CN206807298U - A kind of two-way resonance translation circuit and converter - Google Patents
A kind of two-way resonance translation circuit and converter Download PDFInfo
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- CN206807298U CN206807298U CN201720357673.1U CN201720357673U CN206807298U CN 206807298 U CN206807298 U CN 206807298U CN 201720357673 U CN201720357673 U CN 201720357673U CN 206807298 U CN206807298 U CN 206807298U
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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 provides a kind of two-way resonance translation circuit and converter, the two-way resonance translation circuit of varistructure includes being sequentially connected the first filter circuit connect, the first full-bridge circuit, resonant transform circuit, the second full-bridge circuit and the second filter circuit, the primary and secondary side of resonant transform circuit is respectively arranged with resonant capacitance, and carries out break-make processing to it respectively by switch.Control method includes making full-bridge circuit enter active switch pattern or diode mode according to energy flow direction, and switch is respectively at closure or blocking state.Then the efficient two-way changing of energy is realized, more possesses practicality by the two-way full-bridge resonance DC/DC converter and its control method of variable structure.
Description
Technical field
The utility model is related to dc source converter technique, more particularly to a kind of varistructure two-way resonance translation circuit and
A kind of two-way full-bridge resonance DC/DC converter.
Background technology
In various application occasions such as new energy photovoltaic system, energy-storage system and charging system for electric automobile, it is desirable to electric energy
Energy in converter can be flowed to the energy-storage units such as battery by power network, be realized the storage of electric energy with two-way flow, energy,
Meanwhile require that energy can flow to power network or the individually output in the form of AC power from energy-storage units again, realize power network electric energy
Regulation or meet the use of electric energy under the conditions of off-network.For security consideration, this bi-directional energy conversion system is preferably
Realize the electrical isolation of input and output.At present, non-isolated ac-dc conversion circuit is highly developed, can be very easily real
The non-isolated energy in bidirectional flow of existing alternating current and intermediate dc unit.Therefore, the efficient isolated DC of electric energy/straight how is realized
Rheology is changed, and is current be badly in need of solving one so as to which that realizes intermediate dc unit and energy-storage units isolates bi-directional energy conversion
Realistic problem.
As long as it is traditional recommend, secondary commutation diode is replaced by out by the hard switching formal argument device such as half-bridge and full-bridge
Guan Guan, it is possible to simply and easily realize the two-way changing of circuit.But these hard switching circuits are because switching loss is excessive, conversion
It is less efficient, it is not suitable for high-power and frequency applications occasion.Especially, phase whole-bridging circuit form can realize primary side switch
Pipe it is soft open-minded, while can also simply and easily realize the double of circuit by the way that secondary commutation diode is replaced by into switching tube
To conversion.But it has two fatal weakness：First, secondary rectifying tube can not realize zero-current switching, second, former in the case of underloading
Side switching tube can not realize zero current turning-on.Which also limits phase whole-bridging circuit answering in isolation bidirectional, dc conversion field
With.
Resonant transform circuit especially LLC resonant transform circuits are a kind of soft switch circuits that fast development is got up in recent years
Topology.On the one hand, no matter under underloading or fully loaded transportation condition, LLC circuits can be easily achieved zero electricity of primary side switch pipe
Flow open-minded；On the other hand, LLC circuits can realize the zero-current switching of secondary commutation diode, reduce reverse recovery loss.
These all substantially reduce the switching loss of switch element in circuit, turn into Switching Power Supply topological form more popular at present.
But LLC circuits are not a kind of symmetrical circuit topology forms, when energy opposite direction flows, its circuit characteristic is no longer LLC
Resonance characteristic but deteriorate to LC resonance characteristics, working range during so as to greatly reduce reverse operation and exacerbate switch
Pipe realizes the difficulty of Sofe Switch.Therefore, traditional LLC resonance circuits are not too much suitable for being operated in the shape of energy in bidirectional flow
State.
The content of the invention
First purpose of the present utility model is to provide a kind of two-way resonance translation circuit with varistructure.
Second purpose of the present utility model is to provide a kind of with varistructure and energy two-way stable and becomes pair to change jobs
To full-bridge resonance DC/DC converter.
In order to realize the first purpose of the present utility model, the utility model provides a kind of two-way resonance translation circuit, including
It is sequentially connected the first filter circuit connect, the first full-bridge circuit, resonant transformation network, the second full-bridge circuit and the second filtered electrical
Road；
Resonant transformation network includes the first resonant inductance, winding, the first resonant capacitance, the second resonant capacitance, first switch
Module and second switch module；
The first end of first resonant capacitance is electrically connected with the first bridge arm of the first full-bridge circuit, and the first resonant inductance is connected to
Between second end of the first resonant capacitance and the first positive terminal of winding, first switch module is connected to the of the first resonant capacitance
Between one end and the second end, the second bridge arm electrical connection of the first negative pole end and the first full-bridge circuit of winding；
Second resonant capacitance is connected between the second positive terminal of winding and the first bridge arm of the second full-bridge circuit, and second opens
Close module to be connected between the both ends of the second resonant capacitance, the second negative pole end of winding and the second bridge arm electricity of the second full-bridge circuit
Connection.
Further scheme is to be in blocking state in first switch module, second switch module is in closure state
Under, the equivalent circuit of resonant transformation network is：
The first end of first resonant capacitance is electrically connected with the first bridge arm of the first full-bridge circuit, and the first resonant inductance is connected to
Between second end of the first resonant capacitance and the first positive terminal of winding, the first negative pole end of winding and the of the first full-bridge circuit
Two bridge arms electrically connect；
Second positive terminal of winding electrically connects with the first bridge arm of the second full-bridge circuit, the second negative pole end of winding and second
The second bridge arm electrical connection of full-bridge circuit.
Further scheme is to be in closure state in first switch module, second switch module is in blocking state
Under, the equivalent circuit of resonant transformation network is：
First positive terminal of winding electrically connects with the first bridge arm of the first full-bridge circuit, the first negative pole end of winding and first
The second bridge arm electrical connection of full-bridge circuit；
The first end of second resonant capacitance electrically connects with the first bridge arm of the second full-bridge circuit, the first resonant inductance it is equivalent
Resonant inductance is connected between the second end of the second resonant capacitance and the second positive terminal of winding, the second negative pole end of winding and
The second bridge arm electrical connection of two full-bridge circuits.
From such scheme, according to the difference of required energy transmission direction, control controllable switch module is respectively by primary side
Resonant capacitance or the short circuit of secondary resonant capacitance, so that the traditional LLC that oriented energy needed for circuit reduction into realization transmits is humorous
Shake circuit, and solves the problems, such as that traditional LLC resonant transform circuit reversely equal performance can not work using equivalent circuit, only
By increasing a small number of simple devices such as one group of resonant capacitance and two gate-controlled switches, the two-way LLC resonance of circuit is achieved that
Energy transmits.
In order to realize the second purpose of the present utility model, the utility model provides a kind of two-way full-bridge resonance DC/direct current
Converter, it is characterised in that：Including being sequentially connected the first filter circuit connect, the first full-bridge circuit, resonant transform circuit, second
Full-bridge circuit and the second filter circuit；
Two-way resonance translation circuit also includes control unit, control unit respectively with the first filter circuit, the second filtered electrical
Road electrically connects；
First bridge arm of the first full-bridge circuit is made up of first switch pipe and second switch pipe, the source electrode of first switch pipe with
The drain electrode connection of second switch pipe, the second bridge arm of the first full-bridge circuit are made up of the 3rd switching tube and the 4th switching tube, and the 3rd
The source electrode of switching tube is connected with the drain electrode of the 4th switching tube, first switch pipe, second switch pipe, the 3rd switching tube and the 4th switch
The grid of pipe is connected with control unit respectively；
First bridge arm of the second full-bridge circuit is made up of the 5th switching tube and the 6th switching tube, the source electrode of the 5th switching tube with
The drain electrode connection of 6th switching tube, the second bridge arm of the second full-bridge circuit are made up of the 7th switching tube and the 8th switching tube, and the 7th
The source electrode of switching tube is connected with the drain electrode of the 8th switching tube, the 5th switching tube, the 6th switching tube, the 7th switching tube and the 8th switch
The grid of pipe is connected with control unit respectively；
Resonant transformation network includes the first resonant inductance, winding, the first resonant capacitance, the second resonant capacitance, first switch
Module and second switch module；
The first end of first resonant capacitance electrically connects with the source electrode of first switch pipe, and it is humorous that the first resonant inductance is connected to first
Shake between the second end of electric capacity and the first positive terminal of winding, first switch module be connected to the first resonant capacitance first end and
Between second end, the source electrode electrical connection of the first negative pole end and the 3rd switching tube of winding；
Second resonant capacitance is connected between the second positive terminal of winding and the source electrode of the 5th switching tube, second switch module
It is connected between the both ends of the second resonant capacitance, the second negative pole end of winding electrically connects with the source electrode of the 7th switching tube.
From such scheme, the switching tube of the full-bridge circuit by controlling both sides, full-bridge circuit can be made to have the initiative out
Pass pattern or diode mode., then can be by the first full-bridge circuit when energy flows to the second filter circuit from the first filter circuit
Have the initiative switching mode, and the demand transmitted according to energy carries out the regulation of switching frequency, phase or dutycycle, and complete by second
Bridge circuit is in diode mode so that the second full-bridge circuit uses as rectification circuit, then realizes the conversion of energy.It is and anti-
Xiang Shi, then pattern is exchanged to the purpose that two-way changing can be achieved so that circuit more possesses practicality.And by using around
Group realizes the symmetrical two-way LLC resonant transformations of isolation, plays two DC port electrical isolations.
The opening and closing of the switch of both sides is utilized simultaneously, realizes the structurally variable of resonant transformation network, is realized positive or anti-
Resonant transformation network can be matched well during phase energy transmission, solved traditional LLC resonant transform circuit and be operated in energy
Its circuit characteristic deteriorates to the problem of LC resonant conditions during reverse flow, so that can be kept during converter two-way operation
Consistent LLC resonance characteristics, no matter so forward and reverse works, converter is all easy to keep original Sofe Switch to work
Characteristic and wider working range.
Further scheme is that resonant transformation network also includes energy storage inductor, and energy storage inductor is connected to the first positive terminal
And first between negative pole end.
Further scheme is that resonant transformation network also includes the second resonant inductance, and the second resonant inductance is connected in series
Between the second resonant capacitance and the first positive terminal of winding.Resonant parameter during due to forward and reverse work still has certain difference
, resonant parameter during in order to ensure forward and reverse work also keeps basically identical, therefore sets up the second resonant inductance.
Further scheme is that first switch module can use relay, contactor, MOS pipes or IGBT pipes；
The first switch control signal of first switch module reception control unit output.
Further scheme is that second switch module can use relay, contactor, MOS pipes or IGBT pipes；
The second switch control signal of second switch module reception control unit output.
Therefore the short circuit to resonant capacitance can be realized by a variety of on-off modes, and the operation of automatically controlledization is used,
Highly effective and safe.
Further scheme is that control unit includes control module and controller, and control module includes：
Adjustment control device, adjustment control device receive feedback signal and the preset signals of controller output, and feedback signal is to adopt
Obtained by the operating current or voltage of the first filter circuit or the second filter circuit, adjustment control device is according to preset signals and feedback
Signal operation draws control signal；
Phase operation circuit, phase operation circuit receive the control signal of adjustment control device output；
Frequency calculation circuit, frequency calculation circuit receive the control signal of adjustment control device output；
Pulse generating circuit, the frequency signal of pulse generating circuit receives frequency computing circuit output；
Phase-shift circuit, phase-shift circuit receive the reference pulse signal of pulse generating circuit output, while receiving phase computing
The phase signal of circuit output；
Drive circuit, drive circuit receive the reference pulse signal of pulse generating circuit output, and drive circuit is according to benchmark
Pulse signal is driven to the first bridge arm of the first full-bridge circuit, and drive circuit receives the phase-shift pulse letter of phase-shift circuit output
Number, drive circuit is driven according to phase-shift pulse signal to the second bridge arm of the first full-bridge circuit.
Therefore pass through above-mentioned converter so that the driving pulse of two bridge arms is no longer that conventional full bridge resonance becomes
Q1 and Q3 phase fixed phase difference 180 degrees in parallel operation, but anaplasia of its phase difference at 180~0 degree is controlled by phase control unit
Change, in addition to adjusting output voltage by changing the switching frequency of full-bridge switch pipe using conventional full bridge controlled resonant converter, also
It is poor by the switch phase for changing above-mentioned two bridge arms of full-bridge so that the output voltage range of controlled resonant converter is significantly expanded
Exhibition.And the comparison using feedback signal and preset signals so that the control of corresponding voltage is more convenient and corresponding fast.
And output voltage is adjusted by the way of phase shifting control, each bridge arm of full-bridge resonant transform circuit two up and down
Switching tube still remains the characteristic of complementary conducting, and so as to two bridge arms, can be easily carried out no-voltage open-minded, is opening up
The advantage of circuit soft switch is remained while opening up output voltage range.
Brief description of the drawings
Fig. 1 is the graph of a relation of LLC resonant transform circuits control frequency f and output voltage gain.
Fig. 2 is the system block diagram of the utility model full-bridge resonance DC/DC converter first embodiment.
Fig. 3 is the circuit diagram of output circuit in the utility model full-bridge resonance DC/DC converter first embodiment.
Fig. 4 is control signal and frequency, phase shift in the utility model full-bridge resonance DC/DC converter first embodiment
Graph of a relation between angle, output voltage.
Fig. 5 is reference pulse signal and phase shift in the utility model full-bridge resonance DC/DC converter first embodiment
The oscillogram of pulse signal.
Fig. 6 is the system block diagram of the two-way full-bridge resonance DC/DC converter first embodiment of the utility model.
Fig. 7 is the circuit diagram of the two-way full-bridge resonance DC/DC converter first embodiment of the utility model.
Fig. 8 is the circuit diagram of the two-way full-bridge resonance DC/DC converter second embodiment of the utility model.
Fig. 9 is the circuit diagram of the two-way full-bridge resonance DC/DC converter 3rd embodiment of the utility model.
Figure 10 is the circuit diagram of the two-way full-bridge resonance DC/DC converter fourth embodiment of the utility model.
Figure 11 is the system block diagram of the two-way full-bridge resonance DC of the utility model/embodiment of DC converter the 5th.
Figure 12 is the circuit diagram of the two-way full-bridge resonance DC of the utility model/embodiment of DC converter the 5th.
Figure 13 is the two-way full-bridge resonance DC/embodiment of DC converter the 5th of the utility model in the first flow direction conversion shape
Equivalent circuit diagram under state.
Figure 14 is the equivalent transformation principle schematic of resonant inductance and energy storage inductor at isolating transformer both ends.
Figure 15 is the two-way full-bridge resonance DC/embodiment of DC converter the 5th of the utility model in the second flow direction conversion shape
Equivalent circuit diagram under state.
Figure 16 is the circuit diagram of the two-way full-bridge resonance DC/DC converter sixth embodiment of the utility model.
Figure 17 is the circuit diagram of the two-way full-bridge resonance DC of the utility model/embodiment of DC converter the 7th.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
Before being illustrated to this case scheme, first the relation and its principle of control frequency f and output voltage gain are carried out
Illustrate, by taking existing LLC series resonant converters as an example, because resonant element is operated in sinusoidal resonance state, on switching tube
Voltage can be with natural zero-crossing so as to realizing that no-voltage is open-minded, and is easily achieved the zero-current switching of secondary rectifying tube, so as to
The turn-on consumption of switching tube is reduced, improves the whole efficiency of power supply.This kind of topological generally use Frequency-variable Modulation (PFM) side
Formula, the working frequency by adjusting switching tube reach the purpose of regulated output voltage.
The control principle of converter is by the complementary conducting of upper down tube to each bridge arm of full-bridge, the duty of each switching tube
Than simultaneously turning on and turning off close to 50%, and to Q1 and Q4 and Q2 and Q3, then the voltage being added on resonant network be+Vin~-
The square wave that Vin changes, dutycycle 50%, voltage effective value is close to Vin.If adjusted only with warbled mode defeated
Go out voltage, then the relation of electric power output voltage gain and switching frequency is：
Wherein, Vin and Vout is respectively input voltage and output voltage, and n is transformer voltage ratio, and Lr is resonant inductance value,
Cr is resonant capacitance value, and Lm is magnetizing inductance value, and f is working frequency,For resonant frequency,
Rg is output loading.
As can be seen from the above equation, in the case where input voltage and other circuit parameters are selected, LLC series resonances it is defeated
Go out voltage reduces with the raising of working frequency, and it controls frequency with the relation of output voltage gain as shown in figure 1, LLC connects
The boost capability of controlled resonant converter is limited, is raised within the specific limits with the reduction output voltage of working frequency.Exceed
This scope, on the contrary with working frequency reduce output voltage reduce, this do not meet circuit negative-feedback monotonicity requirement and
It can not be used in real work.Meanwhile the decompression ability of LLC series resonances is also limited, although in theory with work frequency
The raising output voltage of rate can be with continuous decrease, but considers the influence of actual circuit device high-frequency loss, and circuit work frequency is not
May be very high (typically up to 2 times or so of resonant frequency).Therefore, in certain operating frequency range, LLC series connection is humorous
Shake converting network output voltage can not possibly drop to it is very low, particularly in the case of light load.In summary, LLC resonance becomes
Although parallel operation is with Sofe Switch is easily realized so as to improve the advantage of circuit efficiency, obviously weak tendency is only for one
It is very narrow using output voltage range during warbled control mode, it is impossible to which that applying is needing the occasion of wide range output.
On the other hand, no matter under underloading or fully loaded transportation condition, LLC circuits can be easily achieved primary side and open simultaneously
Close the zero current turning-on of pipe；Also, LLC circuits can realize the zero-current switching of secondary commutation diode, reduce reversely extensive
Multiple loss.These all substantially reduce the switching loss of switch element in circuit, therefore as Switching Power Supply more popular at present
Topological form.But LLC circuits are not a kind of symmetrical circuit topology forms, when energy opposite direction flows, its circuit characteristic
No longer be LLC resonance characteristics but deteriorate to LC resonance characteristics, working range during so as to greatly reduce reverse operation and
Exacerbate the difficulty that switching tube realizes Sofe Switch.Therefore, traditional LLC resonant transformations network is not too much suitable for being operated in energy
In the state of two-way flow, in order to solve the above problems, this case uses following scheme.
Full-bridge resonance DC/DC converter and its control method first embodiment：
Reference picture 2, full-bridge resonance DC/DC converter include output circuit and control module 20, and control module 20 is wrapped
Include adjustment control device 14, phase operation circuit 15, frequency calculation circuit 16, pulse generating circuit 17, phase-shift circuit 18 and driving
Circuit 19, output circuit include full-bridge circuit 11, resonant transform circuit 12 and the current rectifying and wave filtering circuit 13 being sequentially connected, full-bridge electricity
Road 11 receive input voltage and receive drive circuit 19 switch control, the outside output services voltage of current rectifying and wave filtering circuit 13 and
Electric current.
Reference picture 3, the first bridge arm of full-bridge circuit are made up of first switch pipe Q1 and second switch pipe Q2, full-bridge circuit
The second bridge arm be made up of the 3rd switching tube Q3 and the 4th switching tube Q4, first switch pipe Q1 and the 3rd switching tube Q3 drain electrode with
Electrode input end is connected, and second switch pipe Q2 and the 4th switching tube Q4 source electrode are connected with negative input.First switch pipe
Q1 source electrode is connected with second switch pipe Q2 drain electrode, and the 3rd switching tube Q3 source electrode is connected with the 4th switching tube Q4 drain electrode,
First switch pipe Q1, second switch pipe Q2, the 3rd switching tube Q3 and the 4th switching tube Q4 grid connect with drive circuit 19 respectively
Connect.
Resonant transform circuit 12 uses LLC resonant transform circuits in the present embodiment, and resonant transform circuit 12 includes inductance
Lr, electric capacity Cr, inductance Lm and winding T1, inductance Lm are connected in parallel on winding T1 input, electric capacity Cr first end and winding T1
Electrode input end connection, electric capacity Cr the second end is connected with inductance Lr first end, inductance Lr the second end and first switch
Pipe Q1 source electrode connection, winding T1 negative input are connected with the 3rd switching tube Q3 source electrode.
Current rectifying and wave filtering circuit 13 includes rectification circuit and filter circuit, and filter circuit can be connected in parallel on output using electric capacity Co
End is formed, and rectification circuit can use the full-wave rectifying circuit or such as Fig. 3 (b) half-wave rectifying circuits as shown in Fig. 3 (a).All-wave is whole
Current circuit is connected and composed by four diodes D1, D2, D3 and D4, and half-wave rectifying circuit is made up of two diodes D1 and D2.
Illustrated with reference to the control method of converter and the structure of converter, can root when being controlled to converter
According to control purpose, preset signals, the work of the output of sampling harmonic DC to DC converter are exported to adjustment control device 4 first
For curtage as feedback signal, adjustment control device 4 then carries out negative-feedback computing according to feedback signal and preset signals, and transports
Calculation draws control signal.Subsequent adjustment control device 4 judges the magnitude relationship of preset signals and feedback signal, as feedback signal is more than
Preset signals, then export the control signal Va to diminish, and phase operation circuit 15 receives and according to the control signal Va outputs to diminish
The phase signal that phase shifting angle diminishes, frequency calculation circuit 16 receive and become big base according to the control signal Va output frequencies to diminish
Quasi- frequency signal.
As feedback signal is less than preset signals, then output becomes big control signal Va, and phase operation circuit 15 receives and root
Become big phase signal according to big control signal Va output phase shifting angles are become, frequency calculation circuit 15 receives and according to the big control of change
The reference frequency signal that signal Va output frequencies processed diminish.
The reference frequency signal of the receives frequency computing circuit 16 of pulse generating circuit 17 output, the receiving phase of phase-shift circuit 18
The phase signal that computing circuit 15 exports, phase-shift circuit 18 receive the reference pulse signal that pulse generating circuit 17 exports and to them
Phase shift processing is carried out, drive circuit 19 receives the reference pulse signal that pulse generating circuit 17 exports, and drive circuit 19 is according to base
Quasi- pulse signal is driven to the Q1 and Q2 of the first bridge arm of full-bridge circuit, and drive circuit 19 receives what phase-shift circuit 18 exported
Phase-shift pulse signal, drive circuit 19 are driven according to phase-shift pulse signal to the Q3 and Q4 of the second bridge arm of full-bridge circuit.
Reference picture 4 and Fig. 5, Fig. 4 are control signal Va and switching frequency f in full-bridge resonance DC/DC converter, moved
Phase angle Φ and output voltage Vout relation schematic diagram, it can be operated as follows：
Set threshold value a, threshold value b, threshold value c and threshold value d, threshold value a, threshold value b, threshold value c and threshold value d incremented by successively first,
When control signal Va is more than threshold value a and is less than threshold value b, frequency is controlled not to be changed into preset maximum value f=fmax, two
The phase shifting angle Φ of bridge arm gradually increases from zero changes to Φ 0, and corresponding output voltage Vout is also stepped up to V1 from zero, this
Process is independent phase shifting control pattern.
When control signal Va is more than or equal to threshold value b and is less than or equal to threshold value c, control frequency f and phase shifting angle Φ changes simultaneously,
The phase shifting angle of two bridge arms continues increase from Φ 0 and tapers to 180 °, and control frequency is tapered into f0 from fmax, accordingly
Output voltage Vout also further rise to V2 from V1, this process be VFC coordinate phase shifting control pattern.
When control signal Va is more than threshold value c and is less than threshold value d, phase shifting angle is not changed into Φ=180 °.Control frequency f from f0 by
Gradually it is reduced to preset minimum fmin, corresponding output voltage Vout and is also stepped up to V3 again from V2, this process is only
Vertical VFC pattern.
From said process as can be seen that big with the change of control signal, the output voltage of controlled resonant converter also gradually rises,
With diminishing for control signal, the output voltage of controlled resonant converter is gradually lowered, therefore can realize closed-loop control, reaches steady
Determine the purpose of output voltage or output current.
Full-bridge resonance DC/DC converter and its control method second embodiment：
Full-bridge resonance DC/DC converter in second embodiment includes output circuit and control module, wherein, output
Circuit can then use the output circuit in first embodiment, and control module then uses the MCU with operational capability, is stored with accordingly
The memory of software algorithm and the digital driver circuitry of cooperation, control module include adjustment control module, phase operation module,
Frequency calculation module, pulse generating module, phase shift block and drive module, adjustment control module receive preset signals and feedback letter
Number, adjustment control module draws control signal according to preset signals and feedback signal computing, and phase operation module receives regulation control
The control signal of device output processed, frequency calculation module receive the control signal of adjustment control device output, and pulse generating module receives
The frequency signal of frequency calculation module output, phase shift block receive the reference pulse signal of pulse generating module output, phase shift mould
The phase signal of block receiving phase computing module output, drive module receive the reference pulse signal of pulse generating module output,
Drive module is driven according to reference pulse signal to the first bridge arm of full-bridge modules, and drive module receives phase shift block output
Phase-shift pulse signal, drive module is driven according to phase-shift pulse signal to the second bridge arm of full-bridge modules.
The control method second embodiment of full-bridge resonance DC/DC converter can then perform above-mentioned control method in the same manner
The same steps of first embodiment, its Method And Principle are identicals.Second embodiment simply integrates control module with fortune
In control system or the control chip of calculating storage capacity, and first embodiment is to carry out each functional module using circuit module
Connect work.
Two-way full-bridge resonance DC/DC converter first embodiment：
Reference picture 6, Fig. 6 are the system block diagrams of two-way full-bridge resonance DC/DC converter.Two-way full-bridge resonance DC/
DC converter is complete including being sequentially connected the first filter circuit 31 connect, the first full-bridge circuit 32, resonant transform circuit 33, second
The filter circuit 35 of bridge circuit 34 and second, reference picture 7, Fig. 7 are the circuit diagrams of foregoing circuit, and the first filter circuit 31 includes electricity
Hold Cd1, the second filter circuit 35 includes electric capacity Cd2, and electric capacity Cd1 is connected between the first DC port Vd1 both positive and negative polarity, electricity
Hold Cd2 to be connected between the second DC port Vd2 both positive and negative polarity.
First bridge arm of the first full-bridge circuit 32 is made up of switching tube Q1 and switching tube Q2, switching tube Q1 source electrode and switch
Pipe Q2 drain electrode connection, the second bridge arm of the first full-bridge circuit 32 are made up of switching tube Q3 and switching tube Q4, switching tube Q3 source
Pole is connected with switching tube Q4 drain electrode, and switching tube Q1, switching tube Q2, switching tube Q3 and switching tube Q4 grid are single with control respectively
Member connection.
First bridge arm of the second full-bridge circuit is made up of switching tube Q5 and switching tube Q6, switching tube Q5 source electrode and switch
Pipe Q6 drain electrode connection, the second bridge arm of the second full-bridge circuit are made up of switching tube Q7 and switching tube Q8, switching tube Q7 source electrode
Drain electrode with switching tube Q8 is connected, switching tube Q5, switching tube Q6, switching tube Q7 and switching tube Q8 grid respectively with control unit
Connection.
Resonant transform circuit 33 uses LLC resonant transform circuits, and resonant transform circuit 33 includes resonant inductance Lr, resonance electricity
Hold Cr, energy storage inductor Lm1, capacitance Cg1, energy storage inductor Lm2 and capacitance Cg2；Resonant inductance Lr first end, storage
Energy inductance Lm1 first end electrically connects with switching tube Q1 source electrode, energy storage inductor Lm2 first end, the first of resonant capacitance Cr
End electrically connects with switching tube Q5 source electrode, and resonant inductance Lr the second end electrically connects with resonant capacitance Cr the second end, energy storage electricity
Sense Lm1 the second end electrically connects with capacitance Cg1 first end, and the of energy storage inductor Lm2 the second end and capacitance Cg2
One end electrically connects, capacitance Cg1 the second end, capacitance Cg2 the second end, switching tube Q3 drain electrode and switching tube Q7
Drain electrode electrical connection.
Converter also includes control unit, and control unit includes control module 41, control module 42 and controller 43, control
Molding block 41 and control module 42 can use the control unit 20 in above-described embodiment, by with storage capacity and data processing
The microcomputer of ability is controlled as controller 43 to control module 41 and control module 42, control module 41 and filter circuit 31
Electrically connect and gather the first DC port Vd1 circuit to obtain feedback signal, control module 42 electrically connects with filter circuit 32
And the second DC port Vd2 circuit is gathered to obtain feedback signal.The drive circuit of control module 41 enters to full-bridge circuit 32
Row driving, the drive circuit of control module 42 are driven to full-bridge circuit 34.
Control unit can also be integrated in control system or control core with computing storage capacity by certain the present embodiment
In piece, it is also that full-bridge circuit and converter etc. integrally can be controlled.
Two-way full-bridge resonance DC/DC converter second embodiment：
Reference picture 8, second embodiment are improved to resonant transform circuit 36, and specifically, resonant transform circuit includes humorous
Shake inductance Lr, resonant capacitance Cr, energy storage inductor Lm1, capacitance Cg1, winding T1, energy storage inductor Lm2 and capacitance Cg2,
Resonant inductance Lr first end, energy storage inductor Lm1 first end electrically connect with switching tube Q1 source electrode, and the first of resonant capacitance Cr
End electrically connects with winding T1 the first positive terminal, and resonant inductance Lr the second end electrically connects with resonant capacitance Cr the second end, storage
Energy inductance Lm1 the second end electrically connects with capacitance Cg1 first end, capacitance Cg1 the second end, the first of winding T1
Negative pole end and switching tube Q3 source electrode electrically connect, and capacitance Cg2 first end electrically connects with winding T1 the second positive terminal,
Capacitance Cg2 the second end electrically connects with switching tube Q5 source electrode, winding T1 the second negative pole end and switching tube Q7 drain electrode
Electrical connection, energy storage inductor Lm2 are connected between the first positive terminal and the first negative pole end.
Two-way full-bridge resonance DC/DC converter 3rd embodiment：
Reference picture 9,3rd embodiment are improved to resonant transform circuit 37, specifically, the energy storage inductor of upper embodiment
Lm1 can be integrated into as magnetizing inductance in isolating transformer T1 connected in parallel, therefore is no longer present in the electricity of 3rd embodiment
Lu Zhong.
The control method first embodiment of two-way full-bridge resonance DC/DC converter：
Based on the converter of above-mentioned one to three embodiment, and the control method of full-bridge resonance DC/DC converter, this pair
Converter is realized to the control unit of full-bridge resonance DC/DC converter and controlled, its control method includes：
When energy conversion direction is to flow to the second filter circuit from the first filter circuit, the first flow direction conversion step is performed
Suddenly, i.e., energy from the first DC port Vd1 flow to the second DC port Vd2 when；
First, which flows to shift step, includes：
Control module 41 receives the first preset signals and the first feedback signal, and the first feedback signal is using the second filtered electrical
Obtained by the operating current or voltage on road, the first preset signals are exported by controller；
Control module 41 draws the first control signal, control module 41 according to the first preset signals and feedback signal computing
The first rectification control signal is drawn according to the first preset signals computing；
Control module 41 generates the first reference pulse signal and the first phase-shift pulse signal, control according to the first control signal
Module 41 is driven to the first bridge arm of full-bridge circuit 32 according to the first reference pulse signal, and control module 41 is to full-bridge circuit
32 the second bridge arm is driven according to the first phase-shift pulse signal so that and full-bridge circuit 32 enters active switch pattern, according to
The regulation for needing switching frequency, phase or dutycycle as early as possible of energy transmission；
Control module 42 is driven according to the first rectification control signal to full-bridge circuit 34 so that full-bridge circuit 34 is opened
Close pipe and enter diode mode, its equivalent circuit such as Fig. 3 (a) rectification circuit, that is, having electric current to flow counterflow through switching tube just can quilt
Dynamic conducting.
When energy conversion direction is to flow to the first filter circuit from the second filter circuit, the second flow direction conversion step is performed
Suddenly, i.e., energy from the second DC port Vd2 flow to the first DC port Vd1 when；
Second, which flows to shift step, includes：
Control module 42 receives the second preset signals and the second feedback signal, and the second feedback signal is using the first filtered electrical
Obtained by the operating current or voltage on road, the first preset signals are exported by controller；
Control module 42 draws the second control signal, control module 42 according to the second preset signals and feedback signal computing
The second rectification control signal is drawn according to the second preset signals computing；
Control module 42 generates the second reference pulse signal and the second phase-shift pulse signal, control according to the second control signal
Module 42 is driven to the first bridge arm of full-bridge circuit 34 according to the second reference pulse signal, and control module 42 is to full-bridge circuit
34 the second bridge arm is driven according to the second phase-shift pulse signal；
Control module 41 is driven according to the second rectification control signal to full-bridge circuit 32 so that full-bridge circuit 32 is opened
Close pipe and enter diode mode, full bridge rectifier can be equivalent to, that is, having electric current to flow counterflow through switching tube just can passively turn on.
Two-way full-bridge resonance DC/DC converter fourth embodiment：
Reference picture 10, is improved based on 3rd embodiment, and substantially circuit structure is identical with 3rd embodiment, difference
It is, resonant transform circuit 38 is connected to energy storage inductor Lm1 without capacitance Cg1 using switch S1, switch S1
Between switching tube Q3 drain electrode, switch S1 can use the switch of electronic form or mechanical type, switch S1 reception control units
Break-make control.
The control method second embodiment of two-way full-bridge resonance DC/DC converter：
Based on the control method first embodiment of two-way full-bridge resonance DC/DC converter, second embodiment adds
For the rate-determining steps of switch, it is specially：
After control unit receives the first preset signals and the first feedback signal, first, which flows to shift step, also includes control
Unit processed is according to the first preset signals blocking swtich；
After control unit receives the second preset signals and the second feedback signal, second, which flows to shift step, also includes control
Unit processed is turned on according to the second preset signals and switched.
Under the working condition that energy transmits from filter circuit 31 to filter circuit 35, roof-cut resistence, by energy storage inductor from electricity
Depart from road, under the working condition that energy transmits from filter circuit 35 to filter circuit 31, closure switch, energy storage inductor is thrown
Enter into circuit, when so having still ensured that transmitted in both directions energy, converter is all LLC resonance circuit characteristics, is avoided simultaneously
Excess loss caused by energy storage inductor during forward direction work.
The two-way full-bridge resonance DC/embodiment of DC converter the 5th：
Reference picture 11 and Figure 12 are straight based on full-bridge resonance DC/DC converter first embodiment and two-way full-bridge resonance
In the same principle of stream/DC converter first embodiment, i.e. filter circuit 51, filter circuit 55, full-bridge circuit 52, full-bridge
Circuit 54 and resonant transform circuit, resonant transform circuit include resonant transformation network 53, control module 61, control module 62 and control
Device 63 processed.Wherein, filter circuit 51, filter circuit 55, full-bridge circuit 52, the structure of full-bridge circuit 54 and annexation and on
State the identical of embodiment.Mainly resonant transformation network 53 is described in detail for 5th embodiment.
Resonant transformation network 53 includes resonant inductance Lr, winding T1, resonant capacitance Crp, resonant capacitance Crs, switch module
S1 and switch module S2；Resonant capacitance Crp first end electrically connects with the source electrode of first switch pipe, and resonant inductance Lr is connected to humorous
Shake between electric capacity Crp the second end and winding T1 the first positive terminal, switch module S1 is connected to resonant capacitance Crp first end
And second between end, the source electrode electrical connection of winding T1 the first negative pole end and the 3rd switching tube；Resonant capacitance Crs is connected to winding
Between T1 the second positive terminal electricity and the source electrode of the 5th switching tube, switch module S2 is connected between resonant capacitance Crs both ends,
Winding T1 the second negative pole end electrically connects with the source electrode of the 7th switching tube.Resonant transformation network also includes energy storage inductor Lm, energy storage
Inductance Lm is connected between the first positive terminal and the first negative pole end.
Switch module S1 and switch module S2 can use relay, contactor, metal-oxide-semiconductor or IGBT pipes, switch module S1 to connect
The first switch control signal that admission controller 63 exports, switch module S2 receive the second switch control letter that controller 63 exports
Number, to realize the closure of switch module or blocking, then realize resonant capacitance Crp and resonant capacitance Crs short circuit and conducting.
The control method 3rd embodiment of two-way full-bridge resonance DC/DC converter：
Based on the converter of above-mentioned 5th embodiment, and the control method of full-bridge resonance DC/DC converter, this is two-way
The control unit of full-bridge resonance DC/DC converter realizes and controlled that its control method includes to converter：
When energy conversion direction is to flow to the second filter circuit from the first filter circuit, the first flow direction conversion step is performed
Suddenly, i.e., energy from the first DC port Vd1 flow to the second DC port Vd2 when；
The equivalent circuit diagram of reference picture 13, first, which flows to shift step, includes：
Switch module S1 receives the first switch control signal that controller 63 exports, and switch module S2 receives controller 63
The second switch control signal of output so that switch module S1 is off, and switch module S2 is in into closure state, i.e.,
Resonant capacitance Crp is turned on, and resonant capacitance Crs is short-circuited；
Control module 61 receives the first preset signals and the first feedback signal, and the first feedback signal is using the second filtered electrical
Obtained by the operating current or voltage on road, the first preset signals are exported by controller；
Control module 61 draws the first control signal, control module 61 according to the first preset signals and feedback signal computing
The first rectification control signal is drawn according to the first preset signals computing；
Control module 61 generates the first reference pulse signal and the first phase-shift pulse signal, control according to the first control signal
Module 61 is driven to the first bridge arm of full-bridge circuit 52 according to the first reference pulse signal, and control module 61 is to full-bridge circuit
52 the second bridge arm is driven according to the first phase-shift pulse signal so that and full-bridge circuit 52 enters active switch pattern, according to
The regulation for needing to carry out switching frequency, phase or dutycycle of energy transmission；
Control module 62 is driven according to the first rectification control signal to full-bridge circuit 54 so that full-bridge circuit 54 is opened
Close pipe and enter diode mode, its equivalent circuit such as Figure 13 rectification circuit, that is, having electric current to flow counterflow through switching tube just can be passive
Conducting.
When energy conversion direction is to flow to the first filter circuit from the second filter circuit, the second flow direction conversion step is performed
Suddenly, i.e., energy from the second DC port Vd2 flow to the first DC port Vd1 when.
, it is necessary to be illustrated to equivalent transformation before explanation second flows to shift step, Figure 14, resonant inductance refer to
Lr and energy storage inductor Lm connects and is connected in parallel on respectively isolating transformer primary side side, as shown in figure 14, according to circuit theory, resonance electricity
Sense and energy storage inductor can also distinguish the equivalent secondary to isolating transformer, as shown in figure 14.The equivalent pass of device of two circuits
System is as follows：
That is, resonant inductance Lr and energy storage inductor Lm can be with equivalent transformation to transformer secondary in Figure 12 circuit
Side, two inductance are a kind of symmetrical structure forms relative to transformer primary side and secondary, are further analyzed, though resonant capacitance
Transformer secondary side so can also be arrived according to transformer voltage ratio is equivalent, but its Equivalent Physical position be located at transformer secondary side with etc.
The centre of energy storage inductor is imitated, and the circuit form connected with equivalent tank inductance can not be formed, also cannot be in transformer secondary
Side formed standard LLC resonant circuit forms (resonant inductance is connected with resonant capacitance, energy storage inductor directly with Transformer Winding simultaneously
Connection).
, will be former after output commutation diode replaces with switching tube in traditional LLC isolation resonance circuit by above-mentioned analysis
Side full-bridge circuit and inherently a kind of symmetrical structure of secondary full-bridge circuit, resonant inductance, energy storage inductor and isolating transformer,
Circuit characteristic is consistent during energy in bidirectional flow, influences only one element of resonant capacitance of energy in bidirectional flow characteristic.This
Utility model is connected a resonant capacitance respectively in transformer primary avris and secondary side, the direction transmitted according to energy, with one
The one of resonant capacitance of gate-controlled switch short circuit, so as in the positive transmission of energy or reverse transfer, all make circuit maintain biography
The advantage of system LLC resonant transformations.
Second, which flows to shift step, includes：
Switch module S1 receives the first switch control signal that controller 63 exports, and switch module S2 receives controller 63
The second switch control signal of output so that switch module S1 is in closure state, switch module S2 is off, i.e.,
Resonant capacitance Crp is short-circuited, resonant capacitance Crs conductings.Then equivalent circuit is as shown in figure 15, equivalent tank inductance Lr ', secondary
Resonant capacitance Crs and equivalent energy storage inductor Lm ' composition LLC resonant transformation networks, its decision are straight to first by the second DC port
The circuit transmission characteristic of flow port.
Control module 62 receives the second preset signals and the second feedback signal, and the second feedback signal is using the first filtered electrical
Obtained by the operating current on road, the first preset signals are exported by controller；
Control module 62 draws the second control signal, control module 62 according to the second preset signals and feedback signal computing
The second rectification control signal is drawn according to the second preset signals computing；
Control module 62 generates the second reference pulse signal and the second phase-shift pulse signal, control according to the second control signal
Module 62 is driven to the first bridge arm of full-bridge circuit 54 according to the second reference pulse signal, and control module 62 is to full-bridge circuit
54 the second bridge arm is driven according to the second phase-shift pulse signal；
Control module 61 is driven according to the second rectification control signal to full-bridge circuit 52 so that full-bridge circuit 52 is opened
Close pipe and enter diode mode, full bridge rectifier can be equivalent to, that is, having electric current to flow counterflow through switching tube just can passively turn on.
Two-way full-bridge resonance DC/DC converter sixth embodiment：
Reference picture 16, sixth embodiment are that the 5th embodiment based on converter is improved to resonant transformation network 73,
Specifically, the energy storage inductor Lm in the 5th embodiment can be integrated into isolating transformer T1 connected in parallel as magnetizing inductance
In, therefore be no longer present in the circuit of sixth embodiment.
The two-way full-bridge resonance DC/embodiment of DC converter the 7th：
Reference picture 17, the 7th embodiment are that the 5th embodiment based on converter is improved to resonant transformation network 73,
Analyzed according to Figure 12 circuit equivalent, resonant inductance and energy storage inductor are by transformer primary side equivalent transformation to transformer secondary
When, cause certain fluctuation of transformer voltage ratio, equivalent tank inductance and equivalent energy storage inductor parameter.So, this practicality is new
Circuit described in type is during the positive transmission of energy or reverse transfer, although can be protected by switching resonant capacitance on circuit
The LLC resonance forms for standard are held, but resonant parameter during forward and reverse work still has certain difference.If ensure positive and negative
Also keep basically identical to resonant parameter during work, the solution of the present embodiment is to set resonant inductance Lrp and resonance electricity
Feel Lrs, resonant inductance Lrp is connected between resonant capacitance Crp and transformer primary side positive terminal, and resonant inductance Lrs is connected on humorous
Shake between electric capacity Crs and transformer secondary positive terminal.
Above-mentioned converter sixth embodiment and the 7th embodiment are improved mainly for resonant transformation network, therefore converter
Sixth embodiment and the 7th embodiment are applied to the control method of control method 3rd embodiment, are also that by this practicality
New purpose.It is further to note that two-way resonance translation circuit includes the first filter circuit, the first full-bridge circuit, resonance
Converting network, the second full-bridge circuit and the second filter circuit and control unit, and resonant transformation network mainly include resonant inductance,
The devices such as winding, resonant capacitance, switch module and energy storage inductor, its relation apply to above-described embodiment.
The utility model is described by above example, and those skilled in the art knows, is not departing from this reality
In the case of new spirit and scope, equivalence replacement or change can be carried out to these features.Therefore, the utility model not by
The limitation of embodiment disclosed above, it is new that the embodiment fallen with the range of the utility model claims belongs to this practicality
The scope of type protection.
Claims (9)
- A kind of 1. two-way resonance translation circuit, it is characterised in that：Including being sequentially connected the first filter circuit connect, the first full-bridge electricity Road, resonant transformation network, the second full-bridge circuit and the second filter circuit；The resonant transformation network includes the first resonant inductance, winding, the first resonant capacitance, the second resonant capacitance, first switch Module and second switch module；The first end of first resonant capacitance electrically connects with the first bridge arm of first full-bridge circuit, the first resonance electricity Sense is connected between the second end of first resonant capacitance and the first positive terminal of the winding, and the first switch module connects It is connected between first end and the second end of first resonant capacitance, the first negative pole end of the winding and first full-bridge electricity The second bridge arm electrical connection on road；Second resonant capacitance be connected to the winding the second positive terminal and second full-bridge circuit the first bridge arm it Between, the second switch module is connected between the both ends of second resonant capacitance, the second negative pole end of the winding and institute State the second bridge arm electrical connection of the second full-bridge circuit.
- 2. translation circuit according to claim 1, it is characterised in that：Blocking state is in the first switch module, the second switch module is under closure state, and the resonance becomes The equivalent circuit of switching network is：The first end of first resonant capacitance electrically connects with the first bridge arm of first full-bridge circuit, the first resonance electricity Sense is connected between the second end of first resonant capacitance and the first positive terminal of the winding, the first negative pole of the winding Second bridge arm of end and first full-bridge circuit electrically connects；Second positive terminal of the winding electrically connects with the first bridge arm of second full-bridge circuit, the second negative pole of the winding End electrically connects with the second bridge arm of second full-bridge circuit.
- 3. translation circuit according to claim 1, it is characterised in that：Closure state is in the first switch module, the second switch module is under blocking state, and the resonance becomes The equivalent circuit of switching network is：First positive terminal of the winding electrically connects with the first bridge arm of first full-bridge circuit, the first negative pole of the winding End electrically connects with the second bridge arm of first full-bridge circuit；The first end of second resonant capacitance electrically connects with the first bridge arm of second full-bridge circuit, the first resonance electricity The equivalent tank inductance connection of sense is described between the second end of second resonant capacitance and the second positive terminal of the winding Second bridge arm of the second negative pole end of winding and second full-bridge circuit electrically connects.
- A kind of 4. two-way full-bridge resonance DC/DC converter, it is characterised in that：Including being sequentially connected the first filtered electrical connect Road, the first full-bridge circuit, resonant transform circuit, the second full-bridge circuit and the second filter circuit；The resonant transform circuit also includes control unit and resonance converting network, and described control unit is filtered with described first respectively Wave circuit, second filter circuit electrical connection；First bridge arm of first full-bridge circuit is made up of first switch pipe and second switch pipe, the source of the first switch pipe Pole is connected with the drain electrode of the second switch pipe, and the second bridge arm of first full-bridge circuit is switched by the 3rd switching tube and the 4th Pipe is formed, and the source electrode of the 3rd switching tube is connected with the drain electrode of the 4th switching tube, the first switch pipe, described second The grid of switching tube, the 3rd switching tube and the 4th switching tube is connected with described control unit respectively；First bridge arm of second full-bridge circuit is made up of the 5th switching tube and the 6th switching tube, the source of the 5th switching tube Pole is connected with the drain electrode of the 6th switching tube, and the second bridge arm of second full-bridge circuit is switched by the 7th switching tube and the 8th Pipe is formed, and the source electrode of the 7th switching tube is connected with the drain electrode of the 8th switching tube, the 5th switching tube, the described 6th The grid of switching tube, the 7th switching tube and the 8th switching tube is connected with described control unit respectively；The resonant transformation network includes the first resonant inductance, winding, the first resonant capacitance, the second resonant capacitance, first switch Module and second switch module；The first end of first resonant capacitance electrically connects with the source electrode of the first switch pipe, the first resonant inductance connection Between the second end of first resonant capacitance and the first positive terminal of the winding, the first switch module is connected to institute State between the first end of the first resonant capacitance and the second end, the source electrode of the first negative pole end of the winding and the 3rd switching tube Electrical connection；Second resonant capacitance is connected between the second positive terminal of the winding and the source electrode of the 5th switching tube, described Second switch module is connected between the both ends of second resonant capacitance, and the second negative pole end of the winding is opened with the described 7th Close the source electrode electrical connection of pipe.
- 5. converter according to claim 4, it is characterised in that：The resonant transformation network also includes energy storage inductor, and the energy storage inductor is connected to first positive terminal and described first Between negative pole end.
- 6. converter according to claim 4, it is characterised in that：The resonant transformation network also includes the second resonant inductance, and second resonant inductance is connected in series in second resonance Between electric capacity and the second positive terminal of the winding.
- 7. converter according to claim 4, it is characterised in that：The first switch module can use relay, contactor, metal-oxide-semiconductor or IGBT pipes；The first switch module receives the first switch control signal of described control unit output.
- 8. converter according to claim 4, it is characterised in that：The second switch module can use relay, contactor, metal-oxide-semiconductor or IGBT pipes；The second switch module receives the second switch control signal of described control unit output.
- 9. according to the converter described in any one of claim 4 to 8, it is characterised in that：Described control unit includes control module and controller, and the control module includes：Adjustment control device, the adjustment control device receive feedback signal and the preset signals of controller output, the feedback Signal is using the operating current or voltage of first filter circuit or second filter circuit gained, the adjustment control Device draws control signal according to the preset signals and the feedback signal computing；Phase operation circuit, the phase operation circuit receive the control signal of the adjustment control device output；Frequency calculation circuit, the frequency calculation circuit receive the control signal of the adjustment control device output；Pulse generating circuit, the pulse generating circuit receive the frequency signal of the frequency calculation circuit output；Phase-shift circuit, the phase-shift circuit receive the reference pulse signal of the pulse generating circuit output, the phase-shift circuit Receive the phase signal of the phase operation circuit output；Drive circuit, the drive circuit receive the reference pulse signal of the pulse generating circuit output, the driving Circuit according to the reference pulse signal to the first bridge arm of first full-bridge circuit or second full-bridge circuit first Bridge arm is driven, and the drive circuit receives the phase-shift pulse signal of the phase-shift circuit output, the drive circuit according to The phase-shift pulse signal is carried out to the second bridge arm of first full-bridge circuit or the second bridge arm of second full-bridge circuit Driving.
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| CN201720357673.1U CN206807298U (en) | 2017-04-06 | 2017-04-06 | A kind of two-way resonance translation circuit and converter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736734A (en) * | 2018-07-10 | 2018-11-02 | 珠海英搏尔电气股份有限公司 | A kind of controlled resonant converter |
| CN109361321A (en) * | 2018-11-29 | 2019-02-19 | 西安交通大学 | A kind of LLC resonant converter reverse operation circuit and design method |
| CN111277145A (en) * | 2020-03-03 | 2020-06-12 | 合肥阳光电动力科技有限公司 | Control device and control method of DC-DC conversion circuit |
| CN111355381A (en) * | 2020-03-31 | 2020-06-30 | 惠州拓邦电气技术有限公司 | Bidirectional bridge type resonant converter |
| CN111641339A (en) * | 2020-05-19 | 2020-09-08 | 河海大学 | Bidirectional CLLLC resonant converter with variable capacitor and control method |
| CN113271018A (en) * | 2021-06-28 | 2021-08-17 | 上海电气集团股份有限公司 | Bidirectional isolation type three-phase direct current converter with bypass circuit |
| EP4395145A1 (en) * | 2022-12-30 | 2024-07-03 | Sungrow Power Supply Co., Ltd. | Method for switching between forward operation and reverse operation of isolated bidirectional dc-dc circuit, controller, bidirectional converter, and charging system |
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2017
- 2017-04-06 CN CN201720357673.1U patent/CN206807298U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736734A (en) * | 2018-07-10 | 2018-11-02 | 珠海英搏尔电气股份有限公司 | A kind of controlled resonant converter |
| CN108736734B (en) * | 2018-07-10 | 2023-10-13 | 珠海英搏尔电气股份有限公司 | Resonant converter |
| CN109361321A (en) * | 2018-11-29 | 2019-02-19 | 西安交通大学 | A kind of LLC resonant converter reverse operation circuit and design method |
| CN109361321B (en) * | 2018-11-29 | 2019-10-11 | 西安交通大学 | A kind of LLC resonant converter reverse operation circuit and design method |
| CN111277145A (en) * | 2020-03-03 | 2020-06-12 | 合肥阳光电动力科技有限公司 | Control device and control method of DC-DC conversion circuit |
| CN111277145B (en) * | 2020-03-03 | 2021-10-29 | 合肥阳光电动力科技有限公司 | Control device and control method of DC-DC conversion circuit |
| CN111355381A (en) * | 2020-03-31 | 2020-06-30 | 惠州拓邦电气技术有限公司 | Bidirectional bridge type resonant converter |
| CN111641339A (en) * | 2020-05-19 | 2020-09-08 | 河海大学 | Bidirectional CLLLC resonant converter with variable capacitor and control method |
| CN113271018A (en) * | 2021-06-28 | 2021-08-17 | 上海电气集团股份有限公司 | Bidirectional isolation type three-phase direct current converter with bypass circuit |
| CN113271018B (en) * | 2021-06-28 | 2022-03-01 | 上海电气集团股份有限公司 | Bidirectional isolation type three-phase direct current converter with bypass circuit |
| EP4395145A1 (en) * | 2022-12-30 | 2024-07-03 | Sungrow Power Supply Co., Ltd. | Method for switching between forward operation and reverse operation of isolated bidirectional dc-dc circuit, controller, bidirectional converter, and charging system |
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