JP3911621B2 - Railway system for battery-powered trains - Google Patents

Abstract

PROBLEM TO BE SOLVED: To balance an organized rolling stock, improve redundancy attributed to operation, and reduce battery capacity in the organized rolling stock with a battery-driven and inverter-controlled car connected as a train, and to provide provide the most suitable train to a non-electrified line. SOLUTION: This rolling stock has at least one motor car, mounted with an AC motor to drive the car, an inverter to drive it at a variable speed, and a plurality of trailer cars with no motor nor inverter mounted. Batteries are mounted separately on at least two trailer cars, to supply DC power of the batteries to the inverter of the motor car. In rolling stock with a plurality of motor cars and trailer cars connected respectively, at least two trailer cars are mounted with batteries, whose terminals are parallel-connected through a common power line across the respective trailer cars, thereby supplying power to the inverters of the respective motor cars through the power line.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a train having an inverter-driven vehicle for railroads, and more particularly to a railroad system for a battery-driven train in which inverter power is supplied from a battery.
[0002]
[Prior art]
Japanese Patent Laid-Open No. 6-98409 discloses an example of a method of supplying DC power of an inverter from a battery in an inverter-controlled railway electric vehicle. The publication describes that there is an operation mode in which an AC motor is driven via an inverter control device from power supply from an overhead line, and an operation mode in which power is supplied to the same inverter from a battery having a lower voltage than the overhead line mounted on the vehicle. Has been.
[0003]
[Problems to be solved by the invention]
In the operation mode by the battery described in the above publications 1 and 2, since the battery is mounted on the same vehicle on which the inverter is mounted, the battery capacity cannot be increased. The battery is temporarily used in a special operation mode. Further, FIG. 3 of the same publication proposes a method of pulling a dedicated vehicle equipped with a large-capacity battery with an inverter-driven vehicle for traveling in a long non-electrified section.
[0004]
The above prior art discloses a concept in terms of battery power supply in an inverter-controlled railway vehicle. However, there is no disclosure or suggestion of what form to take regarding train formation in which a plurality of inverter-controlled vehicles connected by battery power supply are connected. That is, the prior art invention is based on the electric locomotive in view of the description.
[0005]
In addition to the above publication, JP 2000-83302 A discloses a battery-driven train and charging. However, this publication does not disclose or suggest what form the train formation is made by connecting a plurality of inverter-controlled vehicles by battery power feeding.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a balanced train in a train train connected with a battery-driven inverter-controlled vehicle as a train, to improve the redundancy due to operation, to reduce the capacity of the battery, and to deenergize all the lines. It is to provide the most suitable train for traveling on the route of the section.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the line between the station having a height difference Te railway system odor battery train AC motor for driving the vehicle travels in battery-powered train driven by the inverter to power the battery,
[0008]
Install a facility to charge the train battery at the station with the lowest elevation above sea level.
[0009]
In the facility for charging the battery, the power supply facility for supplying AC or DC power to the train is provided only in a predetermined section of the entrance / exit of the station with the lowest sea level,
[0010]
The train is provided with means for detecting the track of the incoming / outgoing line and means for charging the battery by receiving power from the power supply facility arranged along the track in accordance with the detection.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 shows the form of a passenger train set according to the first embodiment of the present invention. The formation of the vehicle shown in the figure has m cars of the motor vehicle M and n cars of the trailer car, and the trailer cars are connected to the head and the tail of the n cars. The motor vehicles M (1) to M (m) include an AC motor 1 that drives the vehicle, an inverter 2 that drives the motor, a control device 3 that controls the inverter, and a voltage on the DC side of the inverter. A step-up / step-down chopper device 4 is mounted. The trailer vehicle of T (1) to T ( n ) is equipped with a battery 5 such as a lithium battery having a high storage density for supplying DC power to the inverter 2 of the motor vehicle M, and the battery mounted on each trailer vehicle. 5 is connected in parallel by common positive and negative power lines 6 and 7, and electric power is supplied from the power line to the inverter of each motor vehicle via the step-up / step-down chopper device 4. In addition, each vehicle of a motor vehicle and a trailer vehicle is provided with the connection apparatus Bb of the power lines 6 and 7 with the other vehicle to connect. Also, the beginning and the tail of the train is deployed trailer car, in its vehicle, having an operating command system 8 for generating power / brake command is a navigation command for a train, each operation command system and each vehicle that The control device 3 and the step-up / step-down chopper device 4 are connected by an on-vehicle LAN 9.
[0013]
Here, an AC inverter 2 and the controller 3 that drives the motor 1, since those skilled in the art is a well-known technique, a detailed description thereof will be omitted.
[0014]
FIG. 2 shows a configuration diagram of the step-up / down chopper device 4 in the present embodiment. In this embodiment, the rated voltage of the battery 5 is lower (for example, 200 V) than the rated DC voltage (for example, 1500 V) of the inverter 2 because the volume that can be mounted on the vehicle as a battery is limited. Therefore, it is necessary to step down the inverter voltage to the battery voltage in order to boost the battery voltage to the rated voltage of the inverter during power running of the train and to recover the regenerative energy generated in the AC motor from the inverter to the battery during braking.
[0015]
In FIG. 2, reference numeral 41 denotes a step-up / step-down chopper circuit which is connected between a capacitor provided between the battery 5 and the DC side terminal of the inverter 2 . This capacitor 10 is provided close to each inverter in order to absorb the harmonic of the direct current due to switching of the inverter. Note that this step-up and step-down chopper circuit 41 is described in JP-A-6-225458 discloses 4, description thereof is connected relationship with the component (411 to 415) is omitted.
[0016]
In this embodiment, the voltage detection value Vd of the capacitor 10 and a preset set value Vd * are compared by the comparator 42, and the resulting signal Sd and the power running / brake command Su (P, B) from the operation command board are compared. Is input to the controller 43, and the output of the controller 43 is input to the gate drive circuit 44 that operates the elements of the chopper circuit 41.
[0017]
Thus, when the voltage detection value of the capacitor which receives the power running command Su (P) from the time or train operation command system below the set value, the element 411 of the chopper circuit 41 is turned on and off, the voltage of the capacitor is rated The pressure is increased to the set value. On the other hand, when the voltage detection value of the capacitor which receives the brake command Su (B) or from the operation command system when the set value or more, the element 413 of the chopper circuit 41 is turned on and off, occurs in the brake when the AC motor Regenerative energy is recovered from the inverter to the battery.
[0018]
As described above , according to the present embodiment , the following effects can be obtained.
(1) as a train of the vehicle formation, by mounting in a distributed battery plurality of trailer car, when viewed as a train set, the balance of the weight of each vehicle, and, in particular, movement of the center of gravity of each vehicle during cornering Can be equalized, so that the train can be stabilized during traveling.
(2) When a train with a plurality of motor cars connected is run, the rear part has better adhesive properties than the front part in the running direction . For this reason, the torque of the rear motor vehicle becomes larger. Therefore, as the motor vehicle goes to the rear, the power consumption of the battery increases. Nevertheless, if the battery is associated with each inverter of each motor vehicle, the voltage of the battery of the rear motor vehicle is quickly reduced, and for this purpose, it is necessary to increase the battery capacity. On the other hand, in the present embodiment, the power supply side is averaged with respect to the power consumption of each motor vehicle, which differs depending on the traveling direction, by connecting the batteries dispersedly mounted on the formation vehicle in parallel through a common power line. However , the battery capacity can be reduced when viewed as a whole train.
(3) Even if a battery is distributed and mounted on each trailer vehicle and each battery is connected in parallel through a common power line, even if the battery has an abnormal drop in life or the like, the remaining normal battery Electricity can be supplied to all the motor vehicles of the train, and redundancy is improved.
(4) By mounting the step-up / step-down chopper device 4 on the motor vehicle, the voltage of the power lines 6 and 7 across the motor vehicle and the trailer vehicle becomes the battery voltage, so that the electric insulation of the power line can be lowered.
[0019]
Although not shown and described, the battery needs to be replaced because it has a lifetime. For this purpose, means for cutting off the electrical connection between the batteries is provided, and means for detecting the voltage drooping degree over each battery and storing the secular change of the lifetime as a history is provided.
[0020]
Further, in the battery-driven train shown in the present embodiment, regeneration of electric power to the battery is performed, but since the work amount due to power running is larger, the battery droops every time it travels. For this purpose, the battery may be replaced by a cartridge type, and the vehicle is provided with a lead-out portion from the power lines 6 and 7 so that charging of each battery of the train can be performed collectively from charging facilities outside the train. May be.
[0021]
FIG. 3 shows a form of a battery-powered train according to the second embodiment of the present invention. This embodiment differs from the embodiment of FIG. 1 in that an auxiliary battery 5M having a smaller capacity than the battery mounted on the trailer vehicle is also mounted on the motor vehicle M, and the positive and negative output terminals of the battery 5M are the power lines 6 and 7. Are connected to each other.
[0022]
By mounting this auxiliary battery 5M on the motor vehicle, power can be supplied from the auxiliary battery to the inverter for a short period of time, so that an effect that the motor vehicle can be rearranged and the like can be obtained.
[0023]
Incidentally, in the embodiment shown in FIGS. 1 and 3, although deployed trailer car frontal and rear of the train, not limited to this, even when deploying motor vehicle frontal and rear of the train consist, It goes without saying that the same effect as described above can be achieved.
[0024]
Next, the charging method of the train of the battery of FIG. 1 and FIG. 3, described below.
[0025]
FIG. 4 shows a trailer vehicle equipped with a device that receives power from a power supply facility outside the train and charges a battery mounted on the motor vehicle. The detailed configuration of the mounted charging apparatus 10 will be described with reference to FIGS.
The DC terminal of the charging device 10 is connected to the power lines 6 and 7 to which the battery 5 mounted on the motor vehicle is connected. Receiving power to the charging device 10 is obtained from the outside of the train via the pantograph 11 mounted on the vehicle with respect to the overhead line 13 connected to a DC or AC power source. However, since the battery-driven train of the present invention does not always receive power supply from the overhead line, the pantograph 11 is operated by the pantograph operating device 12 based on the command from the operation command table 8 only during charging, and the pantograph is used as the overhead line. They are in electrical contact.
[0026]
Figure 5 shows a configuration of a charging device according to receiving power from a DC overhead wire. The main circuit 101 constituting the charging device 10 has a circuit configuration similar to that of the step-up / step-down chopper 41 described above, and in addition to the function of charging the battery from the DC overhead line 13, it regenerates excess power to the battery to the overhead line during regeneration. It has a function.
[0027]
At the time of charging, the charging controller 102 controls the step-down chopper element 1011 in response to the charging command signal Sc and the battery voltage detection signal Vb from the operation command board 8. On the other hand, at the time of regeneration, if the battery voltage detection signal Vb is received and exceeds a set value , the regeneration controller 103 controls the boost chopper element 1012.
[0028]
FIG. 6 shows a configuration of a charging device that receives power from an AC overhead wire. The charging device 10 includes a transformer 105 having a primary winding connected from the AC overhead line 13 via the pantograph 11 and an AC power supply connected to the secondary winding of the transformer to the power lines 6 and 7 of the battery. It has a PWM converter 106 that converts it into a direct current and outputs it , and reversely converts it, and a PWM controller 107 that controls the PWM converter.
[0029]
During charging, the PWM controller 107 receives the charge command signal Sc from the operation command board 8 and the battery voltage detection signal Vb and controls the PWM converter 107 so that the DC output voltage of the PWM converter becomes a set value. On the other hand, at the time of regeneration, if the battery voltage detection signal Vb is received and exceeds the set value, the PWM controller 107 controls the PWM converter during that period to recover excess power from the inverter to the battery in the AC overhead line.
[0030]
As described above, according to the present embodiment, by mounting the battery charging device by power feeding from the outside of the train on the trailer vehicle on which the battery is mounted, the insulation resistance of the power line across the trailer vehicle and the motor vehicle is the battery voltage. Compatible with low pressure. In addition to charging the battery, excess power regenerated from the inverter to the battery at the time of train braking can be recovered to the external power facility, preventing battery destruction due to overcharging of the battery, and suppressing life reduction. There is an effect that can.
[0031]
In addition, the basic travel of the train set in the present invention is battery-driven, and the charging device described above is not operated over the entire train travel path, but is characterized by operating the charging device only in a specific travel section described below. Is given.
[0032]
FIG. 7 is a third embodiment of the present invention, and shows a configuration in which the charging device is operated only on the track of the incoming / outgoing line to the station. The entry / exit line to the station is provided with an overhead line 13 arranged along the track and ground elements 61 and 62 that can detect from the train that the train has entered the track of the entry / exit line. Under this environment, the battery-powered train of the present invention is operated as follows.
[0033]
The battery-driven train keeps the pantograph down until it enters the track of the input line of the station. When the ground element 61 is detected by the position detection device provided on the train side, the pantograph operation device 12 shown in FIG. 3 is activated. The pantograph 11 is raised and brought into contact with the overhead line 13. When the battery-driven train leaves the station and the train detects the ground element 62 on the outgoing track , the pantograph is lowered.
[0034]
As a result, the battery of the vehicle is charged from the external power facility by the charging device 10 shown in FIGS. 4 to 6 until the battery-driven train enters and exits the station. In addition, when the train enters, the train is in a brake mode, and power is regenerated from the inverter to the battery. At this time , the charging device 10 operates as described above so that the battery is not overcharged. To recover.
[0035]
FIG. 8 shows a fourth embodiment of the present invention . The environmental facilities in the input / output lines in FIG. 7 do not have to be provided in all stations on the route, and the stations above the sea level are shown in FIG. If there is a difference in elevation, it is only necessary to install environmental facilities at stations with low elevation.
[0036]
That is, in the case of traveling toward the higher station E from low-lying station A since the powering mode continues, it is necessary to charge commensurate with the consumption of the battery. However, at the time of traveling of the reverse, because the regenerative mode increases, charging equipment environment in the high station E is not required.
[0037]
As described above, the battery-driven train according to the present embodiment can increase the driving distance of the battery by loading the step-up / step-down chopper device 4 shown in FIG. 2 and the charging device 10 shown in FIGS. 4 to 6 on the vehicle. . Therefore, since the battery-powered train of the present invention can be run instead of the diesel train that is currently running on a non-electric line , environmental pollution can be eliminated.
[0038]
In addition, in the station A shown in FIG. 8, when providing battery exchange equipment instead of providing electric power feeding equipment (overhead line etc.) as shown in FIG. 7, the battery to be mounted is a cartridge type, and the vehicle has a battery terminal and Provide a mechanism that facilitates electrical detachment from the power line.
[0039]
FIG. 9 is a fifth embodiment of the present invention. In FIG. 1 of the present invention, the railway line having power feeding equipment for feeding power to the train battery from the outside arranged intermittently along the track is provided. It shows about the case where the train provided with the charging device which charges a battery from an overhead wire to a battery drive train is made to run.
[0040]
Ground elements 63 and 64 are installed that allow the train to detect power supply facilities that supply power to the battery of the train from the outside arranged intermittently along the track. And means in the train to detect the position of the ground coil, with on the detected known, or to be electrically connected to the power supply facility and the train of the battery through the charging device, or to (from ground coil 63 64) releasing the Means are provided.
[0041]
That is, when running the battery-powered train of the present invention on an electrified route, if a radio interference area due to radio noise due to contact between the pantograph and the overhead line is restricted , the pantograph is lowered to receive power from the outside. The train is driven only by the battery without using it.
[0042]
Thereby, the influence which it has on the environment accompanying train traveling can be reduced.
[0043]
Although not shown, when the regenerative power from the inverter to the battery is excessively generated due to the brake mode in high-speed operation where there is no overhead wire, the battery may not be able to compensate the regenerative power. As a result, the capacitor voltage rises abnormally. For this purpose, a series body of a resistor and a switching element is connected in parallel with the capacitor or the battery, and when the capacitor or the battery exceeds a predetermined voltage , the switching element is turned on so that the regenerative power is consumed by the resistor.
[0044]
【The invention's effect】
As described above, according to the present invention, it is possible to balance the trains in the battery-driven train, improve the redundancy attributed to driving, and reduce the battery capacity. In addition, the environment-friendly pollution can be achieved by adapting the battery-powered train of the present invention to a train running on a non-electrified route.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a battery-powered train showing a first embodiment of the present invention.
FIG. 2 is a specific configuration diagram of the step-up / down chopper device in FIG. 1 ;
3 is a configuration diagram of a battery-powered train set showing a second embodiment of the present invention.
Is a block diagram for charging the battery in the first and second embodiments of the present invention; FIG.
FIG. 5 is a specific configuration diagram of the charging device in FIG. 4;
6 is another specific configuration diagram of the charging device in FIG. 4; FIG.
FIG. 7 shows a third embodiment of the present invention and is a diagram for explaining a charging mode for a train.
FIG. 8 shows the fourth embodiment of the present invention and is a diagram for explaining a charging mode for a train.
FIG. 9 is a diagram illustrating a charging mode for a train according to a fifth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... AC motor, 2 ... Inverter, 3 ... Control device, 4 ... Buck-boost chopper device, 5 ... Battery, 6, 7 ... Power line, 9 ... On-vehicle LAN, T ... Trailer vehicle, M ... Motor vehicle, Bb ... Battery power line connection device.

Claims (1)

In a railway system of a battery-driven train that runs on a battery-driven train that is driven by an inverter in which an AC motor for driving a vehicle is powered by a battery on a route between stations having a height difference,
Most altitude the train battery is low station places the charging to that equipment,
In the facility for charging the battery, a power feeding facility that feeds AC or DC power to the train is provided only in a predetermined section of an entry / exit line of the station with the lowest sea level,
The train is provided with means for detecting the track of the incoming / outgoing line, and means for charging the battery by receiving power from the power feeding facility arranged along the track along with the detection. Railway system for battery-powered trains.

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