KR101332792B1 - Power Supply Method, Apparatus and Power Transmission Apparatus by Segmentation of Feeding Line - Google Patents

Abstract

The present invention provides a power feeding device for supplying power to N (eg, N is a natural number of two or more) power feeding segments, comprising: a train sensing unit sensing a position of a train running on each power feeding segment; And a control unit for controlling switching of the N power feeding segments to supply power only to the power feeding segments determined to be running by the train according to the detection result of the train detecting unit, wherein each of the power feeding segments is predetermined in the longitudinal direction of the railroad track. Feed core having a width and length of; And a feeder wound on an upper portion of the feed core to receive electric power.

Description

Feeding device for supplying electric power by segmenting feeder line, driving method and feeding device {Power Supply Method, Apparatus and Power Transmission Apparatus by Segmentation of Feeding Line}

Embodiments of the present invention relate to a power supply device for supplying electric power by segmenting a feed line, a driving method thereof, and a power supply device. More specifically, divide the feed line into a plurality of segments and supply power to each segment, but supply power only to the segment depending on the presence of a train traveling over the feed segment. It relates to a power supply device for supplying power by designing differently, and a driving method thereof.

The contents described in this section merely provide background information on the embodiment of the present invention and do not constitute the prior art.

In general, electric power is supplied between a suspension line and a railway line connected from a power supply unit installed around a railway line to supply electric power to a train. In order to receive the power supplied between the suspension line and the railway, the electric vehicle is provided with a pantograph and wheels made of a conductive material, and the received electric power is used as a power source of the electric vehicle.

However, in the case of receiving power in this manner, the mechanical resistance due to friction between the suspension line and the pantograph is not only limited to the speed of the electric vehicle, but also the suspension line and the pantograph due to the friction between the suspension line and the pantograph. There is a problem that a lot of maintenance costs due to wear. In addition, since the power supply line is exposed to the outside, there is a risk of electric shock, and the installation and maintenance of such a facility is expensive due to the need for installation of peripheral equipment required for feeding, including a suspension line. In addition, when constructing a tunnel in which the electric vehicle passes, there is a problem in that the tunnel construction cost is increased by constructing the tunnel large enough to accommodate the suspension line and the pantograph.

As a way to solve the problem of the power supply method, there is a method of delivering power by providing a current collector in the electric vehicle provided with a core parallel to the rail and a feeder is installed on the core so that the magnetic flux generated from the feeder is bridged. In the case of installing a feeder consisting of a feeder core and a feeder line on the entire railroad to charge electric power for the operation of the train, the current flows to the feeder line even when the train is not running. In addition to causing waste, there is a problem in that unnecessary magnetic fields are generated in a large portion of the feed line by the current flowing in the feed line.

In order to solve this problem, an embodiment of the present invention divides a feeder line into a plurality of segments and supplies power to each segment, but supplies power only to the corresponding segments according to the presence or absence of a train traveling over the feed segment. The main purpose is to supply power by designing the length of the feed segment is different according to the driving position of the.

In order to achieve the above object, an embodiment of the present invention, in the power supply device for supplying power to the N (but N is a natural number of two or more) feeding segments, the position of the train running on each feed segment Train detection unit; And a control unit for controlling switching of the N power feeding segments to supply power only to the power feeding segments determined to be running by the train according to the detection result of the train detecting unit, wherein each of the power feeding segments is predetermined in the longitudinal direction of the railroad track. Feed core having a width and length of; And a feeder wound on an upper portion of the feed core to receive electric power.

The power feeding device includes an inverter unit having N inverters for supplying power to the N feeding segments; And it may include a DC power supply for supplying power to the inverter.

The N inverters connect (L +) legs in parallel, a circuit in which two switching elements are connected in series between one end and the other end of the DC power source, and among the (N + 1) legs, For each of the two legs, power may be supplied to the N feed lines in such a manner as to form a full bridge by connecting each feed line between the contacts connected to each other within the legs.

The feeding core may have a c-shaped shape and may have a protrusion bent in a form in which both ends are bent toward the top thereof and extend in a length direction of the railway line.

The feed core may be bent at both ends in the form of an E-shape and protruded in the center, but may extend in the longitudinal direction of the rail so that the protruding portion faces upward.

The train detection unit may detect a signal generated from the train and transmit it to the control unit.

The control unit may control the switching of the inverter so that the power of the feed segment to be entered the train is supplied based on the traveling direction of the train, and the switching of the inverter so that the power is cut off to the feed segment passing the train. .

The location of the train sensing unit may be a point spaced apart from the feeding segment or laterally a predetermined distance of the feeding segment, or an upper portion of the feeding core.

When the position of the train detection unit is the upper portion of the power feeding core, the portion where the train detection unit is located in the power feeding core may be removed from the central protrusion.

Further, in order to achieve the above object, another embodiment of the present invention, in the driving method of the power supply device for supplying power to the N (but N is a natural number of two or more) of the power supply segment, driving on each power supply segment Detecting the location of the train; And controlling switching of the N feed segments to supply power to a feed segment determined to enter a train according to a result of the detection, and cut off power to a feed segment through which the train passes. A driving method of a power feeding device is provided.

As described above, according to an exemplary embodiment of the present invention, the feeder line is divided into a plurality of segments, and power is supplied to each segment, but only the segment is supplied according to the presence or absence of a train traveling over the feed segment. The feeding segment is designed to have a different length depending on the traveling position, thereby providing power efficiently.

1 is a diagram illustrating a power feeding device according to an embodiment of the present invention.
2 is a view illustrating one of a power feeding segment in a power feeding device according to an embodiment of the present invention.
3 is an exemplary view showing the structure of the inverter in detail.
4 is a diagram illustrating a case where the length of the power feeding segment is different according to the driving position of the train.
5 is a diagram illustrating the configuration of the train detection unit 120.
6 is a view illustrating a mounting position of the train detecting unit 120.
7 is a diagram illustrating an installation position of the train detecting unit 120 installed in a plurality of power feeding segments.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a view illustrating a power feeding device according to an embodiment of the present invention, FIG. 2 is a view showing any one of a feeding segment, and FIG. 3 is a view showing the inverter unit in detail.

Hereinafter, a power feeding device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

As illustrated in FIG. 1, a power feeding device according to an embodiment of the present invention is a device for supplying power to N (eg, N is a natural number of two or more) power feeding segments, the power feeding segment 110, and the train detecting unit 120. , A control unit 130, an inverter unit 140, and a DC power supply 150. In this embodiment, the case where N is 3 will be described by taking an example.

The DC power supply 150 may supply DC to the inverter unit 140 by receiving a single-phase AC power and converting the DC power to output the DC.

The inverter unit 140 includes N inverters for supplying power to the N power feeding segments.

As shown in FIG. 3, the inverter unit 140 connects (L +) legs, which are circuits in which two switching elements are connected in series between one end and the other end of the DC power supply 150, in parallel (N + 1). Among the (N + 1) legs 141, 142, 143, and 144, N feed lines are connected to each of the two legs by connecting the feed lines between the contacts connected to each other within the legs to form a full bridge. Supply power.

That is, the legs 141, 142, 143, and 144 are resonant inverters. For example, the legs 141, 142, 143, and 144 are resonant inverters for generating a switching voltage for the output voltage of the DC power supply 150. Q4B).

As shown in FIG. 3, the feed line is configured in the form of a plurality of feed segments 112, 114, and 116. By driving, three resonant inverters can be configured. In addition, as a method of connecting the feed segments 112, 114, and 116 to the legs 141, 142, 143, and 144, a method of connecting each segment between legs that are physically adjacent to each other as shown in FIG. 3 may be used. have.

That is, if one feed segment is connected between one leg and another leg, and one of the two legs already connected and another feed segment are connected between one leg among the other legs to which the feed segment is not connected, The feed segment of is connected. In the case where the third feed segment is connected again, the third feed segment is connected by connecting another feed segment between one leg among the legs to which the feed segment is already connected and one leg among the other legs to which the feed segment is not connected.

First and second switching elements Q1A and Q1B, third and fourth switching elements Q2A and Q2B, fifth and sixth switching elements Q3A and Q3B, and seventh and eighth switching elements Q4A and Q4B. ) Correspond to each other and electrically connected one-to-one between the output ends of the DC power supply 150 to form the first to fourth legs. Here, the first leg 141 and the second leg 142 forms a first inverter to supply power to the first feed segment 112, the second leg 142 and the third leg 143 is a first leg A second inverter is formed to supply power to the second feed segment 114, and the third leg 143 and the fourth leg 144 form a third inverter to supply power to the third feed segment 116. do.

The first inverter, the second inverter, and the third inverter are controlled on / off by the control of the controller 130 to selectively supply power to the segments 112, 114, and 116.

The configuration of the feeder of the type as shown in FIG. 3 shows an example of one of the connectable forms, and the feeder of the present invention is not limited to the form as shown in FIG. 3 and can connect the feed segments between the legs in various forms. have.

On the other hand, as shown in Figure 2, the feed segment is a feed core 220 having a predetermined width and length in the longitudinal direction of the rail and the feed line 210 wound on the top of the feed core 220 is supplied with power Include.

The power feeding core 220 has a bent portion 222 in a form in which both ends are bent in a c-shape and extends in the longitudinal direction of the railway line. In addition, the power feeding core 220 may extend in the longitudinal direction of the rail with the bent portion 222 and the central protrusion 224 in the form in which the center portion is protruded in the form of both ends bent in the E-shape. In FIG. 3, the bent portion 222 and the central protrusion 224 may protrude toward the road surface. In addition, as shown in FIG. 1, the power feeding core 220 is located at the center portion in the width direction of the railway line.

The feed line 210 may have a shape wound around the top of the feed core 220, may be connected to each inverter in the inverter unit 140, and may be covered with a nonmagnetic insulator 212.

The train detecting unit 120 detects a position of a train driving on each feeding segment and transmits the detected information to the control unit 130.

The control unit 130 may turn on / off the N power feeding segments 112, 114, and 116 to supply power to the power feeding segments that are determined to be running by the train according to the detection result of the train detecting unit 120. Control the switching.

Therefore, when the first train detection unit 122 detects a train traveling on a railroad track, and the second train detection unit 124 and the third train detection unit 126 do not detect a train, the controller 130 The first and second switching elements (Q1A, Q1B), the third and fourth switching elements (Q2A, Q2B) to turn on the first inverter (On), the second inverter and the third inverter is Off (Off) To control on / off of the fifth and sixth switching elements Q3A and Q3B and the seventh and eighth switching elements Q4A and Q4B.

4 is a diagram illustrating a case where the length of the power feeding segment is different according to the driving position of the train.

As shown in Fig. 4, when the train is located in a predetermined area near the station where the train stops, the length C of the power feeding segment is configured to be short, and the power feeding segment when it is located at a place far from the predetermined area in the station. The length A of is configured to be longer than the length in the predetermined zone near the station. Here, the predetermined area may be changed based on whether it is within a predetermined distance (for example, 500 m) from the train station. In addition, in a predetermined area within a train station where the train in the station stops, the length of the feeding segment is shortest, and the length of the feeding segment is longer as the distance from the predetermined area is longer, but the distance farther than a predetermined distance has a certain length. Can be configured.

On the other hand, the power supply device according to an embodiment of the present invention, as shown in Figure 4, the power supply device and the current collector 160, the power supply device according to an embodiment of the present invention is N (where N Is a device for supplying power to two or more natural number) power supply segments, and includes a power supply segment 110, a train sensing unit 120, a control unit 130, an inverter unit 140, and a direct current power source 150. The power feeding device supplies electric power to N feeding segments (where N is a natural number of two or more), each feeding segment having a predetermined width and length in the longitudinal direction of the railway as shown in FIG. 2. It includes a feeder wound on the upper portion of the power supply. Here, since the operations of the power supply segment 110, the train detecting unit 120, the control unit 130, the inverter unit 140, and the DC power supply 150 have been described above, a detailed description thereof will be omitted.

The current collector 160 generates an induced electromotive force by interacting with the magnetic flux generated by the power feeding device to charge the self-contained battery (not shown) to supply the power necessary for the operation of the train. For reference, in FIG. 4, the current collector 160 may be mounted at a lower portion of the train. For convenience, the current collector 160 may be mounted, and the illustration of the train traveling on the rail is omitted.

On the other hand, when the train equipped with the current collector 160 is located in a location where the length of the feed segment 110 is relatively short, the traveling speed of the train is relatively slow, while the length of the feed segment is relatively long. In the case of driving, the speed of the train is relatively high. Accordingly, the length of the feed segment 110 in a position designed to increase the speed of the current collector 160 is long, and the length of the feed segment 110 in a position designed to slow the speed of the current collector 160 is short. Design.

On the other hand, the driving method of the power feeding device according to an embodiment of the present invention, in the driving method of the power feeding device for supplying power to the N (but N is a natural number of two or more) power feeding segments, each driving segment is running on Sensing the position of the train and controlling switching of the N power feed segments to supply power to the power feed segment that the train is determined to be driving in accordance with the detection result.

Here, the step of sensing the position of the train and the step of controlling the switching correspond to the operations of the train detecting unit and the control unit, and thus detailed description thereof will be omitted.

5 is a diagram illustrating the configuration of the train detection unit 120.

As shown in FIG. 5, the Tx module 510 of the train is mounted at the front of the train, and the Tx module 510 is operated while transmitting its ID or the ID of the corresponding train.

 On the other hand, the train detection unit 120 receives the short-range communication data transmitted from the Tx module 510 for generating a signal by a method such as RFID, infrared communication, etc. On detection unit 121 for turning on the power supply segment (ON) And an off detector 122 for receiving near field communication data transmitted from the Tx module 510 to turn off the power supply segment.

6 is a view illustrating a mounting position of the train detecting unit 120.

In FIG. 6, the shape of the power feeding core 220 may be integrally formed as shown in FIG. 2, but a method of installing a plurality of narrow feeding core pieces 221 at a predetermined interval may be used.

As shown in FIG. 6A, the positions of the train detection unit 120 (that is, the first train detection unit 121 and the train detection unit 122) for turning on / off the power supply segment are Located between different feed segments (positions 1-1, 1-2), at a point spaced laterally a predetermined distance of the feed segment (positions 2-1, 2-2), or as shown in B of FIG. The inside of the power feeding core 220 may be located at a point where a portion of the central protrusion is removed (positions 3-1 and 3-2). In particular, when located at a position spaced apart a predetermined distance in the feed segment (positions 2-1, 2-2), it may be located between the track and the feed core as shown, or located outside the track (position 4- 1, 4-2).

The first train detection unit 121 receives the Tx signal transmitted from the Tx module 510 mounted on the train and transmits information on the received Tx signal to the controller 130. In this case, the controller 130 controls the switching so that the inverter is turned on to supply power to the feed segment located in front of the train when viewed in the train progress direction. For example, when receiving the information on the x signal from the first train detection unit 121, the controller 130 controls the switching of the first leg 141 and the second leg 142 to feed the first feed segment. Power 112.

The second train detecting unit 122 receives the Tx signal transmitted from the Tx module 510 mounted on the train and transmits information on the received Tx signal to the controller 130. In this case, the controller 130 controls the switching so that the inverter is turned off in order to cut off power to the feed segment passed by the Tx module 510 when viewed in the train progress direction. For example, when receiving the information on the Tx signal from the second train detecting unit 122, the controller 130 controls the switching of the first leg 141 and the second leg 142 to feed the first feed segment. The power supplied to the 112 is cut off.

In FIG. 6, the first train detection unit 121 and the second train detection unit 122 are divided and displayed, but there is no difference therein, and the train detection unit before the train enters becomes the first train detection unit 121. After the train enters, the train detecting unit detecting the case where the train starts to exit again becomes the second train detecting unit 122, and one train detecting unit enters the train, enters the power supply segment, and enters the adjacent segment. Simultaneously.

7 is a diagram illustrating an installation position of the train detecting unit 120 installed in a plurality of power feeding segments. Although the train sensing unit 120 is described as being positioned between the feed segments in FIG. 7, it may be positioned adjacent to the side of the feed segment or the upper portion of the feed core inside the feed segment as shown in FIG. 6.

As illustrated in FIG. 7, one train detecting unit 121, 122, 123 receives the Tx signal transmitted from the Tx module 510 mounted on the incoming train, and transmits the Tx signal to the controller 130. The controller 130 controls the switching of the inverter unit 140 so that the power of the feeding segment that is to be entered is supplied and the power of the passing feeding segment is cut off. For example, when the second train detecting unit 122 receives the Tx signal transmitted from the Tx module 510 mounted on the train and transmits the Tx signal to the control unit 130, the control unit 130 may generate power of the first feed segment. Blocking and controlling the switching of the inverter unit 140 so that the power of the second feed segment is supplied.

As described above, the present invention divides the feed line into a plurality of segments and supplies power to each segment, but supplies power only to the segment according to the existence of a train traveling on the upper feed segment, and feeds according to the driving position of the train. It is a useful invention for generating the effect of efficiently supplying power by designing the segments to have different lengths.

Claims (14)

In a power supply device for supplying power to N (where N is a natural number of two or more) power feeding segments,
A train detecting unit detecting a position of a train running on each feeding segment; And
And a controller configured to control switching of the N power feeding segments to supply power only to the power feeding segments determined to be running by the train according to the detection result of the train detecting unit.
Each said feed segment,
A feed core having a predetermined width and length in a longitudinal direction of the railway; And
A feeder wire wound on an upper portion of the feed core to receive power
Including,
The feed segment on the track of a predetermined area near the station where the train stops is shorter than the track of a place outside the predetermined zone in the station, and the feed on the track of a place outside the predetermined zone in the station And the length of the segment is longer than the length of the feeding segment located on the railway in a predetermined area near the station where the train stops.
According to claim 1, The power supply device,
An inverter unit including N inverters for supplying power to the N feeding segments; And
DC power supply for supplying power to the inverter unit
A power feeding device comprising a.
The method of claim 2, wherein the N inverters,
Connect (L +) legs, which are circuits in which two switching elements are connected in series, between one output terminal and the other end of the DC power supply in parallel, and for each of the two legs of the (N + 1) legs. A power feeding device characterized by supplying power to N feed lines in such a way as to form a full bridge by connecting each feed line between the contacts connected to each other within the legs.
The method of claim 1,
The power feeding core is a c-shaped feed device characterized in that both ends of the bent in the form bent in the form bent upwards and extend in the longitudinal direction of the rail.
The method of claim 1,
The power feeding core is a power feeding device characterized in that both ends are bent in the form of an E-shape and the center portion is protruded, but the protruding portion faces upward and extends in the longitudinal direction of the railway.
The method of claim 1,
The train detecting unit detects a signal generated from a train and transmits it to the control unit.
The method according to claim 6,
The control unit controls the switching of the inverter so that the power of the feed segment to be entered the train is supplied based on the direction of travel of the train and the switching of the inverter so that the power is cut off to the feed segment passing the train. Power feeding device.
The method of claim 1,
The position of the train detection unit is a power feeding device, characterized in that the position between the feeding segment or the lateral predetermined distance of the feeding segment, or the upper portion of the feeding core.
The method of claim 1,
The position of the train detection unit is a power feeding device, characterized in that the position between the feeding segment or the lateral predetermined distance of the feeding segment, or the upper portion of the feeding core.
In a power supply device for supplying power to N (where N is a natural number of two or more) power feeding segments,
A train detecting unit detecting a position of a train running on each feeding segment; And
And a control unit controlling switching of the N power feeding segments to supply power only to the power feeding segments determined to be running by the train according to the detection result of the train detecting unit.
Each said feed segment,
A feed core having a predetermined width and length in a longitudinal direction of the railway; And
A feeder wire wound on an upper portion of the feed core to receive power
/ RTI >
The feeding core has an E-shaped both ends are bent and the center portion is protruding, but the protruding portion is directed upward and extends in the lengthwise direction of the railway line,
When the position of the train detecting unit is the upper portion of the power feeding core, the portion of the train detecting unit located in the power feeding core, characterized in that the protruding portion is removed.
delete In a power supply device having N (where N is a natural number of two or more) power feeding segments to supply power to a train,
The feeding device is characterized in that the length of the feeding segment located in a predetermined zone in the station where the train stops is the shortest, and the length of the feeding segment becomes longer as it is located farther from the predetermined zone in the station.
N (where N is a natural number of two or more) power is supplied to each of the feed segments, and each feed segment is wound on a feed core having a predetermined width and length in the longitudinal direction of the rail and the feed core to supply the power. A feeder including a feeder receiving; And
Including a current collector for generating an induced electromotive force by the power feeding device,
The feeding device,
The shorter the length of the feed segment, the slower the running speed of the current collector, the longer the length of the feed segment, the faster the current collector is characterized in that the faster running speed of the current collector.
In the driving method of a power supply device for supplying power to N (where N is a natural number of two or more) power supply segments,
Detecting the position of a train running on each feed segment; And
Controlling switching of the N feed segments to supply power to a feed segment determined to enter a train according to a result of the detection, and cut off power to a feed segment through which the train passes;
Method of driving a power feeding device comprising a.

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