CN105811778B - A kind of reversible transducer - Google Patents
A kind of reversible transducer Download PDFInfo
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- CN105811778B CN105811778B CN201610251403.2A CN201610251403A CN105811778B CN 105811778 B CN105811778 B CN 105811778B CN 201610251403 A CN201610251403 A CN 201610251403A CN 105811778 B CN105811778 B CN 105811778B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
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- Dc-Dc Converters (AREA)
Abstract
A kind of reversible transducer, including the first side Vs, the second side Vo, transformer B, power tube Q1, Q2, diode D1, D2, D3, D4, capacitance C1, C2, resistance R1, R2 and voltage-stabiliser tube W1, W2, power tube Q1 connect with after D1 parallel connections with primary side, voltage-stabiliser tube W1 is in parallel with C1 after connecting with R1, absorbs primary side leakage inductance；Power tube Q2 connects with after D2 parallel connections with secondary side, and voltage-stabiliser tube W2 is in parallel with C2 after connecting with R2, absorbs secondary leakage inductance, and ensure：The voltage stabilizing value of W1 is more than primary side winding Np induced voltages, refers in particular to：The second side Q2 saturation conductions and it is excitatory to Ns when, the induced voltages of Np at this time；The voltage stabilizing value of similary voltage-stabiliser tube W2 is more than vice-side winding Ns induced voltages, this circuit overcomes existing reversible transducer when excitatory, and the RCD absorbing circuits of opposite side consume electric energy by normal shock, has the characteristics of circuit is simple, low in energy consumption.
Description
Technical field
The present invention relates to the DC-DC converters of DC-DC converter, more particularly to energy two-way flow.
Background technology
In a broad sense, it is all by the use of semiconductor power device as switch, a kind of power source shapes are changed into another form
Main circuit is all called Switching Converter Topologies, abbreviation converter.The chief component of Switching Power Supply is DC-DC converter.
The energy of most converter is one-way flow, such as phone charger, mostly flyback converter, the energy of alternating current
Amount rectification is direct current, then is transformed to the low pressure of usually 5V to mobile phone power supply or charges.Certain energy conversion occasions, it is desirable to energy
The energy conversion of alternating current can be low pressure by converter with two-way flow, such as energy-storage system, when mains-supplied is abundant, storage
It deposits in the battery, when mains-supplied deficiency, converter is alternating current the energy conversion of battery, supplements the electricity shortage of alternating current.
The it is proposed of reversible transducer follows the function of AC transformer derived from the mankind, and AC transformer is a kind of two-way
Alternating voltage isolator, it can realize the two-way flow of energy, but it can not directly be transmitted direct current (DC).
What Electronic Industry Press published《The principle and design of Switching Power Supply》The Fig. 3-14 of page 71 shows a kind of two-way
Converter, the book ISBN are 7-121-00211-6, hereinafter referred to as background document 1.Downward 5th row of the same page figure also illustrates：
Note that when current work is in discontinuous mode form, Switching Two tropism can not be achieved.For convenience, the application handle
Fig. 3-14 of the book is presented in this application, referring to Fig. 1.Substantially bilateral is docked for push-pull converter, forms two-way changing
Device.Due to the deficiency described in the book, the reversible transducer of the archetype grade shown in Fig. 1, there is no actually use.
The reversible transducer of Fig. 1 from the principle, can be achieved on real two-way changing, as long as i.e. switching signal
It adds up, the balance of voltage between Vs and Vo is automatic, is not have to adjustment switching signal.
Fig. 3-15 of the book same page shows the Cuk converters of energy in bidirectional flow, for convenience, Fig. 3-15 of the book
It presents in this application, referring to Fig. 2, and has modified the mistake in artwork, correct or change is：Triode T1Emitter and electricity
The anode of source V is connected, and number R is increased to load resistanceL, number C is increased to unique capacitance.In Fig. 2, load resistance RL
If it is changed to another power supply, it is possible to realize reversible transducer, but can not achieve isolation, have many uses at present, for series connection
In battery pack or super capacitor group, adjacent unit is balanced, has efficient, controls the advantages of simple, but when in battery pack
When non-adjacent battery needs balanced, energy transmits step by step reduces overall efficiency, and any battery cell voltage is under-voltage or super
It is fully open during pressure, it could realize equilibrium, whole efficiency is not high.
Flyback converter has the characteristics of device is few, and reliability is high.It is entitled application No. is 201310558811.9《Electric power storage
The two-way non-dissipative equalizing of pond group and pulse activated system》Patent application, hereinafter referred to as background document 2 shown and become using flyback
The reversible transducer of parallel operation composition, by main switch Q5, flyback rectifying tube Q6 and flyback transformer T3, detection resistance R3 and
R4 is formed, it is well known that circuit of the background document 2 due to being not provided with processing flyback converter transformer leakage inductance, is to be unable to work
Make, be ISBN978-7-5083-9015-4's referring to the written book number of doctor Zhang Xingzhu《Switching Power Supply power converter topologies
With design》The discussion of last 2 row of page 61 to page 62.
It is entitled application No. is 201410724447.3《Two-way lossless active equalization device》Patent application, hereinafter referred to as
Background document 3 shows that the reversible transducer formed using flyback converter just overcomes the deficiency of background document 2, for side
Just, the application is presented Fig. 1 of background document 3 in this application, referring to Fig. 3 of the application.It can be seen that monomer side is set up
The RCD absorbing circuits that are made of diode D1, resistance R1, capacitance C2, total side set up by diode D4, resistance R3,
The RCD absorbing circuits of capacitance C4 compositions for marking the Same Name of Ends stain of transformer B1 smaller in Fig. 3, are hoped and are paid attention to.RCD absorbs
The operation principle of circuit is known technology, be can refer to above-mentioned《Switching Power Supply power converter topologies and design》Page 67
" 4.3RCD absorbs flyback converter " section.
The deficiency analysis of background document 3：
For being worked by monomer side, when power tube Q1 is in PWM on off states, that is, when working normally, Q1 saturation conductions
Afterwards, the flow direction of excitation current is：The Same Name of Ends of monomer side+→ SW1 → transformer B1, upper end → transformer of B1 in Fig. 3
The different name end of B1, lower end → diode D3 → Q1 collectors → Q1 emitters → current sense resistor R2 → monomer of B1 in Fig. 3
Side-, a circuit is formed, at this point, the secondary of transformer B1 induces negative, lower positive induced voltage, this moment, D5 is in anti-
It is not turned on partially；
When Q1 switchs to cut-off by being connected, the excitation current in transformer B1 cannot disappear, and former flow direction is：Primary side it is same
Name end flows to different name end, and transformer B1 is run as energy storage inductor, which appears in secondary, and flow direction is still Same Name of Ends
Different name end is flowed to, electric current from bottom to top occurs in the secondary of B1, and at this moment D5 is in forward conduction state, and energy is transferred to from primary side
Secondary charges to total side, completes transformation；
At this point, since transformer B1 is there are leakage inductance, the energy of leakage inductance storage is inhaled by the RCD that D1, R1, C2 of monomer side are formed
Circuit is received to be absorbed；
The deficiency of background document 3：When Q1 saturation conductions, the secondary of transformer B1 induces negative, lower positive induced electricity
Pressure, this voltage are connected by diode D4, and the RCD circuit absorbing circuits of secondary take part in work, and R3 consumes energy.Secondary
RCD circuits are intended that for absorbing the energy that leakage inductance stores when Q2 is on off state.
Equally, when total side works, during Q2 saturation conductions, the primary side of transformer B1 induces negative, lower positive sensing
Voltage, diode D1 conductings, the RCD circuit absorbing circuits of primary side take part in work, and R1 consumes energy.
The power tube that RCD circuits absorbing circuit was only operated in flyback converter originally becomes the wink ended from saturation conduction
Between, and in background document 3, when primary side is excitatory, the RCD absorbing circuits of secondary have been participated in the overall process work, the energy ratio of consumption
It is larger, it can not realize " lossless " absorption described in background document 3.
The reversible transducer formed using flyback converter, i.e. inverse-excitation type reversible transducer, at present still in imagining the stage,
Really can expeditiously realize two-way non-loss transformation occurs not yet.
For convenience, list this application involves document：
Background document 1：《The principle and design of Switching Power Supply》, ISBN 7-121-00211-6；
Background document 2：《The two-way non-dissipative equalizing of accumulator group and pulse activated system》, application number 201310558811.9；
Background document 3：《Two-way lossless active equalization device》, application number 201410724447.3；
Bibliography：《Switching Power Supply power converter topologies and design》, ISBN 978-7-5083-9015-4.
Invention content
In view of this, the invention solves existing inverse-excitation type reversible transducer present in deficiency, a kind of two-way change is provided
Parallel operation expeditiously realizes two-way changing.
The object of the present invention is achieved like this, a kind of reversible transducer, including the first side, the second side, a transformer,
First power tube, the second power tube, the first diode, the second diode, third diode, the 4th diode, the first capacitance,
Two capacitances, first resistor, second resistance and the first zener diode, the second zener diode, transformer, which includes at least, to be had clearly
The primary side winding and vice-side winding, connection relation of clear Same Name of Ends mark be：The sun of the source electrode of first power tube and the first diode
Pole connects, and the input for forming the first side is born, and the drain electrode of the first power tube is connect with the cathode of the first diode, and tie point also connects
Connect the different name end of the primary side winding of transformer, tie point also connects the anode of third diode simultaneously, the first zener diode with
It is in parallel with the first capacitance after first resistor series connection, the Same Name of Ends of the primary side winding of the anode connection transformer after parallel connection, and formed
Just, the cathode after parallel connection connects the cathode of third diode for the input of first side；The source electrode of second power tube and the second diode
Anode connection, and the input for forming the second side is born, and the drain electrode of the second power tube is connect with the cathode of the second diode, tie point
The Same Name of Ends of the vice-side winding of transformer is also connected with, tie point also connects the anode of the 4th diode, two pole of the second voltage stabilizing simultaneously
Pipe is in parallel with the second capacitance after connecting with second resistance, the different name end of the vice-side winding of the anode connection transformer after parallel connection, and
Just, the cathode after parallel connection connects the cathode of the 4th diode for the input of formation the second side；
It is characterized in that：The voltage stabilizing value of first zener diode is more than primary side winding induced voltage, primary side winding induced voltage
It refers in particular to：In the second power tube saturation conduction of the second side, and it is excitatory to vice-side winding when, the induced electricity of primary side winding at this time
Pressure；The voltage stabilizing value of second zener diode is more than vice-side winding induced voltage, and vice-side winding induced voltage refers in particular to：In the first side
During the first power tube saturation conduction, and it is excitatory to primary side winding when, the induced voltage of vice-side winding at this time；
Preferably, when the second diode forward is connected, the second power tube in parallel synchronizes conducting therewith；
Preferably, when the first diode forward is connected, the first power tube in parallel synchronizes conducting therewith.
As the equivalent replacement of said program, the first zener diode and/or the second zener diode are replaced with other
The both ends sub-network with zener diode external characteristics of device composition, the both ends sub-network include two ends of anode and cathode
Son；
Preferably, both ends sub-network includes zener diode and triode, the transmitting extremely two-terminal network of triode
Anode, the collector of triode form the cathode of both ends sub-network, the base stage of triode after being connected with the cathode of zener diode
It is connected with the anode of zener diode；
Preferably, both ends sub-network is TVS pipe；
Preferably, both ends sub-network is light emitting diode；
Preferably, both ends sub-network is the peripheral resistance composition of the quasi- integrated regulator TL431 cooperations of three end groups.
Above-mentioned relational language is explained as follows：
With zener diode external characteristics：There is one-way conduction performance and voltage stabilizing function.
Both ends sub-network：Refer to one or interconnect circuit knot of the tool formed there are two terminal by two and above component
Structure.
Anode, the cathode of both ends sub-network：Suitable for having the both ends sub-network of unilateal conduction performance, anode voltage is than cloudy
When high, electric current can be generated；When cathode voltage is higher than anode, it is impossible to generate electric current.
The detailed operation principle of the present invention connected applications can be described in detail in embodiment, a kind of two-way changing of the invention
Device has the beneficial effect that：
(1) when primary side is excitatory, the RCD absorbing circuits of secondary are not involved in work；
(2) when secondary is excitatory, the RCD absorbing circuits of primary side are not involved in work；
(3) for these reasons, the energy of consumption is very small, realizes " lossless " absorb；
(4) isolated two-way transformation is realized in higher efficiency.
Description of the drawings
Fig. 1 is a kind of reversible transducer shown in the Fig. 3-14 of page 71 of background document 1；
Fig. 2 is a kind of reversible transducer shown in the Fig. 3-15 of page 71 of background document 1；
Fig. 3 is the two-way lossless active equalization device shown in background document 3；
Fig. 4 is a kind of schematic diagram of reversible transducer of first embodiment of the invention；
Fig. 5 is the both ends sub-network anode and cathode schematic diagram that leakage inductance absorbing circuit is formed in Fig. 4；
Fig. 6 is the isoboles of Fig. 5, by resistance and the location swap of zener diode；
Fig. 7 is the two-terminal network diagram that the transformer leakage inductance absorbing circuit of second embodiment of the invention is formed.
Specific embodiment
First embodiment
Fig. 4 is referred to, is first embodiment of the invention, is a kind of reversible transducer, including the first side Vs, the second side Vo,
One transformer B, the first power tube Q1, the second power tube Q2, the first diode D1, the second diode D2, third diode D3,
4th diode D4, the first capacitance C1, the second capacitance C2, first resistor R1, second resistance R2 and the first zener diode
W1, the second zener diode W2, transformer include at least the primary side winding Np and vice-side winding Ns for having clear Same Name of Ends mark, figure
In 4 transformer B, Same Name of Ends is represented with stain, it is well known that if being collectively expressed as different name end, circuit remains to work normally.
The connection relation of Fig. 4 circuits is：The source S of first power tube Q1 is connect, and shape with the anode of the first diode D1
Input into the first side Vs is born, and is represented in figure with the "-" number of first side Vs this sides, the drain D and the one or two of the first power tube Q1
The cathode connection of pole pipe D1, tie point are also connected with the different name end of the primary side winding Np of transformer B, and tie point also connects third simultaneously
The anode of diode D3, i.e. the first diode D1 are in parallel with the first power tube Q1.The electricity of first zener diode W1 and first
The Same Name of Ends of the primary side winding Np of anode connection transformer B in parallel with the first capacitance C1 after R1 connects, after parallel connection is hindered, and is formed
The input of first side Vs just, represents that the cathode after parallel connection connects third diode D3's with the "+" number of first side Vs this sides in figure
Cathode；
The source S of second power tube Q2 is connect with the anode of the second diode D2, and the input for forming the second side is born, in figure
It is represented with the "-" number of this side of the second side Vo, the drain D of the second power tube Q2 is connect with the cathode of the second diode D2, tie point
It is also connected with the Same Name of Ends of the vice-side winding Ns of transformer B, tie point also connects the anode of the 4th diode D4 simultaneously, i.e., and the 2nd 2
Pole pipe D2 is in parallel with the second power tube Q2.Second zener diode W2 connect with second resistance R2 after with the second capacitance C2 simultaneously
Connection, the different name end of the vice-side winding Ns of the anode connection transformer B after parallel connection, and the input for forming the second side Vo is just, is used in figure
The "+" number of this side of the second side Vo represents that the cathode after parallel connection connects the cathode of the 4th diode D4；
This circuit is to normal work, then to ensure：The voltage stabilizing value of first zener diode W1 is more than primary side winding Np
Induced voltage, primary side winding Np induced voltages refer in particular to：In the second power tube Q2 saturation conductions of the second side Vo, and to secondary around
When group Ns is excitatory, the induced voltages of primary side winding Np at this time, this electromagnetic induction is the induced voltage under normal shock state；Second is steady
The voltage stabilizing value of diode W2 is pressed to be more than vice-side winding Ns induced voltages, vice-side winding Ns induced voltages refer in particular to：The first side Vs's
During the first power tube Q1 saturation conductions, and it is excitatory to primary side winding Np when, the induced voltages of vice-side winding Ns at this time, this sensing
The induced voltage being similarly under normal shock；
Illustratively：First zener diode W1 is in parallel with the first capacitance C1 after connecting with first resistor R1, connection mode
See Fig. 5 and Fig. 6, be still finally both ends sub-network.In Figure 5, if the polarity of the first zener diode W1 in turn, i.e. cathode
With anode exchange, it can be seen that the connection relation of this mode isoboles 6, only the polarity up and down of both ends sub-network to exchange.
This connection mode of Fig. 6 can simply regard the differentiation of this modes of Fig. 5 as：The first zener diode W1 and first
Resistance R1 transpositions are connected again.It is well known that in series circuit, in the case of ensureing that polarity is constant, device is mutual associated with string
Change place is not influence performance, i.e., the circuit of the circuit of Fig. 5 and Fig. 6 are equal effect exchanges.
For voltage-stabiliser tube all there are internal resistance, the resistance R1 of series connection can also be considered as the internal resistance of voltage-stabiliser tube, then, two pole of the first voltage stabilizing
Both ends sub-network after pipe W1 is in parallel with the first capacitance C1 after connecting with first resistor R1, for DC current, still has
The feature of diode：Unilateal conduction.At this moment, we are still " anode " the upper end in Fig. 5 and Fig. 6, are cried " after in parallel to distinguish
Anode ", equally, " cathode " is still the lower end in Fig. 5 and Fig. 6, cried to distinguish " cathode after in parallel ".
Operation principle：By taking the first side Vs work as an example, when power tube Q1 is in PWM on off states, that is, when working normally,
After power tube Q1 saturation conductions, the flow direction of excitation current is：The Same Name of Ends of first side Vs+ → transformer B becomes in i.e. Fig. 4
The different name end of the upper end of the primary side winding Np of depressor B → transformer B, lower end → the first of the primary side winding Np of transformer B in Fig. 4
The side Vs- of the source S of the power tube Q1 of the drain D of power tube Q1 → first → first, forms a circuit, at this point, utilizing Same Name of Ends
Relationship it is found that the vice-side winding Ns of transformer B induces negative, lower positive induced voltage, referred to as " vice-side winding Ns induced electricities
Pressure ", this moment, the second diode D2 are in reverse-biased and are not turned on.
Since the voltage stabilizing value of the second zener diode W2 is more than vice-side winding Ns induced voltages, this moment, vice-side winding Ns senses
Voltage is answered to charge by diode D4 to capacitance C2, there is no other accesses, this is a cycle, in the later period, by
In charged on capacitance C2, charging current is not re-formed, therefore in the period afterwards, when power tube Q1 saturation conductions again
And when excitatory to the primary side winding Np of transformer B, vice-side winding Ns induced voltages are in light condition, and there is no energy losses.
I.e. in the present invention, in former RCD absorbing circuits, add in after zener diode W2, and make the voltage stabilizing value of zener diode W2 big
In vice-side winding Ns induced voltages, it is possible to realize that the RCDW circuits of secondary do not reabsorb energy.
When power tube Q1 switchs to cut-off by being connected, the excitation current of primary side winding Np cannot disappear in transformer B, original flowing
Direction is：The Same Name of Ends of primary side winding Np flows to different name end, i.e., from top to bottom, transformer B is run as energy storage inductor, the electric current
Appear in vice-side winding Ns, flow direction is still that Same Name of Ends flows to different name end, the vice-side winding Ns of transformer B occur from it is lower to
On electric current, at this moment the second diode D2 be in forward conduction state, energy is transferred to secondary from primary side, is filled to the second side Vo
Electricity completes transformation；
When power tube Q1 switchs to cut-off by being connected, at this point, since transformer B is there are leakage inductance, the energy of leakage inductance storage is by the
The RCDW absorbing circuits of D3, R1, C1 and W1 composition of side Vs are absorbed, and are only absorbed voltage and are slightly increased, but circuit is still
It can work normally.
During the second diode D2 forward conductions, the second power tube Q2 in parallel synchronizes conducting therewith, you can realizes the second work(
The synchronous rectification of rate pipe Q2, further improves conversion efficiency.
The operation principle for the first side Vs work, energy are transferred to the second side Vo from the first side Vs by transformation above.
From fig. 4, it can be seen that the both sides of circuit have the symmetry of height, although the operating voltage of both sides may be different,
But operation principle is the same, and operation principle when the second side Vo works, i.e. energy are transferred to the from the second side Vo by transformation
Side Vs, as long as ensureing that the voltage stabilizing value of the first zener diode W1 is more than primary side winding Np induced voltages, you can realize invention mesh
, primary side winding Np induced voltages refer in particular to：It is in the second power tube Q2 saturation conductions of the second side Vo, i.e., worked in PWM
In journey and saturation conduction state under when, power tube Q2 and it is excitatory to vice-side winding Ns when, the induced voltages of primary side winding Np at this time.
Those skilled in the art are operation principles that can voluntarily according to the first side Vs work, analyze work during the second side Vo work
Make principle, which is not described herein again, it is possible to realize that, when the second side works, the RCDW circuits of primary side do not reabsorb energy.
Equally, during the first diode D1 forward conductions, the first power tube Q1 in parallel synchronizes conducting therewith, you can realizes the
The synchronous rectification of one power tube Q1 further improves the conversion efficiency from the second side Vo to the first side Vs.
It is experimental data below：
Vs operating voltages are 2.8V, are the voltage of a super capacitor, and power tube Q1 is SIR422, is the MOS of 40V 40A
Pipe, RDS (ON) are 6.6m Ω, are encapsulated as SO-8, and diode D1 is SK1040M, and diode D3 is 1N4148, and capacitance C1 is
470pF, resistance R1 are 10 Ω, and zener diode W1 is the voltage-stabiliser tube of 3.3V/0.25W；
Vo operating voltages are 28V, are the voltage of a super capacitor group, are power obtained by after ten super capacitors are connected
Pipe Q2 be ZXMN10A11G, be 100V/2.4A RDS (ON) be 0.35 Ω metal-oxide-semiconductors, be encapsulated as SOT-223, diode D2 is
SS210, diode D3 are SS210, and capacitance C2 is 1000pF, and resistance R2 is 100 Ω, and zener diode W2 is the steady of 30V/0.5W
Pressure pipe；
The parameter of transformer B：Magnetic core is the general magnetic core of ER20；Primary side winding Np is 2 circles, is 15 strands of 0.2mm enameled wires
And around；Vice-side winding Ns be 20 circles, be 3 strands of 0.2mm enameled wires and around；Design power is 28W；
There is no the current sense resistors that setting can reduce conversion efficiency, and the technical solution of PWM control aspects is using China
It is entitled application No. is 201410459391.3《A kind of equalization charging circuit and battery pack》Technical solution, limit maximum duty
Than to control operating current, and reversible transducer is changed to by Fig. 4.
The integrated circuit of master control is ISL6840, and working frequency is 330KHz, surveys the conversion efficiency of the present invention：
Conversion efficiency from the first side Vs to the second side Vo：85.3%；
From the second side Vo to the conversion efficiency of the first side Vs：90.5%；
The prior art：
W1 and W2 is short-circuit, and resistance R1 is adjusted to 27 Ω from 10 Ω, and resistance R2 is adjusted to 2.2K Ω, efficiency from 100 Ω
It falls to：
Conversion efficiency from the first side Vs to the second side Vo：83.9%, compared with the present invention, have dropped 1.4%.
From the second side Vo to the conversion efficiency of the first side Vs：88.7%；Compared with the present invention, 1.8% is had dropped.
As it can be seen that when primary side is excitatory, the RCD absorbing circuits of secondary are not involved in work；When secondary is excitatory, the RCD of primary side
Absorbing circuit is not involved in work；Realize " lossless " absorb；Isolated two-way transformation is realized in higher efficiency, realizes invention mesh
's.
In the first embodiment, multiple embodiments are in fact presented, during the second diode D2 forward conductions, therewith simultaneously
Second power tube Q2 of connection synchronizes conducting, you can realizes the synchronous rectification of the second power tube Q2, this is second of embodiment party
Formula；During the first diode D1 forward conductions, the first power tube Q1 in parallel synchronizes conducting therewith, you can realizes the first power tube Q1
Synchronous rectification, if independent implement, this is the third embodiment；Implement simultaneously, i.e., implement simultaneously with second, be exactly
4th kind of embodiment no longer goes combination to show here.
Second embodiment
For the occasion that Partial Power is larger, the power of zener diode W1 and W2 may be insufficient, absorbing leakage inductance energy
When, it is easily damaged, this just needs the more powerful both ends sub-network that can substitute voltage-stabiliser tube to realize goal of the invention.Second implements
The technical solution exemplified.
Zener diode W1 and W2 in Fig. 4 only, are regarded as a both ends subnet by the still same Fig. 4 of technology overall plan
Network, the left-hand component of Fig. 7 show this both ends sub-network that can substitute voltage-stabiliser tube, are a zener diodes on the right of Fig. 7
W1, they are equivalent, the left-hand component connection relations of Fig. 7：Including at least a zener diode W101, a triode
The collector of the cathode connected to the transistor Q101 of Q101, zener diode W101, the anode of zener diode W101 connect three poles
The base stage of pipe Q101, forms the both ends sub-network that can substitute voltage-stabiliser tube in this way, and the collector of triode Q101 becomes both ends subnet
The cathode of network, the emitter of triode Q101 become the anode of both ends sub-network, and the cathode and anode of both ends sub-network corresponds to voltage-stabiliser tube
Cathode and anode.
Operation principle, voltage stabilizing value of the voltage stabilizing value equal to W101 of the left-hand component of Fig. 7 and the emitter junction pressure drop of Q101, when
When adding the voltage after current limliting between cathode and anode, cathode adds positive pressure, and anode adds negative pressure, and W101 is breakdown by the emitter junction of Q101,
Penetrating current flows through the emitter junction of Q101, this electric current is amplified by Q101, i.e., the electric current for actually flowing through W101 is total work electricity
(1/ β) of stream, β are the direct current amplification factor of triode Q101, in this way, the electrical power that most of electric current generates is born by Q101,
Q101 is triode, it is easy to increase actual power by type selecting, finned.
The left-hand component of Fig. 7 as shown in fig. 7, it is similary to realize goal of the invention in load map 4.
Note：Transistor can be referred to as transistor, and zener diode can equally be referred to as voltage-stabiliser tube.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention.
It for those skilled in the art, without departing from the spirit and scope of the present invention, can be with
Make several improvements and modifications, such as with this kind of quasi- integrated regulators of three end groups of TL431, coordinate peripheral resistance and this can replace
For voltage-stabiliser tube；TVS pipe even can be used；In low pressure occasion, using the forward conduction voltage drop of light emitting diode, to substitute voltage stabilizing
Pipe, these improvements and modifications also should be regarded as protection scope of the present invention, no longer repeated here with embodiment, protection model of the invention
Claim limited range should be subject to by enclosing.
Claims (8)
1. a kind of reversible transducer, including the first side, the second side, a transformer, the first power tube, the second power tube, first
Diode, the second diode, third diode, the 4th diode, the first capacitance, the second capacitance, first resistor, second resistance,
And first zener diode, the second zener diode, transformer include at least primary side winding and vice-side winding, connection relation
For：The source electrode of first power tube is connect with the anode of first diode, and forms the defeated of first side
The drain electrode for entering the first negative, described power tube is connect with the cathode of first diode, and tie point is also connected with the change
The different name end of the primary side winding of depressor, tie point also connect the anode of the third diode, first voltage stabilizing simultaneously
Diode is in parallel with first capacitance after connecting with the first resistor, the transformer of the anode connection after parallel connection
Primary side winding Same Name of Ends, and form the input of first side just, it is in parallel after cathode connection the three or two pole
The cathode of pipe；The source electrode of second power tube is connect with the anode of second diode, and forms described second
The input of side is born, and the drain electrode of second power tube is connect with the cathode of second diode, and tie point is also connected with institute
The Same Name of Ends of the vice-side winding for the transformer stated, tie point also connect the anode of the 4th diode simultaneously, and described the
Two zener diodes are in parallel with second capacitance after connecting with the second resistance, described in the anode connection after parallel connection
The different name end of the vice-side winding of transformer, and form the input of the second side just, it is in parallel after cathode connection it is described the
The cathode of four diodes；
It is characterized in that：The voltage stabilizing value of first zener diode is more than the primary side winding induced voltage, the original
Side winding induced voltage refers in particular to：In the second power tube saturation conduction of the second side, and the vice-side winding is swashed
During magnetic, the induced voltage of the primary side winding at this time；The voltage stabilizing value of second zener diode is more than the secondary
Winding induced voltage, the vice-side winding induced voltage refer in particular to：In the first power tube saturation conduction of first side,
And when excitatory to the primary side winding, the induced voltage of the vice-side winding at this time.
2. reversible transducer according to claim 1, it is characterized in that：When second diode forward is connected, therewith
Second power tube in parallel synchronizes conducting.
3. reversible transducer according to claim 1, it is characterized in that：When first diode forward is connected, therewith
First power tube in parallel synchronizes conducting.
4. reversible transducer according to any one of claims 1 to 3, it is characterized in that：By first zener diode
And/or second zener diode replaces with the both ends with one-way conduction performance and voltage stabilizing function of other devices composition
Sub-network, the both ends sub-network include two terminals of anode and cathode.
5. reversible transducer according to claim 4, it is characterized in that：The both ends sub-network include zener diode and
Triode, the anode for emitting the extremely described both ends sub-network of the triode, the collector of the triode and institute
The cathode for the zener diode stated forms the cathode of the both ends sub-network after being connected, the base stage of the triode with it is described
The anode of zener diode be connected.
6. reversible transducer according to claim 4, it is characterized in that：The both ends sub-network is TVS pipe.
7. reversible transducer according to claim 4, it is characterized in that：The both ends sub-network is light emitting diode.
8. reversible transducer according to claim 4, it is characterized in that：The both ends sub-network is the quasi- voltage stabilizing collection of three end groups
Coordinate peripheral resistance composition into circuit TL431.
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| CN107482921A (en) * | 2017-08-03 | 2017-12-15 | 广州金升阳科技有限公司 | A kind of two-way DC DC converters |
| EP3525333A1 (en) * | 2018-02-07 | 2019-08-14 | Siemens Aktiengesellschaft | Bi-directional paralysis circuit |
| CN114629346B (en) * | 2022-04-28 | 2023-11-03 | 苏州浪潮智能科技有限公司 | Ethernet equipment, bidirectional converter and control method thereof |
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| CN203340336U (en) * | 2013-03-04 | 2013-12-11 | 江南大学 | LED driving power and light modulation system |
| CN103607004A (en) * | 2013-11-12 | 2014-02-26 | 珠海朗尔电气有限公司 | Storage battery packet bidirectional lossless equalization and pulse activation system |
| CN104201744A (en) * | 2014-09-10 | 2014-12-10 | 广州金升阳科技有限公司 | Equalizing charge circuit and battery pack |
| CN104393651A (en) * | 2014-12-03 | 2015-03-04 | 安徽贵博新能科技有限公司 | Bidirectional lossless active balance device |
| CN104518671A (en) * | 2013-09-30 | 2015-04-15 | 英飞凌科技奥地利有限公司 | Voltage converter |
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| US7830686B2 (en) * | 2007-06-05 | 2010-11-09 | Honeywell International Inc. | Isolated high power bi-directional DC-DC converter |
| US9531299B2 (en) * | 2011-12-28 | 2016-12-27 | Det International Holding Limited | Resonant single stage DC-AC converter with capacitors forming a half-bridge |
| US8958217B2 (en) * | 2012-06-15 | 2015-02-17 | General Electric Company | System for driving a piezoelectric load and method of making same |
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|---|---|---|---|---|
| CN203340336U (en) * | 2013-03-04 | 2013-12-11 | 江南大学 | LED driving power and light modulation system |
| CN104518671A (en) * | 2013-09-30 | 2015-04-15 | 英飞凌科技奥地利有限公司 | Voltage converter |
| CN103607004A (en) * | 2013-11-12 | 2014-02-26 | 珠海朗尔电气有限公司 | Storage battery packet bidirectional lossless equalization and pulse activation system |
| CN104201744A (en) * | 2014-09-10 | 2014-12-10 | 广州金升阳科技有限公司 | Equalizing charge circuit and battery pack |
| CN104393651A (en) * | 2014-12-03 | 2015-03-04 | 安徽贵博新能科技有限公司 | Bidirectional lossless active balance device |
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