JPH08126229A - Power wave receiving apparatus - Google Patents

Abstract

PURPOSE: To reduce the size of a power wave receiving apparatus by forming a receiving coil having wider right and left side receiving ranges for the transmitting power wave of a transmitting coil in the shape of numeral 8. CONSTITUTION: In opposition to a couple of closing portions 10a, 10b of a power wave transmitting coil 10 in the shape of numeral 8, a couple of power wave receiving coils 1A, 1B wound in the shape of numeral 0 are provided in parallel, outputs of the receiving coils 1A, 1B are rectified by the rectifying circuits 2A, 2B, and each rectified output is added with an adding circuit 3 to output as the power for circuit drive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power wave receiver, and more particularly to a power wave transmitter coil and a power wave receiver coil when receiving a power wave from a power wave transmitter coil wound in a figure 8. The present invention relates to a power wave transmitter / receiver capable of widening a fluctuation allowable distance for receiving a transmitted power wave when the relative position of the power wave fluctuates left and right.

[0002]

2. Description of the Related Art For example, in railway traffic, an automatic train stop device (hereinafter referred to as an ATS device) is installed to safely operate a train. In this ATS device, a ground element for supplying information necessary for train operation from the ground side to the upper side of the vehicle is provided at a predetermined point along the train track. Generally, the ground element has a power source that is supplied with power from a ground power supply facility, but when transmitting fixed information such as point information, a power wave transmission coil installed on the upper side of the vehicle is used. A non-power source ground element is used that supplies a power wave, receives the power wave by a power wave receiving device built in the ground element, converts the energy, and obtains power for driving a circuit in the ground element.

As shown in FIG. 5, a conventional power wave receiving device incorporated in an unpowered ground coil includes a power wave receiving coil 11 for receiving a power wave from a power wave transmitting coil 10 mounted on the vehicle upper side. , A rectifier circuit that rectifies the output of the power wave receiving coil 11
The DC output of the rectifier circuit 12 is used as the power for driving the circuit in the ground element. And the power wave receiving coil
Similar to the power wave transmitting coil 10 wound in the shape of a figure 8, one winding is provided in the shape of a figure 8 and the closed portions 10a and 10b of the power wave transmitting coil 10 and the power wave receiving are provided. The closed portions 11a and 11b of the coil 11 are arranged to face each other. Reference numeral 20 is an AC current supply circuit mounted on the upper side of the vehicle that supplies an AC current to the power wave transmission coil 10.

[0004]

However, in the conventional power wave receiving device, the power wave receiving coil 11 is an 8-shaped coil similar to the power wave transmitting coil 10, so that the left and right response waves that can receive the power wave are generated. There was a drawback that the range was determined by the size and shape of the receiving coil. The situation during this period will be described based on FIGS. 6 and 7.

First, referring to FIG. 6, the power wave transmission coil 10 is shown.
Is wound in the shape of a figure 8, so that an alternating current flows in the direction of the arrow on the right side of the figure in the two closed parts 10a, 10b formed in the figure of a figure 8. Magnetic fluxes in opposite directions are generated in the blocking portions 10a and 10b, as shown on the left side of FIG. In the figure, the dotted line a indicates the center line of the power wave transmission coil 10.

On the other hand, the electric power wave receiving coil 11 provided on the ground side receives the electric power from the electric power wave transmitting coil 10 on the train side, and thus is similarly wound into a figure eight shape. Therefore, for example, when the center of the power wave receiving coil 11 is aligned with the center line a of the power wave transmitting coil 10 as shown in FIG. The respective magnetic fluxes generated at 10a and 10b surely interlink the respective closed portions 11a and 11b of the power wave receiving coil 11. Therefore, an electromotive force is generated in the power wave receiving coil 11 according to Lenz's law, and a current flows in the direction shown in the right diagram in the figure.

However, the electric power wave transmitting coil 10 causes fluctuations such as swinging left and right in the traveling direction due to train vibrations and curves. This variation distance may be large depending on the traveling section. The relationship between the power wave transmitting coil 10 and the power wave receiving coil 11 according to this variation is as follows.

First, FIG. 7B shows a case where the center line a of the power wave transmitting coil 10 is moved to the center of one closed portion 11b of the power wave receiving coil 11 due to train fluctuation. At this time, since the magnetic fluxes interlinking in the blocking portion 11b are in opposite directions and cancel each other, the output is generated by the interlinking magnetic flux only on the blocking portion 11a side as shown in the right figure in the figure. Only the electric current corresponding to the electric power flows, which is reduced to half of that in the case of FIG.

Further, FIG. 7C shows a power wave transmission coil 10
The center line a of the figure shows the case where it moves to the left end of the closed portion 11b of the power wave receiving coil 11. In this case, since magnetic fluxes in the same direction are linked to the two closed portions 11a and 11b of the power wave receiving coil 11, the occurrence of the two closed portions 11a and 11b formed by the figure 8 is generated. The electric powers cancel each other out, and no current flows in the electric power wave receiving coil 11 and the output becomes zero. This situation is the same even when the center line a of the power wave transmitting coil 10 is moved further away from the two closed portions 11a and 11b of the power wave receiving coil 11.

That is, in the conventional power wave receiving coil shape,
The response range in which electric power waves can be received is determined by the size of one block. The receiving coil needs to be about twice as large. Therefore, there is a limit to miniaturization of the power wave receiving coil in order to reliably receive the power wave against any rolling of the train, and as a result, the left and right widths of the unpowered ground coil are limited. There was a limit to narrowing.

By the way, this unpowered ground conductor is installed on the sleepers between the railroad tracks, and it is difficult to perform maintenance work in maintenance of the railroad tracks if the width of the ground conductor is large.
There is a demand for miniaturization of non-powered ground elements. The present invention has been made in view of the above-described conventional problems, and achieves a compact power wave receiving device by downsizing a power wave receiving coil that receives a power wave from an 8-shaped power wave transmitting coil. The purpose is to reduce the size of the non-powered ground element in the case of railway equipment.

[0012]

Therefore, in the invention described in claim 1, in the power wave receiving device for receiving the power wave transmitted from the power wave transmitting coil wound in a figure 8 shape,
Two power wave receiving coils wound in a 0 shape facing the two closed portions of the power wave transmitting coil, two rectifying means for rectifying the output of each power wave receiving coil, and each of the two rectifying means. It is configured by adding means for adding the outputs of the rectifying means.

According to the second aspect of the invention, instead of the two power wave receiving coils wound in the shape of 0, a power wave receiving coil wound in the shape of 8 and a shape of 0 are formed. And a power wave receiving coil wound on the upper and lower sides of the power wave receiving coil. Further, in the invention according to claim 3, the power wave receiving device according to claim 1 or 2 is built in the ground element for receiving the power wave transmitted from the power wave transmitting coil installed on the train. It was configured.

[0014]

According to the structure of claim 1, the relative positional relationship between the power wave transmitting coil and the power wave receiving coil is such that the center of the power wave transmitting coil wound in the shape of 8 is in the shape of 0 facing each other. When it coincides with the center of one of the wound power wave receiving coils,
Since the magnetic fluxes in one of the power wave receiving coils cancel each other, no electromotive force is generated in the power wave receiving coil. However, even in this case, an electromotive force is generated in the other power wave receiving coil wound in the shape of 0 because the magnetic flux from the power wave transmitting coil is interlinked. Further, even when the two power wave receiving coils wound in the shape of 0 enter together in the closed part of one of the power wave transmitting coils facing each other, the two power wave receiving coils form independent closed loops. Since it is configured, an independent electromotive force is generated in each receiving coil. Then, by adding both electromotive forces after rectification, the center of the power wave transmitting coil wound in the shape of 8 is the center of the power wave receiving coil consisting of two coils wound in the shape of 0 facing each other. It is possible to obtain as much power as there would be no fluctuations consistent with.

As a result, when the relative positional relationship between the power wave transmitting coil and the power wave receiving coil is deviated, the left end (or right end) of the power wave receiving coil moves to the right side (or left side) from the center of the power wave transmitting coil. However, the power wave emitted from the power wave transmitting coil can be reliably and efficiently received by the power wave receiving coil, and stable DC power can be obtained. Therefore,
Even if the shape (especially right and left) of the power wave receiving coil is made smaller than the conventional one, the same receiving left and right response distance as before can be obtained
In other words, if the size is the same as the conventional one, the response distance that can be received is larger than that in the conventional one. Therefore, the left and right response characteristics can be improved.

According to the second aspect of the present invention, the center of the power wave transmitting coil wound in a figure 8 shape and the center of one closed portion of the power wave receiving coil wound in a shape of 8 and facing each other. When they match, the magnetic flux linking one of the closed portions of the power wave receiving coil wound in the shape of 8 cancels each other, but the magnetic flux linking the other closed portion forms the shape of 8 in the figure. Independent electromotive force is generated in both the wound power wave receiving coil and the zero-shaped power wave receiving coil.

When both the 8-shaped and 0-shaped power wave receiving coils enter into one closed portion of one of the power wave transmitting coils facing each other, the power wound in the figure 8 shape is obtained. An electromotive force cannot be obtained from the wave receiving coil, but an electromotive force can be obtained from the power wave receiving coil wound in the shape of 0 by the interlinking magnetic flux. As a result, the same effect as that of claim 1 can be obtained, but one side of the power wave receiving coil in which the center of the power wave transmitting coil further wound in the shape of 8 is wound in the shape of 8 and faces each other. Even when it coincides with the center of the occlusion
Since the electromotive force is obtained from both the power wave receiving coil wound in the shape of 8 and the power wave receiving coil wound in the shape of 0, only one of the power wave receiving coils as in claim 1 is obtained. There is no need to obtain electromotive force, and more efficient reception can be performed as compared with the invention of claim 1.

According to the third aspect of the invention, the power wave transmitting coil wound in the shape of a figure 8 on the upper side of the car is relative to the power wave receiving coil which is opposed to the left and right by vibrations or curves of the train. Even if the position is deviated, the magnetic flux always links with any of the combined power wave receiving coils for the reason described above. As a result, even if the power wave receiving coil is made smaller than before, the power wave supplied from the car core side can be reliably and efficiently received on the ground core side, and the required power can be obtained. Can be reliably driven, so that necessary information waves can be stably transmitted from the ground side to the upper side of the vehicle. Therefore, the size of the ground element can be reduced, and the stability of the operation of the ground element can be improved.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a power wave receiving apparatus according to the present invention. The same parts as those in the conventional art are designated by the same reference numerals. In FIG. 1, an alternating current is supplied from an alternating current supply circuit 20 to a power wave transmitting coil 10 having a figure 8 shape,
It is the same that the power wave is transmitted from. The AC current supply circuit 20 and the power wave transmission coil 10 are mounted on the train side to supply the power wave from the train to the ground wire installed on the ground.

The power wave receiving apparatus of this embodiment for receiving this power wave is constructed as follows. That is, the two power wave receiving coils 1 wound in the shape of 0 facing the two closed portions 10a and 10b of the power wave transmitting coil 10 respectively.
A, 1B and these two power wave receiving coils 1A, 1B
Two rectifying circuits 2A and 2B as rectifying means provided for converting the AC output obtained from
And an adder circuit 3 as an adding means provided to add the DC voltages obtained from the rectifier circuits 2A and 2B, and the power wave receiving coils 1A and 1B.
The rectifier circuits 2A and 2B and the adder circuit 3 are built in a non-powered ground element installed on the sleepers of the line.

Next, the operation will be described. From the AC current supply circuit 20 to the power wave transmission coil 10, an AC current (for example, 245
When KH _Z ) is supplied, a magnetic flux is generated from the power wave transmission coil 10 by the Ampere's right-handed screw law. The directions of the magnetic fluxes are different in the two closed portions 10a and 10b forming the figure 8 because the winding directions of the coils are opposite to each other. This magnetic flux links the two power wave receiving coils 1A and 1B facing each other, and as a result, an electromotive force is generated in the coils and an alternating current flows, which is rectified by the respective rectifier circuits 2A and 2B and added. Added by 3,
It is supplied as driving power to each circuit inside the ground element.

Next, in the power wave receiving apparatus of this embodiment, the power wave transmitting coil 10 and the two power wave receiving coils 1 are provided.
Relative positional relationship between A and 1B and power wave receiving coils 1A and 1
The output relationship of B will be described with reference to FIGS. The directions of the current and magnetic flux of the power wave transmission coil 10 are the same as those shown in FIG. First, FIG.
A case where the center of the power wave transmitting coil 10 (shown by the dotted line a in the figure) and the center of the two power wave receiving coils 1A and 1B coincide with each other will be described.

In this case, the power wave receiving coil 1A and the power wave receiving coil 1B have two power wave transmitting coils 10 respectively.
The magnetic fluxes generated from the two closed portions 10a and 10b are interlinked. The power flux receiving coils 1A and 1B are generated by the interlinkage magnetic flux.
According to Lenz's law, the direction of the current flowing through is the direction shown by the arrow on the right side of the figure. Further, when the center of the power wave transmitting coil 10 coincides with the center of one power wave receiving coil 1B as shown in FIG. 2B, the power wave receiving coil 1A
Although only the magnetic flux from the power wave transmitting coil 10a is linked to the
The magnetic fluxes generated from the two closed portions 10a and 10b are linked together.
As a result, the magnetic flux in the power wave receiving coil 1B is canceled by both magnetic fluxes, and no electromotive force is generated in the power wave receiving coil 1B. However, even in this case, electromotive force is generated in the power wave receiving coil 1A by the magnetic flux from the power wave transmitting coil 10a. Therefore, in this case, as shown in the right side of FIG. 7B, a current flows in the arrow direction in the power wave receiving coil 1A.

Next, when the center of the power wave transmitting coil 10 coincides with the left end of the power wave receiving coil 1B as shown in FIG. 2 (C), the power wave receiving coil 1A and the power wave receiving coil 1
Both B face the one closed portion 10a of the power wave transmitting coil 10, and the magnetic fluxes in the same direction from the closed portion 10a are linked to both the power wave receiving coils 1A and 1B. In this case, since the power wave receiving coil 1A and the power wave receiving coil 1B are both configured independently, the power wave receiving coil 1
A, electromotive force is generated in the power wave receiving coil 1B,
(C) Current flows in the same direction as shown on the right side of the figure. In this situation, even when the power wave transmitting coil 10 further moves to the left in the figure (when the power wave receiving coil 1A and the power wave receiving coil 1B relatively move to the right), both coils are linked. Since the number of magnetic flux does not change, similar electromotive force and current are generated. In this respect, since the conventional structure has the power wave receiving coil 11 wound in the shape of a figure 8, in this case, the electromotive forces generated in the closed loops cancel each other out, and the electromotive force becomes zero. Is very different from. In the present embodiment, in an extreme case, the power wave transmitting coil has the power wave receiving coils 1A and 1A facing each other due to rolling of the train.
Even when the position B is protruded, the power wave can be received depending on the extent of the protrusion.

In each of the above cases, each electromotive force generated in the power wave receiving coil 1A and the power wave receiving coil 1B is
According to Lenz's law, an alternating current having the same frequency as the current flowing through the power wave transmission coil 10 is generated, but in order to obtain the direct current necessary to drive the logic circuit in the ground element, the rectifier circuits 2A, 2
AC is converted to DC at B. After that, the respective outputs are added up by the adder circuit 3 and then supplied to the respective circuits.

As described above, in this embodiment, the power wave receiving coil is constructed by arranging the two independent 0-shaped power wave receiving coils 1A and 1B side by side. Even if the center line a of the transmission coil 10 is displaced from the end of the reception coil 1A or 1B, the two power wave reception coils 1A and 1B are different from the power wave transmission coil 10.
If at least one of them faces each other even partially, an electromotive force is always generated, and since the electromotive forces from both coils are rectified and added, stable DC power can be obtained.

That is, the response range on the side of the transmission coil where the power wave can be received on the side of the reception coil is from the end of the reception coil to the end. If the left and right widths are the same, the response distance can be doubled. Therefore, it is possible to increase the receivable relative moving distance between the transmitting coil and the receiving coil compared with the conventional one, and if the permissible variable distance is the same, the left and right width of the receiving coil can be significantly reduced, and the receiving coil can be downsized, As a result, the size of the unpowered ground element can be reduced. In addition, the left and right response characteristics are wider than before, and the power wave supplied from the train car side can be reliably and efficiently received by the ground car side over a wide fluctuation range of the train. The stability of operation can be improved.

Next, FIG. 3 shows a second embodiment of the present invention.
The same parts as those in FIG. 1 are designated by the same reference numerals. In FIG. 3, the power wave receiving coil 4 is formed by winding the power wave receiving coil 5 in a shape of 0 across both of the two closed portions 10a and 10b of the power wave transmitting coil 10. Wave transmitting coil
The coil 4 and the coil 5 are arranged to face each other in the shape of a figure 8 and face each other. And
Both power wave receiving coils 4 and 5 are built in the ground element together with the rectifying circuits 2A and 2B and the adding circuit 3. The operation until the power energy received by the power wave receiving coils 4 and 5 is converted to generate the output as the drive source of the circuit in the ground is the same as that of the first embodiment, and therefore the description thereof is omitted. 4A to 4C of the relative positional relationship between the power wave transmitting coil 10 and the two power wave receiving coils 4 and 5 and the output relationship of the power wave receiving coils 4 and 5 in the power wave receiving apparatus of the present embodiment. ) Will be described. still,
The directions of the current and magnetic flux of the power wave transmission coil 10 are the same as those in FIG.

First, the case where the center of the power wave transmitting coil 10 (shown by the dotted line a in the figure) and the centers of the two power wave receiving coils 4 and 5 coincide with each other as shown in FIG. 4A will be described. . In this case, the magnetic flux generated in the power wave transmitting coil 10 links the power wave receiving coils 4 and 5. Then, as shown in the figure, the magnetic flux interlinking the power wave receiving coil 4 is generated by the power wave receiving coil 4 in each of the blocking portions 10 a, 10 a of the power wave transmitting coil 10.
Since it is evenly straddling both of b and facing each other,
The magnetic fluxes from a and the blocking portion 10b cancel each other out. Therefore, no electromotive force is generated in the power wave receiving coil 4. on the other hand,
The magnetic flux that links the power wave receiving coil 5 is
Since the electromotive force is generated in the direction of the figure 8 in both b, the electromotive force generated in both coils is added. Therefore, in this case, as shown on the right side of FIG.
Current flows in the direction of the arrow.

Next, as shown in FIG. 4B, the center of the power wave transmitting coil 10 is located at one closed portion 5b of the power wave receiving coil 5.
When they coincide with the center of the magnetic field, the magnetic fluxes generated in both the closed portions 10a and 10b of the power wave transmission coil 10 are interlinked in the closed portion 5b, but the magnetic fluxes cancel each other out. No electromotive force is generated on the closed portion 5b side. On the other hand, an electromotive force is generated in the other closed portion 5a because the magnetic flux generated in the closed portion 10a of the power wave transmission coil 10 is interlinked. Further, since all the magnetic fluxes on the side of the electric power wave transmitting coil 10 which are the same as those described above interlink the electric power wave receiving coil 4, an electromotive force is generated in the electric power wave receiving coil 4 by the remaining magnetic flux after the cancellation. Therefore, in this case, as shown in the right side of FIG. 7B, a current flows in the direction of the arrow through the power wave receiving coils 4 and 5.

Next, when the center of the power wave transmitting coil 10 coincides with the left ends of the power wave receiving coils 4 and 5 as shown in FIG. 4C, the power wave transmitting is performed in the closed portions 5a and 5b. coil
The magnetic fluxes generated in the closed portion 10a of 10 are interlinked, but the magnetic fluxes are in the same direction, and the electromotive forces generated in the coil of figure 8 cancel each other out. No electricity is generated. On the other hand, since the same magnetic flux links the power wave receiving coil 4, an electromotive force is generated in the power wave receiving coil 4 by the magnetic flux. So in this case,
(C) As shown on the right side of the drawing, a current flows in the power wave receiving coil 4 in the arrow direction. In this situation, the power wave receiving coil 4
The same applies when the left end of the power wave receiving coil 5 in the figure is further away from the center of the power wave transmitting coil 10.

As a result, similar to the first embodiment, even if the variation on the side of the transmission coil 10 is large and the center line a of the transmission coil 10 is deviated from the end of the reception coil 1A or 1B, the power wave transmission coil 10 is affected. On the other hand, two power wave receiving coils 1A and 1B
If at least one of them faces each other even partially, an electromotive force is always generated, and since the electromotive forces from both coils are rectified and added, stable DC power can be obtained.

The above-described first and second embodiments have been described for one coil for simplification, but in reality, they are wound a plurality of times to obtain a predetermined electric power. In principle, even if the number of turns of each coil is different, there is no problem, but it is desirable to unify them so that the characteristics are the same. Further, the power wave receiving coil 4 and the power wave receiving coil 5 may be upside down from those shown in FIG. 3, or may be wound so as to be stacked on the same winding core via an insulating material. Also,
Although the shape of each coil is described as a square in the figure, it is not limited to a square in consideration of Lenz's law. Further, although the description is limited to two sets of coils, this is because the advantages in terms of implementation such as economy, space and manufacturing are taken into consideration. Therefore, theoretically, the configurations of the first embodiment and the second embodiment are It is also possible to combine them appropriately, for example, to configure with four sets of coils.

[0034]

As described above, the present invention (Claim 1).
According to the method, two power wave receiving coils wound in the shape of 0 are arranged in parallel, and the outputs of both coils are rectified and added. Therefore, the power wave transmitting coil and the power wave receiving coil are Even if the relative positional relationship shifts to a position where the conventional structure cannot receive the signal, the power wave output from the power wave transmitting coil can be reliably and efficiently received by the power wave receiving coil and converted to the required DC power. To be done. Therefore, the response characteristic can be improved as compared with the conventional case. In other words, if the response characteristic is equivalent to that of the conventional one, the shape (especially right and left) of the power wave receiving coil can be made small, and the power wave receiving apparatus can be downsized.

Further, according to the present invention (claim 2), the power wave receiving coil wound in the shape of 8 and the power wave receiving coil wound in the shape of 0 are arranged vertically and each coil is arranged. Since the outputs are rectified and added, the same effect as that obtained in claim 1 can be obtained. Furthermore, 8
Even when the center of the power wave transmitting coil wound in the shape of "8" coincides with the center of one closed part of the power wave receiving coil which is wound in the shape of "8" and confronts, it is wound in the shape of "8". Since the electromotive force is obtained from both the power wave receiving coil and the power wave receiving coil wound in the shape of 0, it is not necessary to obtain the electromotive force from only one power wave receiving coil as in claim 1. , More efficient reception is possible, and as a result, more stable DC power can be obtained.

Further, according to the present invention (Claim 3), the power wave receiving device according to Claim 1 or 2 is built in the ground element, and as a result, even if the train fluctuation is large, the power wave is supplied from the train side. The power wave can be received reliably and efficiently on the ground side, and the necessary power can be obtained by rectifying and adding this power wave,
By driving the logic circuit in the ground train, it becomes possible to stably transmit the information waves necessary for train operation from the ground train to the train train train.
In addition, the size of the ground element can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of a power wave receiving apparatus according to the present invention.

FIG. 2 is a diagram for explaining the states of the interlinking magnetic flux and the generated current on the power wave receiving coil side according to the relative positional relationship between the power wave transmitting coil and the power wave receiving coil according to the above embodiment.

FIG. 3 is a configuration diagram of a second embodiment of a power wave receiving apparatus according to the present invention.

FIG. 4 is a diagram for explaining the states of the interlinking magnetic flux and the generated current on the power wave receiving coil side according to the relative positional relationship between the power wave transmitting coil and the power wave receiving coil according to the above-described embodiment.

FIG. 5 is a configuration diagram of a conventional power wave receiving device.

FIG. 6 is a diagram for explaining the states of magnetic flux and current generated in an 8-shaped power wave transmission coil.

FIG. 7 is a diagram for explaining the states of the interlinking magnetic flux and the generated current on the side of the power wave receiving coil according to the relative positional relationship between the conventional power wave transmitting coil and the power wave receiving coil.

[Explanation of symbols]

 1A, 1B, 4,5 Power wave receiving coil 2A, 2B Rectifier circuit 3 Adder circuit

Claims (3)

[Claims] 1. A power wave receiving device for receiving a power wave transmitted from a power wave transmitting coil wound in a figure 8 shape, wherein a shape of "0" which faces the two closed portions of the power wave transmitting coil, respectively. Power comprising two power wave receiving coils wound around the two, two rectifying means for rectifying the outputs of the respective power wave receiving coils, and an adding means for adding the outputs of the rectifying means. Wave receiver. 2. A power wave receiving coil wound in a shape of 8 and a power wave receiving coil wound in a shape of 0 instead of the two power wave receiving coils wound in the shape of 0. The power wave receiving device according to claim 1, wherein the power wave receiving device and the power wave receiving device are arranged vertically to face the power wave transmitting coil. 3. The power wave receiving device according to claim 1, wherein the power wave receiving device is incorporated in a ground element for receiving a power wave transmitted from the power wave transmitting coil installed on a train.