CN205847105U - A kind of three level frequency multiplication LLC resonant transformation devices - Google Patents
A kind of three level frequency multiplication LLC resonant transformation devices Download PDFInfo
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- CN205847105U CN205847105U CN201620649894.1U CN201620649894U CN205847105U CN 205847105 U CN205847105 U CN 205847105U CN 201620649894 U CN201620649894 U CN 201620649894U CN 205847105 U CN205847105 U CN 205847105U
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Abstract
A kind of three level frequency multiplication LLC resonant transformation devices, including the input derided capacitors being sequentially connected with, switch brachium pontis, resonator cavity, transformator and current rectifying and wave filtering circuit；Input derided capacitors is made up of two electric capacity being connected in series, and the other end of two electric capacity is connected with the both positive and negative polarity of power supply respectively；Switch brachium pontis is to be sequentially connected in series by the drain-source pole of four switching tubes with body diode or parallel connection outside diode, the drain-source pole of the switching tube being positioned at switch brachium pontis two ends is connected with the both positive and negative polarity of power supply respectively, and the intermediate connection point of middle two switching tubes and the intermediate connection point of two electric capacity are connected；Resonator cavity is sequentially connected in series by resonant inductance, resonant capacitance and static exciter inductance, the intermediate connection point of the resonant inductance other end and the first switching tube and second switch pipe is connected, and the intermediate connection point of the static exciter inductance other end and the 3rd switching tube and the 4th switching tube is connected；Transformer secondary is connected with the input of current rectifying and wave filtering circuit；This utility model sends out ripple by the driving of appropriate design switching tube, it is achieved that switch tube voltage stress clamps, and has reached the effect of resonator cavity power device frequency multiplication work simultaneously.
Description
Technical field
This utility model relates to a kind of controlled resonant converter, is specifically related to a kind of three level frequency multiplication LLC resonant transformation devices.
Background technology
Controlled resonant converter has that switching frequency is high, switching loss is little, efficiency is high, light weight, volume are little, EMI noise is little, opens
Close the advantages such as stress is little.LLC resonant converter has primary side switch pipe and easily realizes full-load range ZVS, and secondary diode is easily real
Existing ZCS, resonant inductance and transformator easily realize the advantages such as magnetic is integrated, are widely used in recent years.Meanwhile, high defeated for solving
Three level are incorporated in LLC changer by primary switch pipe high voltage stress problem when entering voltage application.Three traditional level
LLC resonant converter needs to introduce position diode and realizes switch tube voltage stress is restricted to input voltage half, so
The switching tube of relative low voltage specification can be selected.But the introducing of position diode adds cost, and circuit is more complicated simultaneously.Separately
Outward, limited by semiconductor device switch loss and drive circuit, relatively low (usual tens KHz of LLC resonance circuit operating frequency
To 200 KHz), still there is certain constraint for magnetic device (resonance transformer, the inductance) miniaturization in circuit.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists, this utility model provides a kind of three level frequency multiplication LLC resonance to become
Changing device, by the control to switching tube each in changer, makes full use of topological circuit breaker in middle pipe institute in parallel during control
Diode realize the position of switch tube both end voltage, reducing the purpose of switch tube voltage stress；With traditional three level
LLC circuit topology is compared, this circuit topological structure is fewer than traditional three-level LLC circuit independent position diode, this electricity
Road simplifies circuit structure to a certain extent, decreases power device；Compared with traditional LLC circuit topology, this circuit is humorous
Chamber operating frequency of shaking is the twice of switching tube switching frequency, and under identical switching frequency, magnetic device can be with the frequency of twice
Rate works, such that it is able to reduced further by magnetic device volume, is advantageously implemented the high frequency of product, planarization, miniaturization,
Reduce cost on the whole.
In order to achieve the above object, this utility model adopts the following technical scheme that
A kind of three level frequency multiplication LLC resonant transformation devices, including the input derided capacitors 1 being sequentially connected with, switch brachium pontis 2,
Resonator cavity 3, transformator 4 and current rectifying and wave filtering circuit 5；Described input derided capacitors 1 is by the first electric capacity C1 and second being connected in series
Electric capacity C2 forms, and the other end of the first electric capacity C1 and the second electric capacity C2 is connected with positive pole and the negative pole of power supply respectively；Described open
Close brachium pontis 2 by with the first switching tube Q1 of body diode or parallel connection outside diode, second switch pipe Q2, the 3rd switching tube Q3
It is sequentially connected in series with the drain-source pole of the 4th switching tube Q4, is positioned at the drain electrode and the 4th of the first switching tube Q1 at switch brachium pontis two ends
The source electrode of switching tube Q4 is connected with positive pole and the negative pole of power supply respectively, in described second switch pipe Q2 and the 3rd switching tube Q3
Between junction point be connected with the intermediate connection point of the first electric capacity C1 and the second electric capacity C2 in input derided capacitors 1；Described resonator cavity 3
It is to be sequentially connected in series resonance circuit by resonant inductance Lr, resonant capacitance Cr and static exciter inductance Lm, described inductance Lr's
The other end is connected with the intermediate connection point of the first switching tube Q1 in switch brachium pontis 2 and second switch pipe Q2, described transformator
The other end of magnetizing inductance Lm is connected with the intermediate connection point of the 3rd switching tube Q3 in switch brachium pontis 2 and the 4th switching tube Q4
Connect；The secondary of transformator 4 is connected with the input of current rectifying and wave filtering circuit 5；Described current rectifying and wave filtering circuit 5 be use general whole
The mode of stream bridge and outfan parallel filtering electric capacity carries out rectifying and wave-filtering.
The driving process of each switching tube is: be a switch periods between t1 to T, the first switching tube Q1 and the 4th switch
It is complementary that pipe Q4 is driven to band dead band, and dutycycle is close to 25%, and it is mutual that second switch pipe Q2 and the 3rd switching tube Q3 is driven to band dead band
Mending, dutycycle is close to 75%；T1 moment the first switching tube Q1 and the 3rd switching tube Q3 simultaneously turns on, second switch pipe Q2 and the 4th
Switching tube Q4 turns off；In the t2 moment, the first switching tube Q1 is first turned off, and the 3rd switching tube Q3 continues conducting, by second switch pipe
The second diode D2 afterflow that Q2 is in parallel, through Dead Time tdeadOpen-minded to t3 moment second switch pipe Q2 no-voltage；At t3
～the t4 time, by Q2 and Q3 afterflow and reverse resonance；T4 moment the 3rd switching tube Q3 turns off, in parallel by the 4th switching tube Q4
The 4th diode D4 afterflow；Through Dead Time tdeadOpen-minded to t5 moment the 4th switching tube Q4 no-voltage；When t5～t6
Between, by Q2 and Q4 afterflow and forward resonance；T6 moment the 4th switching tube Q4 turns off, and second switch pipe Q2 continues conducting, passes through
The 3rd diode D3 afterflow that 3rd switching tube Q3 is in parallel；Through Dead Time tdeadTo t7 moment the 3rd switching tube Q3 no-voltage
Open-minded；In t7～the t8 time, by Q2 and Q3 afterflow and reverse resonance；T8 moment second switch pipe Q2 turns off, and opens by first
Close pipe Q1 the first diode D1 afterflow in parallel；Through Dead Time tdeadTerminate to cycle T, enter next cycle first and open
Close pipe Q1 no-voltage open-minded.
This utility model compared with prior art, has the advantage that
Relative to traditional half-bridge three-level LLC circuit, this utility model eliminates two independent position diodes, logical
Ripple is sent out in the driving crossing appropriate design switching tube, and the voltage stress plateau value making each switching tube be born when turning off is inlet highway electricity
The half of pressure is identical with the effect using independent bits diode to be reached；Relative to traditional LLC circuit, this circuit resonance
Chamber operating frequency is the twice of switching tube switching frequency, and under identical switching frequency, magnetic device can be with the frequency of twice
Work, such that it is able to reduced further by magnetic device volume, is advantageously implemented the high frequency of product, planarization, miniaturization, from
Reduce cost on the whole.
Accompanying drawing explanation
Fig. 1 is novel three level frequency multiplication LLC converter topology circuit.
Fig. 2 is each switching tube drive waveforms in three level frequency multiplication LLC converter topology circuit.
Fig. 3 is t1～t2 time current flow graph.
Fig. 4 is t2～t3 time current flow graph.
Fig. 5 is t3～t4 time current flow graph.
Fig. 6 is t4～t5 time current flow graph.
Fig. 7 is t5～t6 time current flow graph.
Fig. 8 is t6～t7 time resonance current flow graph.
Fig. 9 is t7～t8 time resonance current flow graph.
Figure 10 is t8～T time resonance current flow graph.
Figure 11 is key node oscillogram.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, this utility model is described in further detail.
Fig. 1 is novel three level frequency multiplication LLC converter topology circuit, as it can be seen, a kind of three level times of this utility model
Frequently LLC resonant transformation device, including the input derided capacitors 1 being sequentially connected with, switch brachium pontis 2, resonator cavity 3, transformator 4 and rectification
Filter circuit 5；Described input derided capacitors 1 is made up of the first electric capacity C1 being connected in series and the second electric capacity C2, the first electric capacity C1
It is connected with positive pole and the negative pole of power supply respectively with the other end of the second electric capacity C2；Described switch brachium pontis 2 is by with body diode
Or the first switching tube Q1 of parallel connection outside diode, second switch pipe Q2, the 3rd switching tube Q3 and the drain-source of the 4th switching tube Q4
Pole is sequentially connected in series, be positioned at switch brachium pontis two ends the first switching tube Q1 drain electrode and the 4th switching tube Q4 source electrode respectively with
The positive pole of power supply is connected with negative pole, the intermediate connection point of described second switch pipe Q2 and the 3rd switching tube Q3 and input dividing potential drop electricity
Hold the intermediate connection point of the first electric capacity C1 and the second electric capacity C2 in 1 to be connected；Described resonator cavity 3 be by inductance Lr, electric capacity Cr and
Magnetizing inductance Lm is sequentially connected in series resonance circuit, the other end of described inductance Lr and the first switching tube Q1 in switch brachium pontis 2
It is connected with the intermediate connection point of second switch pipe Q2, in the other end of described static exciter inductance Lm and switch brachium pontis 2
The intermediate connection point of the 3rd switching tube Q3 and the 4th switching tube Q4 is connected；The secondary of transformator 4 is defeated with current rectifying and wave filtering circuit 5
Enter end to be connected；Described current rectifying and wave filtering circuit 5 is to use general rectifier bridge (all-wave or full-bridge rectification) and outfan parallel connection filter
The mode of ripple electric capacity carries out rectifying and wave-filtering.
Fig. 2 is each switching tube drive waveforms in three level frequency multiplication LLC converter topology circuit, as it can be seen, from t1 to T it
Between be a switch periods, t1 moment the first switching tube Q1 and the 3rd switching tube Q3 simultaneously turns on, second switch pipe Q2 and the 4th
Switching tube Q4 turns off；In the t2 moment, the first switching tube Q1 is first turned off, and the 3rd switching tube Q3 continues conducting, through Dead Time
tdeadOpen-minded to t3 moment second switch pipe Q2 no-voltage；In t3～the t4 time, by Q2 and Q3 afterflow and reverse resonance；During t4
Carve the 3rd switching tube Q3 to turn off；Through Dead Time tdeadOpen-minded to t5 moment the 4th switching tube Q4 no-voltage；When t5～t6
Between, by Q2 and Q4 afterflow and forward resonance；T6 moment the 4th switching tube Q4 turns off, and second switch pipe Q2 continues conducting；Pass through
Dead Time tdeadOpen-minded to t7 moment the 3rd switching tube Q3 no-voltage；In t7～the t8 time, by Q2 and Q3 afterflow and reversely
Resonance；T8 moment second switch pipe Q2 turns off, by the first first diode D1 afterflow in parallel for switching tube Q1；Through dead band
Time tdeadTerminate to cycle T, enter next cycle the first switching tube Q1 no-voltage open-minded.
Circuit topology work process in a switch periods and current direction:
As a example by fs=fr (fr is resonant inductance Lr, the series resonance frequency of resonant capacitance Cr,) should
LLC circuit work process mainly includes following critical stage:
Fig. 3 is t1～t2 time current flow graph.In the t1 moment, the first switching tube Q1 and the 3rd switching tube Q3 leads simultaneously
Logical, second switch pipe Q2 and the 4th switching tube Q4 turns off, hereafter the first electric capacity from derided capacitors 1 successively of the electric current in circuit
C1 negative pole flows through the 3rd switching tube Q3, resonator cavity the 3, first switching tube Q1, returns to the first electric capacity C1 positive pole；Resonant inductance Lr, humorous
The electric capacity Cr that shakes carries out resonance, by energy feedback to positive bus-bar, continues forward resonance after resonance to zero, and current direction is followed successively by first
Switching tube Q1, resonator cavity the 3, the 3rd switching tube Q3.During t1～t2, resonance current be more than exciting current, by transformator 4 to
Secondary transmission energy.Diode D5 and D8 conducting in current rectifying and wave filtering circuit 5, therefore, transformer primary voltage is clamped N*Vo (N
For the transformer primary secondary turn ratio, Vo is changer VD), exciting current linear rise.Second switch during Gai
The voltage that pipe Q2 and the 4th switching tube Q4 two ends are born is respectively the first electric capacity C1 and the second electric capacity C2 in input derided capacitors 1
The voltage at two ends, i.e. Vin/2.
Fig. 4 is t2～t3 time current flow graph.In the t2 moment, the first switching tube Q1 is first turned off, and the 3rd switching tube Q3 continues
Continuous conducting, the first switching tube Q1 closes and has no progeny, and the first switching tube Q1 junction capacity is charged, to second switch pipe Q2 knot electricity by resonance current
Discharge capacitor, after discharge and recharge completes, the first switching tube Q1 drain-source voltage by the voltage that position is the first electric capacity C1 two ends, i.e. Vin/2,
Second switch pipe Q2 junction capacity terminal voltage is 0V, and the second diode D2 in parallel for second switch pipe Q2 turns on afterflow naturally.From
As shown in Figure 4, electric current flows successively through the two or two pole that second switch pipe Q2 is in parallel to current direction in t2～t3 moment circuit
Pipe D2, resonator cavity the 3, the 3rd switching tube Q3.
Fig. 5 is t3～t4 time current flow graph.T3 moment second switch pipe Q2 drives enable, and no-voltage is open-minded.Hereafter
Electric current in circuit flows successively through second switch pipe Q2, resonator cavity the 3, the 3rd switching tube Q3, resonant inductance Lr, resonant capacitance Cr enter
Row resonance, continues reverse resonance after resonance to zero, current direction is followed successively by resonator cavity 3, second switch pipe Q2, the 3rd switching tube
Q3.During t3～t4, resonance current is less than exciting current, transmits energy by transformator 4 to secondary.In current rectifying and wave filtering circuit 5
Diode D6 and D7 turns on, and therefore, transformer primary voltage is clamped-N*Vo, and (N is the transformer primary secondary turn ratio, and Vo is conversion
Device VD), exciting current linear decline.During Gai, the first switching tube Q1 and the 4th switching tube Q4 two ends be born
Voltage be respectively input derided capacitors 1 in the first electric capacity C1 and the voltage at the second electric capacity C2 two ends, i.e. Vin/2.
Fig. 6 is t4～t5 time current flow graph.In the t4 moment, the 3rd switching tube Q3 is first turned off, and second switch pipe Q2 continues
Continuous conducting, the 3rd switching tube Q3 closes and has no progeny, and the 3rd switching tube Q3 junction capacity is charged, to the 4th switching tube Q4 knot electricity by resonance current
Discharge capacitor, after discharge and recharge completes, the 3rd switching tube Q3 drain-source voltage by the voltage that position is the second electric capacity C2 two ends, i.e. Vin/2,
4th switching tube Q4 junction capacity terminal voltage is 0V, and the 4th diode D4 in parallel for the 4th switching tube Q4 turns on afterflow naturally.This mistake
Journey is maintained to the t5 moment.
Fig. 7 is t5～t6 time current flow graph.In the t5 moment, second switch pipe MOS2 and the 4th switching tube MOS4 leads simultaneously
Logical, the first switching tube MOS1 and the 3rd switching tube MOS3 turns off, hereafter the electric current in circuit flow successively through the 4th switching tube MOS4,
Resonator cavity 3, second switch pipe MOS2, the second input capacitance C2, resonant inductance Lr, resonant capacitance Cr carry out resonance, are returned by energy
It is fed to negative busbar.During t5～t6, resonance current is more than exciting current, transmits energy by transformator 4 to secondary.Rectification is filtered
In wave circuit 5 diode D5 and D8 conducting, therefore, transformer primary voltage be clamped N*Vo (N is the transformer primary secondary turn ratio,
Vo is changer VD), exciting current linear rise.First switching tube Q1 and the 3rd switching tube Q3 two during Gai
The voltage that end is born is respectively the first electric capacity C1 and the voltage at the second electric capacity C2 two ends, i.e. Vin/2 in input derided capacitors 1.
Fig. 8 is t6～t7 time resonance current flow graph.In the t6 moment, the 4th switching tube Q4 is first turned off, second switch pipe
Q2 continues conducting, and the 4th switching tube Q4 closes and has no progeny, and the 4th switching tube Q4 junction capacity is charged, to the 3rd switching tube Q3 by resonance current
Junction capacity is discharged, and after discharge and recharge completes, the 4th switching tube Q4 drain-source voltage is by the voltage that position is the second electric capacity C2 two ends, i.e.
Vin/2, the 3rd switching tube Q3 junction capacity terminal voltage is 0V, and the 3rd diode D3 in parallel for the 3rd switching tube Q3 begins to turn on continuous
Stream.Current direction from t6～t7 moment circuit as shown in Figure 8, electric current flow successively through second switch pipe Q2, resonator cavity 3,
The 3rd diode D3 that three switching tube Q3 are in parallel.
Fig. 9 is t7～t8 time resonance current flow graph.T7 moment the 3rd switching tube Q3 drives enable, and no-voltage is open-minded.
Hereafter the electric current in circuit flows successively through second switch pipe Q2, resonator cavity the 3, the 3rd switching tube Q3, resonant inductance Lr, resonant capacitance
Cr carries out resonance, continues reverse resonance after resonance to zero, and current direction is followed successively by resonator cavity 3, second switch pipe Q2, the 3rd switch
Pipe Q3.During Gai, resonance current be less than exciting current, transmits energy by transformator 4 to secondary.In current rectifying and wave filtering circuit 5 two
Pole pipe D6 and D7 turns on, and therefore, transformer primary voltage is clamped-N*Vo, and (N is the transformer primary secondary turn ratio, and Vo is changer
VD), exciting current linear decline.During Gai, the first switching tube Q1 and the 4th switching tube Q4 two ends be born
Voltage is respectively the first electric capacity C1 and the voltage at the second electric capacity C2 two ends, i.e. Vin/2 in input derided capacitors 1.
Figure 10 is t8～T time resonance current flow graph.T8 moment second switch pipe Q2 is first turned off, and the 3rd switching tube Q3 continues
Continuous conducting, second switch pipe Q2 closes and has no progeny, and second switch pipe Q2 junction capacity is charged, to the first switching tube Q1 knot electricity by resonance current
Discharge capacitor, after discharge and recharge completes, second switch pipe Q2 drain-source voltage by the voltage that position is the first electric capacity C1 two ends, i.e. Vin/2,
First switching tube Q1 junction capacity terminal voltage is 0V, and the first diode D1 in parallel for the first switching tube Q1 turns on afterflow naturally.From t8
～the current direction in T moment circuit is as shown in Figure 10, electric current flows successively through resonator cavity the 3, first switching tube Q1 the in parallel 1st
Pole pipe D1, the 3rd switching tube Q3.
In above work process, the first switching tube Q1 closes and has no progeny, and second switch pipe Q2 the second diode D2 afterflow in parallel is led
Logical, it is achieved to the first switching tube Q1 drain-source voltage clamp (Vin/2), to be that the no-voltage of follow-up second switch pipe Q2 is open-minded simultaneously
Ready, second switch pipe Q2 opens the drain-source voltage of rear first switching tube Q1 and is clamped at Vin/2 always；
Second switch pipe Q2 closes and has no progeny, the first diode D1 afterflow conducting in parallel for the first switching tube Q1, it is achieved to first
Switching tube Q1 drain-source voltage clamp (Vin/2), the no-voltage for follow-up first switching tube Q1 is opened ready simultaneously, and first
Switching tube Q1 opens the drain-source voltage of rear first switching tube Q2 and is clamped at Vin/2 always；
3rd switching tube Q3 closes and has no progeny, the 4th diode D4 afterflow conducting in parallel for the 4th switching tube Q4, it is achieved to the 3rd
Switching tube Q3 drain-source voltage clamp (Vin/2), the no-voltage for follow-up 4th switching tube Q4 is opened ready simultaneously, and the 4th
Switching tube Q4 opens the drain-source voltage of rear 3rd switching tube Q3 and is clamped at Vin/2 always；4th switching tube Q4 closes and has no progeny, and the 3rd
3rd diode D3 afterflow conducting in parallel for switching tube Q3, it is achieved to the 4th switching tube Q4 drain-source voltage clamp (Vin/2), same
Time be that the no-voltage of subsequent third switching tube Q3 is opened ready, the 3rd switching tube Q3 open after the drain-source of the 4th switching tube Q4
Pole tension is clamped at Vin/2 always.As this changer can reach the three-level LLC topology with conventional belt clamp diode
Voltage stress effect, such that it is able to select the switching tube of conventional low voltage specification.Figure 11 is key node oscillogram, from upper
Be followed successively by the first switching tube Q1 driving under to, second switch pipe Q2 drives, the 3rd switching tube Q3 drives, the 4th switching tube Q4 drives
Dynamic, the first switching tube Q1 drain-source voltage stress, second switch pipe Q2 drain-source voltage stress, the 3rd switching tube Q3 drain-source are the most electric
(definition drain electrode is arrived for compressive stress, the 4th switching tube Q4 drain-source voltage stress, transformer primary voltage, the first switching tube Q1 electric current
Source current is just, otherwise is negative), second switch pipe Q2 electric current (definition drain-to-source electric current is for just, otherwise is negative), the 3rd
Switching tube Q3 electric current (definition drain-to-source electric current is just, otherwise is negative), the 4th switching tube Q4 electric current (definition drain-to-source
Electric current is just, otherwise is negative), cavity current (in definition Fig. 1 circuital current from resonant inductance to resonant capacitance direction for just,
Otherwise it is negative) and transformer magnetizing current (in definition Fig. 1, circuit excitation inductance current flows for just from top to bottom, otherwise is negative).
From above work process and Figure 11 it can be seen that the switch each switch periods of brachium pontis 2, resonator cavity completed for two weeks
The resonance of phase, in two switch periods, resonator cavity input energy is respectively positive bus-bar electric capacity C1 and negative mother in input derided capacitors 1
Line capacitance C2, thus realize the working effect of resonator cavity frequency multiplication.
Claims (2)
1. a level frequency multiplication LLC resonant transformation device, it is characterised in that: the input derided capacitors (1) that includes being sequentially connected with,
Switch brachium pontis (2), resonator cavity (3), transformator (4) and current rectifying and wave filtering circuit (5)；Described input derided capacitors (1) is by series connection even
The first electric capacity (C1) connect and the second electric capacity (C2) composition, the other end of the first electric capacity (C1) and the second electric capacity (C2) respectively with
The positive pole of power supply and negative pole connect；Described switch brachium pontis (2) is by the first switch with body diode or parallel connection outside diode
The drain-source pole of pipe (Q1), second switch pipe (Q2), the 3rd switching tube (Q3) and the 4th switching tube (Q4) is sequentially connected in series, and is positioned at
The drain electrode of the first switching tube (Q1) at switch brachium pontis two ends and the source electrode of the 4th switching tube (Q4) respectively with the positive pole of power supply and bearing
Pole is connected, in the intermediate connection point of described second switch pipe (Q2) and the 3rd switching tube (Q3) and input derided capacitors (1) the
One electric capacity (C1) is connected with the intermediate connection point of the second electric capacity (C2)；Described resonator cavity (3) is by inductance (Lr), electric capacity (Cr)
It is sequentially connected in series in resonance circuit, the other end of described inductance (Lr) and switch brachium pontis (2) with static exciter inductance (Lm)
The first switching tube (Q1) be connected with the intermediate connection point of second switch pipe (Q2), described static exciter inductance (Lm) another
One end is connected with the intermediate connection point of the 3rd switching tube (Q3) in switch brachium pontis (2) and the 4th switching tube (Q4)；Transformator
(4) secondary is connected with the input of current rectifying and wave filtering circuit (5)；Described current rectifying and wave filtering circuit (5) is to use general rectification
The mode of bridge and outfan parallel filtering electric capacity carries out rectifying and wave-filtering.
A kind of three level frequency multiplication LLC resonant transformation devices, it is characterised in that: driving of each switching tube
Dynamic process is: be a switch periods between t1 to T, and the first switching tube (Q1) and the 4th switching tube (Q4) are driven to band dead band
Complementation, dutycycle is close to 25%, and it is complementary that second switch pipe (Q2) and the 3rd switching tube (Q3) are driven to band dead band, and dutycycle is close
75%；T1 moment the first switching tube (Q1) and the 3rd switching tube (Q3) simultaneously turn on, second switch pipe (Q2) and the 4th switching tube
(Q4) turn off；In the t2 moment, the first switching tube (Q1) is first turned off, and the 3rd switching tube (Q3) continues conducting, by second switch pipe
(Q2) the second diode (D2) afterflow in parallel, through Dead Time tdeadOpen to t3 moment second switch pipe (Q2) no-voltage
Logical；In t3～the t4 time, by second switch pipe (Q2) and the 3rd switching tube (Q3) afterflow and reverse resonance；The t4 moment the 3rd opens
Close pipe (Q3) to turn off, by the 4th diode (D4) afterflow that the 4th switching tube (Q4) is in parallel；Through Dead Time tdeadTo t5
Moment the 4th switching tube (Q4) no-voltage is open-minded；In t5～the t6 time, by second switch pipe (Q2) and the 4th switching tube (Q4)
Afterflow and forward resonance；The t6 moment the 4th switching tube (Q4) turns off, and second switch pipe (Q2) continues conducting, by the 3rd switching tube
(Q3) the 3rd diode (D3) afterflow in parallel；Through Dead Time tdeadOpen to t7 moment the 3rd switching tube (Q3) no-voltage
Logical；In t7～the t8 time, by second switch pipe (Q2) and the 3rd switching tube (Q3) afterflow and reverse resonance；The t8 moment second opens
Close pipe (Q2) to turn off, by the first diode (D1) afterflow that the first switching tube (Q1) is in parallel；Through Dead Time tdeadTo week
Phase, T terminated, and entered next cycle the first switching tube (Q1) no-voltage open-minded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620649894.1U CN205847105U (en) | 2016-06-27 | 2016-06-27 | A kind of three level frequency multiplication LLC resonant transformation devices |
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| CN201620649894.1U CN205847105U (en) | 2016-06-27 | 2016-06-27 | A kind of three level frequency multiplication LLC resonant transformation devices |
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| CN201620649894.1U Expired - Fee Related CN205847105U (en) | 2016-06-27 | 2016-06-27 | A kind of three level frequency multiplication LLC resonant transformation devices |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106026665A (en) * | 2016-06-27 | 2016-10-12 | 特变电工西安电气科技有限公司 | Novel three-level frequency multiplication LLC resonance converter |
| CN108123605A (en) * | 2018-01-31 | 2018-06-05 | 华为技术有限公司 | The control method of power converting circuit and line related translation circuit |
| CN109889042A (en) * | 2019-03-26 | 2019-06-14 | 深圳市健网科技有限公司 | The voltage conversion circuit and voltage switching control method of bidirectional DC power supply converter |
| CN110268617A (en) * | 2017-02-10 | 2019-09-20 | 西门子股份公司 | DC/DC converter with full-bridge control |
| CN110972355A (en) * | 2019-12-19 | 2020-04-07 | 哈尔滨工业大学 | Two-channel LED driver based on resonant switch capacitor |
| DE102020103839A1 (en) | 2020-02-13 | 2021-08-19 | Sma Solar Technology Ag | CIRCUIT ARRANGEMENT FOR SYMMETRATION OF A DIVIDED DC VOLTAGE INTERMEDIATE CIRCUIT |
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2016
- 2016-06-27 CN CN201620649894.1U patent/CN205847105U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026665A (en) * | 2016-06-27 | 2016-10-12 | 特变电工西安电气科技有限公司 | Novel three-level frequency multiplication LLC resonance converter |
| CN106026665B (en) * | 2016-06-27 | 2018-11-02 | 特变电工西安电气科技有限公司 | A kind of novel three level frequency multiplication LLC resonant converter |
| CN110268617A (en) * | 2017-02-10 | 2019-09-20 | 西门子股份公司 | DC/DC converter with full-bridge control |
| CN108123605A (en) * | 2018-01-31 | 2018-06-05 | 华为技术有限公司 | The control method of power converting circuit and line related translation circuit |
| CN108123605B (en) * | 2018-01-31 | 2020-06-26 | 华为技术有限公司 | Control method of power conversion circuit and related power conversion circuit |
| US11201549B2 (en) | 2018-01-31 | 2021-12-14 | Huawei Technologies Co., Ltd. | Control method of power conversion circuit, and related power conversion circuit |
| CN109889042A (en) * | 2019-03-26 | 2019-06-14 | 深圳市健网科技有限公司 | The voltage conversion circuit and voltage switching control method of bidirectional DC power supply converter |
| CN110972355A (en) * | 2019-12-19 | 2020-04-07 | 哈尔滨工业大学 | Two-channel LED driver based on resonant switch capacitor |
| DE102020103839A1 (en) | 2020-02-13 | 2021-08-19 | Sma Solar Technology Ag | CIRCUIT ARRANGEMENT FOR SYMMETRATION OF A DIVIDED DC VOLTAGE INTERMEDIATE CIRCUIT |
| US12074521B2 (en) | 2020-02-13 | 2024-08-27 | Sma Solar Technology Ag | Circuit arrangement for balancing a split DC link |
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