CN109703593A - Operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district - Google Patents
Operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district Download PDFInfo
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- CN109703593A CN109703593A CN201910010650.7A CN201910010650A CN109703593A CN 109703593 A CN109703593 A CN 109703593A CN 201910010650 A CN201910010650 A CN 201910010650A CN 109703593 A CN109703593 A CN 109703593A
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Abstract
The present invention discloses operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district, obtains vehicle in the speed of service curve in the section according to contactless net tramcar operating parameter complex optimum, carries out offline full range optimization；When vehicle, which meets special circumstances actual speed, deviates the reference velocity that optimization obtains, vehicle adjusts strategy by on-line velocity and adjusts car speed with electromechanical brake force optimum allocation measurement.Complex optimum of the present invention obtains vehicle in the speed of service curve in the section, and contactless net railroad vehicle not only reaches on schedule when running by the rate curve, but also energy utilization efficiency highest；When vehicle, which meets special circumstances actual speed, deviates the reference velocity that optimization obtains, vehicle adjusts algorithm by on-line velocity and electronically-controlled pneumatic brake optimum allocation algorithm adjusts car speed, guarantees that vehicle reaches on schedule.
Description
Technical field
The invention belongs to rail battery technology fields, run energy more particularly between a kind of contactless net tramcar whole district
Consume comprehensive optimization method.
Background technique
Nowadays, urban transportation has caused more and more concerns, example due to its pollution, noise and the features such as health
Such as, European bus accounts about the 50-60% of vehicles toatl proportion, but wherein 95% using gasoline as fuel, to environment
Very big influence is caused, tramcar has been built by the investment of more and more cities as efficient, environmental protection, energy-efficient synonym
If having many advantages, such as that freight volume is big, speed is fast, safe.
Since the station spacing of railroad vehicle operation is shorter and station is relatively more, exist in vehicle operation frequent
Starting braking process, improve the capacity usage ratio in vehicle operation to further the features such as embodying automobile energy-saving, environmental protection
Have great importance, improving capacity usage ratio can start in terms of reducing energy loss and improving Brake energy recovery two.
Current tramcar vehicle a large amount of mechanical energy in braking process is braked resistance consumption, only small part quilt
Energy storage absorbs, and not only capacity usage ratio is low but also a large amount of heat is arranged to ambient enviroment, influences environment temperature.Improve tramcar
The vehicle braking energy rate of recovery closely becomes urgent problem.
Summary of the invention
To solve the above-mentioned problems, the invention proposes operation energy consumption synthesis between a kind of contactless net tramcar whole district is excellent
Change method, can guarantee the arrival on schedule of contactless net railroad vehicle, while realize energy utilization efficiency highest.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: run between a kind of contactless net tramcar whole district
Energy consumption comprehensive optimization method, comprising steps of
Vehicle is obtained in the speed of service curve in the section according to contactless net tramcar operating parameter complex optimum, into
The offline full range optimization of row；
When vehicle, which meets special circumstances actual speed, deviates the reference velocity that optimization obtains, vehicle is adjusted by on-line velocity
Strategy adjusts car speed with electromechanical brake force optimum allocation measurement.
Further, the offline full interval Optimization Method: according to vehicle hour, range ability, maximum speed
Limitation, acceleration limitation, vehicular electric machine characteristic curve, energy-storage system maximum charge ability, ancillary equipment and vehicle are transported substantially
Row resistance complex optimum obtains vehicle in the operation curve in the section, determines optimal reference velocity, contactless net railroad vehicle with
The optimal reference velocity operation；It can not only realize that contactless net tramcar reaches on schedule, and energy utilization efficiency highest.
Further, energy consumption includes that traction converter is lost, is unidirectional in contactless net tramcar operational process
The ancillary equipments such as DC/DC loss, traction electric machine loss, running resistance loss, mechanical braking energy consumption, heat dissipation and power supply air-conditioning,
The energy loss of traction and constant velocity stage can be reduced from the aspect of two and improve vehicle by improving vehicle energy utilization rate
The energy regenerating of deboost phase reduces energy loss and improves two aspects of vehicle energy regenerating connecting each other, is indivisible, therefore
Capacity usage ratio is improved, using following methods:
In the offline full interval Optimization Method to contactless net tramcar in the vehicle running traction stage, at the uniform velocity
Stage and deboost phase carry out energy consumption analysis respectively；Further according to vehicle hour t, range ability S, maximum speed limitation
Vmax, acceleration limit amax, vehicular electric machine characteristic curve, energy-storage system maximum charging and discharging capabilities, the basic running resistance of vehicle
And ancillary equipment carries out off-line operation optimization to traction stage, constant velocity stage and deboost phase in operational process respectively respectively,
Time and the distance in each stage are calculated, so that optimization obtains speed of service V；
The optimization method, comprising steps of
S101: t, the uniform velocity V* of setting are required according to distance between sites S and runing time；
S102: pull-in time tq, hauling distance Sq in the traction stage are calculated；
S103: pull-in time tz, hauling distance Sz in the deboost phase are calculated；
S104: calculating constant velocity stage's remaining time td, at the uniform velocity distance Sd, is calculated according to td and Sd actually required at the uniform velocity fast
Spend Vd；
S105: judge whether the uniform velocity V* of setting and calculating uniform velocity Vd actually required are equal, if not identical
V* is adjusted, S101 is re-executed.
Further, since energy consumption of vehicles includes traction converter damage to contactless net tramcar in the traction stage
Consumption, unidirectional DC/DC loss, traction electric machine loss and the loss of basic running resistance, during this, maximum of the vehicle can achieve
Acceleration accelerates, and guarantees that vehicle traction phases-time is minimum and range ability is most short；The contactless net tramcar is being drawn
Stage vehicle is drawn by motor curve of traction characteristics, according to the uniform velocity V* of setting, calculates the pull-in time in distraction procedure
Tq and hauling distance Sq and running under power speed V, its calculation formula is:
Wherein, T is the sampling time, and m is vehicle mass, and tq is the pull-in time, and Sq is hauling distance, and a is traction acceleration,
V is hauling speed, FconstantFor vehicular electric machine permanent torque power output, PconstantFor vehicular electric machine invariable power power output, FfFor vehicle vehicle
Run datum drag.
Further, in order to improve the Brake energy recovery rate in braking process, vehicles energy accumulating system has been required to
Hypersorption vehicle electrical braking power, the contactless net tramcar control electrical braking power and are less than or equal in the deboost phase
The absorbability of energy-storage system guarantees the safety of energy-storage system during vehicle braking；
Since the size of vehicle electrical braking power influences the size of vehicle deceleration, electrical braking power is bigger, and brake force is got over
Greatly, deceleration is bigger；Vice versa, and vehicle, in order to quickly reduce speed, is considering the feelings sticked together of vehicle in braking process
It is expected that electrical braking power is the bigger the better under condition, but the limitation of the absorbability due to energy storage, needs to control electrical braking power and storing up
Near energy absorbability, guarantee that not only energy storage can fully absorb braking energy, but also braking distance and time in braking process
It is most short；Therefore, according to the uniform velocity V of setting*, calculate pull-in time t in braking processz, hauling distance Sz, and braking fortune
Scanning frequency degree V, its calculation formula is:
Wherein, T is the sampling time, and m is vehicle mass, tzFor pull-in time, SzFor hauling distance, a is traction acceleration, V
For hauling speed, ηDC/ACFor traction invertor efficiency, PscFor super capacitor maximum charge power, FfBasic resistance is run for vehicle vehicle
Power.
Further, according to the time and distance that calculate resulting traction phases-time and distance and phase process,
Calculate constant velocity stage's process remaining times tdAt the uniform velocity distance Sd, according to tdWith SdCalculating travels at the uniform speed speed Vd, and judge reality
The speed V that travels at the uniform speed neededdWith the uniform velocity V of setting*It is whether identical, if the uniform velocity V of not identical adjustment setting*, weight
It is new to calculate tdWith Sd, its calculation formula is:
Further, the on-line velocity adjusts strategy: when vehicle actual speed deviates optimal reference velocity, adjusting
Car speed guarantees that influence while vehicle reaches on schedule to the energy utilization efficiency of vehicle minimizes.
Further, the on-line velocity adjusts strategy, comprising steps of
When actual motion speed deviations optimize resulting reference velocity, vehicle speed control system adjusts speed
Section adjusts the reference velocity of vehicle constant velocity stage；Since vehicle actual vehicle speed deviates the at the uniform velocity rank happened in reference velocity
Section, if reference velocity in stage will affect the energy regenerating of deboost phase vehicle, vehicle actual motion without adjusting to this
In at the uniform velocity end moment speed need to reach the obtained reference velocity of optimization, it is therefore desirable to reference for adjusting vehicle constant velocity stage is fast
Degree calculates range ability SusedRuning time tused, calculation formula are as follows:
In formula: tdrestConstant velocity stage end remaining time at moment, S are reached for vehicledrestConstant velocity stage end is reached for vehicle
Hold moment Distance Remaining, VdrestTheoretical velocity needed for reaching the constant velocity stage end moment for vehicle；
Stop ends moment speed is required to reach the speed of service that optimization obtains when vehicle is run, and if vehicle is by theory
Speed Vdrest(t) it runs, car speed will cannot reach the speed of service for optimizing and obtaining at the uniform velocity end, can produce to braking process
It is raw to influence；Therefore, using the strategy of speed control based on PI control method, with theoretical velocity Vdrest(t) with actual speed Vd(t)
Deviation as system input quantity on line real time control car speed, guarantee that car speed reaches optimization institute at the at the uniform velocity end moment
The speed V obtainedd(t), calculation formula are as follows:
Wherein: Vdactual(t) be on-line operation when vehicle reference speed, vehicle run when actual speed follow this speed.
Further, the electromechanical brake force optimal distribution strategy: vehicle uses electronically-controlled pneumatic brake in braking latter stage
Optimal distribution strategy to vehicle apply mechanical braking supplement braking latter stage electric braking deficiency, and meet vehicle braking distance,
Braking deceleration and on schedule arrival require；
After vehicle braking to certain speed, there is deficiency in vehicle electric braking force, adds mechanical braking required for vehicle
Guarantee that braking deceleration reaches to require, therefore braking latter stage vehicle braking force includes mechanical braking force and motor braking power, two kinds
The switching point of braking model is determined jointly by driving motor power generation characteristics, speed and braking distance；According to vehicle traction motor
Braking force characteristic, obtain electric braking force and mechanical braking force optimum allocation mode, complete vehicle optimal brake power optimization
Distribution guarantees that vehicle braking distance is met the requirements with braking time.
Further, the electromechanical brakes optimum allocation method, comprising steps of
(1) on-position switching point: setting speed switching point, when arrival rate switching point, are converted to mixed by electric braking state
Close on-position, mechanical braking intervention；
In view of operational safety and comfort of passenger, deceleration is not easy excessive, and for determining route, sets maximum braking
Deceleration braking: a (t) < amaxt∈(t0, tend)；
(2) the optimal intervention spot speed of mechanical braking solves:
Calculate deboost phase vehicle range ability Szused, braking process Distance Remaining Szrest, Szrest(t)=Sz-Sdused
(t), SzFor the braking distance in optimal reference velocity；
(3) judge whether to need that mechanical braking is added:
It needs to be added mechanical braking immediately when equation is set up, and to be braked with maximum braking deceleration；In vehicle braking
In the process, originally Szrest(t) it is greater than v2(t)/2amax, braking latter stage S will occurzrest(t) it is equal to or less than v2(t)/2amax；
If necessary to which mechanical braking is added, solving and the speed point of mechanical braking is added is VswitchAnd calculation formula (t), are as follows:
Using the technical program the utility model has the advantages that
It is special according to vehicle hour, range ability, maximum speed limitation, acceleration limitation, vehicular electric machine in the present invention
Linearity curve, energy-storage system maximum charge ability, ancillary equipment and basic running resistance complex optimum obtain vehicle in the section
Operation curve, contactless net railroad vehicle when the curve motion not only to reach on schedule, and energy utilization efficiency highest；
It is run when contactless net tramcar operates normally in the present invention by the rate curve of optimization, when vehicle meets special feelings
When condition actual speed deviates the reference velocity that optimization obtains, uses on-line velocity to adjust algorithm and adjust car speed to guarantee vehicle
It reaches on schedule；
Vehicle applies mechanical braking supplement to vehicle using electric pneumatic breaking optimum allocation algorithm in braking latter stage in the present invention
Brake the deficiency of latter stage electric braking.
Detailed description of the invention
Fig. 1 operation energy consumption comprehensive optimization method process between a kind of contactless net tramcar whole district of the invention is illustrated
Figure；
Fig. 2 is the flow diagram of offline full interval Optimization Method in the embodiment of the present invention；
Fig. 3 is the flow diagram that on-line velocity adjusts strategy in the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made into one with reference to the accompanying drawing
Step illustrates.
In the present embodiment, shown in Figure 1, the invention proposes run energy between a kind of contactless net tramcar whole district
Comprehensive optimization method is consumed, comprising steps of
Vehicle is obtained in the speed of service curve in the section according to contactless net tramcar operating parameter complex optimum, into
The offline full range optimization of row；
When vehicle, which meets special circumstances actual speed, deviates the reference velocity that optimization obtains, vehicle is adjusted by on-line velocity
Strategy adjusts car speed with electromechanical brake force optimum allocation measurement.
As the prioritization scheme of above-described embodiment, the offline full interval Optimization Method: according to vehicle hour, operation
Distance, maximum speed limitation, acceleration limitation, vehicular electric machine characteristic curve, energy-storage system maximum charge ability, ancillary equipment with
And the basic running resistance complex optimum of vehicle obtains vehicle in the operation curve in the section, determines optimal reference velocity, it is contactless
Net railroad vehicle is run with the optimal reference velocity；It can not only realize that contactless net tramcar reaches on schedule, and energy
Utilization efficiency highest.
Energy consumption includes traction converter loss, unidirectional DC/DC loss, leads in contactless net tramcar operational process
Draw the ancillary equipments such as the loss of electric machine, running resistance loss, mechanical braking energy consumption, heat dissipation and power supply air-conditioning, improves vehicle energy
Utilization rate can be the energy loss for reducing traction and constant velocity stage and the energy for improving the vehicle braking stage from the aspect of two
Amount recycling reduces energy loss and improves two aspects of vehicle energy regenerating connecting each other, is indivisible, therefore improves energy utilization
Rate, using following methods:
In the offline full interval Optimization Method to contactless net tramcar in the vehicle running traction stage, at the uniform velocity
Stage and deboost phase carry out energy consumption analysis respectively；Further according to vehicle hour t, range ability S, maximum speed limitation
Vmax, acceleration limit amax, vehicular electric machine characteristic curve, energy-storage system maximum charging and discharging capabilities, the basic running resistance of vehicle
And ancillary equipment carries out off-line operation optimization to traction stage, constant velocity stage and deboost phase in operational process respectively respectively,
Time and the distance in each stage are calculated, so that optimization obtains speed of service V；
The optimization method, as shown in Fig. 2, comprising steps of
S101: t, the uniform velocity V* of setting are required according to distance between sites S and runing time；
S102: pull-in time tq, hauling distance Sq in the traction stage are calculated；
S103: pull-in time tz, hauling distance Sz in the deboost phase are calculated；
S104: calculating constant velocity stage's remaining time td, at the uniform velocity distance Sd, is calculated according to td and Sd actually required at the uniform velocity fast
Spend Vd；
S105: judge whether the uniform velocity V* of setting and calculating uniform velocity Vd actually required are equal, if not identical
V* is adjusted, S101 is re-executed.
Since energy consumption of vehicles includes traction converter loss, unidirectional DC/DC to contactless net tramcar in the traction stage
Loss, traction electric machine loss and the loss of basic running resistance, during this, vehicle is accelerated with the peak acceleration that can achieve,
Guarantee that vehicle traction phases-time is minimum and range ability is most short；The contactless net tramcar is in traction stage vehicle by electricity
The traction of machine travel characteristic curve calculates pull-in time tq and hauling distance in distraction procedure according to the uniform velocity V* of setting
Sq and running under power speed V, its calculation formula is:
Wherein, T is the sampling time, and m is vehicle mass, and tq is the pull-in time, and Sq is hauling distance, and a is traction acceleration,
V is hauling speed, FconstantFor vehicular electric machine permanent torque power output, PconstantFor vehicular electric machine invariable power power output, FfFor vehicle vehicle
Run datum drag.
In order to improve the Brake energy recovery rate in braking process, vehicles energy accumulating system is required to fully absorb vehicle electrical
Braking power, the contactless net tramcar control the suction that electrical braking power is less than or equal to energy-storage system in the deboost phase
Receipts ability guarantees the safety of energy-storage system during vehicle braking；
Since the size of vehicle electrical braking power influences the size of vehicle deceleration, electrical braking power is bigger, and brake force is got over
Greatly, deceleration is bigger；Vice versa, and vehicle, in order to quickly reduce speed, is considering the feelings sticked together of vehicle in braking process
It is expected that electrical braking power is the bigger the better under condition, but the limitation of the absorbability due to energy storage, needs to control electrical braking power and storing up
Near energy absorbability, guarantee that not only energy storage can fully absorb braking energy, but also braking distance and time in braking process
It is most short；Therefore, according to the uniform velocity V of setting*, calculate pull-in time t in braking processz, hauling distance Sz, and braking fortune
Scanning frequency degree V, its calculation formula is:
Wherein, T is the sampling time, and m is vehicle mass, tzFor pull-in time, SzFor hauling distance, a is traction acceleration, V
For hauling speed, ηDC/ACFor traction invertor efficiency, PscFor super capacitor maximum charge power, FfBasic resistance is run for vehicle vehicle
Power.
According to the time and distance for calculating resulting traction phases-time and distance and phase process, constant velocity stage is calculated
Process remaining times tdAt the uniform velocity distance Sd, according to tdWith SdCalculating travels at the uniform speed speed Vd, and judge actually required at the uniform velocity to transport
Scanning frequency degree VdWith the uniform velocity V of setting*It is whether identical, if the uniform velocity V of not identical adjustment setting*, recalculate tdWith Sd,
Its calculation formula is:
As the prioritization scheme of above-described embodiment, the on-line velocity adjusts strategy: when the deviation of vehicle actual speed is optimal
When reference velocity, car speed is adjusted, guarantees that influence while vehicle reaches on schedule to the energy utilization efficiency of vehicle is minimum
Change.
The on-line velocity adjusts strategy, as shown in figure 3, comprising steps of
When actual motion speed deviations optimize resulting reference velocity, vehicle speed control system adjusts speed
Section adjusts the reference velocity of vehicle constant velocity stage；Since vehicle actual vehicle speed deviates the at the uniform velocity rank happened in reference velocity
Section, if reference velocity in stage will affect the energy regenerating of deboost phase vehicle, vehicle actual motion without adjusting to this
In at the uniform velocity end moment speed need to reach the obtained reference velocity of optimization, it is therefore desirable to reference for adjusting vehicle constant velocity stage is fast
Degree calculates range ability SusedRuning time tused, calculation formula are as follows:
In formula: tdrestConstant velocity stage end remaining time at moment, S are reached for vehicledrestConstant velocity stage end is reached for vehicle
Hold moment Distance Remaining, VdrestTheoretical velocity needed for reaching the constant velocity stage end moment for vehicle；
Stop ends moment speed is required to reach the speed of service that optimization obtains when vehicle is run, and if vehicle is by theory
Speed Vdrest(t) it runs, car speed will cannot reach the speed of service for optimizing and obtaining at the uniform velocity end, can produce to braking process
It is raw to influence；Therefore, using the strategy of speed control based on PI control method, with theoretical velocity Vdrest(t) with actual speed Vd(t)
Deviation as system input quantity on line real time control car speed, guarantee that car speed reaches optimization institute at the at the uniform velocity end moment
The speed V obtainedd(t), calculation formula are as follows:
Wherein: Vdactual(t) be on-line operation when vehicle reference speed, vehicle run when actual speed follow this speed.
As the prioritization scheme of above-described embodiment, the electromechanical brake force optimal distribution strategy: vehicle is in braking latter stage
Apply the deficiency of mechanical braking supplement braking latter stage electric braking to vehicle using electronically-controlled pneumatic brake optimal distribution strategy, and meets
Vehicle braking distance, braking deceleration and arrival on schedule require；
After vehicle braking to certain speed, there is deficiency in vehicle electric braking force, adds mechanical braking required for vehicle
Guarantee that braking deceleration reaches to require, therefore braking latter stage vehicle braking force includes mechanical braking force and motor braking power, two kinds
The switching point of braking model is determined jointly by driving motor power generation characteristics, speed and braking distance；According to vehicle traction motor
Braking force characteristic, obtain electric braking force and mechanical braking force optimum allocation mode, complete vehicle optimal brake power optimization
Distribution guarantees that vehicle braking distance is met the requirements with braking time.
The electromechanical brakes optimum allocation method, comprising steps of
(1) on-position switching point: setting speed switching point, when arrival rate switching point, are converted to mixed by electric braking state
Close on-position, mechanical braking intervention；
In view of operational safety and comfort of passenger, deceleration is not easy excessive, and for determining route, sets maximum braking
Deceleration braking: a (t) < amaxt∈(t0, tend)；
(2) the optimal intervention spot speed of mechanical braking solves:
Calculate deboost phase vehicle range ability Szused, braking process Distance Remaining Szrest, Szrest(t)=Sz-Sdused
(t), SzFor the braking distance in optimal reference velocity；
(3) judge whether to need that mechanical braking is added:
It needs to be added mechanical braking immediately when equation is set up, and to be braked with maximum braking deceleration；In vehicle braking
In the process, originally Szrest(t) it is greater than v2(t)/2amax, braking latter stage S will occurzrest(t) it is equal to or less than v2(t)/2amax；
If necessary to which mechanical braking is added, solving and the speed point of mechanical braking is added is VswitchAnd calculation formula (t), are as follows:
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district, which is characterized in that comprising steps of
Obtain vehicle in the speed of service curve in the section according to contactless net tramcar operating parameter complex optimum, carry out from
The full range optimization of line；
When vehicle, which meets special circumstances actual speed, deviates the reference velocity that optimization obtains, vehicle adjusts strategy by on-line velocity
It is measured with electromechanical brake force optimum allocation and adjusts car speed.
2. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 1, special
Sign is, the offline full interval Optimization Method: is limited according to vehicle hour, range ability, maximum speed limitation, acceleration
System, vehicular electric machine characteristic curve, energy-storage system maximum charge ability, ancillary equipment and the basic running resistance complex optimum of vehicle
Vehicle is obtained in the operation curve in the section, determines optimal reference velocity, contactless net railroad vehicle is with described optimal with reference to speed
Degree operation.
3. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 2, special
Sign is, in the offline full interval Optimization Method to contactless net tramcar in the vehicle running traction stage, at the uniform velocity
Stage and deboost phase carry out energy consumption analysis respectively；Further according to vehicle hour t, range ability S, maximum speed limitation
Vmax, acceleration limit amax, vehicular electric machine characteristic curve, energy-storage system maximum charging and discharging capabilities, the basic running resistance of vehicle
And ancillary equipment carries out off-line operation optimization to traction stage, constant velocity stage and deboost phase in operational process respectively respectively,
Time and the distance in each stage are calculated, so that optimization obtains speed of service V；
The optimization method, comprising steps of
S101: t, the uniform velocity V* of setting are required according to distance between sites S and runing time；
S102: pull-in time tq, hauling distance Sq in the traction stage are calculated；
S103: pull-in time tz, hauling distance Sz in the deboost phase are calculated；
S104: calculating constant velocity stage's remaining time td, at the uniform velocity distance Sd, calculates uniform velocity actually required according to td and Sd
Vd；
S105: judge whether the uniform velocity V* of setting and calculating uniform velocity Vd actually required are equal, if not identical adjustment
V* re-executes S101.
4. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 3, special
Sign is that the contactless net tramcar is drawn in traction stage vehicle by motor curve of traction characteristics, according to the even of setting
Degree of hastening V* calculates pull-in time tq and hauling distance Sq and running under power speed V in distraction procedure, calculation formula
Are as follows:
Wherein, T is the sampling time, and m is vehicle mass, and tq is the pull-in time, and Sq is hauling distance, and a is traction acceleration, and V is
Hauling speed, FconstantFor vehicular electric machine permanent torque power output, PconstantFor vehicular electric machine invariable power power output, FfFor the operation of vehicle vehicle
Datum drag.
5. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 4, special
Sign is that the contactless net tramcar controls the absorption that electrical braking power is less than or equal to energy-storage system in the deboost phase
Ability guarantees the safety of energy-storage system during vehicle braking；According to the uniform velocity V of setting*, calculate and drawn in braking process
Time tz, hauling distance SzAnd running under braking speed V, its calculation formula is:
Wherein, T is the sampling time, and m is vehicle mass, tzFor pull-in time, SzFor hauling distance, a is traction acceleration, and V is to lead
Draw speed, ηDC/ACFor traction invertor efficiency, PscFor super capacitor maximum charge power, FfDatum drag is run for vehicle vehicle.
6. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 5, special
Sign is, according to the time and distance for calculating resulting traction phases-time and distance and phase process, calculates constant velocity stage
Process remaining times tdAt the uniform velocity distance Sd, according to tdWith SdCalculating travels at the uniform speed speed Vd, and judge actually required at the uniform velocity to transport
Scanning frequency degree VdWith the uniform velocity V of setting*It is whether identical, if the uniform velocity V of not identical adjustment setting*, recalculate tdWith Sd,
Its calculation formula is:
7. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 6, special
Sign is that the on-line velocity adjusts strategy: when vehicle actual speed deviates optimal reference velocity, adjusting car speed, protects
Influence while card vehicle reaches on schedule to the energy utilization efficiency of vehicle minimizes.
8. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 7, special
Sign is that the on-line velocity adjusts strategy, comprising steps of
When actual motion speed deviations optimize resulting reference velocity, speed is adjusted in vehicle speed control system, is adjusted
Save the reference velocity of vehicle constant velocity stage；Calculate range ability SusedRuning time tused, calculation formula are as follows:
In formula: tdrestConstant velocity stage end remaining time at moment, S are reached for vehicledrestWhen reaching constant velocity stage end for vehicle
Carve Distance Remaining, VdrestTheoretical velocity needed for reaching the constant velocity stage end moment for vehicle；
Using the strategy of speed control based on PI control method, with theoretical velocity Vdrest(t) with actual speed Vd(t) deviation is made
For system input quantity on line real time control car speed, guarantee that car speed reaches the resulting speed of optimization at the at the uniform velocity end moment
Vd(t), calculation formula are as follows:
Wherein: Vdactual(t) be on-line operation when vehicle reference speed, vehicle run when actual speed follow this speed.
9. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 8, special
Sign is that the electromechanical brake force optimal distribution strategy: vehicle uses electronically-controlled pneumatic brake optimal distribution strategy in braking latter stage
To vehicle apply mechanical braking supplement braking latter stage electric braking deficiency, and meet vehicle braking distance, braking deceleration with
And it reaches and requires on schedule；
Braking latter stage vehicle braking force includes mechanical braking force and motor braking power, and the switching point of two kinds of braking models is by driving electricity
Machine power generation characteristics, speed and braking distance determine jointly；According to the braking force characteristic of vehicle traction motor, electric braking force is obtained
With the optimum allocation mode of mechanical braking force, the optimization distribution of vehicle optimal brake power is completed, guarantees vehicle braking distance and system
The dynamic time meets the requirements.
10. operation energy consumption comprehensive optimization method between a kind of contactless net tramcar whole district according to claim 9, special
Sign is that the electromechanical brakes optimum allocation method, comprising steps of
(1) on-position switching point: setting speed switching point is converted to mixing system by electric braking state when arrival rate switching point
Dynamic state, mechanical braking intervention；
Set maximum braking deceleration braking: a (t) < amax t∈(t0,tend)；
(2) the optimal intervention spot speed of mechanical braking solves:
Calculate deboost phase vehicle range ability Szused, braking process Distance Remaining Szrest, Szrest(t)=Sz-Sdused(t),
SzFor the braking distance in optimal reference velocity；
(3) judge whether to need that mechanical braking is added:
It needs to be added mechanical braking immediately when equation is set up, and to be braked with maximum braking deceleration；In vehicle braking process
In, originally Szrest(t) it is greater than v2(t)/2amax, braking latter stage S will occurzrest(t) it is equal to or less than v2(t)/2amax；
If necessary to which mechanical braking is added, solving and the speed point of mechanical braking is added is VswitchAnd calculation formula (t), are as follows:
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910010650.7A CN109703593B (en) | 2019-01-07 | 2019-01-07 | Comprehensive optimization method for whole-district operation of contact-net-free tramcar |
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| CN201910010650.7A CN109703593B (en) | 2019-01-07 | 2019-01-07 | Comprehensive optimization method for whole-district operation of contact-net-free tramcar |
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| CN109703593A true CN109703593A (en) | 2019-05-03 |
| CN109703593B CN109703593B (en) | 2020-02-11 |
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