolated form resonance circuit and voltage doubling rectifing circuit.The utility model has the advantages that: passing through the combination of single switch inverter circuit, isolation resonance circuit and voltage doubling rectifing circuit phase；It effectively solves the problems, such as seperating safety, and leakage inductance mode is absorbed by resonance circuit and solves the problems, such as transformer leakage inductance, and the further raising efficiency of Sofe Switch work and electromagnetic compatibility characteristic of continuous input current and switching tube may be implemented in single switch inverter circuit.
Description
Technical field
The utility model relates to electricity field, especially a kind of high no-load voltage ratio resonant power converter.
Background technique
Traditional high no-load voltage ratio power inverter is as shown in Figure 1, include chopper circuit and cockcroft-walton voltage multiplier circuit.Wherein
Chopper circuit includes input inductance Lin, switching tube M and anti-paralleled diode D1, output diode D2 and output capacitance
Cout1 completes DC conversion to be cockcroft-walton voltage multiplier circuit of the alternating current to drive rear class.And cockcroft-walton voltage multiplier is electric
Road includes several rectifier diode D1 ~ D6 and voltage capacitance Cout1 ~ Cout5 and load resistance Rdc again, wherein Cout1,
Cout3, Cout5 constitute output capacitance and meet load resistance Rdc.
In traditional high no-load voltage ratio power inverter, have following some main defects: input voltage and output voltage are
Non-isolated structure, if there is short trouble, output end high voltage can be loaded directly into input supply terminal, cause biggish thing
Therefore.
Utility model content
In order to solve above-mentioned existing technical problem, the utility model provides a kind of high no-load voltage ratio resonant power converter, packet
Include single switch inverter circuit, isolated form resonance circuit, voltage doubling rectifing circuit；Single switch inverter circuit connects isolated form resonance circuit
Input terminal, voltage doubling rectifing circuit connect isolated form resonance circuit output end.
The single switch inverter circuit: for providing input voltage.
The isolated form resonance circuit: it for single switch inverter circuit and voltage doubling rectifing circuit to be isolated, can effectively solve
Certainly safety issue, and leakage inductance mode is absorbed by resonance circuit and solves the problems, such as transformer leakage inductance.
The voltage doubling rectifing circuit: for utilizing rectification and the guide function of diode, voltage is stored to respectively respectively
Capacitor on, then they by polarity be added principle be connected in series, output be higher than input voltage high pressure come.
The single switch inverter circuit includes input inductance Lin, main switch M, anti-paralleled diode and paralleled power switches
Capacitor Cin, the input inductance Lin connect with main switch M, anti-paralleled diode and main switch M reverse parallel connection, switching tube
Shunt capacitance Cin is in parallel with main switch M.
The isolated form resonance circuit includes: primary side series resonant circuit, transformer T and secondary end series resonant circuit,
Primary side series resonant circuit is connect with transformer T input terminal, and secondary end series resonant circuit is connect with transformer T output end.
The primary side series resonant circuit is by primary side series resonant circuit capacitor Cs and primary side series resonant circuit
Inductance Lst is in series.
The pair end series resonant circuit is by secondary end series resonant circuit capacitor Css and secondary end series resonant circuit inductance
Lss is constituted.
The voltage doubling rectifing circuit includes: rectifier diode D1, rectifier diode D2, rectifier diode D3, two poles of rectification
Pipe D4, rectifier diode D5, rectifier diode D6, times voltage capacitance Cout1, times voltage capacitance Cout2, times voltage capacitance Cout3, multiplication of voltage
Capacitor Cout4, times voltage capacitance Cout5 and load resistance Rdc.
The anode of the rectifier diode D1 cathode connection rectifier diode D2, the cathode of rectifier diode D2 connect rectification
The anode of diode D3, the anode of the cathode connection rectifier diode D4 of rectifier diode D3, the cathode of rectifier diode D4 connect
Connect the anode of rectifier diode D5, the anode of the cathode connection rectifier diode D6 of rectifier diode D5.
The rectifier diode D1 is in parallel with times voltage capacitance Cout1 after connecting with rectifier diode D2, rectifier diode D2
It is in parallel with times voltage capacitance Cout2 after connecting with rectifier diode D3, after rectifier diode D3 connects with rectifier diode D4 and again
Voltage capacitance Cout3 is in parallel, and rectifier diode D4 is in parallel with times voltage capacitance Cout5 after connecting with rectifier diode D5, rectifies two poles
Pipe D5 is in parallel with times voltage capacitance Cout6 after connecting with rectifier diode D6.
After described times of voltage capacitance Cout1, times voltage capacitance Cout3 and again voltage capacitance Cout5 series connection simultaneously with load resistance Rdc
Connection.
The isolated form resonance circuit includes primary side series resonant circuit, transformer T and secondary end series resonant circuit.
The primary side series resonant circuit is by primary side series resonant circuit capacitor Cs and primary side series resonant circuit
Inductance Lst is in series.
The transformer T includes source self-induction coil Lpri and pair end self-induction coil Lsec.
The pair end series resonant circuit is by secondary end series resonant circuit capacitor Css and secondary end series resonant circuit inductance
Lss is constituted.
The source self-induction coil Lpri of the transformer T connect with the primary side series resonant circuit after circuit with
The paralleled power switches capacitor Cin of the single switch inverter circuit is in parallel.
The secondary end self-induction coil Lsec of the transformer T connect with the secondary end series resonant circuit after circuit and institute
It is in parallel to state rectifier diode D1.
The isolated form resonance circuit includes primary side series resonant circuit, transformer T and secondary end series resonant circuit.
The primary side series resonant circuit is made of primary side series resonant circuit capacitor Cs.
The transformer T includes source self-induction coil Lpri and pair end self-induction coil Lsec.
The pair end series resonant circuit is by secondary end series resonant circuit capacitor Css and secondary end series resonant circuit inductance
Lss is constituted.
The source self-induction coil Lpri of the transformer T connect with the primary side series resonant circuit after circuit with
The paralleled power switches capacitor Cin of the single switch inverter circuit is in parallel.
The secondary end self-induction coil Lsec of the transformer T connect with the secondary end series resonant circuit after circuit and institute
It is in parallel to state rectifier diode D1.
The isolated form resonance circuit includes primary side series resonant circuit, transformer T and secondary end series resonant circuit.
The primary side series resonant circuit is by primary side series resonant circuit capacitor Cs and primary side series resonant circuit
Inductance Lst is in series.
The transformer T includes source self-induction coil Lpri and pair end self-induction coil Lsec.
The pair end series resonant circuit is made of secondary end series resonant circuit capacitor Css.
The source self-induction coil Lpri of the transformer T connect with the primary side series resonant circuit after circuit with
The paralleled power switches capacitor Cin of the single switch inverter circuit is in parallel.
The secondary end self-induction coil Lsec of the transformer T connect with the secondary end series resonant circuit after circuit and institute
It is in parallel to state rectifier diode D1.
The circuit is added second harmonic and eliminates branch, and the second harmonic eliminates branch routing second harmonic and eliminates branch electricity
Feel LB and second harmonic elimination branch capacitor CB is in series, the second harmonic eliminates branch and the paralleled power switches capacitor
Cin is in parallel.
Compared to the prior art, the beneficial effects of the utility model are: passing through single switch inverter circuit, isolation resonance circuit
And the combination of voltage doubling rectifing circuit phase；It effectively solves the problems, such as seperating safety, and leakage inductance mode is absorbed by resonance circuit
Solve the problems, such as transformer leakage inductance, and the Sofe Switch work of continuous input current and switching tube may be implemented in single switch inverter circuit
Further raising efficiency and electromagnetic compatibility characteristic.
Detailed description of the invention
Fig. 1 is traditional high no-load voltage ratio power converter circuit figure.
Fig. 2 is traditional high no-load voltage ratio power inverter switch spike voltage and current waveform.
Fig. 3 is the single switch pipe resonance inversion voltage doubling rectifing circuit figure of the utility model.
Fig. 4 is the switch tube voltage current waveform figure of the utility model single switch pipe resonance inversion voltage doubling rectifing circuit.
Fig. 5 is another single switch pipe resonance inversion voltage doubling rectifing circuit figure.
Fig. 6 is the switch tube voltage current waveform figure of another single switch pipe resonance inversion voltage doubling rectifing circuit.
Specific embodiment
The present invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.
As shown in figure 3, being the single switch pipe resonance inversion voltage doubling rectifing circuit figure of the utility model.
Main technical schemes proposed in Fig. 3, including three chief components: single switch inverter circuit, every
Release resonance circuit, voltage doubling rectifing circuit.Wherein single switch inverter circuit includes input inductance Lin, and main switch M(contains instead simultaneously
Union II pole pipe), paralleled power switches capacitor Cin.Isolated form resonance circuit includes primary side series resonant circuit Cs and Lst, source
Hold self-induction Lpri and pair end self-induction Lsec composition transformer T(include coefficient of coup k), secondary end series resonant circuit Css with
And Lss.Voltage doubling rectifing circuit includes several rectifier diode D1 ~ D6 and voltage capacitance Cout1 ~ Cout5 and load resistance again
Rdc, wherein Cout1, Cout3, Cout5 constitute output capacitance and meet load resistance Rdc.
For voltage doubling rectifing circuit in Fig. 3 by taking three ranks as an example, being not limited to three ranks in actual use can be other orders with suitable
The demand that should be applied.
Isolated form resonance circuit in Fig. 3 is not limited to form on figure, can also be into according to the coefficient of coup and the demand of application
Row simplifies, such as without Lst or without the structure of Lss.
The voltage current waveform of main switch is E class operating mode in Fig. 3.
As shown in figure 4, being the switch tube voltage current wave of the utility model single switch pipe resonance inversion voltage doubling rectifing circuit
Shape figure.
Since the voltage current waveform of main switch in Fig. 3 is E class operating mode, so it is in Sofe Switch state, effect
Rate is very high to be also suitable for high-frequency operation.
If Fig. 5 is, another single switch pipe resonance inversion voltage doubling rectifing circuit figure.
In Fig. 5, single switch resonance inversion voltage doubling rectifing circuit joined second harmonic and eliminate branch, can effectively reduce
Switching tube stress and the symmetry for improving system waveform.The voltage current waveform of its main switch is E/F2 mode.
As shown in fig. 6, being the switch tube voltage current waveform figure of another single switch pipe resonance inversion voltage doubling rectifing circuit.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (10)
1. a kind of high no-load voltage ratio resonant power converter, it is characterised in that: including single switch inverter circuit, isolated form resonance circuit,
Voltage doubling rectifing circuit；Single switch inverter circuit connects the input terminal of isolated form resonance circuit, and voltage doubling rectifing circuit connects isolated form
The output end of resonance circuit；
The single switch inverter circuit: for providing input voltage；
The isolated form resonance circuit: for single switch inverter circuit and voltage doubling rectifing circuit to be isolated, it can effectively solve the problem that peace
Full property problem, and leakage inductance mode is absorbed by resonance circuit and solves the problems, such as transformer leakage inductance；
The voltage doubling rectifing circuit: for utilizing rectification and the guide function of diode, voltage is stored to respective electricity respectively
Then Rong Shang is connected in series them by the principle that polarity is added, the high pressure that output is higher than input voltage is come.
2. a kind of high no-load voltage ratio resonant power converter according to claim 1, it is characterised in that: the single switch inversion electricity
Road include input inductance Lin, main switch M, anti-paralleled diode and paralleled power switches capacitor Cin, the input inductance Lin and
Main switch M series connection, anti-paralleled diode and main switch M reverse parallel connection, paralleled power switches capacitor Cin and main switch M are simultaneously
Connection.
3. a kind of high no-load voltage ratio resonant power converter according to claim 1, it is characterised in that: described
Isolated form resonance circuit includes: primary side series resonant circuit, transformer T and secondary end series resonant circuit, primary side string
Connection resonance circuit is connect with transformer T input terminal, and secondary end series resonant circuit is connect with transformer T output end.
4. a kind of high no-load voltage ratio resonant power converter according to claim 3, it is characterised in that: the primary side series connection is humorous
The circuit that shakes is in series by primary side series resonant circuit capacitor Cs and primary side series resonant circuit inductance Lst.
5. a kind of high no-load voltage ratio resonant power converter according to claim 3, it is characterised in that: pair end series resonance
Circuit is made of secondary end series resonant circuit capacitor Css and pair end series resonant circuit inductance Lss.
6. a kind of high no-load voltage ratio resonant power converter according to claim 1, it is characterised in that: the voltage doubling rectifing circuit
It include: rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, rectifier diode D5, rectification two
Pole pipe D6, times voltage capacitance Cout1, times voltage capacitance Cout2, times voltage capacitance Cout3, times voltage capacitance Cout4, times voltage capacitance Cout5
With load resistance Rdc；
The anode of the rectifier diode D1 cathode connection rectifier diode D2, two poles of cathode connection rectification of rectifier diode D2
The anode of pipe D3, the anode of the cathode connection rectifier diode D4 of rectifier diode D3, the cathode connection of rectifier diode D4 are whole
Flow the anode of diode D5, the anode of the cathode connection rectifier diode D6 of rectifier diode D5；
The rectifier diode D1 is in parallel with times voltage capacitance Cout1 after connecting with rectifier diode D2, rectifier diode D2 with it is whole
Flow diode D3 series connection after it is in parallel with times voltage capacitance Cout2, rectifier diode D3 connect with rectifier diode D4 after and times piezoelectricity
It is in parallel to hold Cout3, rectifier diode D4 is in parallel with times voltage capacitance Cout5 after connecting with rectifier diode D5, rectifier diode D5
It is in parallel with times voltage capacitance Cout6 after connecting with rectifier diode D6；
It is in parallel with load resistance Rdc after times voltage capacitance Cout1, times voltage capacitance Cout3 and again voltage capacitance Cout5 series connection.
7. a kind of high no-load voltage ratio resonant power converter according to claim 6, it is characterised in that: the isolated form resonance electricity
Road includes primary side series resonant circuit, transformer T and secondary end series resonant circuit；
The primary side series resonant circuit is by primary side series resonant circuit capacitor Cs and primary side series resonant circuit inductance
Lst is in series；
The transformer T includes source self-induction coil Lpri and pair end self-induction coil Lsec；
The pair end series resonant circuit is by secondary end series resonant circuit capacitor Css and secondary end series resonant circuit inductance Lss structure
At；
The source self-induction coil Lpri of the transformer T connect with the primary side series resonant circuit after circuit with it is described
The paralleled power switches capacitor Cin of single switch inverter circuit is in parallel；
The secondary end self-induction coil Lsec of the transformer T connect with the secondary end series resonant circuit after circuit with it is described whole
It is in parallel to flow diode D1.
8. a kind of high no-load voltage ratio resonant power converter according to claim 6, it is characterised in that: the isolated form resonance electricity
Road includes primary side series resonant circuit, transformer T and secondary end series resonant circuit；
The primary side series resonant circuit is made of primary side series resonant circuit capacitor Cs；
The transformer T includes source self-induction coil Lpri and pair end self-induction coil Lsec；
The pair end series resonant circuit is by secondary end series resonant circuit capacitor Css and secondary end series resonant circuit inductance Lss structure
At；
The source self-induction coil Lpri of the transformer T connect with the primary side series resonant circuit after circuit with it is described
The paralleled power switches capacitor Cin of single switch inverter circuit is in parallel；
The secondary end self-induction coil Lsec of the transformer T connect with the secondary end series resonant circuit after circuit with it is described whole
It is in parallel to flow diode D1.
9. a kind of high no-load voltage ratio resonant power converter according to claim 6, it is characterised in that: the isolated form resonance electricity
Road includes primary side series resonant circuit, transformer T and secondary end series resonant circuit；
The primary side series resonant circuit is by primary side series resonant circuit capacitor Cs and primary side series resonant circuit inductance
Lst is in series；
The transformer T includes source self-induction coil Lpri and pair end self-induction coil Lsec；
The pair end series resonant circuit is made of secondary end series resonant circuit capacitor Css；
The source self-induction coil Lpri of the transformer T connect with the primary side series resonant circuit after circuit with it is described
The paralleled power switches capacitor Cin of single switch inverter circuit is in parallel；
The secondary end self-induction coil Lsec of the transformer T connect with the secondary end series resonant circuit after circuit with it is described whole
It is in parallel to flow diode D1.
10. a kind of high no-load voltage ratio resonant power converter described in -9 any one according to claim 1, it is characterised in that: be added
Second harmonic eliminates branch, and the second harmonic eliminates branch routing second harmonic and eliminates shunt inductance LB and second harmonic elimination branch
Road capacitor CB is in series, and it is in parallel with the paralleled power switches capacitor Cin that the second harmonic eliminates branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920213006.5U CN209545443U (en) | 2019-02-19 | 2019-02-19 | A kind of high no-load voltage ratio resonant power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920213006.5U CN209545443U (en) | 2019-02-19 | 2019-02-19 | A kind of high no-load voltage ratio resonant power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209545443U true CN209545443U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920213006.5U Active CN209545443U (en) | 2019-02-19 | 2019-02-19 | A kind of high no-load voltage ratio resonant power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209545443U (en) |
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2019
- 2019-02-19 CN CN201920213006.5U patent/CN209545443U/en active Active
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