CN206442297U - Boost resonant type soft-switch converters - Google Patents
Boost resonant type soft-switch converters Download PDFInfo
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- CN206442297U CN206442297U CN201621170368.3U CN201621170368U CN206442297U CN 206442297 U CN206442297 U CN 206442297U CN 201621170368 U CN201621170368 U CN 201621170368U CN 206442297 U CN206442297 U CN 206442297U
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- switching tube
- resonant
- inductance
- voltage
- power supply
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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
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Abstract
The utility model discloses a kind of Boost resonant type soft-switches converter, including：Including：Power supply, energy storage boost inductance (Lf), switching tube (VT), the parasitic diode (VD1) of switching tube (VT), resonant capacitance (Cr), resonant inductance (Lr), filter capacitor (Cf), switching and rectifying diode (VD2) and for load (Rr), wherein, power supply positive output end passes through energy storage boost inductance (Lf), switching tube (VT) connects power supply negative terminal, the parasitic diode (VD1) of switching tube (VT) is in parallel with switching tube (VT), the positive output end of power supply also passes through resonant inductance (Lr), switching and rectifying diode (VD2) connects power supply negative terminal, resonant capacitance (Cr), filter capacitor (Cf) is in parallel with switching tube (VT) respectively, load (Rr) is connected in parallel on filter capacitor (Cf) two ends.The utility model is conducive to complete machine stability, further reduces fault rate.
Description
Technical field
The utility model is related to a kind of Boost resonant type soft-switches converter, and it is applied to automobile charging pile module, power train
Unite charging module, communication system charging module, the field of power supplies such as solar energy DC/DC modules.
Background technology
In the field such as industry automatic control and power supply, Switching Power Supply has efficiency high, lightweight, the advantage such as small volume.And
It is widely applied.
Stabilization, the reliability of Switching Power Supply are even more important.Require that fault rate is extremely low simultaneously, efficiency high.Especially in big work(
In the Switching Power Supply of rate efficiency be an important technical indicator it indicate energy-conserving and environment-protective.In communication, filling in power system
Electric module etc., particularly in electric automobile charging pile, during solar energy is built, used power module can all be applied to Boost
Circuit.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of high-gain, low cost, controls simple Boost resonance softs to open
Close converter.
The utility model Boost resonant type soft-switch converters, including：Power supply, energy storage boost inductance (Lf), switching tube
(VT), the parasitic diode (VD1) of switching tube (VT), resonant capacitance (Cr), resonant inductance (Lr), filter capacitor (Cf), switch
Commutation diode (VD2) and for load (Rr), wherein, power supply positive output end passes through energy storage boost inductance (Lf), switching tube
(VT) power supply negative terminal is connected, the parasitic diode (VD1) of switching tube (VT) is in parallel with switching tube (VT), and the positive output end of power supply is also
Power supply negative terminal, resonant capacitance (Cr), filter capacitor (Cf) point are connected by resonant inductance (Lr), switching and rectifying diode (VD2)
Not in parallel with switching tube (VT), load (Rr) is connected in parallel on filter capacitor (Cf) two ends；
State 1, the resonant capacitance Cr charging stages (t0-t1),
Before to, switching tube VT conductings, input current Ii (is turned on) through VT afterflows, makes the terminal voltages of resonant capacitance Cr bis-
State is off for 0V, VD1, now the voltage Vcr of resonant capacitance<Vo, switching tube parasitic diode VD1 are humorous in reverse-biased
The inductance Lr electric currents that shake are 0A, in moment switching tubes VT shut-offs, and input current Ii charges to resonant capacitance Cr, and capacitance voltage is from 0V
Start linear rise.Now switching tube VT C points are that 0V, i.e. VT are zero voltage turn-offs；
State 2, resonant stage (t1-t3),
When resonant capacitance Cr voltage is charged to Vo, Cr and Lr start electric current ILr on resonance, inductance Lr since 0
Rise.When beginning to ramp up from t1 to t2, Ilr=I0, now Vcr voltages are to maximum Vcr (max), the Ilr since t2>I0
Now, Cr start electric discharge Vcr voltages begin to decline.Drop to 0V to Vcr voltages during t3, diode VD1 starts to lead
It is logical, make VT voltage clamping to 0V, now VT conductings, i.e. VT no-voltages are turned on.
State 3, resonant inductance Lr discharge regimes (t3-t4),
Now VT is turned on, and input current Ii is negative to input voltage by VT, and it is 0V to make C points voltage, and inductance Lf starts energy storage.
Voltage=the Vo at the ends of resonant inductance Lr bis-, resonant inductance Lr start electric discharge, electric current Ilr linear declines.Zero is dropped to t4；
Due to VD1 clamper, the terminal voltages of Cr bis- are zero；
State 4, energy storage inductor Lf freewheeling periods (t4-t5),
Resonance current=0, resonance circuit is stopped, and input current Ii arrives input voltage by Lf and VT (opening state)
Negative, inductance Lf starts energy storage, and output capacitance Cf, to t5 switching tubes VT shut-offs, starts next work period to load discharge.
Further, the switching tube (VT) is that metal-oxide-semiconductor or IGBT are managed.
Further, the resonance impedance of resonant inductance and electric capacity is：
Filter capacitor Cf：
Energy storage boost inductance Lf：
Resonant capacitance Cr voltagesCapacitor charging time (0V to Vo), i.e.,：T=t1-t0。
The utility model Boost resonant type soft-switch converters, including：
Beneficial effect
The utility model Boost resonant type soft-switches converter possesses following beneficial effect with prior art：
Compare traditional Boost circuit：1, efficiency is greatly improved, and 2, power device caloric value is decreased obviously.3,
Low is required to the voltage stress of power device.4, the radiator used in power device is small.Some, is conducive to complete machine stable above
Property, further reduce fault rate.Particularly efficiency improves the energy-saving and environment friendly for being conducive to country to advocate.The circuit merely add
Two electronic components, there is very high cost performance.Boost resonance soft switch circuits are widely used.
Brief description of the drawings
Fig. 1 is Boost converter ZVS quasi-resonance circuits of the present utility model；
Fig. 2 is four kinds of on off state equivalent circuits of the utility model；
Fig. 3 is utility model works waveform；
Fig. 4 is the utility model circuit structure diagram.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Embodiment
The present embodiment Boost resonant type soft-switch converters, it is characterised in that including：Power supply, energy storage boost inductance (Lf),
Switching tube (VT), the parasitic diode (VD1) of switching tube (VT), resonant capacitance (Cr), resonant inductance (Lr), filter capacitor
(Cf), switching and rectifying diode (VD2) and for load (Rr), wherein, power supply positive output end by energy storage boost inductance (Lf),
Switching tube (VT) connects power supply negative terminal, and the parasitic diode (VD1) of switching tube (VT) is in parallel with switching tube (VT), power supply it is just defeated
Go out end and power supply negative terminal, resonant capacitance (Cr), filter capacitor are also connected by resonant inductance (Lr), switching and rectifying diode (VD2)
(Cf) in parallel with switching tube (VT) respectively, load (Rr) is connected in parallel on filter capacitor (Cf) two ends.
Operation principle：
As shown in Figure 2:It is a Boost converter ZVS quasi-resonance circuits.It is to increase in traditional Boost circuit
Bis- electronic components of resonant inductance Lr and resonant capacitance Cr are added.VT is switching tube, and VD1 is VT parasitic diodes, and Lf is energy storage
Boost inductance, VD2 is switching and rectifying diode, and Cf is filter capacitor, and Rr is load.
By Lr, Cr resonance is that VT switch tube zero voltages are opened and created conditions.
For convenience of analysis, it is assumed that：
1, all diodes, switching tube, electric capacity, inductance is desired electronic element.
2, and Lf>>Lr, Lf are sufficiently large, in a switch periods, and Ii electric currents are held essentially constant, Lf and input voltage
Vi can regard a constant-current source Ii as.
3, Cf capacity are sufficiently large.In a switch periods, Vo voltages are held essentially constant, and Cf and load resistance Rr are seen
Into being constant pressure source Vo.
Boost converter ZVS quasi-resonances circuit (a switch periods Ts) has four kinds of on off states.Shown in Fig. 2,
For four kinds of on off state equivalent circuits.Fig. 3 is work wave.Fig. 4 is traditional Boost converter.
State 1, resonant capacitance Cr charging stages (t0-t1).
Before to, switching tube VT conductings, input current Ii (is turned on) through VT afterflows, makes the terminal voltages of resonant capacitance Cr bis-
State is off for 0V, VD1, now the voltage Vcr of resonant capacitance<Vo, switching tube parasitic diode VD1 are humorous in reverse-biased
The inductance Lr electric currents that shake are 0A, in moment switching tubes VT shut-offs, and input current Ii charges to resonant capacitance Cr, and capacitance voltage is from 0V
Start linear rise.Now switching tube VT C points are that 0V, i.e. VT are zero voltage turn-offs.
State 2, resonant stage (t1-t3).
When resonant capacitance Cr voltage is charged to Vo, Cr and Lr start electric current ILr on resonance, inductance Lr since 0
Rise.When beginning to ramp up from t1 to t2, Ilr=I0, now Vcr voltages are to maximum Vcr (max), the Ilr since t2>I0
Now, Cr start electric discharge Vcr voltages begin to decline.Drop to 0V to Vcr voltages during t3, diode VD1 starts to lead
It is logical, make VT voltage clamping to 0V, now VT conductings, i.e. VT no-voltages are turned on.
State 3, resonant inductance Lr discharge regimes (t3-t4).
Now VT is turned on, and input current Ii is negative to input voltage by VT, and it is 0V to make C points voltage, and inductance Lf starts energy storage.
Voltage=the Vo at the ends of resonant inductance Lr bis-, resonant inductance Lr start electric discharge, electric current Ilr linear declines.Zero is dropped to t4.
Due to VD1 clamper, the terminal voltages of Cr bis- are zero.
State 4, energy storage inductor Lf freewheeling periods (t4-t5).
Resonance current=0, resonance circuit is stopped, and input current Ii arrives input voltage by Lf and VT (opening state)
Negative, inductance Lf starts energy storage, and output capacitance Cf is to load discharge.To t5 switching tubes VT shut-offs.Start next work period.
Realizing switching tube VT ZVS quasi-resonance conditions of work is：
Learnt by Fig. 3.
1, in order to which the voltage resonance ensured on Cr is zero, the crest voltage of resonant sinusoidal have to be larger than 2V.
I.e.：Vcr(max)|>2V, simplifies, Ii Zr>2V.
During 2, VT shut-off, voltage on Cr must resonance be that should be greater than or equal to the 1/ of harmonic period zero, the VT turn-off times
2。
I.e.：
VT turn-off time is first determined, according to above-mentioned condition, resonant inductance Lr and resonant capacitance Cr can be drawn.
The design of main devices is calculated：
1, the resonance impedance of resonant inductance and electric capacity is：
2, filter capacitor Cf：
3, energy storage boost inductance Lf：
4, resonant capacitance Cr voltagesCapacitor charging time (0V to Vo), i.e.,：T=t1-t0。
To the utility model it should be appreciated that embodiment described above, to the purpose of this utility model, technical scheme
Further details of explanation has been carried out with beneficial effect, embodiment of the present utility model is these are only, has been not used to limit
The utility model, every within spiritual principles of the present utility model, made any modification, equivalent substitution and improvements etc.,
It should be included within protection domain of the present utility model, the guarantor that protection domain of the present utility model should be defined with claim
Shield scope is defined.
Claims (2)
1. a kind of Boost resonant type soft-switches converter, it is characterised in that including：Power supply, energy storage boost inductance Lf, switching tube VT,
The parasitic diode VD1 of switching tube, resonant capacitance Cr, resonant inductance Lr, filter capacitor Cf, switching and rectifying diode VD2 and
For load Rr, wherein, power supply positive output end is by energy storage boost inductance Lf, switching tube VT connection power supply negative terminals, and switching tube is posted
Raw diode VD1 is in parallel with switching tube VT, and the positive output end of power supply is also connected by resonant inductance Lr, switching and rectifying diode VD2
Power supply negative terminal is connect, resonant capacitance Cr, filter capacitor Cf are in parallel with switching tube VT respectively, load Rr is connected in parallel on the two of filter capacitor Cf
End；
State 1, resonant capacitance Cr charging stages t0To t1,
In t0Before, switching tube VT is turned on, and input current Ii is through switching tube VT afterflows, and it is 0V to make the terminal voltages of resonant capacitance Cr bis-, is opened
The parasitic diode VD1 for closing pipe is off state, now the voltage Vcr of resonant capacitance<Vo, switching tube parasitic diode VD1
In reverse-biased, resonant inductance Lr electric currents are 0A, in moment switching tubes VT shut-offs, and input current Ii charges to resonant capacitance Cr,
Capacitance voltage linear rise since 0V, now switching tube VT C points are that 0V, i.e. VT are zero voltage turn-offs；
State 2, resonant stage t1To t3,
When resonant capacitance Cr voltage is charged to Vo, resonant capacitance Cr and resonant inductance Lr start on resonance, resonant inductance Lr
Electric current ILrBegun to ramp up from 0, from t1Begin to ramp up t2When, the electric current I of resonant inductanceLr=I0, now resonant capacitance electricity
Press VcrTo maximum Vcr (max), the electric current I of resonant inductance since t2Lr>I0；Now, resonant capacitance Cr starts electric discharge, humorous
The voltage Vcr voltages of electric capacity of shaking are begun to decline；Voltage Vcr voltages to resonant capacitance during t3 drop to 0V, the parasitism of switching tube
Diode VD1 is begun to turn on, and makes switching tube VT voltage clamping to 0V, and now switching tube VT is turned on, i.e. switching tube VT no-voltages
Conducting；
State 3, resonant inductance Lr discharge regime t3-t4,
Now switching tube VT is turned on, and input current Ii is negative to input voltage by switching tube VT, and it is 0V, energy storage liter to make C points voltage
Voltage inductance Lf starts energy storage, the voltage=Vo at the ends of resonant inductance Lr bis-, and resonant inductance Lr starts electric discharge, the electric current I of resonant inductanceLr
Linear decline, zero is dropped to t4；
Due to the parasitic diode VD1 of switching tube clamper, the terminal voltages of resonant capacitance Cr bis- are zero；
State 4, energy storage boost inductance Lf freewheeling periods t4 to t5,
Resonance current=0, resonance circuit is stopped, and input current Ii passes through Lf and switching tube VT negative, energy storage to input voltage
Boost inductance Lf starts energy storage, and export resonance electric capacity Cf, to t5 switching tubes VT shut-offs, starts next work week to load discharge
Phase.
2. Boost resonant type soft-switches converter according to claim 1, it is characterised in that the switching tube VT is metal-oxide-semiconductor
Or IGBT pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170368.3U CN206442297U (en) | 2016-10-26 | 2016-10-26 | Boost resonant type soft-switch converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170368.3U CN206442297U (en) | 2016-10-26 | 2016-10-26 | Boost resonant type soft-switch converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206442297U true CN206442297U (en) | 2017-08-25 |
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ID=59644200
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621170368.3U Expired - Fee Related CN206442297U (en) | 2016-10-26 | 2016-10-26 | Boost resonant type soft-switch converters |
Country Status (1)
| Country | Link |
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| CN (1) | CN206442297U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649797A (en) * | 2018-06-15 | 2018-10-12 | 广东机电职业技术学院 | A kind of DC-DC power source structure based on the positive negative outputs of Boost |
| CN115664201A (en) * | 2022-10-27 | 2023-01-31 | 江苏韩娜新能源有限公司 | High-gain low-loss Boost converter and power supply system thereof |
| CN117792087A (en) * | 2024-02-23 | 2024-03-29 | 江苏展芯半导体技术股份有限公司 | Low-voltage non-isolated DC converter and control method thereof |
-
2016
- 2016-10-26 CN CN201621170368.3U patent/CN206442297U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649797A (en) * | 2018-06-15 | 2018-10-12 | 广东机电职业技术学院 | A kind of DC-DC power source structure based on the positive negative outputs of Boost |
| CN108649797B (en) * | 2018-06-15 | 2023-05-26 | 广东机电职业技术学院 | DC-DC power supply structure based on Boost positive and negative output |
| CN115664201A (en) * | 2022-10-27 | 2023-01-31 | 江苏韩娜新能源有限公司 | High-gain low-loss Boost converter and power supply system thereof |
| CN115664201B (en) * | 2022-10-27 | 2023-10-24 | 国网浙江省电力有限公司杭州市临安区供电公司 | Boost converter with high gain and low loss and power supply system thereof |
| CN117792087A (en) * | 2024-02-23 | 2024-03-29 | 江苏展芯半导体技术股份有限公司 | Low-voltage non-isolated DC converter and control method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20181026 |