JP2017135791A - Driving cab display device for railway vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable total equipment efficiency of a vehicle for each notch command to be recognized at a glance by an operation notch command from a cab master controller while reducing a calculation load with a simple configuration, urge a motorman to perform an operation at a point where the total equipment efficiency of the vehicle is high, and raise a degree of freedom for the motorman to perform the operation at a point where the total equipment efficiency of the vehicle is high.SOLUTION: A display device installed in a driving cab of a railway vehicle generates operation efficiency on a driving device of the railway vehicle based on input information, the input information being operation notch command information from a master controller installed in the driving cab and operated by a motorman, vehicle weight information detected by a vehicle weight detector, and vehicle speed information detected by a speed detector for detecting a speed of the railway vehicle, and performs display by changing relationships between the operation notch command information and the operation efficiency according to a change in the input information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a railway vehicle, and more particularly to a cab display device.

  In the case of a DC train line type railway, for example, in the case of a DC train line type railway, the power for driving and accelerating the railway vehicle is supplied with DC power. The power converter converts the DC power into AC power and drives the AC motor. In this way, the vehicle is driven. In addition, in order to decelerate the vehicle, the AC motor is set to generate electricity with the power converter, the AC power generated by the AC motor is converted to DC power with the power converter, and this power (called regenerative power) is transferred to the DC train line. By supplying the braking force, the AC motor generates braking force (referred to as regenerative braking operation) and decelerates the vehicle.

  When powering a vehicle, devices that receive DC power and drive the AC motor pass through devices such as a filter reactor, an inverter control device, an AC motor, and a gear, for example. In this configuration, an inverter control device is used as the power conversion device. These devices generate losses in transferring power.

  For example, filter reactors cause copper loss due to current flowing due to the resistance component of the equipment, and inverter control devices perform switching using semiconductor switches, etc., resulting in losses such as conduction loss and switching loss. When an AC voltage is applied and a current flows, losses such as copper loss and iron loss are generated.

  These losses are constantly changing depending on the driving state of the vehicle, the control state of the inverter control device, and the like. The electric power for driving the vehicle is the remaining electric power obtained by subtracting the loss of these devices from the electric power input from the DC train line. Here, assuming that (the power input from the DC train line−the loss of the device) / (the power input from the DC train wire) is the total device efficiency during the powering operation, the higher the total device efficiency, the lower the loss and the less the power ( Hereinafter, the vehicle can be driven with power running power).

  On the other hand, in the regenerative braking operation, similarly, when (the power generated by the AC motor−the loss of the device) / (the power generated by the AC motor) is the total device efficiency during the regenerative braking operation, the higher the total device efficiency, Loss is low and more power can be supplied to the DC train line. Assuming power running power and regenerative power as power consumption, power consumption can be reduced if the vehicle is driven and accelerated with less power running power and more regenerative power can be supplied to the DC train line by regenerative braking operation during deceleration. If the vehicle can be run at an operating point with less power consumption, the amount of power consumption can be reduced, and the energy required for running the vehicle can be reduced.

  There is a strong need for energy saving in railway vehicles, and it is desirable that the energy required to drive the vehicle can be made as small as possible. For this reason, when the vehicle is driven, it is desirable to operate at the operating point with high efficiency of the above-mentioned device while keeping a predetermined diagram and reduce the energy required for the vehicle to travel. For this reason, if the driver who drives the vehicle is operated so as to be driven at the high-efficiency operating point of the device, the power consumption in driving the vehicle can be reduced and energy saving can be realized.

  In this way, for the purpose of encouraging the driver to drive the railway vehicle with high efficiency, in order to calculate the loss caused by driving or running the vehicle, the vehicle speed and route conditions are collected from the equipment related to the vehicle driving, Patent Document 1 discloses a display device that calculates an operation speed at which the overall device efficiency is high and displays the speed at which high-efficiency operation is performed on the display device of the cab.

JP 2010-088145 A

  However, the method described in Patent Document 1 presents speed information with the highest efficiency to the driver, but the relationship between the notch information and the efficiency information is, for example, vehicle weight (boarding rate) or vehicle speed. It is not changed according to the display. For this reason, there is a problem that the driver has only to drive to follow the displayed speed, and has a low degree of freedom in operation, and does not consider the vehicle weight that greatly affects the overall equipment efficiency.

  Therefore, an object of the present invention is to make it possible to understand at a glance how much the total equipment efficiency of the vehicle with respect to each notch command is, without reducing the accuracy of the calculation of the total equipment efficiency even when the vehicle weight changes. It is to increase the degree of freedom of operation for the driver to operate at a point where the overall equipment efficiency of the vehicle is high.

Therefore, the present invention is a display device installed in a cab of a railway vehicle,
Operation notch command information from the master controller installed on the cab and operated by the driver, vehicle weight information detected by the vehicle weight detector, and detected by the speed detector that detects the speed of the railway vehicle. The vehicle speed information is used as input information, the operation efficiency of the railway vehicle drive device is generated based on the input information, and the relationship between the operation notch command information and the operation efficiency is determined according to the change in the input information. Change and display.

  According to the present invention, it is possible to know at a glance how much the overall device efficiency of the vehicle is corresponding to each driving notch command, and the degree of freedom of operation for the driver to operate at a point where the overall device efficiency of the vehicle is high is increased. In addition, even when the vehicle weight changes, it is possible to provide the driver with driving support information that improves the overall device efficiency.

It is the figure which showed the example of a display at the time of the power running operation | movement of the cab display apparatus of this invention. It is a figure which shows the apparatus structure of the rail vehicle of a DC train line. It is the figure which showed the 1st Example of the signal input structure of the cab display apparatus of this invention. It is the figure which showed the 2nd example of a display at the time of the power running operation | movement of the cab display apparatus of this invention. It is the figure which showed the example of a display at the time of the regenerative brake operation | movement of the cab display apparatus of this invention. It is the figure which showed the 2nd Example of the signal input structure of the cab display apparatus of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 shows an example of the configuration of the railway vehicle drive device of the present invention. The driving device that receives the DC power from the DC overhead wire 51 and drives the AC motor 55 includes a current collector 52 that receives power from the DC overhead wire 51, a filter reactor 53 that removes noise from the DC power, a power converter 54, An AC motor 55, a gear 56, wheels 57, and a grounding brush 58 are provided. In this configuration, an inverter control device that supplies AC power to the AC motor 55 is used as the power converter.

  FIG. 3 shows the configuration of the input / output information of the cab display device installed in the cab of the railway vehicle of the present invention.

  The cab display device 1 is mounted on the vehicle, vehicle weight information Wa detected by the vehicle weight detector 2 mounted on the vehicle, a driving notch command NTCa from the main controller 3 operated by the driver, and the vehicle. The vehicle speed information VELa detected by the speed detector 4 is input. The driving notch command NTCa is, for example, a power running notch command that is driving information for power running operation, a brake notch command that is driving information for regenerative braking operation, or a notch off command for inertial running without acceleration or deceleration. The operation notch command. In addition, the cab display device 1 records in advance data on the total device efficiency with respect to the vehicle speed and the vehicle pulling force or the motor torque. This is the efficiency map information 21.

  With the above configuration, the cab display device 1 constantly changes and displays the relationship between vehicle speed versus tensile force and total equipment efficiency in accordance with each driving notch command NTCa, as shown in FIG. FIG. 1 is an example of a display example of the cab display device 1 during a power running operation. Contour plots of total equipment efficiency (X%, Y%, Z%) are superimposed and displayed on a graph with the vehicle speed on the horizontal axis and the tensile force of the vehicle on the vertical axis. Here, in FIG. 1, the magnitude of the efficiency is X%> Y%> Z%. A speed vs. tensile force line corresponding to each operation notch command NTCa is drawn on this. In FIG. 1, the power running 3 notch command is “P3N”, the power running 4 notch command is “P4N”, and the power running 5 notch command is “P5N”, and the relationship between the speed and tensile force of these operational notch commands is drawn. doing. The relationship between each operation notch command and speed vs. tensile force changes such that the characteristics change according to the vehicle weight information Wa and the acceleration is kept constant even if the vehicle weight changes.

  Here, in FIG. 1, the vertical axis is the tensile force, but it may be represented by a display related to the force related to the acceleration of the vehicle such as the torque of the electric motor. Further, based on the current vehicle speed VELa and the operation notch command NTCa, a display indicating the current speed and the operating point of the tensile force is expressed as an operating point display 11.

  By making the cab display device 1 display as described above, the driver can recognize which operating point the total device efficiency is for the current driving notch command and the vehicle speed. This allows the driver to recognize that it is better to operate at an operating point that has a higher overall device efficiency than the current operation notch command, change the operation notch command, change the speed, etc. Prompts to operate at a high operating point. For the driver, the operating point can be adjusted while selecting the driving notch command or the speed, so that the degree of freedom is widened and it is possible to adapt to the circumstances. For example, as shown in FIG. 1, when the current operating point is at the position of the operating point display 11 (vehicle speed Ka, driving notch command is power running 5 notch command (P5N)), power running 3 notch (P3N at the same vehicle speed Ka) ), It is possible to grasp at a glance that the total device efficiency is higher (X%> Z%), so the driver can change the operation notch command to P3N. As a result, the operating point is changed from the operating point display 11 to the operating point display 12, and the operating point is operated at a higher operating point with higher overall equipment efficiency. Energy can be saved.

  FIG. 4 is a diagram showing a second display example during the power running operation of the cab display device. In the example of FIG. 4, the horizontal axis represents the vehicle speed, the vertical axis represents the total device efficiency, and the total device efficiency value corresponding to each driving notch command NTCa is displayed. Further, based on the current vehicle speed VELa and the driving notch command NTCa, a display indicating the current speed and the operating point of the driving notch command is represented as an operating point display 13. In the example of FIG. 4, when the current operating point is at the position of the operating point display 13 (vehicle speed Ka, driving notch command is power running 5 notch command (P5N)), the same vehicle speed is input to power running 3 notch (P3N). Since it can be grasped at a glance that the total device efficiency shown on the vertical axis is higher, the driver can change the operation notch command to P3N. As a result, the operating point becomes the position of the operating point display 14, and the operation of the operating point with higher overall equipment efficiency can be achieved, so that the power consumption described above can be reduced and, as a result, the running energy of the vehicle can be saved. Can be

  On the other hand, a display example of the cab display device 1 during the regenerative braking operation in the case of deceleration is shown in FIG. Similar to the display example of the cab display device 1 during the power running operation, the total device efficiency (X%, Y%, Z) is plotted on the graph with the horizontal axis representing speed and the vertical axis representing vehicle braking force. %) Contour map. Here, in FIG. 5, the magnitude of the efficiency is X%> Y%> Z%. The line of the relationship between the speed and the braking force corresponding to each operation notch command NTCa is drawn on this. In FIG. 5, regarding the operation notch command, the brake 3 notch command is “B3N”, the brake 4 notch command is “B4N”, the brake 5 notch command is “B5N”, and these operation notch commands are drawn. The relationship between the speed and the braking force corresponding to each driving notch command changes such that the characteristics change according to the vehicle weight information Wa and the deceleration is kept constant even if the vehicle weight changes. Here, in FIG. 5, the vertical axis represents the braking force, but it may be represented by a display related to the force related to the deceleration of the vehicle such as the torque of the electric motor. Further, based on the current vehicle speed VELa and the driving notch command NTCa, a display indicating the current speed and the operating point of the braking force is represented as an operating point display 15.

  By making the cab display device 1 display as described above, the driver can recognize which operating point the total device efficiency is for the current driving notch command and the vehicle speed. This allows the driver to recognize that it is better to operate at an operating point that has a higher overall device efficiency than the current operation notch command, change the operation notch command, change the speed, etc. Can be urged to operate at a high operating point. For the driver, the operating point can be adjusted while selecting the driving notch command or the speed, so that the degree of freedom is widened and it is possible to adapt to the circumstances. For example, as shown in FIG. 5, when the current operating point is at the position of the operating point display 15 (vehicle speed Kb, driving notch command is brake 5 notch command (B5N)), at the same vehicle speed, brake 3 notch (B3N) Since it can be grasped at a glance that the total device efficiency is higher when X is input (X%> Z%), the driver can change the operation notch command to B3N. As a result, the operating point becomes the position of the operating point display 16, and the operating point with the higher overall device efficiency can be operated, so that the power consumption described above can be reduced, and as a result, the traveling energy of the vehicle can be saved. Can be

  In addition, the configuration as shown in the first embodiment requires the minimum necessary input information, can reduce the calculation load without the need to calculate the sequential efficiency, and can realize energy saving traveling with a simple configuration. it can.

    FIG. 6 is a diagram showing a second embodiment of the configuration of the input / output information of the cab display device installed in the cab of the railway vehicle of the present invention. The difference from the first embodiment is that the input signal of the cab display device 1 is used as the output signal of the inverter control device 5.

  The cab display device 1 receives the vehicle weight information Wi output from the inverter control device 5, the driving notch command NTCi, and the vehicle speed information VELi. Since the inverter control device generates these three signals by an input signal from an external device or a calculation inside the inverter control device, a signal interface is configured between the inverter control device 5 and the embodiment. Compared to 1, the input signal of the cab display device 1 can be connected more easily. The display example of the cab display device 1 is the same as the case where the vehicle weight information Wa shown in the first embodiment is replaced with Wi, the driving notch command information NTCa is replaced with NTCi, and the vehicle speed information VELa is replaced with VELi.

    In FIG. 6, all the signals of the vehicle weight information, the driving notch command, and the vehicle speed information input to the cab display device are used as output signals of the inverter control device 5, but some of these three signals are inverters. The output of the control device 15 may be used, and the remaining signals may be output signals of the vehicle weight detector 1, the master controller 3, and the speed detector 4 shown in FIG.

  DESCRIPTION OF SYMBOLS 1 ... Driver's cab display device, 2 ... Vehicle weight detector, 3 ... Master controller, 4 ... Speed detector, 5 ... Inverter control device, 11, 12, 13, 14, 15, 16 ... Operating point display, 21 ... Efficiency map data, 51 ... DC train line, 52 ... Current collector, 53 ... Filter reactor, 54 ... Inverter controller, 55 ... AC motor, 56 ... Gear, 57 ... Wheel, 58 ... Ground brush

Claims (3)

A cab display device installed in a cab of a railway vehicle,
Operation notch command information from the master controller installed on the cab and operated by the driver, vehicle weight information detected by the vehicle weight detector, and detected by the speed detector that detects the speed of the railway vehicle. With the vehicle speed information as input information, the operation efficiency of the railway vehicle drive device is generated based on the input information,
A cab display device for a railway vehicle, wherein a relationship between the operation notch command information and the operation efficiency is changed and displayed according to a change in the input information. In the cab display device according to claim 1,
One or more of the operation command notch information, the vehicle weight information, and the vehicle speed information are obtained from a control device of a power conversion device that supplies AC power to a railway vehicle drive motor. Stand display device. A cab display device installed in a cab of a railway vehicle,
The operation command notch information, the vehicle weight information, and the vehicle speed information output from the control device of the power conversion device that supplies AC power to the railway vehicle driving motor are input information, and the driving of the railway vehicle is performed based on the input information. An operation efficiency of the apparatus is generated, and the relation between the operation notch command information and the operation efficiency is changed and displayed according to the change of the input information, and the cab display device for a railway vehicle is characterized.

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