KR101473413B1 - Power Supply Circuit and Power Supply Method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a feeder for power transmission and a feeding method for transmitting electric power to an electrically driven transport organ. More particularly, the present invention relates to a feed line for power transmission and a power feeding method, in which a capacitor, which is a component of a feed line, is disposed outside a traveling path, thereby easily connecting a plurality of capacitors and extending the length of the segment.

Description

TECHNICAL FIELD [0001] The present invention relates to a power supply circuit,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a feeder for power transmission and a feeding method for transmitting electric power to an electrically driven transport organ. More particularly, the present invention relates to a feeder for power transmission and a power feeding method for extending a length of a segment by easily connecting a plurality of capacitors by positioning a capacitor, which is a component of the feeder line, outside a traveling path.

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

As an alternative to pollution prevention and to reduce reliance on petroleum energy, electric power-driven vehicles driven by electricity have been developed.

However, the electric power collecting vehicle developed to date requires a long time connection with an external power supply device using a plug or the like in order to charge the battery, and there is a disadvantage that the distance that can be operated only by one charge is very limited.

Recently, a magnetic induction type electric power collecting vehicle has been highlighted as an alternative to an electric power collecting vehicle using a battery.

A magnetic induction type electric power collecting vehicle essentially requires a feeder (a feeder road or a railway) to supply electricity. In order to charge the electric power required for the operation of the electric power collecting vehicle of this type, it is sufficient to run on the power supply device. That is, when high-frequency power is supplied to the feeder line, which is a component of the feeder device, while the vehicle is running on the feeder, the electric power collector carries the electric power necessary for traveling by the principle of electromagnetic induction between the feeder line and the current collector It will be supplied.

At this time, the feed line for generating the magnetic flux has an inductance. Since the inductance consumes the reactive power by delaying the phase of the power, the longer the feeder line, the larger the voltage applied to one end. Therefore, a capacitor is connected in the middle of the feeder line to compensate the voltage according to the inductance.

Since the length of the feeder line is determined by how often the capacitor is loaded, a structure or a method is required to secure a large number of capacitors.

The main object of the present embodiment is to provide a power supply line for power transmission and a power supply method in which the compensation capacitor is concentratedly disposed to solve the problem that the position of the compensation capacitor is scattered and maintenance is difficult.

According to an aspect of the present embodiment, there is provided a power feeding device for wirelessly transmitting power to a current collecting vehicle traveling on a pair of railways, comprising: an inverter unit for supplying AC power; And a feed core for receiving the AC power to generate a magnetic flux; a feed core wound around the feed line to transmit the magnetic flux and located in an inner space between the pair of the railways; A power feeding module including at least one resonance capacitor connected to a feed line extending via a connecting path between a point opposite to the other one of the pair of the railway tracks from the inner space as a reference, A power supply device including a power supply segment is provided.

According to another aspect of the present invention, there is provided a power supply device characterized in that the feeder wire is configured to wind the feed core a plurality of times.

According to another aspect of the present invention, there is provided a power supply device characterized in that the feeder line is connected to the resonance capacitor every time it is wound.

According to another aspect of the present invention, there is provided a power feeding device, wherein a plurality of the connecting rods are disposed at predetermined intervals in the longitudinal direction of the railway track.

According to another aspect of the present invention, there is provided a power feeding device, wherein the power feeding core has a predetermined width and a length in the longitudinal direction of the railway.

According to another aspect of the present invention, there is provided a power supply device characterized in that the connection path extends through a lower side of any one of the railways.

According to an aspect of the present embodiment, there is provided a power feeding device provided between a pair of railways for wirelessly transmitting power to a current collector, comprising: an inverter unit for supplying AC power; And at least one power supply segment for receiving the AC power to generate a magnetic flux, wherein the power supply segment includes at least one power supply module connected in series, the power supply module including a feed line for receiving the AC power to generate a magnetic flux; A feed core wound around the feed line to transmit the magnetic flux and located in an inner space between the pair of railways; And a power supply line connected to the power supply line to compensate for a voltage drop due to the inductance of the power supply line, And a resonance capacitor connected to the power supply line extending through the power supply line.

According to another aspect of the present invention, a plurality of the power supply segments are connected to the inverter unit in parallel with each other.

According to another aspect of the present invention, there is provided a power feeding device, wherein the power feeding core extends in the longitudinal direction of the railway track.

According to an aspect of the present embodiment, there is provided a power feeding device for wirelessly transmitting power to a current collector, comprising: an inverter unit for supplying AC power; A magnetic flux generating unit provided in an inner space between the pair of railways and generating a magnetic flux by receiving the AC power; Connected to the magnetic flux generating part extending through a lower side of the railway between a point in the direction of the magnetic flux generating part and a point in the direction opposite to the direction of the other railway and supplies reactive power to compensate for the voltage drop due to the inductance of the magnetic flux generating part And at least one power supply module including a resonance part that is connected to the power supply.

According to another aspect of the present invention, a part or all of the at least one power feeding module is connected in series with each other.

According to another aspect of the present invention, the magnetic flux generating unit includes: a power feeding core for transmitting the magnetic flux; And a power supply line for receiving the AC power to generate the magnetic flux.

According to another aspect of the present invention, there is provided a power feeding device characterized in that the feeder wire winds the feed core.

According to another aspect of the present invention, the feed line is connected to the resonance capacitor at predetermined intervals.

According to an aspect of the present invention, there is provided a power feeding method using a power feeding device for wirelessly transmitting power to a current collecting vehicle running on a pair of railways, comprising: a step of supplying AC power; A magnetic flux generating step of generating a magnetic flux by receiving the AC power; A magnetic flux transfer process for transferring the magnetic flux; And a pair of the pair of railway rods extending in a direction opposite to the other one of the pair of railway tracks in a direction opposite to the other one of the pair of railway tracks, And a voltage compensating step of compensating for a voltage drop due to the inductance used in the magnetic flux generating process by using a resonant capacitor connected to the feed line.

According to the present embodiment, maintenance compensation can be achieved by disposing the compensation capacitor, which is a component of the power supply device, at a position other than the railway.

In addition, it is possible to safely protect the compensation capacitor, which is a relatively fragile element.

It is possible to prevent disconnection of the circuit leading to the compensating capacitor by burying the feeder line leading to the compensating capacitor which is a component of the feed device.

FIG. 1 is a schematic block diagram showing an example of a power feeding device to which a power feeding module according to an embodiment of the present invention can be applied.
FIG. 2 is a perspective view showing a state in which a power supply segment according to an embodiment of the present invention is installed.
Fig. 3 is a perspective view showing the feed segment shown in Fig. 2 in more detail.
FIG. 4 illustrates one feed segment according to one embodiment of the present invention.
5 is a flowchart illustrating a power feeding method using a power feeding device according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if 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.

For reference, in the present specification, the feed segments are used to denote the unit or length constituting the feed path (or railway). The feed segment is used as a term including a plurality of feed modules. For the sake of clarity, for example, a 1 km feed path (or railroad track) includes 5 feed segments with a length of 200 m, each feed segment including 10 feed modules with a length of 20 m .

The direction in which the current collector runs is referred to as the longitudinal direction, and the width of the current collector is referred to as the width direction.

FIG. 1 is a schematic block diagram showing an example of a power feeding device to which a power feeding module according to an embodiment of the present invention can be applied.

The power feeding device includes an inverter section (105) and at least one power supply segment (115-135).

The inverter unit 105 converts the DC power input from the DC power supply 100 or converts the frequency of the AC power to supply the AC power of a predetermined frequency. The inverter unit 105 may be a full bridge inverter.

The common line 110 receives power from the inverter unit 105 and transfers the power to the power supply segments 115 to 135.

The power supply segments 115 to 135 receive AC power from the inverter unit 105 to generate magnetic flux.

Each of the power supply segments 115 to 135 may be connected to the inverter unit 105 in parallel with each other or may be connected to an independent inverter unit 105.

The feeding segments 115 to 135 include resonance units 165 to 185 located outside the railway track 190 and magnetic flux generating units 140 to 160 located between the railway tracks 190.

The resonance units 165 to 185 include a resonance capacitor 320 and the magnetic flux generation units 140 to 160 include a feed module connected in series. The power feeding module includes a plurality of common wire pipes 330, a main body 240, a power feeding core 230, a feeder line 340, and a compensation capacitor.

The specific structure will be described with reference to Figs. 2 to 3, and the features of the components will be described mainly in terms of functions.

The common line pipe 330 is configured such that the power feed line 340 to which electric power is applied so as to generate magnetic fluxes in the other power feed segments 115 to 135 passes through the other power feed segments 115 to 135 so as to pass the power feed segments 115 to 135 while minimizing magnetic flux generation. To 135 and the previous feed segments 115 to 135, respectively. Therefore, the feeder line 340, which does not generate magnetic flux in the feed segments 115 to 135, is directly connected to the next segment through the common pipe 330.

The main body 240 serves as a structure having components of the magnetic flux generators 140 to 160 and guides the magnetic flux to concentrate the magnetic flux toward the upper portion of the main body 240.

The power supply core 230 serves as a passage through which the generated magnetic flux is transmitted, and serves as a structure through which the feeder line 340 can be wound. The feed core 230 has a predetermined width and length in the longitudinal direction of the railway track 190. Also, the feed core 230 has a width smaller than the width between the railway tracks 190 and a length extending in the longitudinal direction of the railway track 190.

The feeder line 340 receives a current to generate a magnetic flux. The feeder line 340 may have a winding structure in which the feed core 230 is repeated a predetermined number of times in order to increase the intensity of the magnetic flux to be generated. The feeder line 340 can be repeatedly connected to the compensation capacitor in accordance with the number of windings. As the number of windings increases, the size of the inductance of the feeder line 340 also increases, so that a larger high voltage is generated. Therefore, compensation capacitors to compensate for high voltage should be connected more frequently.

The feeder line 340 may extend to one end of the railway track 190 and out of the area of travel of the current collector vehicle. The feeder line 340 may extend through the lower end of one side of the railway track 190 and the point where the feeder line 340 extends may be connected to the resonator units 165 to 185. There is no particular limitation on the method of connecting the feeder line 340 through only the two ends of one side of the railway track 190, as long as they are electrically connected. It is also possible to use a hole in the railway track 190 as a connection path 220 or to connect the railway track 190 with a segmented gap 220a formed by segmenting the railway track 190. In this case, when the winding is repeated, the feeder line 340 can be extended to connect the resonator units 165 to 185 at each point where the feeder line 340 approaches the connection path 220.

Here, the feeder line 340 may be extended by making a connecting path 220 below the railway track 190 to exclude the influence of the vibration generated when the collecting vehicle passes over the railway track 190. As the downward movement of the railway track 190 occurs, the magnitude of the pressure and the vibration applied when the current collector passes over is reduced and dispersed. Therefore, the strength of the force applied to the feeder line 340 passing through the connection path 220 is also reduced. The connection path 220 is provided at a position deeper than the depth at which the magnitude of the force or the magnitude of the vibration applied when the current collector passes is less than a predetermined size and the feeder line 340 is extended through the connection path 220, 340 can be reduced.

The resonance units 165 to 185 or the resonance capacitors 320 serve to supply the reactive power so that the resonance point does not differ from the frequency of the input power due to the inductance of the feed line 340 and a high voltage is generated in the feed line 340 Do not compensate the voltage. The resonant capacitor 320 and the compensation capacitor are the same element and play a similar role. However, since the resonance capacitor 320 is provided outside the railway track 190, the resonance capacitor 320 can be free from the risk of volume and breakage. Also, a plurality of capacitors may be provided in a compact form. Therefore, the resonant capacitor 320 can be a capacitor having a high possibility of breakage of high capacity.

One of the power supply segments 115 to 135 may include a plurality of power supply modules connected in series. In other words, the power supply segments 115 to 135 may include power supply modules connected in series with each other. Each of the power supply modules may be constituted by one power supply segment. In this case, however, since excessive current is required in the inverter unit 105, it is difficult to design the power supply module. Therefore, the power supply segments 115 to 135, . The amount of the magnetic flux generated by the power supply segments 115 to 135 varies depending on the size. In order to generate a large magnetic flux, a high voltage must be applied, so that the size of the power supply segments 115 to 135 is limited. However, the high voltage can be compensated by connecting the resonance capacitor 320 provided outside the railway to the power supply module and connecting the compensation capacitor and the power supply module connected in series. Accordingly, it is possible to increase the length of the power supply segments 115 to 135 by connecting more power supply modules in series. Alternatively, the feeder line 340 may be wound more times per feed module to increase the size of the magnetic flux generated by the feed module. The power supply segments 115 to 135 may be connected to the inverter unit 105 in parallel with or independent of the inverter unit 105. A power supply line (not shown) for applying power to a power supply segment (for example, the fifth power supply segment 135) remote from the inverter unit 105 when the inverter unit 105 is physically located at the same point as shown in FIG. 340 must pass through a feed segment (e.g., first feed segment 115) that is proximate to inverter section 105. Also, the magnetic flux generated by the feeder line 340 must be induced in the current collector to be positioned at the upper portion of the feeder. In this embodiment, the feed core 340 is provided on the feed core 230 to generate magnetic flux in the feed segment (for example, the first feed segment 115) The power supply line 340 connected to the power supply segment (for example, the second to fifth power supply segments 120 to 135) remote from the inverter unit 105 is passed through the upper part of the main body 240 as the common line 110, An embodiment with a pipe 330 is presented.

FIG. 2 is a perspective view illustrating a state in which a power supply segment according to an embodiment of the present invention is installed, and FIG. 3 is a perspective view illustrating the power supply segment shown in FIG. 2 in more detail.

All feed segments have basically the same structure, so the first feed segment is illustrated.

The feed segments 115-135 are configured as a series connection of one or more feed modules. The feed module includes a main body 240, a feed core 230, a compensation capacitor, a feeder line 340 and a common line 110. The feed module is provided between the railway tracks 190, do.

The main body 240 is a structure having a trough shape of 'U', and is made of a material such as aluminum or ferrite, for example, so as to reduce an electromagnetic field (hereinafter referred to as EMF) have. Generally, EMFs are generated on the feed road or railroad track 190, which can adversely affect people passing through the periphery and electronics, so that EMFs from the common line 110 and the feeder line 340 It is necessary to have a means for blocking.

The main body 240 can be located in the railway track 190. In particular, when used for a high speed train, the railway track 190 can be disposed between the pair of railway tracks 190 in parallel with the longitudinal direction of the railroad track 190. However, it is not necessarily limited thereto. For example, it can be buried in feeder roads for electric vehicles.

A separate lid (not shown) is placed on the main body 240 to enhance the aesthetics and to provide a protective function and an EMF shielding function. In particular, a cover is necessary when it is buried in the feeder road. In addition, the main body 240 can be connected to a ground (not shown).

The plurality of common lines pipes 330 are made of a magnetic shielding material such as aluminum or ferrite, thereby reducing the amount of EMF generated in the surroundings. The common line pipe 330 is prepared in a predetermined length or arbitrary length unit defined by the power supply module. The common line pipe 330 may include a separate coupling (not shown) so as to be connected to the common line pipe 330 of another power feeding module adjacent in the longitudinal direction, and the common line pipe 330 may be thermally expanded In view of the fact that the pipes expand or contract in the longitudinal direction, it is preferable that the ends of the pipes for common lines 330 adjacent to each other in the coupling do not contact each other.

The power feeding core 230 is a beam of a ferrite material whose cross section is in the form of a crest. It is preferable that the power collecting vehicle is arranged as close as possible to the current collecting vehicle so that charging can take place during the progress. Therefore, the power feeding core 230 is disposed such that the longitudinal direction of the beam shape is parallel to the traveling direction of the current collector, and if the current collector vehicle is traveling in a precisely defined section such as a train, (Not shown).

The power supply core 230 includes a horizontal core 230b, a pair of side vertical cores 230c positioned around both ends of the horizontal core 230b, and an intermediate vertical core 230a positioned in the middle thereof do. The longitudinal length of the middle vertical core 230a is somewhat shorter than the longitudinal length of the side vertical cores 230c. A feeder line 340, which forms a magnetic field by supplying electric energy, is disposed and wound between the spaces formed by the horizontal core 230b and the vertical cores 230c and 230a. When the magnetic flux is generated, the power feeding core 230 functions to lower the magnetoresistance and to help the magnetic flux to be easily transmitted even with the same current. A plurality of fixing brackets 350 may be additionally mounted to fix the power supply core 230 in the main body 240.

A cooling pipe 360 may be provided outside the main body, and water, air, carbon dioxide, liquefied gas, or the like may be used as the coolant passing through the cooling pipe 360. The refrigerant may be supplied from the outside. Further, when the cooling pipe 360 is made of a magnetic shielding material such as aluminum, it serves to reduce EMF that can not be shielded by the side vertical cores 230c of the power feeding cores. In addition, the cooling pipe 360 also functions as a grounding member on both sides, thereby securing safety.

One or more compensation capacitors may be coupled to each feeder line 340. Naturally, the common line 110 may likewise be connected to one or more compensation capacitors. At this time, the compensation capacitor is installed in the main body 240 by cutting the common line pipe 330 by a predetermined length and then connecting the cut line to the common line 110 between the cut portions of the pipe. FIG. 2 shows an embodiment in which the feeder line 340 is wound twice on the feed core 230. FIG. This embodiment is characterized in that it includes the resonance parts 165 to 185 for densely winding the feeder line 340 to the feed core 230, so that it is possible to wind it much more compactly.

The compensation capacitors may be provided in the same number for each of the feed lines 340, and the compensation capacitors may be arranged in pairs so as to be adjacent to each other at the same position in the longitudinal direction of the feed line 340. In addition, the compensating capacitors connected to the feeder line 340 may be configured to have the same capacities when the compensation capacitor is installed. The inductance component of the feeder line 340 may exist due to the length of the feeder line 340 and the voltage may be increased along the feeder line 340 due to the inductance component of the feeder line 340. By providing a plurality of compensation capacitors, 340 can compensate for the voltage due to the inductance and lower it.

In a case where a plurality of compensation capacitors are to be installed, the compensation capacitors are not concentratedly installed in one power supply module or one power supply segment 115 to 135 but distributed to the plurality of power supply modules and the power supply segments 115 to 135 Please install. This is because the withstand voltage may be high when concentrated in one place, and the compensation capacitor or the feeder line 340 may be damaged. Distributed installation means that there must be a resistor or an inductor between the compensating capacitor and the compensating capacitor in a circuit, not the physical distance. As in the present embodiment, if the capacitor 220 is provided in a specific region and the capacitor is connected every time the capacitor 220 is passed when the capacitor 220 is wound, the capacitors are physically close to each other, but they are dispersedly arranged in the circuit.

In this embodiment, the compensation capacitor may be located outside the railway track 190 and may be connected to the feeder line 340 through a wire because the compensating capacitor is only required to be connected to each feeder line 340 of a certain length and does not directly generate the magnetic flux. And a connecting passage 220 passing through both sides of one railway 190 by a method such as a hole or a groove on the railway track 190 or a drainage passage provided below the railway track 190, 190). Since the connection path 220 is close to a specific position on the power supply core 230, when the feeder line 340 is wound around the power supply core 230, the power supply line 230 extends outside the railway track 190 near the connection path 220 to connect the resonance capacitor . The resonance capacitor may be provided symmetrically to both railways 190, but may be provided only on one railway 190. Considering the convenience of maintenance of the resonance capacitor, it is preferable to concentrate it on one railway.

The outwardly extending compensation capacitor may be a large capacity capacitor and the outwardly extending resonance capacitor may be electromagnetically shielded with an outer and a case, except for connection with the feed line 340. The shielding means may be a metallic case such as aluminum.

The power supply module is connected to the resonance capacitor among the components of the resonance units 165 to 185. The resonant capacitor serves to supply the reactive power to compensate for the application of the high voltage due to the inductance generated by the feed line 340. The resonant capacitor supplies the reactive power, but does not directly play a role in generating the magnetic flux, so that the resonant capacitor does not have to be located close to the path of the current collector. Therefore, the resonance capacitor may be provided outside the railway track 190 and may be provided in the shielded case 310 due to external vibration or electromagnetic effects. The feeder line 340 of the feed module may extend out of the railway track 190 and be connected to the resonant capacitor 320 in the caisson 310.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

In this specification, the power supply module of the present invention is described as being mounted on the railroad track 190, but the present invention is not limited thereto. For example, the power supply module may be embedded in a power supply road for an electric vehicle. In the case of being buried in the feeder road, the cover and the separate connecting member for sealingly connecting the power supply modules may be required.

FIG. 4 illustrates one feed segment according to one embodiment of the present invention. In other words, FIG. 2 is a conceptual diagram showing a perspective view shown in FIG. 2 and FIG. 3. FIG.

The feed segments are provided between the railways. One power supply segment is connected to the inverter unit 105 and one or more power supply modules 410 are connected in series. The resonance unit 165 is connected to the power feeding module 410 through a connection path 220 passing through the railway. The resonance capacitor 320 of the resonance unit 165 may be connected to the feed line 340 of the feed module 410.

Of course, the power supply segment may be coupled to the compensation capacitor 420 to adjust the resonance frequency of the entire power supply segment.

5 is a flowchart illustrating a power feeding method using a power feeding device according to an embodiment of the present invention.

AC power is supplied (S510). Rectifies input AC power or generates and supplies AC power of predetermined frequency by using DC power. At this time, an inverter can be used as a main body to supply.

The magnetic flux is generated by using AC power (S520). AC power is applied to the feeder line 340 to generate a magnetic flux. The feed line 340 is positioned in a predetermined winding area, and a magnetic flux whose magnitude varies with time is generated as AC power is applied.

And transmits the generated magnetic flux (S530). And the magnetic flux generated by the feeder line 340 is transmitted through the feed core 230. At this time, since the magnetic flux is concentrated toward the current collector through the power supply core 230, the power transmission efficiency is increased.

In order to correct the phase difference generated in the magnetic flux generation process, reactive power is supplied (S540). In the process of generating the magnetic flux, a phase delay phenomenon occurs in which the phase of the current is lower than that of the voltage. The resonance capacitor 320 is connected to supply the reactive power. By supplying reactive power, the delayed phase is compensated to cause resonance. The high voltage generated by the phase difference is also compensated for. At this time, the physical position of the resonance capacitor 320 can be supplied from the point where the power supply actually takes place to supply the reactive power. At this time, the resonance capacitor 320 passes between the point of the other one of the pair of the railway tracks on the basis of one of the pair of railway tracks and the point of the opposite direction of the other railroad track to the lower side of the railroad track A resonance capacitor 320 connected to the extended feed line may be used.

100: DC power supply 105: Inverter section
110: common line 115 to 135: power supply segment
140 to 160: magnetic flux generating units 165 to 185:
190: railway 210: sleepers
220: connection path 230: power supply core
230a: intermediate vertical core 230b: horizontal core
230c: side vertical core 240: body
310: Cass 320: Resonant capacitor
330: Common wire pipe 340: Feeder wire
350: Fixing bracket 360: Cooling tube

Claims (12)

A power feeding device for wirelessly transmitting electric power to a current collecting vehicle traveling on a pair of railway tracks,
An inverter unit for supplying AC power; And
A feed core for receiving the AC power to generate a magnetic flux; a feed core wound around the feed line to transmit the magnetic flux and located in an inner space between the pair of the railways; And at least one resonance capacitor connected to the feed line extending between the inner space and a point opposite to the other one of the pair of the railway tracks via a connection path, Segments,
Wherein the plurality of connecting rods are located at predetermined intervals in the longitudinal direction of the railway. The method according to claim 1,
The feeder wire,
And the power feeding core is wound a plurality of turns. delete The method according to claim 1,
In the connecting path,
And extends through the lower side of any one of the railways. A power feeding device provided between a pair of railways for wirelessly transmitting electric power to a current collector,
An inverter unit for supplying AC power; And
And a plurality of power supply segments for receiving the AC power to generate a magnetic flux,
Wherein the power supply segment includes one or more power supply modules connected in series,
The feed module includes a feed line for receiving the AC power to generate a magnetic flux;
A feed core wound around the feed line to transmit the magnetic flux and located in an inner space between the pair of railways; And
A power supply line connected to the power supply line to compensate for a voltage drop due to the inductance of the power supply line and to be connected to one of the pair of railroad tracks opposite to the other one of the pair of railroad tracks, And a resonance capacitor connected to the feed line extending through the resonance capacitor,
Wherein the plurality of power supply segments are connected to the inverter unit in parallel with each other. delete A power feeding device for wirelessly transmitting electric power to a current collector,
An inverter unit for supplying AC power; And
A magnetic flux generating unit provided in an inner space between a pair of the railways to receive the AC power to generate a magnetic flux; Is connected to the magnetic flux generating unit extending through a lower side of the railway between a point of the magnetic flux generating unit and a point of a direction opposite to the other one of the railway tracks and supplies a reactive power to compensate for a voltage drop due to the inductance of the magnetic flux generating unit At least one power supply module including a resonance part
And a power supply unit for supplying power to the power supply unit. 8. The method of claim 7,
Wherein at least one or more of the at least one power supply modules are connected in series with each other. 8. The method of claim 7,
The magnetic flux generating unit may include:
A power feeding core for transmitting the magnetic flux; And
A power supply line for generating the magnetic flux by receiving the AC power,
And the power supply unit. 10. The method of claim 9,
The feeder wire,
And the power feeding core is wound. 11. The method of claim 10,
The feeder wire,
And the resonance capacitor is connected to the resonance capacitor at predetermined intervals. A power feeding method using a power feeding device for wirelessly transmitting power to a current collecting vehicle traveling on a pair of railroad tracks,
A process of supplying AC power;
A magnetic flux generating step of generating a magnetic flux by receiving the AC power;
A magnetic flux transfer process for transferring the magnetic flux; And
A pair of the pair of railroad tracks extending from one of the pair of railroad tracks to the other of the pair of railroad tracks in a direction opposite to the other railroad track, A voltage compensation step of compensating for a voltage drop due to the inductance used in the magnetic flux generating process by using a resonance capacitor connected to the feed line,
And a power supply unit.

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