CN113644752A - Railway vehicle power supply system - Google Patents
Railway vehicle power supply system Download PDFInfo
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- CN113644752A CN113644752A CN202110871149.7A CN202110871149A CN113644752A CN 113644752 A CN113644752 A CN 113644752A CN 202110871149 A CN202110871149 A CN 202110871149A CN 113644752 A CN113644752 A CN 113644752A
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- 238000004146 energy storage Methods 0.000 claims abstract description 97
- 239000003990 capacitor Substances 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009351 contact transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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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
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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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
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
Abstract
The invention discloses a railway vehicle power supply system, which comprises a ground power supply device and a vehicle-mounted receiving device which are connected, wherein the ground power supply device supplies power to the vehicle-mounted receiving device, and the vehicle-mounted receiving device supplies power to a load circuit of a railway vehicle; the vehicle-mounted receiving device comprises an electric energy receiving assembly and an electric energy storage assembly which are electrically connected, the electric energy receiving assembly is used for receiving electric energy provided by the ground power supply device, and the electric energy storage assembly is used for storing the electric energy received by the electric energy receiving assembly; the electric energy storage assembly comprises a first electric energy storage device and a second electric energy storage device which are electrically connected, the first electric energy storage device is used for storing the electric energy received by the electric energy receiving assembly, and the second electric energy storage device is used for unloading the electric energy stored by the first electric energy storage device. The application can realize the quick charge of the train and increase the electric quantity stored in the train.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a power supply system for a railway vehicle.
Background
Along with the acceleration and heavy-load operation of railway freight, the real-time monitoring of the operation state of the freight train is very important, but because the carriages of the railway freight train are not supplied with power, the monitoring of the operation state of the freight train cannot be completed by utilizing vehicle-mounted data acquisition equipment. Therefore, how to supply power to the railway freight train is a problem to be solved urgently.
Disclosure of Invention
The embodiment of the application solves the technical problem of how to charge the railway train in the prior art by providing the railway vehicle power supply system, and realizes the technical effect of charging the railway train.
The application provides a railway vehicle power supply system which comprises a ground power supply device and a vehicle-mounted receiving device, wherein the ground power supply device and the vehicle-mounted receiving device are connected;
the vehicle-mounted receiving device comprises an electric energy receiving assembly and an electric energy storage assembly which are electrically connected, the electric energy receiving assembly is used for receiving electric energy provided by the ground power supply device, and the electric energy storage assembly is used for storing the electric energy received by the electric energy receiving assembly;
the electric energy storage assembly comprises a first electric energy storage device and a second electric energy storage device which are electrically connected, the first electric energy storage device is used for storing the electric energy received by the electric energy receiving assembly, and the second electric energy storage device is used for unloading the electric energy stored by the first electric energy storage device.
Furthermore, the ground power supply device comprises a ground power supply assembly and a transmitting coil which are connected, wherein the transmitting coil is used for generating an alternating magnetic field according to the electric energy provided by the ground power supply assembly;
the power receiving assembly comprises a receiving coil, and the receiving coil is used for receiving the power provided by the ground power supply device through the alternating magnetic field.
Further, the number of the transmitting coils is plural;
the transmitting coils are arranged on the track in parallel along the laying direction of the track and used for generating an alternating magnetic field according to the electric energy provided by the ground power supply assembly when a railway vehicle runs or is static along the track, so that the receiving coils can receive the electric energy provided by the ground power supply device through the alternating magnetic field.
Further, the power receiving assembly further includes:
the vehicle-mounted rectifier is electrically connected with the receiving coil and the direct current converter and used for converting the electric energy received by the receiving coil to obtain direct current with a first preset voltage value;
and the direct current converter is electrically connected with the electric energy storage assembly and is used for converting the direct current with the first preset voltage value into the direct current with preset parameters so as to supply the electric energy storage assembly to store the direct current with the preset parameters.
Further, the power receiving assembly further includes:
and the secondary compensation circuit is respectively and electrically connected with the receiving coil and the vehicle-mounted rectifier and is used for matching the resonance frequency of the receiving coil.
Further, the ground power supply assembly includes:
the ground rectifier is connected with the power grid and the booster and used for converting the alternating current of the power grid into direct current with preset frequency;
the booster is connected with the inverter and used for boosting the direct current with the preset frequency to obtain high-voltage direct current with a second preset voltage value;
and the inverter is used for converting the high-voltage direct current into target alternating current so as to enable the transmitting coil to generate an alternating magnetic field according to the target alternating current.
Further, the ground power supply assembly further comprises:
and the primary compensation circuit is electrically connected with the inverter and the transmitting coil respectively and is used for matching the resonant frequency of the transmitting coil.
Further, the system further comprises:
the power supply driving equipment is connected with the Buck converter and the load circuit and is used for acquiring power consumption parameters of the load circuit;
and the Buck converter is connected with the electric energy storage assembly and the load circuit and used for converting the electric energy provided by the electric energy storage assembly into the electric energy meeting the power consumption parameters and supplying power to the load circuit.
Further, the system further comprises:
the operation parameter acquisition equipment is connected with the ground power supply device, the vehicle-mounted receiving device and the load circuit and used for acquiring operation parameters of the vehicle-mounted receiving device and the load circuit and transmitting the operation parameters to the ground power supply device, so that the ground power supply device is matched with the vehicle-mounted receiving device.
Further, the first electrical energy storage device includes a super capacitor and the second electrical energy storage device includes a lithium battery.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the electric energy receiving assembly in the vehicle-mounted receiving device is used for receiving the electric energy transmitted by the ground power supply device, the electric energy storage assembly in the vehicle-mounted receiving device is used for storing, the electric energy storage assembly is used for rapidly receiving the electric energy from the electric energy receiving assembly by relying on the first electric energy storage device, and the second electric energy storage device is used for transferring the first electric energy storage device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a railway vehicle power supply system provided herein;
FIG. 2 is a schematic illustration of another railway vehicle power supply system provided herein;
fig. 3 is a schematic structural diagram of wireless transmission provided in the present application;
FIG. 4 is a schematic illustration of another railway vehicle power supply system provided herein;
fig. 5 is a schematic structural diagram of another railway vehicle power supply system provided by the present application.
Detailed Description
The embodiment of the application solves the technical problem of how to charge the railway train in the prior art by providing the railway train power supply system.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
a power supply system for railway vehicles comprises a ground power supply device and a vehicle-mounted receiving device which are connected, wherein the ground power supply device supplies power to the vehicle-mounted receiving device, and the vehicle-mounted receiving device supplies power to a load circuit of a railway vehicle; the vehicle-mounted receiving device comprises an electric energy receiving assembly and an electric energy storage assembly which are electrically connected, the electric energy receiving assembly is used for receiving electric energy provided by the ground power supply device, and the electric energy storage assembly is used for storing the electric energy received by the electric energy receiving assembly; the electrical energy storage assembly includes a first electrical energy storage device and a second electrical energy storage device electrically connected, the first electrical energy storage device for storing electrical energy received by the electrical energy receiving assembly, the second electrical energy storage device for storing electrical energy stored by the first electrical energy storage device.
The electric energy receiving assembly in the vehicle-mounted receiving device is used for receiving the electric energy transmitted by the ground power supply device, the electric energy storage assembly in the vehicle-mounted receiving device is used for storing, the electric energy storage assembly is used for rapidly receiving the electric energy from the electric energy receiving assembly by relying on the first electric energy storage device, and the second electric energy storage device is used for transferring the first electric energy storage device.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the related art, the power supply modes of the railway train are more, and include concentrated power supply of the train, shaft drive power generation, solar power supply and the like. However, the train centralized power supply mode needs a train cable penetrating through the whole train, and needs to correspondingly modify the train, so that the problems of complex and tedious power supply exist. Shaft-driven power generation, including shaft end power generation and shaft end belt transmission power generation, wherein a related engine needs to be installed on a shaft end or a side frame of a bogie, the shaft end and the side frame are extremely sensitive to vibration, and the vibration is inevitable when a train runs, so that the reliability of the engine is poor, and the service life of the engine is short; in addition, the shaft drive power generation is adopted, and the traction power of the train is used as an energy source, so that the running efficiency of the train is influenced. The solar power supply is influenced by train running lines and weather, and the use is limited. Therefore, how to supply power to a railway freight train is still a problem to be solved urgently.
In order to solve the above technical problem, the present embodiment provides a railway vehicle power supply system as shown in fig. 1, which includes a ground power supply device and an on-board receiving device connected to each other, wherein the ground power supply device supplies power to the on-board receiving device, and the on-board receiving device supplies power to a load circuit of a railway vehicle.
The ground power supply device is arranged on the ground, such as on a train platform, near a track or on the track. The vehicle-mounted receiving device is arranged on the train. When the train with the vehicle-mounted receiving device is close to the position of the ground power supply device, the ground power supply device supplies power to the vehicle-mounted receiving device. The charging mode between the ground power supply device and the vehicle-mounted receiving device can be a wired connection mode or a wireless link mode.
Specifically, the vehicle-mounted receiving device comprises an electric energy receiving assembly and an electric energy storage assembly which are electrically connected, the electric energy receiving assembly is used for receiving electric energy provided by the ground power supply device, and the electric energy storage assembly is used for storing the electric energy received by the electric energy receiving assembly.
The electric energy receiving assembly directly receives the electric energy transmitted by the ground power supply device, processes the received electric energy and transmits the electric energy to the electric energy storage assembly for storage.
The electric energy storage assembly comprises a first electric energy storage device and a second electric energy storage device which are electrically connected, the first electric energy storage device is used for storing the electric energy received by the electric energy receiving assembly, the second electric energy storage device is used for unloading the electric energy stored by the first electric energy storage device, the first electric energy storage device stores the electric energy at a first preset power, and the second electric energy storage device stores the electric energy at a second preset power.
The electric energy storage assembly adopts a two-stage electric energy storage mode, namely, the first electric energy storage device is used for carrying out one-stage storage on the electric energy received by the electric energy receiving assembly, and then the second electric energy storage device is used for transferring and storing the electric energy in the first electric energy storage device. When the train charging time is sufficient, the first electric energy storage device and the second electric energy storage device can be fully charged, so that the cruising ability of the train is prolonged; when the train charging time is insufficient, the train can be charged through efficient charging of the first electric energy storage device.
The length of time that the train is charged is directly related to the efficiency of charging the first electrical energy storage device, and the higher the efficiency of charging the first electrical energy storage device (i.e., the efficiency of storing electrical energy), the shorter the time that the train is charged. The train belongs to a rail vehicle, the time distribution of using the rail is strict and limited, and further, the shorter the time for charging the train is, the shorter the occupation of the rail is, and the more beneficial the working efficiency and the matching among the trains on the rail are. Therefore, in general, the first electrical energy storage device employs a fast charging technology, such as a high-power fast charging mode, a high-current fast charging mode, a direct-current fast charging mode, and the like. The second electrical energy storage device may also be charged using a fast charge technique as the first electrical energy storage device.
Wherein the first electrical energy storage device may comprise a super capacitor. The super capacitor can realize quick charging, but because the super capacitor can not store electric energy for a long time, the electric energy in the super capacitor needs to be timely stored. The second electrical energy storage device may include a lithium battery. The second electrical energy storage device is capable of storing electrical energy for a long period of time, and electrical energy in the first electrical energy storage device may be dumped.
The electric energy receiving assembly in the vehicle-mounted receiving device is used for receiving the electric energy transmitted by the ground power supply device, the electric energy storage assembly in the vehicle-mounted receiving device is used for storing, the electric energy storage assembly is used for rapidly receiving the electric energy from the electric energy receiving assembly by relying on the first electric energy storage device, and the second electric energy storage device is used for transferring the first electric energy storage device.
And the train can be charged to the first electric energy storage device in a short time by fully utilizing the time period of train parking in a train inspection or unloading in an unloading yard, so that the laying length of a charging road is reduced, after the train leaves the charging road, the first electric energy storage device can directly supply power to a load circuit, and simultaneously can charge the second electric energy storage device, so that long-term storage of electric energy is realized, the power consumption of the train in a long running period is further met, the train develops towards electrification and intellectualization, and the development requirement of railway freight equipment for realizing technical upgrading is met.
On the basis of fig. 1, there is provided a railway vehicle power supply system as shown in fig. 2, the ground power supply device comprises a ground power supply assembly and a transmitting coil which are connected, and the transmitting coil is used for generating an alternating magnetic field according to the electric energy provided by the ground power supply assembly. The power receiving assembly comprises a receiving coil, and the receiving coil is used for receiving the power provided by the ground power supply device through the alternating magnetic field.
The ground power supply device is provided with the transmitting coil, the vehicle-mounted receiving device is provided with the receiving coil, the transmitting coil converts the electric energy of the ground power supply assembly into the alternating magnetic field, and the receiving coil induces alternating current through the alternating magnetic field, so that non-contact transmission, namely wireless transmission, of the electric energy is realized.
In practical application, a plurality of transmitting coils can be arranged, the plurality of transmitting coils are arranged on the track in parallel along the laying direction of the track, and the receiving coils are arranged on the train. That is, a plurality of transmitting coils are distributed along the track (the region with the transmitting coils is called as a charging region), and the length of the charging region can be determined according to actual conditions. As shown in fig. 3, when the train runs along the track or is stationary, the receiving coil arranged on the train passes through the alternating magnetic field area generated by the transmitting coil, thereby realizing the non-contact transmission of energy.
Specifically, when the charging area of the train on the track is static, the length of the charging area can be short, wireless charging can be achieved as long as the receiving coil is located in the charging area, and the problem that the train is difficult to align with the charging position can be solved.
When the train runs on the track, in order to guarantee the charging time, the length of the charging area is long, the receiving coils move along with the train and pass through the alternating magnetic field area generated by each transmitting coil one by one, and then charging is achieved. For example, the plurality of transmitting coils are arranged in sequence as a transmitting coil a, a transmitting coil B and a transmitting coil C. The train moves from the transmitting coil A to the transmitting coil C, and when the receiving coil is positioned in the alternating magnetic field area A of the transmitting coil A, the transmitting coil A provides electric energy for the receiving coil; when the receiving coil leaves the alternating magnetic field area A and enters the alternating magnetic field area B of the transmitting coil B, the transmitting coil B provides electric energy for the receiving coil; when the receiving coil leaves the alternating magnetic field area B and enters the alternating magnetic field area C of the transmitting coil C, the transmitting coil C supplies electric energy to the receiving coil.
The embodiment realizes wireless electric energy transmission through the magnetic coupling between the receiving coil and the transmitting coil, avoids the complexity of wired connection charging, also reduces the length of charging road laying, and can make full use of the train to realize wireless quick charging to the train by adopting a power supply mode of dynamic and static combination in the time period of train inspection parking or unloading in an unloading yard, even slow running speed. On the one hand, the laying length of the charging road can be reduced, on the other hand, the charging efficiency is also improved, the electric energy storage of the train can be increased, and the endurance mileage of the train is prolonged.
On the basis of fig. 2, as shown in fig. 4, the power receiving assembly further includes: and the secondary compensation circuit is respectively and electrically connected with the receiving coil and the vehicle-mounted rectifier and is used for adjusting the resonance frequency of the receiving coil. The vehicle-mounted rectifier is electrically connected with the receiving coil and the direct current converter and used for converting the electric energy received by the receiving coil to obtain direct current with a first preset voltage value; and the direct current converter is electrically connected with the electric energy storage assembly and is used for converting the direct current with the first preset voltage value into the direct current with preset parameters so as to supply the electric energy storage assembly to store the direct current with the preset parameters.
As shown in fig. 4, the ground power supply assembly includes: the ground rectifier is connected with the power grid and the booster and used for converting the alternating current of the power grid into direct current with preset frequency; the booster is connected with the inverter and used for boosting the direct current with the preset frequency to obtain high-voltage direct current with a second preset voltage value; and the inverter is used for converting the high-voltage direct current into target alternating current so as to enable the transmitting coil to generate an alternating magnetic field according to the target alternating current. And the primary compensation circuit is electrically connected with the inverter and the transmitting coil respectively and used for adjusting the resonant frequency of the transmitting coil.
The primary compensation circuit and the secondary compensation circuit select and match inductance and capacitance parameters, so that the power supply system provided by the embodiment achieves the highest charging efficiency. By matching the inductors, the transmitting coil and the receiving coil are matched with the same resonant frequency, and meanwhile, the driving frequency of the power supply system can be matched, so that the transmission efficiency of the power supply system can be the highest.
The ground rectifier converts alternating current of a power grid into direct current, the booster boosts the direct current to obtain high-voltage direct current, the inverter converts the high-voltage direct current into target alternating current, and an alternating magnetic field is generated through the transmitting coil. The higher the frequency of the target alternating current, the higher the efficiency of energy transfer between the transmitting coil and the receiving coil.
The vehicle-mounted rectifier processes the electric energy received by the receiving coil and converts alternating current into direct current; the direct current converter performs voltage conversion on the direct current, so that the direct current meets the storage requirement of the electric energy storage assembly.
As shown in fig. 5, the power supply system further includes:
the power supply driving equipment is connected with the Buck converter and the load circuit and is used for acquiring power consumption parameters of the load circuit; the electricity utilization parameters comprise voltage, current, power and other parameters.
And the Buck converter is connected with the electric energy storage assembly and the load circuit and used for converting the electric energy provided by the electric energy storage assembly into the electric energy meeting the power consumption parameters and supplying power to the load circuit.
The operation parameter acquisition equipment is connected with the ground power supply device, the vehicle-mounted receiving device and the load circuit and used for acquiring operation parameters of the vehicle-mounted receiving device and the load circuit and transmitting the operation parameters to the ground power supply device, so that the ground power supply device is matched with the vehicle-mounted receiving device.
This embodiment passes through power drive equipment monitoring load circuit's power consumption parameter, and then makes the Buck converter with the electric energy conversion in the electric energy storage component have the electric energy of power consumption parameter correspondingly, load circuit alright with direct power consumption, can avoid because the unsuitable condition of electric energy parameter leads to load circuit trouble or shortens load circuit's life to take place.
The embodiment monitors the operation parameters of each device in the vehicle-mounted receiving device through the operation parameter acquisition device and feeds the operation parameters back to the ground power supply device, so that the matching degree between the ground power supply device and the vehicle-mounted receiving device can be improved, on one hand, the normal operation of the system can be ensured, and on the other hand, the charging efficiency can be improved.
Since the electronic device described in this embodiment is an electronic device used for implementing the method for processing information in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various variations thereof based on the method for processing information described in this embodiment, and therefore, how to implement the method in this embodiment by the electronic device is not described in detail here. Electronic devices used by those skilled in the art to implement the method for processing information in the embodiments of the present application are all within the scope of the present application.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A railway vehicle power supply system is characterized by comprising a ground power supply device and a vehicle-mounted receiving device which are connected, wherein the ground power supply device supplies power to the vehicle-mounted receiving device, and the vehicle-mounted receiving device supplies power to a load circuit of a railway vehicle;
the vehicle-mounted receiving device comprises an electric energy receiving assembly and an electric energy storage assembly which are electrically connected, the electric energy receiving assembly is used for receiving the electric energy provided by the ground power supply device, and the electric energy storage assembly is used for storing the electric energy received by the electric energy receiving assembly;
the electric energy storage assembly comprises a first electric energy storage device and a second electric energy storage device which are electrically connected, the first electric energy storage device is used for storing the electric energy received by the electric energy receiving assembly, and the second electric energy storage device is used for unloading the electric energy stored by the first electric energy storage device.
2. The system of claim 1, wherein the ground power supply comprises a ground power supply assembly and a transmitting coil connected to generate an alternating magnetic field from the electrical energy provided by the ground power supply assembly;
the power receiving assembly comprises a receiving coil, and the receiving coil is used for receiving the power provided by the ground power supply device through an alternating magnetic field.
3. The system of claim 2, wherein the number of the transmitting coils is plural, and wherein plural transmitting coils are arranged in parallel on the rail in the track laying direction, and are configured to generate an alternating magnetic field according to the electric energy supplied by the ground power supply assembly when the railway vehicle runs along the rail or is stationary, so that the receiving coil receives the electric energy supplied by the ground power supply device through the alternating magnetic field.
4. The system of claim 2, wherein the power receiving assembly further comprises:
the vehicle-mounted rectifier is electrically connected with the receiving coil and the direct current converter and used for converting the electric energy received by the receiving coil to obtain direct current with a first preset voltage value;
the direct current converter is electrically connected with the electric energy storage assembly and used for converting the direct current with the first preset voltage value into direct current with preset parameters so that the electric energy storage assembly can store the direct current with the preset parameters.
5. The system of claim 4, wherein the power receiving assembly further comprises:
and the secondary compensation circuit is respectively and electrically connected with the receiving coil and the vehicle-mounted rectifier and is used for adjusting the resonance frequency of the receiving coil.
6. The system of claim 2, wherein the ground power assembly comprises:
the ground rectifier is connected with the power grid and the booster and used for converting the alternating current of the power grid into direct current with preset frequency;
the booster is connected with the inverter and used for boosting the direct current with the preset frequency to obtain high-voltage direct current with a second preset voltage value;
the inverter is used for converting the high-voltage direct current into target alternating current so that the transmitting coil can generate an alternating magnetic field according to the target alternating current.
7. The system of claim 6, wherein the ground power assembly further comprises:
and the primary compensation circuit is electrically connected with the inverter and the transmitting coil respectively and used for adjusting the resonant frequency of the transmitting coil.
8. The system of claim 1, further comprising:
the power supply driving equipment is connected with the Buck converter and the load circuit and is used for acquiring power consumption parameters of the load circuit;
the Buck converter is connected with the electric energy storage assembly and the load circuit and used for converting the electric energy provided by the electric energy storage assembly into electric energy conforming to the electricity utilization parameters and supplying power to the load circuit.
9. The system of claim 1, further comprising:
and the operation parameter acquisition equipment is connected with the ground power supply device, the vehicle-mounted receiving device and the load circuit, and is used for acquiring the operation parameters of the vehicle-mounted receiving device and the load circuit and transmitting the operation parameters to the ground power supply device, so that the ground power supply device is matched with the vehicle-mounted receiving device.
10. The system of claim 1, wherein the first electrical energy storage device comprises a super capacitor and the second electrical energy storage device comprises a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871149.7A CN113644752A (en) | 2021-07-30 | 2021-07-30 | Railway vehicle power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871149.7A CN113644752A (en) | 2021-07-30 | 2021-07-30 | Railway vehicle power supply system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633748A (en) * | 2013-11-12 | 2014-03-12 | 天津工业大学 | Wireless power supply system for electromagnetic resonance type railway locomotive |
| CN104113120A (en) * | 2014-07-31 | 2014-10-22 | 奇瑞汽车股份有限公司 | Wireless charging system and electric vehicle |
| CN107128196A (en) * | 2017-05-17 | 2017-09-05 | 安徽理工大学 | mining electric locomotive wireless power supply system |
| KR20180092203A (en) * | 2017-02-08 | 2018-08-17 | (주)메트로텍 | Energy storage apparatus to stabilize power based on wireless power supply for railway vehicles |
| CN112248821A (en) * | 2020-09-28 | 2021-01-22 | 中车青岛四方车辆研究所有限公司 | Power distribution method of non-contact traction power supply system of energy storage type rail train |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633748A (en) * | 2013-11-12 | 2014-03-12 | 天津工业大学 | Wireless power supply system for electromagnetic resonance type railway locomotive |
| CN104113120A (en) * | 2014-07-31 | 2014-10-22 | 奇瑞汽车股份有限公司 | Wireless charging system and electric vehicle |
| KR20180092203A (en) * | 2017-02-08 | 2018-08-17 | (주)메트로텍 | Energy storage apparatus to stabilize power based on wireless power supply for railway vehicles |
| CN107128196A (en) * | 2017-05-17 | 2017-09-05 | 安徽理工大学 | mining electric locomotive wireless power supply system |
| CN112248821A (en) * | 2020-09-28 | 2021-01-22 | 中车青岛四方车辆研究所有限公司 | Power distribution method of non-contact traction power supply system of energy storage type rail train |
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