KR20140050458A - Slip control method of propulsion control system for high speed train - Google Patents

Abstract

The present invention relates to a slip control method for a propulsion control apparatus for a high-speed train, which comprises as follows: a step of sensing the racing of an axle of a high-speed train when a slip of the axle of the high-speed train occurs; a step of reducing the traction power of the high-speed train to a preset reduction when the racing is sensed and maintaining the traction power for a preset maintenance time; a step of gradually recovering the traction power maintained for the maintenance time over a preset recovery time; and a step of adjusting the increase of the recovery pattern of the traction power by stages depending on the number of racing of the axle of the high-speed train. Therefore, the slip control method for a propulsion control apparatus for a high-speed train can realize re-adhesive control by reducing the incidence rate of recurrent racing through the adjustment of the traction power pattern, can prevent emergency brake coupling due to reduced air pressure in a vehicle, and can prevent damage to a tripod by adjusting the sand spraying timing. [Reference numerals] (110) Main transformer; (120) Propulsion control apparatus; (121) Converter; (122) Inverter; (130) Controller; (140) Memory unit; (150) Speed measuring sensor; (160) Motor

Description

SLIP CONTROL METHOD OF PROPULSION CONTROL SYSTEM FOR HIGH SPEED TRAIN}

The present invention relates to a slip control method of a propulsion control device for a high-speed train, and more particularly, by re-adhesion control by detecting the idle of the axle when the high-speed train axle slips and adjusting the traction force pattern to reduce the re-idling incidence. It relates to a slip control method of a propulsion control device for high-speed train to enable.

The propulsion control device for high-speed train generates propulsion force for driving the motor by controlling the current supplied to the motor by the propulsion control device. In addition, the propulsion control device for a high-speed train comprises a peripheral pressure, a plurality of propulsion control device and a plurality of controllers, the propulsion control device is provided with a plurality of converters and inverters. The converter converts the reduced AC from the line voltage AC to DC through the peripheral pressure, and converts DC into AC through the inverter to supply voltage to the traction motor by varying according to the train's driving speed and driving command. In addition, the propulsion control device performs slip / slide control for normal train operation even when the wheel of the vehicle is slipped due to bad weather such as rainfall, snow, or the like due to fog or moisture, foreign matters on the rail, and the like.

On the other hand, Korean Patent Laid-Open No. 10-2004-0060213 relates to an axle speed sensing device of a railway vehicle that can accurately detect the speed of an actual vehicle and can detect a cause of slip or slide phenomenon. A speedometer installed in the axle, a transducer having a plurality of channels for converting the rotational speed signal of the axle sensed by the speedometer, and measurement equipment for storing, comparing, analyzing and displaying the axle rotational speed signal transmitted from the transducer; Characterized in that made. According to the disclosed technology, it is possible to accurately detect the rotational speed of the axle, and thus there is an effect of detecting the slip or slide shape of the vehicle generated irrespective of the rotational speed of the axle. Therefore, there is an effect that the braking device and the propulsion device can be properly driven in response to slip or sliding of the vehicle.

However, if the traction of the propulsion control device for high-speed trains in rainy weather continues to increase to 100%, the adhesion between the rails and the wheels decreases, and idle occurs continuously, and acceleration of the vehicle is impossible. In addition, since salsa is performed by air pressure when salsa is requested, the air pressure of the high-speed vehicle is reduced due to the continuous salsa request, and the tripod, which is a power transmission device, is damaged at the time of salsa.

Korean Patent Publication No. 10-2004-0060213

An embodiment of the present invention is to detect the idle of the axle when the slip of the high-speed train axle occurs and to adjust the retraction force by reducing the re-idling incidence to enable the re-adhesion control, the control of the propulsion control device for high-speed train to adjust the salsa point It is intended to provide a slip control method.

Among the embodiments, the slip control method of the propulsion control device for a high-speed train detects the axle idle of the high-speed train when the slip of the high-speed train axle occurs, if the idle is detected by reducing the traction force of the high-speed train to a predetermined decrease in the corresponding traction force Maintaining a predetermined holding time, gradually recovering the traction force maintained during the holding time over a predetermined recovery time, and gradually increasing the recovery pattern of the traction force according to the number of revolutions of the high speed train axle. Adjusting the steps.

In an embodiment, the detecting the axle idle of the high speed train may include detecting the reference speed of the high speed train by comparing the axle speed of the corresponding high speed train.

In one embodiment, maintaining the corresponding traction force for a predetermined holding time may include requesting salsa after maintaining for the predetermined holding time.

In one embodiment, the step of requesting salsa may include requesting salsa to the rail of the high speed train when the difference between the detected reference speed of the high speed train and the axle speed of the corresponding high speed train is doubled. .

In one embodiment, the step of gradually recovering the traction force over a predetermined recovery time may include the step of releasing the salsa on the rail of the high-speed train at the time when the recovery of the traction force is completed.

In one embodiment, the step of adjusting the rising width in accordance with the number of revolutions of the high speed train axle step of adjusting the traction force of the high speed train to 100% rise, after adjusting the 100% rise in the axle of the high speed train When re-idling occurs, adjusting the towing force of the high-speed train to 80% increase, and if the re-idling occurs on the axle of the high-speed train after adjusting to the 80% increase, the towing force of the high-speed train is increased to 60%. Adjusting, and if re-idling occurs in the axle of the high-speed train after adjusting to the 60% rise, adjusting the traction force of the high-speed train to 40% rise.

The slip control method of the propulsion control device for a high-speed train according to an embodiment of the present invention detects the idle of the axle when the high-speed train axle slips and adjusts the traction force pattern to reduce the re-idling incidence, thereby enabling re-adhesion control. Salsa timing can be adjusted to prevent emergency braking due to reduced air pressure in the vehicle and to prevent tripod damage.

1 is a block diagram illustrating a slip control device of a propulsion control device for a high-speed train according to an embodiment of the present invention.
2 is a graph illustrating a slip control method and a salsa timing of a propulsion control device for a high-speed train.
3 is a graph illustrating a slip control method of a propulsion control device for a high-speed train.
4 is a graph comparing a slip control method of a conventional propulsion control device for a high speed train and a slip control method of the propulsion control device for a high speed train according to an exemplary embodiment of the present invention.
5 is a flowchart illustrating a slip control method of a propulsion control device for a high-speed train according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

1 is a block diagram illustrating a slip control device of a propulsion control device for a high-speed train according to an embodiment of the present invention.

Referring to FIG. 1, a slip control device of a propulsion control device for a high speed train includes a peripheral pressure device 110, a propulsion control device 120, a controller 130, a memory unit 140, a speed measurement sensor 150, and an electric motor. 160.

The peripheral voltage transformer 110 reduces the wire AC voltage received from the high-speed train and converts it into a circuit AC voltage for the motor. In addition, the motor circuit AC voltage converted in the peripheral voltage 110 is transmitted to the converter 121 under the control of the controller 130.

The propulsion control device 120 generates a propulsion force for driving the electric motor 160 of the high speed train by controlling the current supplied to the electric motor 160 of the high speed train. At this time, the propulsion control device 120 receives the circuit AC voltage for the motor from the peripheral pressure regulator 110 under the control of the controller 130 and transfers it to the converter 121 in the propulsion control device 120.

In addition, the propulsion control device 120 performs slip / slide control for normal train operation even when the axle of the high-speed train slips. At this time, the speed measured by the speed measuring sensor 150 is calculated as the axle speed in the controller 130, the propulsion control device 120 is received from the controller 130, the actual wheel of the high-speed train axle The slip / slide control is performed by reflecting the radius information.

The propulsion control device 120 further includes a converter 121 and an inverter 122.

The converter 121 receives the converted AC voltage from the peripheral voltage 110 and converts the converted DC voltage to the inverter 122. In this case, the converter 121 receives an AC voltage from the peripheral voltage 110 through the control of the controller 130.

The inverter 122 receives the DC voltage converted by the converter 121 and converts it into an AC voltage (for example, 0 to 2183 V), and varies according to a train running speed and a driving command to supply a voltage to the electric motor 160.

The controller 130 controls the peripheral voltage 110 converted from the peripheral voltage 110 to the peripheral voltage 110 to be transferred to the converter 121, and the propulsion control device 120 according to a preset value in the memory unit 140. Receives the speed and the reference speed of the wheel measured by the speed measuring sensor 150 so as to drive the electric motor 150 is calculated as the axle speed and transmitted to the propulsion control device 120.

At this time, the speed for the four axles measured by the speed measuring sensor 150 is converted to the number of revolutions of the electric motor 160 connected to the axle in accordance with the gear ratio and is calculated as the final axle speed in consideration of the wheel radius.

The memory unit 140 sets and stores a reduction width (for example, 20%) to reduce the traction force of the high-speed train, and maintains the retention time (for example, 2 seconds and 5 seconds) to maintain the traction force at the reduced reduction width. ) And save it. In addition, the memory unit 140 sets and stores a recovery time (for example, 4 seconds, 6 seconds, 8 seconds, and 10 seconds) for gradually recovering the traction force held during the holding time.

The memory unit 140 provides a value stored in the memory unit 140 required by the controller 130 when necessary.

The speed measuring sensor 150 simultaneously measures the corresponding bogie speed (two wheels in front of the high speed train) of the high speed train and the speed (two wheels behind the high speed train) of the neighboring train in the electric motor 160. In addition, the speed measuring sensor 150 transmits the measured speed of the wheel to the controller 130. The controller 130 obtains the reference speed of the vehicle measured by the signal device from the host device TDCS.

The electric motor 160 reflects the axle speed calculated by the controller 130 to perform the high speed train driving through the voltage supplied from the inverter 122. At this time, the driving is performed by reflecting the traction force of the high speed train by the control of the controller 130 according to the traction force pattern of the high speed train.

2 is a graph illustrating a slip control method and a salsa timing of a propulsion control device for a high speed train, FIG. 3 is a graph illustrating a slip control method of a propulsion control device for a high speed train, and FIG. 4 is a conventional high speed train propulsion. It is a graph comparing the slip control method of the control device and the slip control method of the propulsion control device for a high-speed train according to an embodiment of the present invention.

2, 3 and 4, in the conventional slip control method of the propulsion control device for high speed trains, when the slip of the high speed train axle 200 occurs, the controller 130 reduces the width stored in the memory unit 140. By reading 210, the motor 160 reduces the traction force, and the controller 130 reads the holding time 221 stored in the memory unit 140 so that the motor 160 has the corresponding reduced traction force. To keep. At this time, the holding time 221 that the controller 130 reads from the memory unit 140 is 5 seconds.

When the motor 160 maintains the reduced traction force for the holding time 221, the controller 130 reads the recovery time 231 stored in the memory unit 140 so that the motor 160 recovers the recovery time. And gradually recovers traction over 221. At this time, the controller 130 increases the traction force to 100% because the recovery time 231 read from the memory unit 140 is 10 seconds.

The slip control method of the conventional high speed train propulsion control device continuously increases the traction force to 100% in this manner, but if the traction force continues to increase to 100%, re-idling continues to occur and vehicle acceleration is impossible.

In one embodiment, the slip control method of the propulsion control device for a high-speed train according to an embodiment of the present invention, when the slip occurs 200 of the high-speed train axle, the controller 130 is a reduced width (stored in the memory unit 140 ( By reading 210, the motor 160 reduces the traction, and the controller 130 reads the holding time 220 stored in the memory unit 140 so that the motor 160 receives the reduced traction. Keep it. At this time, the holding time 220 that the controller 130 reads from the memory unit 140 is 2 seconds.

And if the motor 160 maintains the reduced traction for the retention time 220, the controller 130 reads the recovery time 230 stored in the memory unit 140, the motor 160 is the recovery time And gradually recovers traction over 230. At this time, the controller 130 increases the traction force to 100% because the recovery time 230 read from the memory unit 140 is 10 seconds.

If retraction occurs after the towing force has been increased to 100%, repeat this way up to three times. When re-idling occurs again, the controller 130 reads the recovery time 240 stored in the memory 140 to allow the motor 160 to gradually recover the traction over the corresponding recovery time 240. . In this case, the controller 130 increases the traction force to 80% because the recovery time 240 read from the memory 140 is 8 seconds.

When the retraction occurs while maintaining the traction force at 80%, the controller 130 reads the recovery time 250 stored in the memory unit 140 so that the motor 160 maintains the traction force over the recovery time 250. Try to recover gradually. At this time, the controller 130 increases the traction force to 60% because the recovery time 250 read from the memory unit 140 is 6 seconds.

When the retraction occurs while maintaining the traction force at 60%, the controller 130 reads the recovery time 260 stored in the memory unit 140 so that the motor 160 maintains the traction force over the corresponding recovery time 260. Try to recover gradually. At this time, the controller 130 increases the traction force to 40% because the recovery time 260 read from the memory unit 140 is 4 seconds.

The traction is maintained at 40% and if re-idling occurs, the traction is increased to 40% again.

In an embodiment, when the idle speed is detected, the difference between the reference speed and the corresponding axle speed is 10 km / h or more when the speed of the high speed train is 150 km / h or less, or when the speed of the high speed train is 150 km / h or more, the reference speed and the corresponding axle speed. If the difference is more than 16km / h, the electric motor 160 to reduce the traction force to maintain the traction force for the retention time 220 and then make a salsa request 310 to the rail of the high-speed train.

When the motor 160 gradually recovers the traction force over the recovery times 230, 240, 250, and 260, the salsa release 320 is performed on the rail of the high speed train at the time when the recovery is completed.

As described above, the operation by the traction pattern is a method of finding the maximum traction force without re-idling while gradually lowering the traction force when the continuous idling of the high-speed train occurs in the adhesive coefficient that changes according to the climatic conditions.

And the method of releasing the final traction 40% is reset by the notch off operation of the engineer.

Hereinafter, the slip control method of the propulsion control device for a high-speed train according to an embodiment of the present invention will be described in detail.

5 is a flowchart illustrating a slip control method of a propulsion control device for a high-speed train according to an embodiment of the present invention.

Referring to FIG. 5, in the slip control method of the propulsion control device for a high speed train, the propulsion control device 120 of the high speed train may be controlled by weather conditions such as rainy weather, snowfall, dew, etc. when controlling the traction force of the vehicle. Slip of the high-speed train axle occurs (200) (S101). When the slip of the high-speed train axle occurs (200), the controller 130 detects the idle of the high-speed train axle (S102), in which the method of detecting the idle is based on the speed of the high-speed train at 150 km / h or less If the difference between the axle speed is 5km / h or more is detected by the controller 130, if the difference between the reference speed and the corresponding axle speed is more than 8km / h is detected by the controller 130.

And if the idle is detected, the controller 130 controls the electric motor 160 to reduce the traction force of the high-speed train to the reduction width 210 stored in the memory unit 140 (S103), and also the controller 130 The electric motor 160 is controlled to maintain the reduced traction for the holding time 220 stored in the memory 140 (S104).

At this time, when the electric motor 160 detects idle, the difference between the reference speed and the corresponding axle speed is twice (at 150 km / h or less, the difference between the reference speed and the corresponding axle speed is 10 km / h or more and at 150 km / h or more, the reference speed and the corresponding axle speed). If the difference is more than 16km / h) (S105), if the difference between the reference speed and the corresponding axle speed is twice, the motor 160 reduces the traction force and maintains the traction force for the retention time 220 after the high-speed train Salsa request 310 to the rail of the (S106).

After the salsa request 310, the controller 130 reads the recovery time 230 stored in the memory unit 140 so that the motor 160 gradually recovers the traction over the recovery time 230. In this case, the controller 130 increases the traction force to 100% because the recovery time 230 read from the memory unit 140 is 10 seconds (S108).

On the other hand, when the difference between the reference speed and the corresponding axle speed is not twice, the controller 130 reads the recovery time 230 stored in the memory unit 140 and the motor 160 at the recovery time 230. In order to gradually recover the traction force (S107), the controller 130 increases the traction force to 100% since the recovery time 230 read from the memory unit 140 is 10 seconds (S108).

If retraction occurs after the towing force has been increased to 100%, repeat this way up to three times. When re-idling occurs again (S109), the controller 130 reads the recovery time 240 stored in the memory unit 140 so that the motor 160 gradually increases the traction force over the corresponding recovery time 240. Try to recover. At this time, the controller 130 increases the traction force to 80% because the recovery time 240 read from the memory unit 140 is 8 seconds (S110).

And if re-idling does not occur, the motor 160 maintains the elevated traction 80%.

When the retraction occurs while maintaining the traction force of 80% (S111), the controller 130 reads the recovery time 250 stored in the memory unit 140, the motor 160 is the recovery time 250 Gradually recover traction over the course. At this time, the controller 130 increases the traction force to 60% because the recovery time 250 read from the memory unit 140 is 6 seconds (S112).

And if re-idling does not occur, the electric motor 160 maintains the elevated traction 60%.

When retraction occurs while maintaining the traction force at 60% (S113), the controller 130 reads the recovery time 260 stored in the memory unit 140 so that the motor 160 may recover the corresponding recovery time 260. Gradually recover traction over the course. At this time, the controller 130 increases the traction force to 40% because the recovery time 260 read from the memory unit 140 is 4 seconds (S114). It maintains traction at 40% and raises traction back to 40% when re-idling occurs. At this time, the method of releasing the final traction 40% is reset by the notch off operation of the engineer.

The controller 130 reads the recovery times 230, 240, 250, and 260 stored in the memory 140 according to the traction force pattern of the high speed train, and the corresponding recovery times 230, 240, 250, and 260. While the motor 160 determines whether salsa request 310 has been made to the rail of the high-speed train under the control of the controller 130 after restoring the traction force (S115), if the salsa request 310 is made, recovery times 230 and 240 , 250, and 260 to release the salsa on the rail of the high-speed train at the time (S116).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the present invention as defined by the following claims It can be understood that

110: peripheral pressure
120: propulsion control device
121: converter
122: inverter
130: controller
140:
150: speed measuring sensor
160: electric motor

Claims (6)

Detecting idle axles of the high speed train when slip occurs of the high speed train axle;
If idle is detected, reducing the traction force of the high-speed train to a predetermined reduction width to maintain the traction force for a predetermined holding time;
Gradually recovering the traction force maintained during the holding time over a preset recovery time; And
Adjusting the rising width step by step according to the number of revolutions of the high speed train axle;
Slip control method of the propulsion control device for high speed train comprising a.
The method of claim 1, wherein detecting the axle idle of the high speed train
And comparing the reference speed of the high speed train with the axle speed of the corresponding high speed train to detect the slip speed of the propulsion control device of the high speed train.
The method of claim 1, wherein the maintaining of the traction force for a predetermined holding time is performed.
Slip control method of the propulsion control device for a high-speed train, characterized in that it comprises the step of requesting salsa after maintaining for the predetermined holding time.
The method of claim 2, wherein the requesting salsa comprises
When the difference between the detected reference speed of the high-speed train and the axle speed of the high-speed train doubled, the slip control method of the propulsion control device for a high-speed train comprising the step of requesting salsa to the rail of the high-speed train .
The method of claim 1, wherein the step of gradually recovering the traction force over a predetermined recovery time
Slip control method of the propulsion control device for high-speed train, characterized in that it comprises the step of releasing salsa on the rail of the high-speed train at the time when the recovery of the traction force is completed.
The method of claim 1, wherein the step of adjusting the rising step in accordance with the number of revolutions of the high speed train axle
Adjusting the traction force of the high speed train to a 100% increase in width;
Adjusting retraction of the high speed train to an 80% increase width when re-idling occurs in the axle of the high speed train after adjusting to the 100% increase width;
Adjusting retraction of the high speed train to a 60% increase width when re-idling occurs in the axle of the high speed train after adjusting to the 80% rise width; And
Adjusting retraction of the high speed train to a 40% increase width when re-idling occurs in the axle of the high speed train after adjusting to the 60% increase width;
Slip control method of the propulsion control device for high speed train comprising a.

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