CN206259867U - A kind of rail vehicle low-loss rectification circuit - Google Patents
A kind of rail vehicle low-loss rectification circuit Download PDFInfo
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- CN206259867U CN206259867U CN201621225460.5U CN201621225460U CN206259867U CN 206259867 U CN206259867 U CN 206259867U CN 201621225460 U CN201621225460 U CN 201621225460U CN 206259867 U CN206259867 U CN 206259867U
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Abstract
A kind of rail vehicle low-loss rectification circuit, wherein, first order rectification circuit is connected with second level voltage over zero testing agency, third level drive control mechanism and fourth stage dc source respectively, second level voltage over zero testing agency is connected with third level drive control mechanism, fourth stage dc source respectively, and third level drive control mechanism is connected with fourth stage dc source.Use metal-oxide-semiconductor to replace commutation diode to constitute rectification circuit to realize that reducing rectification circuit is lost, and rectification circuit efficiency can be effectively improved, and then save the energy of rail vehicle；And processed by second level voltage over zero testing agency, third level drive control mechanism and fourth stage dc source three-level floating, efficiently solve the generation of IC chip power supply voltage range and the unmatched problem of VD scope and metal-oxide-semiconductor driving control signal, with simple, practical, easy care and low cost the features such as, wide market.
Description
Technical field
The utility model is related to rectification circuit technical field, more particularly to a kind of rail vehicle low-loss rectification circuit.
Background technology
As electronic equipment and instrument are to the continuous propulsion of miniaturization trend, promote rectifier to small-volume large-power
Direction growth requirement increases severely, particularly in track transportation industry, because the usable space of rail vehicle is limited and energy resources
Preciousness, then the scarcity of small-volume large-power commutation diode is as the technical bottleneck for improving small size rectifier power.
Practice aspect, rectifier major part on the market is the bridge rectifier or halfwave rectifier being constituted by a diode at present
Device, when output current is larger, the loss on commutation diode will be higher, and then increased on commutation diode radiating side
The design cost in face, while also reducing the efficiency of rectifier, and wastes the energy.
Theoretical side, also by the low-loss rectification circuit constituted for metal-oxide-semiconductor in some scientific journals and scientific paper
The discussion and analysis for carrying out, but there is also not comprehensive, irrational defect, general performance it is following some：1., input AC
The scope of voltage is not defined；2., the scope of output DC voltage is not illustrated；3., rectifier internal integrated circuit chip
Power supply voltage range is not illustrated with whether rectifier output DC voltage range matches, just directly given using VD
Integrated circuit, this way be not inconsistent it is logical, but many operators do so, if mismatch, it should how
Treatment, does not illustrate yet；4., the drive control part on metal-oxide-semiconductor, most of operator is controlled excessively using central processing unit
Complexity, while some drive control parts are to discuss structured flowchart, does not provide side circuit and software controlling strategies, lacks
Weary practice value；5., relevant metal-oxide-semiconductor composition rectifier bridge aspect, the annexation between each metal-oxide-semiconductor pin is unintelligible, MOS
The type declaration (being PMOS, go back the problem of NMOS tube) of pipe is ambiguous, does not also analyze the parasitic parameter of metal-oxide-semiconductor to rectification
The influence of bridge, when need consider metal-oxide-semiconductor parasitic parameter, when posting without the concern for metal-oxide-semiconductor
Raw parameter, these problems are not all analyzed and illustrate, cause theoretical content to lack practice and are worth.
Utility model content
The technical problem that the utility model is solved is to provide a kind of rail vehicle low-loss rectification circuit, to solve
Shortcoming in above-mentioned background technology.
The technical problem that the utility model is solved is realized using following technical scheme：
A kind of rail vehicle low-loss rectification circuit, including the detection of first order rectification circuit, second level voltage over zero
Mechanism, third level drive control mechanism and fourth stage dc source, wherein, first order rectification circuit respectively with the second step voltage mistake
The connection of zero point testing agency, third level drive control mechanism and fourth stage dc source, second level voltage over zero testing agency
It is connected with third level drive control mechanism, fourth stage dc source respectively, third level drive control mechanism and fourth stage direct current
Source connects；And first order rectification circuit includes the bridge rectifier being made up of metal-oxide-semiconductor and gate bias resistor, the second step voltage
Zero-crossing examination mechanism includes supply voltage amplitude limiter and generating positive and negative voltage comparator, and third level drive control mechanism includes light
Isolator and simulant electronic switch are electrically coupled, fourth stage dc source includes the voltage-stabilized power supply being made up of resistance and voltage-stabiliser tube.
In the utility model, each part concrete structure is as follows：
The first order rectification circuit includes the first PMOS, the second PMOS, the 3rd NMOS tube, the 4th NMOS tube, the
12 resistance, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance and
19th resistance, wherein, the 4th pin of the first PMOS, the first pin of the 4th NMOS tube connect with input ac power live wire respectively
Connect, the 4th pin of the second PMOS, the first pin of the 3rd NMOS tube are connected with input ac power zero line respectively, the first PMOS
The 3rd pin (source electrode) be connected with the 3rd pin of the second PMOS after as output DC power anode, the second of the 3rd NMOS tube
Conduct exports DC power cathode after pin is connected with the crus secunda of the 4th NMOS tube；One end of 16th resistance and the first PMOS
The connection of the first pin, the other end of the 16th resistance is connected the 4th simulation of integrated circuit electronic switch with one end of the 12nd resistance
The first pin, the 12nd resistance the other end connection output DC power anode；One end of 17th resistance and the second PMOS
The first pin connection, the other end of the 17th device resistance and one end of the 13rd resistance are connected to the 4th simulation of integrated circuit electronics
3rd pin of switch, the other end connection output DC power anode of the 13rd resistance；One end of 18th resistance, the 14th electricity
Threeth pin of the one end of resistance respectively with the 3rd NMOS tube is connected, and the other end of the 18th resistance and the 5th integrated circuit electronic are simulated
The 3rd pin connection of switch, the other end of the 14th resistance is connected with output DC power cathode；One end of 19th resistance,
Threeth pin of the one end of 15 resistance respectively with the 4th NMOS tube is connected, the other end and the 5th integrated circuit die of the 19th resistance
Intend the first pin connection of electronic switch, the other end of the 15th resistance is connected with output DC power cathode；
Second level voltage over zero testing agency include the 3rd integrated circuit voltage comparator, first resistor, second resistance,
First diode, the second diode, of 3rd resistor, the first electric capacity, the second electric capacity and composition supply voltage amplitude limiter
Three diodes, the 4th diode, the 8th voltage-stabiliser tube, the 9th voltage-stabiliser tube, wherein, the anode of the 8th voltage-stabiliser tube and the 9th voltage-stabiliser tube
Anode is connected, and the second electric capacity is in parallel with second resistance, and the negative electrode of the 9th voltage-stabiliser tube, one end of the second electric capacity, second resistance
The anode of one end, one end of first resistor, the negative electrode of the first diode and the second diode collects with the 3rd respectively after connecting jointly
Inverting input crus secunda, the pin of in-phase input end the 5th connection into circuit voltage comparator；Negative electrode, second of the 4th voltage-stabiliser tube
The sun of the other end of electric capacity, the other end of second resistance, one end of 3rd resistor, the negative electrode of the 4th diode and the 3rd diode
The pin of in-phase input end the 3rd, the pin of inverting input the 6th after extremely common connection respectively with the 3rd integrated circuit voltage comparator connect
Connect；The other end connection input ac power live wire of first resistor, the other end connection input ac power zero line of 3rd resistor,
Anode of the anode of the anode of the first diode and the 4th diode respectively with the first voltage-stabiliser tube is connected, the negative electrode of the second diode
With the negative electrode that the negative electrode of the 3rd diode connects the first voltage-stabiliser tube respectively；The power end the 8th of the 3rd integrated circuit voltage comparator
Negative electrode again with the first voltage-stabiliser tube is connected after pin is connected with one end of the first electric capacity, the ground connection of the 3rd integrated circuit voltage comparator
Anode after holding the 4th pin to be connected with the other end of the first electric capacity again with the first voltage-stabiliser tube is connected, and the 3rd integrated circuit voltage compares
The pin of output end first of device connects the first pin of the first integrated-circuit photoelectric coupling isolator, the 3rd integrated circuit voltage comparator
The pin of output end the 7th connect the second integrated-circuit photoelectric coupling isolator the first pin；
The third level drive control mechanism includes the first integrated-circuit photoelectric coupling isolator, the second integrated-circuit photoelectric
Coupling isolator, the 4th simulation of integrated circuit electronic switch, the 5th simulation of integrated circuit electronic switch, the 8th resistance, the 9th electricity
Resistance, the tenth resistance, the 11st resistance, the 5th electric capacity and the 6th electric capacity, wherein, the input of the first integrated-circuit photoelectric coupling isolator
The first pin again with the 3rd integrated circuit voltage comparator output terminal is connected after first pin at end is connected with one end of the 8th resistance,
The crus secunda of the first integrated-circuit photoelectric coupling isolator input is connected with the 5th voltage stabilizing tube anode；Second integrated-circuit photoelectric
First pin of coupling isolator input is exported with the 3rd integrated circuit voltage comparator again after being connected with one end of the 9th resistance
The 7th pin connection at end, the crus secunda of the second integrated-circuit photoelectric coupling isolator input is connected with the 5th voltage stabilizing tube anode,
The other end of the 8th resistance, the other end of the 9th resistance are connected with the 5th voltage stabilizing tube cathode respectively；First integrated-circuit photoelectric coupling
4th pin of conjunction isolator output end is input into the 4th simulation of integrated circuit electronic switch again after being connected with one end of the tenth resistance
The 6th pin connection at end, the 3rd pin of the first integrated-circuit photoelectric coupling isolator output end is connected with the 6th voltage stabilizing tube anode；
4th pin of the second integrated-circuit photoelectric coupling isolator output end is integrated with the 5th again after being connected with one end of the 11st resistance
Breadboardin electronic switch input the 6th pin connection, the 3rd pin of the second integrated-circuit photoelectric coupling isolator output end with
7th voltage stabilizing tube anode is connected；The other end of the tenth resistance, one end of the 6th electric capacity and the 6th voltage stabilizing tube cathode are connected to a bit,
The other end of the 6th electric capacity is connected with the 6th voltage stabilizing tube anode；The other end of the 11st resistance, one end and the 7th of the 5th electric capacity
Voltage stabilizing tube cathode is connected to a bit, and the other end of the 5th electric capacity is connected with the 7th voltage stabilizing tube anode；
The fourth stage dc source includes the 4th resistance, the 5th resistance, the 3rd electric capacity, the 4th electric capacity, the 7th electric capacity, the
Eight electric capacity, the 9th electric capacity, the 5th voltage-stabiliser tube, the 6th voltage-stabiliser tube and the 7th voltage-stabiliser tube, wherein, the 4th resistance one end and the 6th voltage stabilizing
Tube anode is connected, and the other end is connected with the 5th voltage stabilizing tube cathode；5th resistance one end is connected with the 5th voltage stabilizing tube anode, the other end
It is connected with the 7th voltage stabilizing tube cathode；3rd electric capacity one end is connected with the 6th voltage stabilizing tube cathode, the other end and the 6th voltage stabilizing tube anode
Connection；4th electric capacity one end is connected with the 7th voltage stabilizing tube cathode, and the other end is connected with the 7th voltage stabilizing tube anode；7th electric capacity and
Five voltage-stabiliser tubes are in parallel；8th electric capacity is in parallel with the 6th voltage-stabiliser tube；9th electric capacity is in parallel with the 7th voltage-stabiliser tube.
In the utility model, parasitic diode is respectively arranged between the drain electrode of four metal-oxide-semiconductors and source electrode, and four are posted
Raw diode composition bridge rectifier, plays rectifier unlatching effect near input ac power voltage over zero.
Beneficial effect：The utility model uses metal-oxide-semiconductor to replace commutation diode to constitute rectification circuit to realize reducing rectification
Circuit loss, and rectification circuit efficiency can be effectively improved, and then save the energy of rail vehicle；And by the second step voltage mistake
The treatment of zero point testing agency, third level drive control mechanism and fourth stage dc source three-level floating, efficiently solves integrated electricity
The generation of road chip power supply voltage range and the unmatched problem of VD scope and metal-oxide-semiconductor driving control signal, phase
Than the features such as producing driving control signal that there is simple, practical, easy care and low cost using processor, while can reduce whole
The spending in terms of radiating with structure design is spent in the middle of stream device design, to improve the cost performance of rectifier, with wide city
Field prospect.
Brief description of the drawings
Fig. 1 is the structural representation of preferred embodiment of the present utility model.
Fig. 2 is the circuit connection diagram of preferred embodiment of the present utility model.
Fig. 3 is the first order rectification circuit circuit connection diagram in preferred embodiment of the present utility model.
Fig. 4 is the second level voltage over zero testing agency circuit connection diagram in preferred embodiment of the present utility model.
Fig. 5 is the third level drive control mechanism circuit connection figure in preferred embodiment of the present utility model.
Fig. 6 is the fourth stage DC power supply circuit connection figure in preferred embodiment of the present utility model.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to a kind of rail vehicle low-loss rectification circuit of Fig. 1~Fig. 2, including first order rectification circuit, the second level
Voltage over zero testing agency, third level drive control mechanism and fourth stage dc source, wherein,
First order rectification circuit respectively with second level voltage over zero testing agency, third level drive control mechanism and the 4th
Level dc source connection, second level voltage over zero testing agency respectively with third level drive control mechanism, fourth stage direct current
Source connects, and third level drive control mechanism is connected with fourth stage dc source；And first order rectification circuit is included by metal-oxide-semiconductor and grid
The bridge rectifier of pole biasing resistor composition, second level voltage over zero testing agency include supply voltage amplitude limiter and
Generating positive and negative voltage comparator, third level drive control mechanism includes optocoupler isolator and simulant electronic switch, fourth stage direct current
Power supply includes the voltage-stabilized power supply being made up of resistance and voltage-stabiliser tube.
Shown in Figure 3, the first order rectification circuit includes the first PMOS, the second PMOS, the 3rd NMOS tube, the
Four NMOS tubes, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance,
18 resistance and the 19th resistance, wherein, the 4th pin (drain electrode) of the first PMOS, first pin (drain electrode) of the 4th NMOS tube point
It is not connected with input ac power live wire, the 4th pin (drain electrode) of the second PMOS, first pin (drain electrode) of the 3rd NMOS tube point
It is not connected with input ac power zero line, the 3rd pin (source electrode) of the first PMOS is with the 3rd pin (source electrode) of the second PMOS even
As output DC power anode after connecing, the crus secunda (source electrode) of the 3rd NMOS tube is with the crus secunda (source electrode) of the 4th NMOS tube even
As output DC power cathode after connecing；One end of 16th resistance is connected with first pin (grid) of the first PMOS, and the tenth
One end of the other end of six resistance and the 12nd resistance is connected to the 4th simulation of integrated circuit electronic switch (U4) the first pin (mark
Number be Vgsp1), the other end of the 12nd resistance is connected to output DC power anode；One end of 17th resistance and the 2nd PMOS
First pin (grid) connection of pipe, the other end of the 17th device resistance and one end of the 13rd resistance are connected to the 4th integrated circuit
Simulant electronic switch (U4) the 3rd pin (marked as Vgsp2), the other end of the 13rd resistance is connected to output DC power anode；
One end of 18th resistance is connected to the 3rd pin (grid) of the 3rd NMOS tube with one end of the 14th resistance, the 18th resistance
The other end is connected to the 5th integrated circuit electronic analog switch (U5) the 3rd pin (marked as Vgsp3), the 14th resistance it is another
End is connected to output DC power cathode；One end of 19th resistance is connected to the 4th NMOS tube with one end of the 15th resistance
3rd pin (grid), the other end of the 19th resistance is connected to the 5th simulation of integrated circuit electronic switch (U5) the first pin (mark
Number be Vgsp4), the other end of the 15th resistance is connected to output DC power cathode.
Shown in Figure 4, second level voltage over zero testing agency includes the 3rd integrated circuit voltage comparator (U3),
One resistance, second resistance, 3rd resistor, the first diode, the second diode, the 3rd diode, the 4th diode, the 8th voltage stabilizing
Pipe, the 9th voltage-stabiliser tube, the first electric capacity and the second electric capacity, wherein, the anode of the 8th voltage-stabiliser tube is connected with the anode of the 9th voltage-stabiliser tube,
Second electric capacity is in parallel with second resistance, and the 9th voltage-stabiliser tube negative electrode, one end of the second electric capacity, one end of second resistance, first
The anode of one end of resistance, the negative electrode of the first diode and the second diode is commonly connected to the 3rd integrated circuit voltage comparator
(U3) inverting input crus secunda and the pin of in-phase input end the 5th；Negative electrode, the other end of the second electric capacity, of the 8th voltage-stabiliser tube
The anode of the other end of two resistance, one end of 3rd resistor, the negative electrode of the 4th diode and the 3rd diode is commonly connected to
Three integrated circuit voltage comparator (U3) the pin of in-phase input end the 3rd and the pin of inverting input the 6th；The other end of first resistor
Connection input ac power live wire, 3rd resistor the other end connection input ac power zero line, the anode of the first diode and
The anode of the 4th diode connects the negative electrode point of the anode of the 5th voltage-stabiliser tube, the negative electrode of the second diode and the 3rd diode respectively
Not Lian Jie the 5th voltage-stabiliser tube negative electrode；3rd integrated circuit voltage comparator (U3) power end octal and the first electric capacity one
Negative electrode after the connection of end again with the 5th voltage-stabiliser tube is connected, the 3rd integrated circuit voltage comparator (U3) the pin of earth terminal the 4th and
Anode after the other end connection of one electric capacity again with the 5th voltage-stabiliser tube is connected, the 3rd integrated circuit voltage comparator (U3) output
The first pin and the 7th pin is held to connect the first integrated-circuit photoelectric coupling isolator (U respectively1) the first pin and the second integrated circuit
Optocoupler isolator (U2) the first pin；
Shown in Figure 5, the third level drive control mechanism includes the first integrated-circuit photoelectric coupling isolator (U1)、
Second integrated-circuit photoelectric coupling isolator (U2), the 4th simulation of integrated circuit electronic switch (U4), the 5th simulation of integrated circuit electricity
Sub switch (U5), the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 5th electric capacity and the 6th electric capacity, wherein, first
Integrated-circuit photoelectric coupling isolator (U1) input the first pin be connected with one end of the 8th resistance after again with the 3rd integrated electricity
Road voltage comparator (U3) output end the first pin connection, the first integrated-circuit photoelectric coupling isolator (U1) input second
Pin is connected with the anode of the 5th voltage-stabiliser tube；Second integrated-circuit photoelectric coupling isolator (U2) input the first pin and the 9th electricity
Resistance one end connection after again with the 3rd integrated circuit voltage comparator (U3) output end the 7th pin connection, the second integrated circuit light
It is electrically coupled isolator (U2) crus secunda of input is connected with the anode of the 5th voltage-stabiliser tube, the other end of the 8th resistance and the 9th electricity
Negative electrode of the other end of resistance respectively with the 5th voltage-stabiliser tube is connected；First integrated-circuit photoelectric coupling isolator (U1) output end
Four pin be connected with one end of the tenth resistance after again with the 4th simulation of integrated circuit electronic switch (U4) input the 6th pin connection,
First integrated-circuit photoelectric coupling isolator (U1) the 3rd pin of output end is connected with the anode of the second voltage-stabiliser tube；Second integrated electricity
Road optocoupler isolator (U2) output end the 4th pin be connected with one end of the 11st resistance after again with the 5th integrated circuit die
Intend electronic switch (U5) input the 6th pin connection, the second integrated-circuit photoelectric coupling isolator (U2) output end the 3rd pin
Anode with the 7th voltage-stabiliser tube is connected；The negative electrode connection of the other end, one end of the 6th electric capacity and the 6th voltage-stabiliser tube of the tenth resistance
In a bit, the other end of the 6th electric capacity is connected with the anode of the 6th voltage-stabiliser tube；The other end of the 11st resistance, the one of the 5th electric capacity
The negative electrode of end and the 7th voltage-stabiliser tube is connected to a bit, and the other end of the 5th electric capacity is connected with the anode of the 7th voltage-stabiliser tube；
Shown in Figure 6, the fourth stage dc source includes the 4th resistance, the 5th resistance, the 3rd electric capacity, the 4th electricity
Appearance, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the 5th voltage-stabiliser tube, the 6th voltage-stabiliser tube and the 7th voltage-stabiliser tube, wherein, the 4th resistance
One end is connected with the anode of the 6th voltage-stabiliser tube, and the other end is connected with the negative electrode of the 5th voltage-stabiliser tube；5th resistance one end is steady with the 5th
The anode connection of pressure pipe, the other end is connected with the negative electrode of the 7th voltage-stabiliser tube；3rd electric capacity one end connects with the negative electrode of the 6th voltage-stabiliser tube
Connect, the other end is connected with the anode of the 6th voltage-stabiliser tube；4th electric capacity one end is connected with the negative electrode of the 7th voltage-stabiliser tube, the other end and
The anode connection of seven voltage-stabiliser tubes；7th electric capacity is in parallel with the 5th voltage-stabiliser tube；8th electric capacity is in parallel with the 6th voltage-stabiliser tube；9th electric capacity
It is in parallel with the 7th voltage-stabiliser tube.
The principle analysis of the present embodiment is as follows：
In first order rectification circuit, two PMOS (Q1And Q2) and two NMOS tube (Q3And Q4) composition bridge rectifier
Circuit：Two PMOS (Q1And Q2) source electrode connection as export dc source positive pole；Two NMOS tube (Q3And Q4) source
Pole connection is used as the negative pole for exporting dc source；First PMOS (Q1) drain electrode and the 4th NMOS tube (Q4) drain electrode be connected
To input ac power live wire；Second PMOS (Q2) drain electrode and the 3rd NMOS tube (Q3) drain electrode be connected to input AC electricity
Source zero line；Because four metal-oxide-semiconductors are that discrete device (if four metal-oxide-semiconductors are not discrete devices, but is integrated, led to
Without considering the parasitic diode between drain electrode and source electrode in the case of often), i.e., two single PMOS (Q1And Q2) and two lists
Only NMOS tube (Q3And Q4), therefore four metal-oxide-semiconductors all need to consider influence of the parasitic parameter to circuit, four drain electrodes of metal-oxide-semiconductor with
Parasitic diode between source electrode just also constitutes bridge rectifier, and the bridge rectifier of four parasitic diode compositions exists
Rectifier unlatching effect is played near input ac power voltage over zero, when positive and negative zero crossing absolute value of voltage is more than the 3rd collection
Into circuit voltage comparator (U3) set by positive and negative threshold value when, the related metal-oxide-semiconductor of four metal-oxide-semiconductors forms on or off
Bridge rectifier, while the parasitic diode of four metal-oxide-semiconductor drain-source interpolars is divided into two groups (one group：First PMOS (Q1) hourglass source electrode
Between parasitic diode and the 3rd NMOS tube (Q3) drain-source interpolar parasitic diode；Another group：Second PMOS (Q2) hourglass source electrode
Between parasitic diode and the 4th NMOS tube (Q4) drain-source interpolar parasitic diode) by by the low conducting of metal-oxide-semiconductor drain-source interpolar
(one group of resistance：Rds_Q1And Rds_Q3；Another group：Rds_Q2And Rds_Q4) short circuit in turn；Four gate drive voltage sequential of metal-oxide-semiconductor
Grid voltage drive signal will be produced by follow-up voltage over zero detection and drive control part；
In second level voltage over zero testing agency and third level drive control mechanism, at input ac power voltage
When positive half cycle, it is assumed that the positive polarity threshold value of input ac power voltage is V+th_in, now V+th_inMeet lower relation of plane
During formula, Vth_A=| V+th_in|*((R2/2)/(R1+R2+R3)) ＞ VIO max≈ 9mV, the 3rd integrated circuit voltage comparator (U3) defeated
Go out the first pin output low-voltage at end, then the first integrated-circuit photoelectric coupling isolator (U1) input light emitting diode cut
Only, thus the first integrated-circuit photoelectric coupling isolator (U1) output end the 4th pin be high level, i.e. the 4th simulation of integrated circuit
Electronic switch (U4) input the 6th pin be high level, the 4th simulation of integrated circuit electronic switch (U4) normally opened contact connect
And normally-closed contact open circuit, the 4th simulation of integrated circuit electronic switch (U4) output end the first pin be low level (Vgsp1=VL)
It is high level (i.e. V with the 3rd pingsp2=VH, because the 3rd pin of the 4th simulation of integrated circuit electronic switch is by the 13rd resistance
Output DC power anode is moved to, so being high level)；Now the grid of the first PMOS is low level, then a PMOS
Pipe is turned on；Now the grid voltage of the second PMOS is high level, then the cut-off of the second PMOS；3rd integrated circuit voltage ratio
Compared with device (U3) output end the 7th pin output high level, then the second integrated-circuit photoelectric coupling isolator (U2) input hair
Optical diode is turned on, so the second integrated-circuit photoelectric coupling isolator (U2) output end the 4th pin be low level, i.e., the 5th
Simulation of integrated circuit electronic switch (U5) input the 6th pin be low level, the 5th simulation of integrated circuit electronic switch (U5)
Normally opened contact is opened a way and normally-closed contact is connected；5th simulation of integrated circuit electronic switch (U5) output end the first pin be low electricity
Flat (i.e. Vgsp4=VL, because the first pin of the 5th simulation of integrated circuit electronic switch is by the 15th resistive pull-downs to output direct current
Source negative pole, thus be low level) and the 3rd pin be high level (Vgsp3=VH), then the grid of the 3rd NMOS tube is high level, the
Three NMOS tubes are turned on, and the grid voltage of the 4th NMOS tube is low level, the cut-off of the 4th NMOS tube.Then formed one it is complete whole
Flow back to road：First PMOS is turned on, the cut-off of the second PMOS, the conducting of the 3rd NMOS tube, the cut-off of the 4th NMOS tube.
When input ac power voltage is in negative half period, it is assumed that the negative polarity threshold value of input ac power voltage is
V-th_in, now V-th_inWhen meeting following relational expression, Vth_B=| V-th_in|*((R2/2)/(R1+R2+R3)) ＞ VIO max≈9mV
3rd integrated circuit voltage comparator (U3) output end the first pin output HIGH voltage, then the first integrated-circuit photoelectric coupling every
From device (U1) input LEDs ON, so the first integrated-circuit photoelectric coupling isolator (U1) output end the 4th
Pin is low level, i.e. the 4th simulation of integrated circuit electronic switch (U4) input the 6th pin be low level, the 4th integrated circuit
Simulant electronic switch (U4) normally opened contact cut-off and normally-closed contact conducting, the 4th simulation of integrated circuit electronic switch (U4) it is defeated
The first pin for going out end is high level (Vgsp1=VH, because the first pin of the 4th simulation of integrated circuit electronic switch is by the 12nd resistance
Output DC power anode is pulled upward to, so being high level), and the 3rd pin is low level (Vgsp2=VL), then the first PMOS
Grid be high level, the first PMOS cut-off, the grid voltage of the second PMOS is low level, the conducting of the second PMOS；The
Three integrated circuit voltage comparator (U3) the 7th pin of output end is output as low level, then the coupling of the second integrated-circuit photoelectric every
From device (U2) input light emitting diode cut-off, so the second integrated-circuit photoelectric coupling isolator (U2) output end the 4th
Pin is high level, i.e. the 5th simulation of integrated circuit electronic switch (U5) input the 6th pin be high level, the 5th integrated circuit
Simulant electronic switch (U5) normally opened contact connect and normally-closed contact open circuit, the 5th simulation of integrated circuit electronic switch (U5) output
First pin at end is high level (Vgsp4=VH) and the 3rd pin be low level (i.e. Vgsp3=VL, because the 5th simulation of integrated circuit is electric
Sub switch (U5) the 3rd pin by the 14th resistive pull-downs to output DC power cathode, so being low level), then the 3rd
The grid of NMOS tube is low level, and the 3rd NMOS tube is ended, and the grid voltage of the 4th NMOS tube is high level, and the 4th NMOS tube is led
It is logical；Then another complete commutating circuit is formed：First PMOS is ended, the conducting of the second PMOS, the cut-off of the 3rd NMOS tube,
4th NMOS tube is turned on.
In fourth stage dc source, the dc source that the second voltage-stabiliser tube two ends produce is coupled to the first integrated-circuit photoelectric
Isolator (U1) output end and the 4th simulation of integrated circuit electronic switch power；The dc source that first voltage-stabiliser tube two ends produce is given
3rd integrated circuit voltage comparator (U4), the first integrated-circuit photoelectric coupling isolator (U1) input and the second integrated circuit
Optocoupler isolator (U2) input etc. power supply；The DC voltage that 3rd voltage-stabiliser tube two ends produce gives the second integrated circuit light
It is electrically coupled isolator (U2) output end and the 5th simulation of integrated circuit electronic switch power；The resistance of the 4th resistance and the 5th resistance
By input ac power voltage peak and the stable voltage and all collection of the 5th voltage-stabiliser tube, the 6th voltage-stabiliser tube and the 7th voltage-stabiliser tube
Determined into circuit supply port parameter.6th voltage-stabiliser tube voltage stabilizing parameter area is by the first integrated-circuit photoelectric coupling isolator and
The chip pressure voltages such as four simulation of integrated circuit electronic switches are determined；7th voltage-stabiliser tube voltage stabilizing parameter area is by the second integrated circuit light
It is electrically coupled the decision of the chip pressure voltage such as isolator and the 5th simulation of integrated circuit electronic switch；5th voltage-stabiliser tube voltage stabilizing parameter area
By the 3rd integrated circuit voltage comparator and the first integrated-circuit photoelectric coupling isolator and the coupling of the second integrated-circuit photoelectric every
Determined from the chip such as device pressure voltage.Coordinate to export direct current by adjusting the 4th resistance and the 5th resistance parameter size
Supply voltage value and the unmatched problem of IC chip voltage value.
The adjusting method of input ac power voltage range is as follows：
As shown in figure 3, three partial pressures of resistance value sum of second resistance and first resistor, second resistance and 3rd resistor
Than, the input offset voltage of voltage comparator, input ac power voltage peak determine the dutycycle that rectification metal-oxide-semiconductor is turned on, lead to
Normal dutycycle takes 0.95；The resistance of second resistance is smaller, and the peak value of input ac power voltage is bigger；Rectification metal-oxide-semiconductor it is resistance to
Pressure value is higher, and input AC supply voltage scope is wider.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appending claims and its equivalent thereof.
Claims (3)
1. a kind of rail vehicle low-loss rectification circuit, including first order rectification circuit, second level voltage over zero detection machine
Structure, third level drive control mechanism and fourth stage dc source, it is characterised in that first order rectification circuit is electric with the second level respectively
Press through the connection of zero point testing agency, third level drive control mechanism and fourth stage dc source, the detection of second level voltage over zero
Mechanism is connected with third level drive control mechanism, fourth stage dc source respectively, and third level drive control mechanism is straight with the fourth stage
Stream power supply connection；And first order rectification circuit include byThe bridge rectifier of pipe and gate bias resistor composition, second
Step voltage zero-crossing examination mechanism includes supply voltage amplitude limiter and generating positive and negative voltage comparator, third level drive control mechanism
Including optocoupler isolator and simulant electronic switch, fourth stage dc source includes the voltage stabilizing electricity being made up of resistance and voltage-stabiliser tube
Source.
2. a kind of rail vehicle low-loss rectification circuit according to claim 1, it is characterised in that each part
Concrete structure is as follows：
Each part concrete structure is as follows：
The first order rectification circuit includes firstPipe, secondPipe, the 3rdPipe, the 4thPipe, the 12nd
Resistance, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance and the tenth
Nine resistance, wherein, first4th pin, the 4th of pipeFirst pin of pipe connects with input ac power live wire respectively
Connect, the 4th pin, the 3rd of the second PMOSFirst pin of pipe is connected with input ac power zero line respectively, and first
3rd pin of pipe and secondAs output DC power anode, the 3rd after the 3rd pin connection of pipeThe crus secunda of pipe
With the 4thAs output DC power cathode after the crus secunda connection of pipe；One end and first of 16th resistance
The first pin connection of pipe, the other end of the 16th resistance is connected the 4th simulation of integrated circuit electronic cutting with one end of the 12nd resistance
The first pin for closing, the other end connection output DC power anode of the 12nd resistance；One end and second of 17th resistanceThe first pin connection of pipe, the other end of the 17th device resistance and one end of the 13rd resistance are connected to the 4th integrated circuit
3rd pin of simulant electronic switch, the other end connection output DC power anode of the 13rd resistance；One end of 18th resistance,
One end of 14th resistance is respectively with the 3rdThe 3rd pin connection of pipe, the other end and the 5th integrated electricity of the 18th resistance
The 3rd pin connection of road electronic analog swtich, the other end of the 14th resistance is connected with output DC power cathode；19th electricity
One end of resistance, one end of the 15th resistance are respectively with the 4thPipe the 3rd pin connection, the other end of the 19th resistance with
The first pin connection of the 5th simulation of integrated circuit electronic switch, the other end and the output DC power cathode of the 15th resistance connect
Connect；
Second level voltage over zero testing agency includes the 3rd integrated circuit voltage comparator, first resistor, second resistance, the 3rd
First diode, the second diode, the three or two of resistance, the first electric capacity, the second electric capacity and composition supply voltage amplitude limiter
Pole pipe, the 4th diode, the 8th voltage-stabiliser tube, the 9th voltage-stabiliser tube, wherein, the anode of the 8th voltage-stabiliser tube and the anode of the 9th voltage-stabiliser tube
Connection, the second electric capacity is in parallel with second resistance, and the negative electrode of the 9th voltage-stabiliser tube, one end of the second electric capacity, one end of second resistance,
The anode of one end of first resistor, the negative electrode of the first diode and the second diode jointly after connection respectively with the 3rd integrated circuit
The inverting input crus secunda of voltage comparator, the connection of the pin of in-phase input end the 5th；The negative electrode of the 4th voltage-stabiliser tube, the second electric capacity
The anode of the other end, the other end of second resistance, one end of 3rd resistor, the negative electrode of the 4th diode and the 3rd diode is common
The pin of in-phase input end the 3rd, the pin of inverting input the 6th after connection respectively with the 3rd integrated circuit voltage comparator are connected；The
The other end connection input ac power live wire of one resistance, the other end connection input ac power zero line of 3rd resistor, first
Anode of the anode of the anode of diode and the 4th diode respectively with the first voltage-stabiliser tube is connected, the negative electrode of the second diode and
The negative electrode of three diodes connects the negative electrode of the first voltage-stabiliser tube respectively；The power end octal of the 3rd integrated circuit voltage comparator with
Negative electrode again with the first voltage-stabiliser tube is connected after one end connection of the first electric capacity, the earth terminal of the 3rd integrated circuit voltage comparator the
Anode again with the first voltage-stabiliser tube is connected after four pin are connected with the other end of the first electric capacity, the 3rd integrated circuit voltage comparator
The pin of output end first connect the first integrated-circuit photoelectric coupling isolator the first pin, the 3rd integrated circuit voltage comparator it is defeated
Go out the first pin that the 7th pin of end connects the second integrated-circuit photoelectric coupling isolator；
The third level drive control mechanism includes that the first integrated-circuit photoelectric coupling isolator, the second integrated-circuit photoelectric are coupled
Isolator, the 4th simulation of integrated circuit electronic switch, the 5th simulation of integrated circuit electronic switch, the 8th resistance, the 9th resistance,
Ten resistance, the 11st resistance, the 5th electric capacity and the 6th electric capacity, wherein, the first integrated-circuit photoelectric coupling isolator input
The first pin again with the 3rd integrated circuit voltage comparator output terminal is connected after first pin is connected with one end of the 8th resistance, and first
The crus secunda of integrated-circuit photoelectric coupling isolator input is connected with the 5th voltage stabilizing tube anode；Second integrated-circuit photoelectric is coupled
First pin of isolator input be connected with one end of the 9th resistance after again with the 3rd integrated circuit voltage comparator output terminal
7th pin is connected, and the crus secunda of the second integrated-circuit photoelectric coupling isolator input is connected with the 5th voltage stabilizing tube anode, and the 8th
The other end of resistance, the other end of the 9th resistance are connected with the 5th voltage stabilizing tube cathode respectively；First integrated-circuit photoelectric coupling every
From the 4th pin of device output end be connected with one end of the tenth resistance after again with the 4th simulation of integrated circuit electronic switch input
6th pin is connected, and the 3rd pin of the first integrated-circuit photoelectric coupling isolator output end is connected with the 6th voltage stabilizing tube anode；Second
4th pin of integrated-circuit photoelectric coupling isolator output end be connected with one end of the 11st resistance after again with the 5th integrated circuit
The 6th pin connection of simulant electronic switch input, the 3rd pin and the 7th of the second integrated-circuit photoelectric coupling isolator output end
Voltage stabilizing tube anode is connected；The other end of the tenth resistance, one end of the 6th electric capacity and the 6th voltage stabilizing tube cathode are connected to a bit, and the 6th
The other end of electric capacity is connected with the 6th voltage stabilizing tube anode；The other end of the 11st resistance, one end of the 5th electric capacity and the 7th voltage stabilizing
Tube cathode is connected to a bit, and the other end of the 5th electric capacity is connected with the 7th voltage stabilizing tube anode；
The fourth stage dc source includes the 4th resistance, the 5th resistance, the 3rd electric capacity, the 4th electric capacity, the 7th electric capacity, the 8th electricity
Appearance, the 9th electric capacity, the 5th voltage-stabiliser tube, the 6th voltage-stabiliser tube and the 7th voltage-stabiliser tube, wherein, the 4th resistance one end is positive with the 6th voltage-stabiliser tube
Pole connects, and the other end is connected with the 5th voltage stabilizing tube cathode；5th resistance one end is connected with the 5th voltage stabilizing tube anode, the other end and
Seven voltage stabilizing tube cathodes are connected；3rd electric capacity one end is connected with the 6th voltage stabilizing tube cathode, and the other end is connected with the 6th voltage stabilizing tube anode；
4th electric capacity one end is connected with the 7th voltage stabilizing tube cathode, and the other end is connected with the 7th voltage stabilizing tube anode；7th electric capacity is steady with the 5th
Pressure pipe is in parallel；8th electric capacity is in parallel with the 6th voltage-stabiliser tube；9th electric capacity is in parallel with the 7th voltage-stabiliser tube.
3. a kind of rail vehicle low-loss rectification circuit according to claim 2, it is characterised in that fourPipe
Parasitic diode, and four parasitic diode composition bridge rectifiers are respectively arranged between drain electrode and source electrode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225460.5U CN206259867U (en) | 2016-11-15 | 2016-11-15 | A kind of rail vehicle low-loss rectification circuit |
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|---|---|---|---|
| CN201621225460.5U CN206259867U (en) | 2016-11-15 | 2016-11-15 | A kind of rail vehicle low-loss rectification circuit |
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| CN206259867U true CN206259867U (en) | 2017-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474546A (en) * | 2019-08-23 | 2019-11-19 | 深圳市泛海数据科技有限公司 | A kind of rectification circuit based on field-effect tube |
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2016
- 2016-11-15 CN CN201621225460.5U patent/CN206259867U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474546A (en) * | 2019-08-23 | 2019-11-19 | 深圳市泛海数据科技有限公司 | A kind of rectification circuit based on field-effect tube |
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