CN107658961A - Photovoltaic energy storage type DC traction power-supply system - Google Patents
Photovoltaic energy storage type DC traction power-supply system Download PDFInfo
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- CN107658961A CN107658961A CN201710874085.XA CN201710874085A CN107658961A CN 107658961 A CN107658961 A CN 107658961A CN 201710874085 A CN201710874085 A CN 201710874085A CN 107658961 A CN107658961 A CN 107658961A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 55
- 230000009466 transformation Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000007812 deficiency Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 19
- 238000013519 translation Methods 0.000 claims description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000000844 transformation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The present invention provides a kind of photovoltaic energy storage type DC traction power-supply system, and the photovoltaic energy storage type DC traction power-supply system includes：At least two traction power transformation circuits, at least two traction power transformation circuit in parallel are set；Each traction power transformation circuit includes solar panels, booster circuit and accumulator；Booster circuit is used to carry out boosting processing to the electric energy of DC voltage caused by solar energy, obtains the electric energy of predetermined DC voltage, and the electric energy of predetermined DC voltage is inputted to the input of vehicle electric energy；Accumulator is used for when the electric energy of predetermined DC voltage is more than the electric energy needed for vehicle operation, by beyond the electric energy of predetermined DC voltage be converted to the electric energy of the first DC voltage, and store the electric energy of the first DC voltage；So that in the electric energy deficiency of DC voltage caused by solar energy, required electric energy is provided for vehicle operation.Photovoltaic energy storage type DC traction power-supply system provided by the invention, improves vehicle reliability of operation.
Description
Technical field
The present invention relates to urban rail transit vehicles tractive power supply system technical field, more particularly to a kind of photovoltaic energy storage type
DC traction power-supply system.
Background technology
Urban track traffic has the advantages such as safety and comfort, handling capacity of passengers are big, the speed of service is fast, energy-conserving and environment-protective, and it is for solution
Certainly the urban congestion problem of getting worse plays an important role, thus as development construction urban track traffic it is essential because
Element.
In the prior art, in tractive power supply system, all supplies of electric power are all from external power grid, in tractive power supply system
Main transformer station is converted to the 110kV of external power grid alternating voltage 35kV alternating voltage, and by middle pressure ring net by 35kV's
Rectification circuit in AC voltages transmission to tractive power supply system, to be converted to 35kV alternating voltage by the rectification circuit
DC voltage needed for vehicle operation, so as to be the voltage needed for vehicle operation by the DC voltage.Wherein, when vehicle is run
In required voltage, power for traction amount accounts for 50% or so, and air conditioner is accounted for, Escalator with non-power for traction amounts such as, illuminations
50% or so.
However, when the circuit company for providing external power grid stops powering to tractive power supply system, or during electricity shortage, then
So that vehicle can not be run, so as to cause vehicle reliability of operation not high.
The content of the invention
The present invention provides a kind of photovoltaic energy storage type DC traction power-supply system, to improve vehicle reliability of operation.
The embodiment of the present invention provides a kind of photovoltaic energy storage type DC traction power-supply system, including：
At least two traction power transformation circuits, at least two traction power transformations circuit in parallel are set；Each described traction
Power transformation circuit includes solar panels, booster circuit and accumulator；
Wherein, the solar panels are connected with the first end of the booster circuit；The second end difference of the booster circuit
It is connected with the input of vehicle electric energy and the input of the accumulator；
The booster circuit is used to carry out boosting processing to the electric energy of DC voltage caused by the solar energy, is preset
The electric energy of DC voltage, and the electric energy of the predetermined DC voltage is inputted to the input of the vehicle electric energy；
The accumulator is used for when the electric energy of the predetermined DC voltage is more than the electric energy needed for vehicle operation,
By beyond the electric energy of predetermined DC voltage be converted to the electric energy of the first DC voltage, and store the electricity of first DC voltage
Energy；So that in the electric energy deficiency of DC voltage caused by the solar energy, required electric energy is provided for vehicle operation.
In an embodiment of the present invention, the accumulator includes：
DC-DC DC/DC translation circuits and energy-storage travelling wave tube；
Wherein, the first end of the DC/DC translation circuits is connected with the second end of the booster circuit；The DC/DC becomes
The second end for changing circuit is connected with the input of the energy-storage travelling wave tube.
In an embodiment of the present invention, the DC/DC translation circuits include：
First inductance, the second inductance, the 3rd inductance, the first insulated gate bipolar transistor IGBT, the 2nd IGBT, the 3rd
IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT and the first electric capacity；
The first end of the first end of first inductance, the first end of second inductance and the 3rd inductance is and institute
State energy-storage travelling wave tube connection；Second end of first inductance respectively with the first end of the first IGBT and the 2nd IGBT
First end connects；Second end of second inductance respectively with the first end of the 3rd IGBT and the 4th IGBT first
End connection；Second end of the 3rd inductance connects with the first end of the 5th IGBT and the first end of the 6th IGBT respectively
Connect；Second end at the second end of the first IGBT, the second end of the 3rd IGBT and the 5th IGBT is with described
The positive pole connection of one electric capacity；The second end of 2nd IGBT, the of the second end of the 4th IGBT and the 6th IGBT
Two ends are connected with the negative pole of first electric capacity and the energy-storage travelling wave tube.
In an embodiment of the present invention, the booster circuit is BOOST circuits.
In an embodiment of the present invention, the BOOST circuits include：
4th inductance, the 5th inductance, the 6th inductance, the first diode, the second diode, the 3rd diode, the 7th IGBT,
8th IGBT, the 9th IGBT and the second electric capacity；
Wherein, the first end of the 4th inductance, the first end of the 5th inductance and the first end of the 6th inductance
Positive pole with the solar panels is connected；Second end of the 4th inductance respectively with the input of first diode and
The first end connection of 7th IGBT；Second end of the 5th inductance input with second diode and institute respectively
State the 8th IGBT first end connection；Second end of the 6th inductance respectively with the input of the 3rd diode and described
9th IGBT first end connection；The output end of first diode, the output end of second diode and the described 3rd
First end of the output end of diode with second electric capacity is connected；The second end of 7th IGBT, the 8th IGBT
The second end and the second end of the 9th IGBT connect with the second end of the negative poles of the solar panels and second electric capacity
Connect.
In an embodiment of the present invention, the photovoltaic energy storage type DC traction power-supply system also includes middle pressure ring net and main transformer
Electric institute, the traction power transformation circuit also include rectification circuit；
Wherein, the output end of the main transformer station is connected by the first end of medium pressure looped network and rectification circuit；It is described
Second end of rectification circuit is connected with the input of the vehicle electric energy；
Main transformer station is used to carry out decompression processing to the electric energy of the initial alternating voltage of outside input, obtains default alternating current
The electric energy of pressure, and transmitted the electric energy of the default alternating voltage to the rectification circuit by medium pressure looped network；
The rectification circuit is used to carry out step-down rectifier processing to the electric energy of the default alternating voltage, obtains predetermined DC
The electric energy of voltage, and the electric energy of the predetermined DC voltage is inputted to the input of the vehicle electric energy.
In an embodiment of the present invention, the rectification circuit is diode rectification unit circuit.
In an embodiment of the present invention, the diode rectification unit circuit includes：
First three winding phase-shifting transformer, the second three winding phase-shifting transformer, the first diode rectifier, the second diode
Rectifier；3rd diode rectifier and the 4th diode rectifier；
Wherein, the first end of the first three winding phase-shifting transformer and the first end of the second three winding phase-shifting transformer are equal
It is connected with medium pressure looped network；The of second end of the first three winding phase-shifting transformer and first diode rectifier
One end connects；3rd end of the first three winding phase-shifting transformer is connected with the first end of second diode rectifier；
Second end of the second three winding phase-shifting transformer is connected with the first end of the 3rd diode rectifier；Described 2nd 3
3rd end of winding phase-shifting transformer is connected with the first end of the 4th diode rectifier；First diode rectifier
The second end the second end with second diode rectifier, the second end of the 3rd diode rectifier and described respectively
The second end connection of 4th diode rectifier；3rd end of first diode rectifier respectively with second diode
3rd end at the 3rd end of rectifier, the 3rd end of the 3rd diode rectifier and the 4th diode rectifier connects
Connect.
In an embodiment of the present invention, the photovoltaic energy storage type DC traction power-supply system also includes：
Contact net, the booster circuit are connected by the contact net with the input of the vehicle electric energy, the contact
Net is rigid contact net or rigid suspension OCS.
In an embodiment of the present invention, the energy-storage travelling wave tube is at least one of lithium battery and electric capacity.
The photovoltaic energy storage type DC traction power-supply system provided in an embodiment of the present invention, the photovoltaic energy storage type DC traction supply
Electric system includes：At least two traction power transformation circuits, at least two traction power transformation circuit in parallel are set；Each traction power transformation electricity
Road includes solar panels, booster circuit and accumulator；Booster circuit is used for the electric energy to DC voltage caused by solar energy
Boosting processing is carried out, obtains the electric energy of predetermined DC voltage, and the electric energy of predetermined DC voltage is inputted defeated to vehicle electric energy
Enter end；Accumulator is used for when the electric energy of predetermined DC voltage is more than the electric energy needed for vehicle operation, by beyond it is default straight
The electric energy of stream voltage is converted to the electric energy of the first DC voltage, and stores the electric energy of the first DC voltage；To be produced in solar energy
DC voltage electric energy deficiency when, for vehicle operation provides needed for electric energy.As can be seen here, light provided in an embodiment of the present invention
Lie prostrate accumulation energy type DC traction power-supply system so that when the electric energy of solar energy is more than the electric energy needed for vehicle operation, pass through setting
Accumulator by beyond direct current 750V or direct current 1500V electric energy be converted to the electric energy of the first DC voltage, and store this
The electric energy of one DC voltage；During so as to be insufficient for the electric energy needed for vehicle operation in electric energy caused by solar energy, by this
The electric energy of the first DC voltage stored in accumulator provides required electric energy for vehicle operation, is led when avoiding electricity shortage
The vehicle of cause can not be run, and then improve vehicle reliability of operation.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Fig. 1 is a kind of structural representation of photovoltaic energy storage type DC traction power-supply system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of another photovoltaic energy storage type DC traction power-supply system provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of DC/DC translation circuits provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of BOOST circuits provided in an embodiment of the present invention；
Fig. 5 is the structural representation of another photovoltaic energy storage type DC traction power-supply system provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of diode rectification unit circuit provided in an embodiment of the present invention.
Pass through above-mentioned accompanying drawing, it has been shown that the clear and definite embodiment of the disclosure, will hereinafter be described in more detail.These accompanying drawings
It is not intended to limit the scope of disclosure design by any mode with word description, but is by reference to specific embodiment
Those skilled in the art illustrate the concept of the disclosure.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the disclosure.
Term " first ", " second ", " the 3rd " " in description and claims of this specification and above-mentioned accompanying drawing
The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage
The data that solution so uses can exchange in the appropriate case, so as to embodiments of the invention described herein for example can with except
Order beyond those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, production
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for this
The intrinsic other steps of a little process, method, product or equipment or unit.
In existing tractive power supply system, all supplies of electric power are all from external power grid, when the circuit for providing external power grid is public
Department stop to tractive power supply system power when, or during electricity shortage, then so that vehicle can not be run, so as to cause vehicle to run
Reliability it is not high.In order to improve vehicle reliability of operation, the embodiments of the invention provide a kind of photovoltaic energy storage type direct current to lead
Draw electric power system, the photovoltaic energy storage type DC traction power-supply system includes：At least two traction power transformation circuits, at least two tractions
Power transformation circuit in parallel is set；Each traction power transformation circuit includes solar panels, booster circuit and accumulator；Booster circuit
For carrying out boosting processing to the electric energy of DC voltage caused by solar energy, the electric energy of predetermined DC voltage is obtained, and will be default
The electric energy of DC voltage is inputted to the input of vehicle electric energy；Accumulator is used to be more than vehicle in the electric energy of predetermined DC voltage
During electric energy needed for operation, by beyond the electric energy of predetermined DC voltage be converted to the electric energy of the first DC voltage, and store the
The electric energy of one DC voltage；So that in the electric energy deficiency of DC voltage caused by solar energy, required electricity is provided for vehicle operation
Energy.As can be seen here, photovoltaic energy storage type DC traction power-supply system provided in an embodiment of the present invention so that big in the electric energy of solar energy
In vehicle operation needed for electric energy when, by set accumulator by beyond direct current 750V or direct current 1500V electric energy change
For the electric energy of the first DC voltage, and store the electric energy of first DC voltage；So as to be not enough in electric energy caused by solar energy
When meeting the electric energy needed for vehicle operation, carried by the electric energy of the first DC voltage stored in the accumulator for vehicle operation
For required electric energy, caused vehicle can not be run when avoiding electricity shortage, and then improve vehicle reliability of operation.
How to be solved to the technical scheme of technical scheme and the application with specific embodiment below above-mentioned
Technical problem is described in detail.These specific embodiments can be combined with each other below, for same or analogous concept
Or process repeats no more in certain embodiments.Below in conjunction with accompanying drawing, embodiments of the invention are described.
Fig. 1 is a kind of structural representation of photovoltaic energy storage type DC traction power-supply system 10 provided in an embodiment of the present invention,
It is shown in Figure 1, certainly, the embodiment of the present invention simply illustrated by taking Fig. 1 as an example, but do not represent present invention is limited only by
This.The photovoltaic energy storage type DC traction power-supply system 10 can include：
At least two traction power transformation circuits 101, at least two traction power transformation circuits 101 are arranged in parallel；Each traction becomes
Circuit 101 includes solar panels 1011, booster circuit 1012 and accumulator 1013.
Wherein, solar panels 1011 are connected with the first end of booster circuit 1012；The second end difference of booster circuit 1012
It is connected with the input of vehicle electric energy and the input of accumulator 1013.
Booster circuit 1012 is used to carry out boosting processing to the electric energy of DC voltage caused by solar energy, obtains predetermined DC
The electric energy of voltage, and the electric energy of predetermined DC voltage is inputted to the input of vehicle electric energy.
Accumulator 1013 be used for predetermined DC voltage electric energy be more than vehicle operation needed for electric energy when, by beyond
The electric energy of predetermined DC voltage is converted to the electric energy of the first DC voltage, and stores the electric energy of the first DC voltage；With in the sun
During the electric energy deficiency of DC voltage caused by energy, required electric energy is provided for vehicle operation.
Example, in embodiments of the present invention, the number of at least two traction power transformation circuits 101 is 10, specifically can root
It is configured according to the length of vehicle line, here, the number for drawing power transformation circuit 101, the present invention do not do specific limitation.
Example, in embodiments of the present invention, the magnitude of voltage of predetermined DC voltage can be 750V, or 1500,
It is of course also possible to be other values, it can be specifically configured according to being actually needed, as long as the electric energy of the predetermined DC voltage meets
Electric energy needed for vehicle operation, here, specially how many for the magnitude of voltage of predetermined DC voltage, the present invention does not do specific
Limitation.
It should be noted that in embodiments of the present invention, the magnitude of voltage of the first DC voltage specifically can be according to energy storage electricity
The voltage on road 1013 is configured, here, specially how many for the magnitude of voltage of the first DC voltage, the present invention does not do specific limit
System.
In embodiments of the present invention, by setting solar panels 1011 and booster circuit 1012, its object is to：It can lead to
The electric energy of DC voltage can first be produced by crossing solar panel, then by the booster circuit 1012 to direct current caused by solar panels 1011
The electric energy of pressure carries out boosting processing, obtains direct current 750V or direct current 1500V electric energy, so as to pass through direct current 750V or direct current
1500V electric energy provides required electric energy for vehicle operation, avoids to the circuit company for providing external power grid and pays substantial amounts of electricity
Take, so as to reduce the operation cost of urban track traffic.
In addition, by setting accumulator 1013, its object is to：It is more than in the electric energy of solar energy needed for vehicle operation
During electric energy, by beyond direct current 750V or direct current 1500V electric energy be converted to the electric energy of the first DC voltage, and store this first
The electric energy of DC voltage；During so as to be insufficient for the electric energy needed for vehicle operation in electric energy caused by solar energy, pass through the storage
The electric energy of the first DC voltage stored in energy circuit 1013 provides required electric energy for vehicle operation, when avoiding electricity shortage
Caused vehicle can not be run, and then improve vehicle reliability of operation.In addition, the accumulator 1013 can be also used for by
The electric energy of caused DC voltage is converted to the electric energy of the first DC voltage in vehicle braking procedure, and stores first direct current
The electric energy of pressure；Equally when electric energy caused by solar energy is insufficient for the electric energy needed for vehicle operation, pass through the accumulator
The electric energy of the first DC voltage stored in 1013 provides required electric energy for vehicle operation.
The photovoltaic energy storage type DC traction power-supply system 10 provided in an embodiment of the present invention, the photovoltaic energy storage type DC traction
Electric power system 10 includes：At least two traction power transformation circuits 101, at least two traction power transformation circuits 101 are arranged in parallel；Each
Traction power transformation circuit 101 includes solar panels 1011, booster circuit 1012 and accumulator 1013；Booster circuit 1012 is used for
Boosting processing is carried out to the electric energy of DC voltage caused by solar energy, obtains the electric energy of predetermined DC voltage, and by predetermined DC
The electric energy of voltage is inputted to the input of vehicle electric energy；Accumulator 1013 is used to be more than vehicle in the electric energy of predetermined DC voltage
During electric energy needed for operation, by beyond the electric energy of predetermined DC voltage be converted to the electric energy of the first DC voltage, and store the
The electric energy of one DC voltage；So that in the electric energy deficiency of DC voltage caused by solar energy, required electricity is provided for vehicle operation
Energy.As can be seen here, photovoltaic energy storage type DC traction power-supply system 10 provided in an embodiment of the present invention so that in the electric energy of solar energy
More than vehicle operation needed for electric energy when, by set accumulator 1013 by beyond direct current 750V or direct current 1500V electricity
The electric energy of the first DC voltage can be converted to, and stores the electric energy of first DC voltage；So as in electric energy caused by solar energy
During the electric energy being insufficient for needed for vehicle operation, the electric energy by the first DC voltage stored in the accumulator 1013 is
Vehicle operation provides required electric energy, and caused vehicle can not be run when avoiding electricity shortage, and then improves vehicle operation
Reliability.
Based on the embodiment shown in Fig. 1, optionally, accumulator 1013 can include：DC-DC (Direct
Current/Direct Current, DC/DC) translation circuit 10131 and energy-storage travelling wave tube 10132, shown in Figure 2, Fig. 2 is
The structural representation of another photovoltaic energy storage type DC traction power-supply system 10 provided in an embodiment of the present invention, certainly, the present invention
Embodiment simply illustrates by taking Fig. 2 as an example, but does not represent that present invention is limited only by this.Wherein, DC/DC translation circuits
10131 first end is connected with the second end of booster circuit 1012；Second end of DC/DC translation circuits 10131 and energy-storage travelling wave tube
10132 input connection.Optionally, DC/DC translation circuits 10131 can include：First inductance, the second inductance, the 3rd electricity
Sense, the first insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), the 2nd IGBT,
Three IGBT, the 4th IGBT, the 5th IGBT, the 6th IGBT and the first electric capacity, are referred to described in Fig. 3, Fig. 3 carries for the embodiment of the present invention
A kind of structural representation of the DC/DC translation circuits 10131 supplied, certainly, the embodiment of the present invention are simply said by taking Fig. 3 as an example
It is bright, but do not represent that present invention is limited only by this.The DC/DC translation circuits 10131 can include：
The first end of the first end of first inductance, the first end of the second inductance and the 3rd inductance with energy-storage travelling wave tube 10132
Connection；Second end of the first inductance is connected with the first IGBT first end and the 2nd IGBT first end respectively；Second inductance
Second end is connected with the 3rd IGBT first end and the 4th IGBT first end respectively；Second end of the 3rd inductance is respectively with the 5th
IGBT first end connects with the 6th IGBT first end；First IGBT the second end, the 3rd IGBT the second end and the 5th
Positive pole of IGBT the second end with the first electric capacity is connected；2nd IGBT the second end, the 4th IGBT the second end and the 6th
IGBT the second end is connected with the negative pole and energy-storage travelling wave tube 10132 of the first electric capacity.
Optionally, energy-storage travelling wave tube 10132 is at least one of lithium battery and electric capacity.
Example, in embodiments of the present invention, energy-storage travelling wave tube 10132 can be lithium battery, or electric capacity, certainly,
It can also be the combination of lithium battery and electric capacity, can be specifically configured according to being actually needed, here, for energy-storage travelling wave tube
10132 be specifically what, and the embodiment of the present invention is not done and further limited.
By setting DC/DC translation circuits 10131 and energy-storage travelling wave tube 10132 so that be more than vehicle in the electric energy of solar energy
Operation needed for electric energy when, can by DC/DC translation circuits 10131 by beyond direct current 750V or direct current 1500V electric energy
The electric energy of the first DC voltage is converted to, and by the power storage of the first DC voltage to energy-storage travelling wave tube 10132, so that in the sun
It is straight by stored in the energy-storage travelling wave tube 10132 first when electric energy caused by energy is insufficient for the electric energy needed for vehicle operation
The electric energy for flowing voltage provides required electric energy for vehicle operation, and caused vehicle can not be run when avoiding electricity shortage, and then
Improve vehicle reliability of operation.In addition, the DC/DC translation circuits 10131 can also will in vehicle braking procedure caused by
The electric energy of DC voltage is converted to the electric energy of the first DC voltage, and by the power storage of the first DC voltage to energy-storage travelling wave tube
10132, equally when electric energy caused by solar energy is insufficient for the electric energy needed for vehicle operation, pass through the energy-storage travelling wave tube
The electric energy of the first DC voltage stored in 10132 provides required electric energy for vehicle operation.
Based on embodiment corresponding to Fig. 1, optionally, booster circuit 1012 can be BOOST circuits, and BOOST circuits use
Triple Boost conversion, three Boost sub-circuits are connected in parallel, full symmetric in structure, are referred to described in Fig. 4, Fig. 4 is
A kind of structural representation of BOOST circuits provided in an embodiment of the present invention, certainly, the embodiment of the present invention simply enter by taking Fig. 4 as an example
Row explanation, but do not represent that present invention is limited only by this.The BOOST circuits can include：
4th inductance, the 5th inductance, the 6th inductance, the first diode, the second diode, the 3rd diode, the 7th IGBT,
8th IGBT, the 9th IGBT and the second electric capacity；
Wherein, the first end of the first end of the 4th inductance, the first end of the 5th inductance and the 6th inductance is and solar panels
1011 positive pole connection；Second end of the 4th inductance connects with the input of the first diode and the 7th IGBT first end respectively
Connect；Second end of the 5th inductance is connected with the input of the second diode and the 8th IGBT first end respectively；6th inductance
Second end is connected with the input of the 3rd diode and the 9th IGBT first end respectively；The output end of first diode, second
The first end of the output end of diode and the output end of the 3rd diode with the second electric capacity is connected；7th IGBT the second end,
8th IGBT the second end and the 9th IGBT the second end connect with the negative pole of solar panels 1011 and the second end of the second electric capacity
Connect.
By the BOOST circuits, boosting processing can be carried out to the electric energy of DC voltage caused by solar panels 1011, obtained
To direct current 750V or direct current 1500V electric energy, so as to be provided by direct current 750V or direct current 1500V electric energy for vehicle operation
Required electric energy, avoid to the circuit company for providing external power grid and pay the substantial amounts of electricity charge, so as to reduce urban track traffic
Operation cost.
Based on any of the above-described embodiment, further, photovoltaic energy storage type DC traction power-supply system 10 also includes middle pressure ring
Net 102 and main transformer station 103, traction power transformation circuit 101 also include rectification circuit 1014；Shown in Figure 5, Fig. 5 is this hair
The structural representation for another photovoltaic energy storage type DC traction power-supply system 10 that bright embodiment provides, certainly, the present invention are implemented
Example simply illustrates by taking Fig. 5 as an example, but does not represent that present invention is limited only by this.The photovoltaic energy storage type direct-current traction power supply system
System 10 can also include：
The output end of main transformer station 103 is connected by middle pressure ring net 102 with the first end of rectification circuit 1014；Rectification circuit
1014 the second end is connected with the input of vehicle electric energy.
Main transformer station 103 is used to carry out decompression processing to the electric energy of the initial alternating voltage of outside input, obtains default friendship
The electric energy of voltage is flowed, and is transmitted the electric energy of default alternating voltage to rectification circuit 1014 by middle pressure ring net 102.
Rectification circuit 1014 is used to carry out step-down rectifier processing to the electric energy for presetting alternating voltage, obtains predetermined DC voltage
Electric energy, and the electric energy of predetermined DC voltage is inputted to the input of vehicle electric energy.
Example, the voltage of initial alternating voltage can be 110kV, and the initial alternating voltage of the 110kV can be by dispatch from foreign news agency
Source provides, and certainly, the embodiment of the present invention simply illustrates so that the voltage of initial alternating voltage can be 110kV as an example, but simultaneously
Do not represent that present invention is limited only by this.
Example, in embodiments of the present invention, by setting main transformer station 103 and rectification circuit 1014, its object is to：
Exchange 110kV that can be to outside input electric energy carries out decompression processing, obtains exchanging 35kV electric energy, and passes through middle pressure ring net
Exchange 35kV electric energy is transmitted to rectification circuit 1014, rectification circuit 1014 exchange 35kV electric energy is dropped by 102
Repoussage stream process, direct current 750V or direct current 1500V electric energy are obtained, and direct current 750V or direct current 1500V electric energy are inputted
To the input of vehicle electric energy, it is not enough to completely in electric energy caused by solar energy and the electric energy in energy-storage travelling wave tube 10132 so as to realize
When sufficient vehicle runs required electric energy, pass through the main transformer station 103 and rectification circuit 1014 and required electric energy is provided to vehicle.
Optionally, in embodiments of the present invention, rectification circuit 1014 can be diode rectification unit circuit, refer to figure
Shown in 6, Fig. 6 is a kind of structural representation of diode rectification unit circuit provided in an embodiment of the present invention, and certainly, the present invention is real
Apply example simply to illustrate by taking Fig. 6 as an example, but do not represent that present invention is limited only by this.The diode rectification unit circuit can be with
Including：
First three winding phase-shifting transformer, the second three winding phase-shifting transformer, the first diode rectifier, the second diode
Rectifier；3rd diode rectifier and the 4th diode rectifier.
Wherein, the first end of the first three winding phase-shifting transformer and the first end of the second three winding phase-shifting transformer are with
Pressure ring net 102 connects；Second end of the first three winding phase-shifting transformer is connected with the first end of the first diode rectifier；First
3rd end of three winding phase-shifting transformer is connected with the first end of the second diode rectifier；Second three winding phase-shifting transformer
Second end is connected with the first end of the 3rd diode rectifier；3rd end of the second three winding phase-shifting transformer and the 4th diode
The first end connection of rectifier；Second end of the first diode rectifier the second end with the second diode rectifier, respectively
Second end of three diode rectifiers and the second end connection of the 4th diode rectifier；3rd end of the first diode rectifier
The of the 3rd end with the second diode rectifier, the 3rd end of the 3rd diode rectifier and the 4th diode rectifier respectively
Three-terminal link.
Based on any of the above-described embodiment, optionally, the photovoltaic energy storage type DC traction power-supply system 10 can also include：
Contact net 104, booster circuit 1012 are connected by contact net 104 with the input of vehicle electric energy, and contact net 104 is
Rigid contact net 104 or rigid suspension OCS 104.
Example, in embodiments of the present invention, by setting contact net 104, its object is to：So that booster circuit 1012
Required electric energy can be provided to vehicle by the contact net 104, it is of course also possible to which so that rectification circuit 1014 passes through the contact
Net 104 provides required electric energy to vehicle.
In actual application, the electric energy of DC voltage can be first produced by solar panel, then by BOOST circuits to too
It is positive to carry out boosting processing by the electric energy of DC voltage caused by plate 1011, direct current 750V or direct current 1500V electric energy are obtained, so as to
Required electric energy is provided for vehicle operation by direct current 750V or direct current 1500V electric energy, reduces urban track traffic
Operation cost, meanwhile, can by DC/DC translation circuits 10131 when the electric energy of solar energy is more than the electric energy needed for vehicle operation
With by beyond direct current 750V or direct current 1500V electric energy be converted to the electric energy of the first DC voltage, and pass through energy-storage travelling wave tube
10132 store the electric energy of first DC voltage；So as to be insufficient in electric energy caused by solar energy needed for vehicle operation
During electric energy, required electric energy is provided for vehicle operation by the electric energy of the first DC voltage stored in the energy-storage travelling wave tube 10132,
Caused vehicle can not be run when avoiding electricity shortage, and then improve vehicle reliability of operation.In addition, pass through main transformer electricity
103 can be to outside input exchange 110kV electric energy carry out decompression processing, obtain exchanging 35kV electric energy, and in
Pressure ring net 102 transmits exchange 35kV electric energy to diode rectification unit circuit, and the diode rectification unit circuit is to this
The electric energy for exchanging 35kV carries out step-down rectifier processing, obtains direct current 750V or direct current 1500V electric energy, and by direct current 750V or
Direct current 1500V electric energy is inputted to the input of vehicle electric energy, and car is insufficient in electric energy caused by solar energy so as to realize
During electric energy needed for operation, pass through the main transformer station 103 and rectification circuit 1014 provided to vehicle needed for electric energy.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice invention disclosed herein
Its embodiment.It is contemplated that cover any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledges in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by following
Claims are pointed out.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present disclosure is only limited by appended claims
System.
Claims (10)
- A kind of 1. photovoltaic energy storage type DC traction power-supply system, it is characterised in that including：At least two traction power transformation circuits, at least two traction power transformations circuit in parallel are set；Each described traction power transformation Circuit includes solar panels, booster circuit and accumulator；Wherein, the solar panels are connected with the first end of the booster circuit；Second end of the booster circuit respectively with car The input of electric energy connects with the input of the accumulator；The booster circuit is used to carry out boosting processing to the electric energy of DC voltage caused by the solar energy, obtains predetermined DC The electric energy of voltage, and the electric energy of the predetermined DC voltage is inputted to the input of the vehicle electric energy；The accumulator is used for when the electric energy of the predetermined DC voltage is more than the electric energy needed for vehicle operation, will be super The electric energy of the predetermined DC voltage gone out is converted to the electric energy of the first DC voltage, and stores the electric energy of first DC voltage； So that in the electric energy deficiency of DC voltage caused by the solar energy, required electric energy is provided for vehicle operation.
- 2. system according to claim 1, it is characterised in that the accumulator includes：DC-DC DC/DC translation circuits and energy-storage travelling wave tube；Wherein, the first end of the DC/DC translation circuits is connected with the second end of the booster circuit；The DC/DC conversion electricity Second end on road is connected with the input of the energy-storage travelling wave tube.
- 3. system according to claim 2, it is characterised in that the DC/DC translation circuits include：First inductance, the second inductance, the 3rd inductance, the first insulated gate bipolar transistor IGBT, the 2nd IGBT, the 3rd IGBT, 4th IGBT, the 5th IGBT, the 6th IGBT and the first electric capacity；The first end of the first end of first inductance, the first end of second inductance and the 3rd inductance with the storage Can element connection；Second end of first inductance respectively with the first end of the first IGBT and the 2nd IGBT first End connection；Second end of second inductance connects with the first end of the 3rd IGBT and the first end of the 4th IGBT respectively Connect；Second end of the 3rd inductance is connected with the first end of the 5th IGBT and the first end of the 6th IGBT respectively； Second end at the second end of the first IGBT, the second end of the 3rd IGBT and the 5th IGBT is electric with described first The positive pole connection of appearance；The second end, the second end of the 4th IGBT and the second end of the 6th IGBT of 2nd IGBT It is connected with the negative pole of first electric capacity and the energy-storage travelling wave tube.
- 4. system according to claim 1, it is characterised in thatThe booster circuit is BOOST circuits.
- 5. system according to claim 4, it is characterised in that the BOOST circuits include：4th inductance, the 5th inductance, the 6th inductance, the first diode, the second diode, the 3rd diode, the 7th IGBT, the 8th IGBT, the 9th IGBT and the second electric capacity；Wherein, the first end of the first end of the 4th inductance, the first end of the 5th inductance and the 6th inductance with The positive pole connection of the solar panels；Second end of the 4th inductance respectively with the input of first diode and described 7th IGBT first end connection；Second end of the 5th inductance respectively with the input of second diode and described Eight IGBT first end connection；Second end of the 6th inductance input and the described 9th with the 3rd diode respectively IGBT first end connection；The output end of first diode, the output end of second diode and the three or two pole First end of the output end of pipe with second electric capacity is connected；The second end of 7th IGBT, the of the 8th IGBT Two ends and the second end of the 9th IGBT are connected with the negative pole of the solar panels and the second end of second electric capacity.
- 6. system according to claim 1, it is characterised in that the photovoltaic energy storage type DC traction power-supply system also includes Middle pressure ring net and main transformer station, the traction power transformation circuit also include rectification circuit；Wherein, the output end of the main transformer station is connected by the first end of medium pressure looped network and rectification circuit；The rectification Second end of circuit is connected with the input of the vehicle electric energy；Main transformer station is used to carry out decompression processing to the electric energy of the initial alternating voltage of outside input, obtains default alternating voltage Electric energy, and transmitted the electric energy of the default alternating voltage to the rectification circuit by medium pressure looped network；The rectification circuit is used to carry out step-down rectifier processing to the electric energy of the default alternating voltage, obtains predetermined DC voltage Electric energy, and the electric energy of the predetermined DC voltage is inputted to the input of the vehicle electric energy.
- 7. system according to claim 6, it is characterised in thatThe rectification circuit is diode rectification unit circuit.
- 8. system according to claim 7, it is characterised in that the diode rectification unit circuit includes：First three winding phase-shifting transformer, the second three winding phase-shifting transformer, the first diode rectifier, the second diode rectification Device；3rd diode rectifier and the 4th diode rectifier；Wherein, the first end of the first three winding phase-shifting transformer and the first end of the second three winding phase-shifting transformer be and institute State middle pressure ring net connection；Second end of the first three winding phase-shifting transformer and the first end of first diode rectifier Connection；3rd end of the first three winding phase-shifting transformer is connected with the first end of second diode rectifier；It is described Second end of the second three winding phase-shifting transformer is connected with the first end of the 3rd diode rectifier；Second three winding 3rd end of phase-shifting transformer is connected with the first end of the 4th diode rectifier；The of first diode rectifier Two ends the second end with second diode rectifier, the second end and the described 4th of the 3rd diode rectifier respectively The second end connection of diode rectifier；3rd end of first diode rectifier respectively with second diode rectification The 3rd end, the 3rd end of the 3rd diode rectifier and the three-terminal link of the 4th diode rectifier of device.
- 9. according to the system described in claim any one of 1-8, it is characterised in that also include：Contact net, the booster circuit are connected by the contact net with the input of the vehicle electric energy, and the contact net is Rigid contact net or rigid suspension OCS.
- 10. system according to claim 2, it is characterised in thatThe energy-storage travelling wave tube is at least one of lithium battery and electric capacity.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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