CN109104084A - A kind of driving device for step-up/step-down circuit - Google Patents
A kind of driving device for step-up/step-down circuit Download PDFInfo
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- CN109104084A CN109104084A CN201811157304.3A CN201811157304A CN109104084A CN 109104084 A CN109104084 A CN 109104084A CN 201811157304 A CN201811157304 A CN 201811157304A CN 109104084 A CN109104084 A CN 109104084A
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- 230000003137 locomotive effect Effects 0.000 claims abstract description 26
- 230000007812 deficiency Effects 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 9
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 9
- 230000004044 response Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of driving device for step-up/step-down circuit, including being risen for accessing control, double pwm pulses of decompression simultaneously export wherein all the way to the PWM output module of step-up/step-down circuit, PWM output module includes exporting branch for first of pwm pulse needed for output buck, for exporting the second output branch of the required pwm pulse that boosts, it further include the first control module being connect respectively with PWM output module, second control module, first control module receives external switching command, the first output branch of control block or the second output branch, the operating state signal of second control module access locomotive, control the first output branch of block or second output branch in traction working condition and haulage capacity deficiency or when damped condition need to recover energy.The present invention has many advantages, such as that structure is simple, at low cost, pwm pulse switch speed is fast and energy recovery efficiency is high.
Description
Technical field
The present invention relates to energy mix locomotive power supply technical fields more particularly to a kind of suitable for energy mix locomotive
Driving device for step-up/step-down circuit.
Background technique
Buck DC/DC circuit is that boosting, buck functionality can be realized by circuit kit structure, such as typical
Buck-Boost circuit sends pwm pulse and gives Buck circuit, execute drop by Buck circuit when work is Buck circuit-mode
Function is pressed, when work is Boost circuit mode, pwm pulse is sent to Boost circuit, boosting function is executed by Boost circuit
Can, the switching of Buck circuit, Boost circuit is realized by switching pwm pulse.
In the energy mixs locomotive applications such as bavin electricity composite locomotive, energy mix locomotive is mainly replaced with battery traditional
Fuel oil is the energy, can largely reduce the dependence to fuel resource, and battery and its charge and discharge power technology also become
Restrict the key of technology development.It is powered by battery with DC-DC module in composite locomotive, is connect by DC-DC module jointly
Enter DC power supply, be powered after being converted and be stored in battery, or discharged by battery, passes through DC-DC
Module progress, which can recycle, can provide supplement energy, and in traction working condition, due to needing a large amount of haulage capacity, if access electricity
When source is not enough to provide haulage capacity, then needs to control switching battery and discharge, insufficient energy is supplemented by DC-DC module
Amount, and in damped condition, need to control switching battery and charge, can be recycled by DC-DC module progress, i.e., it is mixed
When conjunction locomotive is braked and drawn, need to carry out the switching between the accumulator cell charging and discharging of DC-DC, namely execute pwm pulse
Switching.
The control circuit of typical buck DC/DC circuit as shown in Figure 1, include step-up/step-down circuit major loop, driving plate,
Control panel and master controller, wherein driving plate mainly includes selection circuit, push-pull circuit, the power amplification electricity of driving pulse
Road, dipulse interlock circuit and various corresponding protection circuits；Control panel mainly includes two-way high speed pwm pulse generative circuit,
The output constant pressure and flow circuit of complete machine low-pressure side, the high-pressure side of complete machine export constant pressure and flow circuit, and control panel receives master controller
Command signal circuit, it is various protection circuits and each input and output voltage and current given circuits；Master controller be used for it is outer
The controller of portion's client is communicated, receive the control command execution from client assign corresponding signal to control panel and
Driving plate executes corresponding order by control panel and driving plate and reaches the associated electrical parameters for meeting client and needing.
When above-mentioned buck DC/DC circuit realizes pwm pulse switching, all phases of reception client are passed through by master controller
To induction signal, to assign instruction to control panel, control panel generates the PWM waveform needed by voluntarily generating pwm circuit, by phase
Corresponding PWM wave is sent to driving plate, while master controller receives control to driving plate by the corresponding signal of reception client
The PWM wave of making sheet carries out logic selection processing, by interlock circuit to re-sending to after pwm signal interlock process pair after the completion of processing
The control electrode for the power semiconductor answered, to achieve the purpose that control power semiconductor high-speed switch.
But above-mentioned buck DC/DC circuit, client signal is detected since master controller must be passed through, then under
Up to corresponding control and driving, need longer software algorithm operation time that can complete handoff response, response speed is slow,
And when being applied in such as bavin electricity composite locomotive application, the haulage capacity provided when traction working condition is insufficient and needs to carry out
When pwm pulse switches, due to that cannot timely respond to, battery discharge performance when locomotive is drawn will affect；And complete machine is being transported
Transient energy is big when executing damped condition when row, and voltage can rise moment, and the feature that the duration is short, since master controller needs
Software algorithm operation is carried out, response speed is slow, and when on instruction issuing to final power semiconductor, the energy of moment is
Loss, can not effectively carry out energy regenerating, so that energy recovery efficiency is not high.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
The driving device for step-up/step-down circuit that kind structure is simple, at low cost, PWM switch speed is fast and capacity usage ratio is high.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of driving device for step-up/step-down circuit is used in energy mix locomotive, including for accessing control ascending, descending
Double pwm pulses of pressure simultaneously export wherein all the way to the PWM output module of the step-up/step-down circuit, and the PWM output module includes
The first output branch for being depressured required pwm pulse, the second output branch for exporting the required pwm pulse that boosts, are also wrapped
The first control module connecting respectively with the PWM output module, the second control module are included, first control module receives outer
Portion's switching command, the control block first output branch or the second output branch, second control module access machine
Institute is blocked in the operating state signal of vehicle, control in traction working condition and haulage capacity deficiency or when damped condition need to recover energy
State the first output branch or the second output branch.
As a further improvement of the present invention: second control module includes that the first starting control interconnected is single
Member, the first driving unit, the first starting control unit are respectively connected to traction state signal, on-position signal and described
Step-up/step-down circuit mesohigh side voltage signal is judged, is exported control instruction and is driven to first driving unit, described first
Moving cell receives control instruction, the driving block first output branch or the second output branch.
As a further improvement of the present invention: the first starting control unit includes access circuit interconnected, sentences
Deenergizing and control instruction generative circuit, the access circuit be respectively connected to traction state signal, on-position signal and
The high side voltage signal is exported to the decision circuitry, and it is to have that the decision circuitry, which determines the traction state signal,
Effect and when the high side voltage signal is less than specified threshold, the control instruction generative circuit generates the first control instruction, with
The first driving unit block the first output branch is controlled, the decision circuitry determines the on-position signal and is
When the effective and described high side voltage signal is greater than specified threshold, the control instruction generative circuit generates the second control instruction,
To control the first driving unit driving block the second output branch.
As a further improvement of the present invention: first driving unit includes for driving block the first output branch
First driving switch on road, and for driving the second driving switch for blocking the second output branch.
As a further improvement of the present invention: being additionally provided with shielding between first control module, the second control module
Switch module when second control module starts, turns off first control module by the mask switch module.
As a further improvement of the present invention: the mask switch module include control switch unit interconnected and
Trigger unit, when second control module starts, the control switch unit is opened in control, is controlled the trigger unit and is sent
Trigger pulse is to first control module to turn off first control module.
As a further improvement of the present invention: first control module includes the second starting control unit interconnected
And second driving unit, the second starting control unit access carry out boost or depressurization for controlling the step-up/step-down circuit
External switching command, send control instruction to second driving unit, second driving unit receives control instruction, control
The system block first output branch or the second output branch.
As a further improvement of the present invention: further including the state feedback module being connect with the PWM output module, be used for
The state of pwm pulse needed for the PWM output module is exported boost or depressurization is fed back.
As a further improvement of the present invention: being interlocking between the first output branch and the second output branch.
As a further improvement of the present invention: the step-up/step-down circuit is Bidirectional up-down volt circuit.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention is used for the driving device of step-up/step-down circuit, by the way that the first control module, the second control mould are arranged simultaneously
Block is controlled the pwm pulse carried out under nominal situation by the first control module and switched, controlled by the second control module in traction working condition
And pwm pulse switching is carried out when haulage capacity deficiency or when damped condition need to recover energy, need not move through the letter of master controller
Number transmission, pwm pulse switching fast response time, can in time, efficiently execute pwm pulse switching, it is mixed so as to realize
Close energy locomotive in switching at high speed between DC-DC and accumulator cell charging and discharging, effectively improve energy recovery efficiency when braking with
And battery discharge performance when traction, promote the operational efficiency and performance of vehicle.
2, the present invention is used for the driving device of step-up/step-down circuit, when carrying out the high speed PWM switching under traction working condition, when cutting
Traction working condition is able to maintain that when operating in traction working condition before changing, it, can be rapidly by drop when operating in decompression operating condition before the handover
High speed PWM shutdown is pressed, while rapidly opening boosting high speed PWM, fast response time can greatly shorten switching time, when removing
When pin traction signal or high pressure voltage on line side rise to setting value, switch logic can be automatically exited from, before being restored to switching
Operating condition.
3, the present invention is used for the driving device of step-up/step-down circuit, when carrying out the high speed PWM switching under damped condition, when cutting
Original operating condition is maintained when operating in decompression operating condition before changing, when operating in boosting operating condition before the handover, will can be risen rapidly
High speed PWM shutdown is pressed, while rapidly opening decompression high speed PWM, fast response time can greatly shorten switching time, when removing
When pin brake signal or high pressure voltage on line side drop to setting value, switch logic can be automatically exited from, before being restored to switching
Operating condition.
4, the present invention is used for the driving device of step-up/step-down circuit, further by external traction signal, outer brake letter
Number detection, and pressure-increasning state signal and decompression status signal and internal gate circuit are controlled, can master controller not
Before carrying out any select command to two states signal, in time, effectively control high speed pwm pulse switches, when switching operating condition
After exiting, it can also continue to that the operating condition before switching is kept to continue to run, and without changing other logic control constructs.
Detailed description of the invention
Fig. 1 is the principle schematic diagram for the control system that step-up/step-down circuit switches in the composite locomotive of the prior art.
Fig. 2 is structural schematic diagram of the present embodiment for the driving device of step-up/step-down circuit.
Fig. 3 is the present embodiment for realizing the principle schematic diagram of step-up/step-down circuit switching in energy mix locomotive.
Fig. 4 is the structural schematic diagram in concrete application embodiment of the present invention for the driving device of step-up/step-down circuit.
Marginal data: 1, PWM output module；11, the first output branch；12, the second output branch；2, the first control mould
Block；21, the second starting control unit；22, the second driving unit；3, the second control module；31, the first starting control unit；
311, circuit is accessed；312, decision circuitry；313, control instruction generative circuit；32, the first driving unit；4, mask switch mould
Block；5, state feedback module.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
As shown in Figure 2,3, the present embodiment is used for the driving device of step-up/step-down circuit, is used in energy mix locomotive, including
For accessing double pwm pulses of control ascending, descending pressure and exporting wherein all the way to the PWM output module 1 of step-up/step-down circuit, PWM is defeated
Module 1 includes for being depressured the first output branch 11 of required pwm pulse, for second of pwm pulse needed for exporting boosting out
Branch 12 is exported, further includes the first control module 2 being connect respectively with PWM output module 1, the second control module 3, the first control
Module 2 receives external switching command, PWM needed for the first output branch 11 of control block or the second output branch 12 are exported with switching
Pulse, the second control module 3 access the operating state signal of locomotive, and control is in traction working condition and haulage capacity deficiency or is making
The first output branch 11 of block or the second output branch 12, pwm pulse needed for being exported with switching when condition of starting building need to recover energy.
The above-mentioned driving device of the present embodiment exports branch 12 by the first output branch 11, second in PWM output module 1
Pwm pulse needed for boosting, decompression being exported respectively, while the first control module 2, the second control module 3 are set, by first
Control module 2 receives external control instruction, and control carries out pwm pulse switching, i.e., the pwm pulse that control carries out under nominal situation is cut
It changes, operating state signal is received by the second control module 3, is controlled in traction working condition and haulage capacity deficiency or in damped condition
Pwm pulse switching is carried out when need to recover energy, the signal due to needing not move through master controller transmits, the response of pwm pulse switching
Speed is fast, and when locomotive is braked, traction working condition needs to carry out pwm pulse switching, can be realized in energy mix locomotive
Switching at high speed between DC-DC and accumulator cell charging and discharging, electric power storage when effectively improving the energy recovery efficiency and traction when braking
Tank discharge performance promotes the operational efficiency and performance of vehicle.
As shown in figure 3, the present embodiment driving device directly receives the outside of pwm pulse switching by the first control module 2
The operating state signal of control command, the high-side signal that step-up/step-down circuit is received by the second control module 3 and locomotive, first
When control module 2 receives external control command, control export required pwm pulse all the way to the major loop of step-up/step-down circuit, the
Two control modules 3 receive operating state signal and high-side signal is judged, determine and are in traction working condition and lead
When drawing energy deficiency or when damped condition need to recover energy, pwm pulse needed for exporting all the way is directly controlled to step-up/step-down circuit
Major loop.
It is interlocking between the first output branch 11 and the second output branch 12 in the present embodiment, i.e., the first output branch 11
Interlock circuit is used with the second output branch 12, the second output of block branch 12 when the first output branch 11 starts, when second
The first output of block branch 11 when branch 12 starts is exported, guarantee is only capable of exporting in double pwm pulses all the way.
In the present embodiment, the second control module 3 includes the first starting control unit 31, the first driving unit interconnected
32, the first starting control unit 31 is respectively connected to traction state signal, on-position signal and step-up/step-down circuit mesohigh side
Voltage signal is judged, exports control instruction to the first driving unit 32, the first driving unit 32 receives control instruction, and drives
Dynamic block first exports branch 11 or the second output branch 12 and controls pulse with the PWM on road needed for output.Specific first starting control
When the access of unit 31 traction state signal, on-position signal and high side voltage signal processed are judged, led when being judged as
Draw status signal effectively and when high side voltage signal is less than specified threshold, that is, correspond in traction working condition and haulage capacity not
Foot exports control instruction to the first driving unit 32, by the first driving unit 32 driving the first output branch 11 of block to export
Pwm signal needed for boosting, when determining on-position signal effectively and high side voltage signal is greater than specified threshold, i.e., pair
It should be and need to carry out pwm pulse switching in damped condition, export control instruction to the first driving unit 32, by the first driving list
32 driving block the second output branch 12 of member is with pwm signal needed for output buck.
In the present embodiment, the first starting control unit 31 specifically includes access circuit 311 interconnected, decision circuitry
312 and control instruction generative circuit 313, access circuit 311 is respectively connected to traction state signal, on-position signal and liter
Reduction voltage circuit mesohigh side voltage signal is exported to decision circuitry 312, and it is to have that decision circuitry 312, which determines traction state signal,
Effect and when high side voltage signal is less than specified threshold, control instruction generative circuit 313 generates the first control instruction, to control the
One driving unit 32 driving block the first output branch 11, so that pwm signal needed for boosting is exported to step-up/step-down circuit, so that
Step-up/step-down circuit works in boost mode to supplement insufficient haulage capacity；When decision circuitry 312 determines on-position signal
When being greater than specified threshold for effective and high side voltage signal, control instruction generative circuit 313 generates the second control instruction, with control
The first driving unit 32 driving block the second output branch 12 is made, so that pwm signal needed for output buck is to step-up/step-down circuit,
So that step-up/step-down circuit works in voltage reduction module to realize energy regenerating.
In the present embodiment, the first driving unit 32 includes for driving the first driving of block the first output branch 11 to open
It closes, and the second driving switch for driving block the second output branch 12, wherein when the first driving switch is opened, block
The output of first output branch 11, export branch 12 by second and export and be used to control the pwm pulse to boost to step-up/step-down circuit, when
When second driving switch is opened, the output of block the second output branch 12, by the first output output of branch 11 for controlling decompression
Pwm pulse.
As shown in figure 4, traction state signal, on-position signal are high level or low electricity in concrete application embodiment
Flat, wherein high level corresponds to effective status, and low level corresponds to invalid state, such as when traction state signal is high level,
It corresponds to locomotive and is in traction working condition, when the high side voltage signal of step-up/step-down circuit is less than preset threshold, high side voltage
Status signal is high level, is otherwise low level, specifically can be by by the setting value of preset threshold and the high-pressure side detected
The signal of voltage signal is respectively connected to be compared in comparator, is believed by the output of comparator as the state of high side voltage
Number, when comparator output is high level, corresponding is that high side voltage signal is greater than preset threshold, otherwise corresponds to be less than pre-
If threshold value；Accessing circuit 311 includes multiple access branch, is respectively connected to traction state signal, on-position signal and high pressure
The status signal of side voltage, every road access leg access corresponding signal, decision circuitry by fiber optic receiver and diode
312 and control instruction generative circuit 313 realized using two AND gate circuits (AND gate circuit 1#, AND gate circuit 2#), with door electricity
Road 1# is respectively connected to the status signal of on-position signal, high side voltage, AND gate circuit 2# be respectively connected to traction state signal,
The status signal of high side voltage；First driving unit 32 include the first driving switch Q9 and the second driving switch Q8, when with
It when gate circuit 1# output is high level, corresponds to locomotive and be in damped condition need to carry out energy regenerating, switch Q8 is opened in driving, envelope
The output of lock the second output branch 12, the pwm pulse as needed for the first output 11 output buck of branch；When AND gate circuit 2# is exported
When for high level, correspond to that locomotive is in traction working condition and haulage capacity is insufficient, it is open-minded that switch Q9 is opened in driving, and it is defeated to block first
The output of out branch 11, the pwm pulse needed for the second output output boosting of branch 12.
The second control module of the present embodiment 3 further access machine system OK signal, machine system OK signal be system just
Chang Shi, the system normal instructions that the self-test signal of locomotive internal controller can issue, the second control module 3 in traction working condition and
When haulage capacity deficiency or when damped condition need to recover energy, while when receiving machine system OK signal, control block the
One output branch 11 or the second output branch 12, to ensure switching when executing traction, damped condition when system is normal.Such as figure
Shown in 4, AND gate circuit 1#, AND gate circuit 2# have also been respectively connected to machine system OK signal, when system is normal condition, complete machine
System OK signal is high level, is otherwise low level.It is understood that the second control module 3 can also be according to actual needs
Other status signals are accessed, to further increase performance of handoffs.
In the present embodiment, it is additionally provided with mask switch module 4 between the first control module 2, the second control module 3, second
When control module 3 starts, the first control module 2 is turned off by mask switch module 4.I.e. under nominal situation, the second control module 3
Control executes switching when receiving external switching command, when that need to be switched in traction or damped condition, the first control of shielding
The output of molding block 2 executes switching by the control of the second control module 3, so that in traction, damped condition and pwm pulse is needed to switch
When, it can fast and accurately carry out pwm pulse switching.
In the present embodiment, mask switch module 4 includes control switch unit interconnected and trigger unit, the second control
When molding block 3 starts, control switch unit is opened in control, control trigger unit send trigger pulse to the first control module 2 with
Turn off the first control module 2.
In the present embodiment, the first control module 2 includes the second starting control unit 21 interconnected and the second driving
Unit 22, the second starting control unit 21 access the status signal of boosting, decompression in step-up/step-down circuit, send control instruction to the
Two driving units 22, the second driving unit 22 receive control instruction, and drive the first output branch 11 or the second output branch 12
It exports PWM and controls pulse.
As shown in figure 4, the second starting control unit 21 is realized using gate circuit, gate circuit in concrete application embodiment
Input terminal receive by fiber optic receiver, diode access external control instruction (buck status signal, boost state letter
Number), the second driving unit 22 includes switch Q1 and switch Q2, and it is defeated to respectively correspond driving block the first output branch 11, second
Out branch 12.
As shown in figure 4, in the present embodiment mask switch module 4 control switch unit specifically include setting first driving open
It closes the control switch Q10 of Q9 output end and the control switch Q11 of the second driving switch Q8 output end is set, trigger unit is adopted
With OR circuit, the input terminal of OR circuit is separately connected control switch Q10, control switch Q11, and output end is respectively connected to
Driving switch Q1, Q2 in one control module 2, when the first driving switch Q9 or the second driving switch Q8 is opened, correspondence opens control
Make switch Q10 or control switch Q11, driving switch Q1, Q2 in control the first control module 2 of shutdown.Mask switch module 4 is specific
It further include control switch Q4, Q7 being arranged in the second control module 3 and the first control module 2 between gate output, the
Two control modules 3 start when, control shutdown switch Q4, Q7 so that turn off the first control module 2 in gate circuit output, with into
One step guarantees effective shutdown of the first control module 2 output.
Further include the state feedback module 5 being connect with PWM output module 1 in the present embodiment, is used for PWM output module 1
The state of pwm pulse needed for output boost or depressurization is fed back.It nominal situation and is cut in the logic drawn and braked
After changing, in order to enable master controller timely to know the operating condition of complete machine operation, the present embodiment believes the operating condition of driving device
Number master controller is timely fed back to, as shown in figure 4, will be defeated specifically by OR circuit is constituted by D14, D15 and U7 circuit
It boosts out, be depressured the status signal feedback output of PWM to master controller.
In the present embodiment, step-up/step-down circuit can be Bidirectional up-down volt circuit, that is, can be applied to such as two-way Buck-Boost
To carry out pwm pulse switching in the driving circuit of circuit, naturally it is also possible to be applied to other lifting piezoelectricity of double pwm pulses
Lu Zhong.
As shown in figure 3, the present embodiment realizes that control system used by the control of step-up/step-down circuit is specific in composite locomotive
Including major loop, above-mentioned driving device, control panel and master controller, major loop specifically includes such as IGB, MOSFET, thyristor
High-power equal semiconductor devices, magnetic device, high-voltage large-capacity capacitor, high voltage connector, voltage sensor and current sensor
Equal devices, constitute buck major loop, such as typical Buck-Boost circuit specifically can be used；Driving device also includes, pushes away
Draw circuit, power amplification circuit and various corresponding protection circuits etc.；Control panel includes two-way high speed pwm pulse generative circuit,
The high-pressure side of the output constant pressure and flow circuit of complete machine low-pressure side, complete machine exports constant pressure and flow circuit, receives the instruction of master controller
Signal circuit, the voltage and current given circuit of various protection circuits and each input and output, output voltage electric current pass through control panel
Internal PID circuit carries out the adjust automatically of effective high speed, can stabilize the output voltage electric current；Master controller is responsible for and outside visitor
The controller at family end is communicated, and is received the control command execution from client and is assigned corresponding signal to control panel and driving
Plate executes corresponding order by control panel and driving plate and reaches the associated electrical parameters for meeting client and needing.
Step-up/step-down circuit is specially Buck-Boost circuit in concrete application embodiment, and driving device setting is in a driving
On plate, driving plate structure as shown in figure 4, have in driving plate BUCK status signal, BOOST status signal, machine system OK signal,
External traction state signal, outer brake status signal, high pressure net side signal, high pressure net side comparator reference voltage setting letter
Number, status feedback signal, buck high speed pwm signal and boost high speed pwm signal, each operating condition handoff procedure specifically:
In normal conditions, master controller control buck status signal and boost status signal, when buck status signal is given
Periodically, Q1 is open-minded, and the high speed pwm signal of boost IGBT is gone in shutdown, and when boost status signal is to timing, Q2 is open-minded, shutdown
Go to the high speed pwm signal of buck IGBT；XOR gate processing control buck high speed is carried out to two signals by gate circuit simultaneously
PWM and boost high speed pwm signal, when buck status signal and boost status signal are simultaneously high level or are simultaneously low electricity
Usually, D3 diode exports a high level, keeps Q4 and Q7 all open-minded, all blocks two-way pwm signal, effectively controls two
Road pwm signal guarantees the safe and reliable work of complete machine.
Switching control under traction working condition: when receiving machine system OK signal, detect the external traction letter sent
Number when, while by high pressure net side signal detection, when high pressure voltage on line side is lower than high pressure net side comparator reference voltage setting letter
Number setting value when, the switching that high speed PWM can be directly rapidly performed by with logic circuit inside AND gate circuit 2#, AND gate circuit
2# exports the door electricity that high level control Q9 and Q5 is quickly open-minded, blocks buck high speed pwm signal, shields buck/boost state
Road output signal, Q4 and Q7 are effectively turned off, while AND gate circuit 2 exports high level and opens Q10, and signal is closed by OR circuit
Shield buck status signal and boost status signal, turns off Q1, Q2 effectively.
High speed PWM switching under the above-mentioned achievable traction working condition of driving device, entire switching is woth no need to again by master controller
Any interference and control are carried out, when complete machine operates in traction working condition in itself before the handover, high speed PWM can maintain original fortune
Row operating condition, continues traction working condition, can be with by above-mentioned driving device when complete machine operates in decompression operating condition in itself before the handover
Decompression high speed PWM is turned off rapidly, while rapidly opening boosting high speed PWM, power semiconductor switch is directly controlled, responds speed
Degree is fast, is controlled and is switched by master controller compared to tradition, can greatly shorten switching time；When client de-asserts traction signal or
When high pressure voltage on line side rises to setting value, above-mentioned driving device will automatically exit from switch logic, before complete machine is restored to switching
Logic operating condition is again introduced into the switching work when until command logic and high pressure voltage on line side dropping to certain setting value next time
Condition.
Switching control under damped condition: when receiving machine system OK signal and detect the external braking sent
It is interior when being detected simultaneously by setting value of the high pressure voltage on line side higher than high pressure net side comparator reference voltage setting signal when signal
The AND gate circuit 1# in portion directly can quickly export high level, keep Q8, Q5, Q11 effectively open-minded, close boost high speed respectively
Pwm signal, the gate circuit output signal for closing buck/boost state, Q4, Q7 are effectively turned off, while AND gate circuit 1 exports
High level opens Q11, and signal closes screen buck status signal and boost status signal by OR circuit, closes Q1, Q2 effectively
It is disconnected.
Above-mentioned driving device can complete the switching of the high speed PWM under damped condition, woth no need to be appointed again by master controller
What interference and control, when complete machine operates in decompression operating condition in itself before the handover, high speed PWM can maintain original operation work
Condition continues to be depressured operating condition, can be rapid by above-mentioned driving device when complete machine operates in boosting operating condition in itself before the handover
Boosting high speed PWM is turned off, while rapidly opening decompression high speed PWM, directly controls power semiconductor switch, response speed
Fastly, switch compared to traditional controlled by master controller, switching time can be greatly shortened；When client de-asserts brake signal or
When high pressure voltage on line side drops to setting value, above-mentioned driving device general who has surrendered automatically exits from switch logic, before complete machine is restored to switching
Logic operating condition, until when command logic and high pressure voltage on line side are increased to certain setting value next time, is again introduced into the switching work
Condition.
The present embodiment by the detection to external traction signal, outer brake signal, and to buck status signal and
Boost status signal and the control of internal gate circuit, can not carry out any selection in master controller to two states signal
Before order, in time, effectively control high speed pwm pulse switches, and after switching operating condition exits, can also continue to before keeping switching
Operating condition continues to run, and without changing other logic control constructs.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.Although of the invention
It has been disclosed in a preferred embodiment above, however, it is not intended to limit the invention.Therefore, all without departing from technical solution of the present invention
Content, technical spirit any simple modifications, equivalents, and modifications made to the above embodiment, should all fall according to the present invention
In the range of technical solution of the present invention protection.
Claims (10)
1. a kind of driving device for step-up/step-down circuit is used in energy mix locomotive, including for accessing control ascending, descending pressure
Double pwm pulses and export wherein all the way give the step-up/step-down circuit PWM output module (1), the PWM output module (1)
Including the first output branch (11) for being depressured required pwm pulse, the second output branch for exporting the required pwm pulse that boosts
Road (12), it is characterised in that: further include the first control module (2) being connect respectively with the PWM output module (1), the second control
Molding block (3), first control module (2) receive external switching command, control block first output branch (11) or
Second output branch (12), the operating state signal of the second control module (3) access locomotive, controls in traction working condition
And first output branch (11) or described second defeated is blocked when haulage capacity deficiency or when damped condition need to recover energy
Out branch (12).
2. the driving device according to claim 1 for step-up/step-down circuit, it is characterised in that: second control module
It (3) include the first starting interconnected control unit (31), the first driving unit (32), the first starting control unit
(31) traction state signal, on-position signal and step-up/step-down circuit mesohigh side voltage signal is respectively connected to be sentenced
It is disconnected, control instruction is exported to first driving unit (32), and first driving unit (32) receives control instruction, driving envelope
Lock first output branch (11) or second output branch (12).
3. the driving device according to claim 2 for step-up/step-down circuit, it is characterised in that: the first starting control
Unit (31) includes access circuit (311), decision circuitry (312) and control instruction generative circuit (313) interconnected, institute
State access circuit (311) be respectively connected to traction state signal, on-position signal and the high side voltage signal, export to
The decision circuitry (312), it is the effective and described high-pressure side electricity that the decision circuitry (312), which determines the traction state signal,
When signal being pressed to be less than specified threshold, the control instruction generative circuit (313) generates the first control instruction, to control described first
Driving unit (32) block first output branch (11), the decision circuitry (312) determine the on-position signal
When being greater than specified threshold for the effective and described high side voltage signal, the control instruction generative circuit (313) generates the second control
System instruction, to control the first driving unit (32) driving block second output branch (12).
4. the driving device according to claim 3 for step-up/step-down circuit, it is characterised in that: first driving unit
It (32) include blocking described for drive the first driving switch for blocking first output branch (11), and for driving
Second driving switch of two outputs branch (12).
5. being used for the driving device of step-up/step-down circuit described according to claim 1~any one of 4, it is characterised in that: institute
It states and is additionally provided between the first control module (2), the second control module (3) mask switch module (4), second control module
(3) when starting, first control module (2) is turned off by the mask switch module (4).
6. the driving device according to claim 5 for step-up/step-down circuit, it is characterised in that: the mask switch module
(4) include control switch unit and trigger unit interconnected, when second control module (3) starts, control open-minded
The control switch unit controls the trigger unit and sends trigger pulse to first control module (2) with described in turning off
First control module (2).
7. being used for the driving device of step-up/step-down circuit described according to claim 1~any one of 4, it is characterised in that: institute
Stating the first control module (2) includes the second starting control unit (21) and the second driving unit (22) interconnected, described
Second starting control unit (21) access carries out the external switching command of boost or depressurization, hair for controlling the step-up/step-down circuit
Send control instruction to second driving unit (22), second driving unit (22) receives control instruction, control block institute
State the first output branch (11) or second output branch (12).
8. being used for the driving device of step-up/step-down circuit described according to claim 1~any one of 4, it is characterised in that: also
Including the state feedback module (5) being connect with the PWM output module (1), risen for exporting the PWM output module (1)
Pressure or the state for being depressured required pwm pulse are fed back.
9. being used for the driving device of step-up/step-down circuit described according to claim 1~any one of 4, it is characterised in that: institute
It states between the first output branch (11) and second output branch (12) as interlocking.
10. being used for the driving device of step-up/step-down circuit described according to claim 1~any one of 4, it is characterised in that: institute
Stating step-up/step-down circuit is Bidirectional up-down volt circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811157304.3A CN109104084B (en) | 2018-09-30 | 2018-09-30 | Driving device for buck-boost circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811157304.3A CN109104084B (en) | 2018-09-30 | 2018-09-30 | Driving device for buck-boost circuit |
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| CN109104084A true CN109104084A (en) | 2018-12-28 |
| CN109104084B CN109104084B (en) | 2023-12-01 |
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| CN109104084B (en) | 2023-12-01 |
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