JPH0855714A - Power generating coil device - Google Patents

Abstract

PURPOSE:To remarkably improve the input-output converting efficiency of a power generating coil device by providing a first external magnet having a pair of N and S poles and setting a second external magnet so that its N and S poles can become opposite in direction to the N and S poles of the first external magnet. CONSTITUTION:A first external magnet 1 having a pair of N and S poles which are brought into contact with both end sections of a first outside leg section 111 or their vicinities in the longitudinal direction of the sections 111 is provided on the outside of a transformer core 11. Similarly, a second external magnet 2 having a pair of N and S poles which are brought into contact with both end sections of a second outside leg section 112 or their vicinities in the longitudinal direction of the sections 112 and are directed in the opposite directions to the N and S poles of the magnet 1 is arranged on the outside of the section 112. Therefore, the input-output conversion efficiency of a power generating coil can be improved remarkably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto coil device. More specifically, the primary coil and the secondary coil have a transformer wound around a transformer iron core and an external magnet arranged in contact with a part of the transformer iron core to improve input / output conversion efficiency. The present invention relates to an improved generator coil device.

[0002]

2. Description of the Related Art When boosting with a transformer for voltage conversion, usually, the number of turns N2 of the secondary coil must be made larger than the number of turns N1 of the primary coil, and the entire transformer becomes large. Therefore, as the size of the entire transformer increases, the weight also increases, making it difficult to handle and transport.
There was a problem that the cost would be high. In order to solve such a problem, the inventor of the present application has proposed a new static power generating coil device in Japanese Patent Application No. 5-117681. The static generator coil device according to the above proposal is a transformer in which a primary coil and a secondary coil are wound around separate leg iron cores of a transformer iron core, and both ends of the primary coil side leg iron cores. External magnets arranged so that the N pole and the S pole are in contact with each other (or in the vicinity thereof), the direction of the input current flowing in the primary coil is determined by the direction of the magnetic flux generated in the iron core of the primary coil side leg. It is characterized in that the direction is set to be opposite to the direction of the magnetic flux that linearly goes from the north pole to the south pole of the external magnet.

Assuming that the input voltage is intermittently supplied to the primary coil, the operating principle of this generator coil device is that almost all magnetic flux from the N pole to the S pole of the external magnet is supplied during the non-supply period of the input voltage. There is almost no magnetic flux that passes through the iron core on the side of the primary coil side and bypasses the iron core on the side of the secondary coil. On the other hand, during the supply period of the input voltage, the magnetic flux generated by the primary coil is circulated in the secondary coil side leg iron core from the primary coil side leg iron core through the transformer iron core. pass. In this case, the primary coil side leg iron core is in a substantially magnetic saturation state, and the magnetic resistance in the primary coil side leg iron core becomes high as viewed from the external magnet, so that the magnetic flux from the N pole of the external magnet to the S pole is increased. , Almost all bypass the leg core of the secondary coil side. Therefore, the amount of change in the magnetic flux that intersects the secondary coil due to the intermittent flow of the input current in the primary coil is substantially increased by the amount of the magnetic flux of the external magnet, and the electromotive force corresponding to this magnetic flux change is Inducted by the coil.
It is desirable that the magnetic flux passing through the iron core of the primary coil side leg is saturated when the primary coil is energized. That is, when the magnetic flux of the primary coil side leg iron core becomes saturated due to the energization of the primary coil, all the magnetic flux generated by the external magnet passes through the secondary coil side leg iron core, and the magnetic flux of the external magnet This is because the can be effectively used. For this purpose, if the iron cores are made of the same material, it is desirable that the cross-sectional area of the primary coil side leg iron core is smaller than the cross-sectional area of the other portions.

As described above, since the primary coil has a role of inducing an electromotive force in the secondary coil and a role of a switch for switching the direction of the magnetic flux generated by the external magnet, the magnetic flux generated by the external magnet is effectively used. It is possible to realize a static type generator coil device which is used in the above to extract in the form of electric energy. Therefore, the turns ratio N2 /
It is possible to boost the voltage without increasing N1. Of course, if the winding ratio is increased, further boosting is possible.
By the way, in the power generating coil device as described above, the direction of the magnetic flux that intermittently passes through the primary coil side leg iron core and the secondary coil side leg iron core is one direction, and due to the hysteresis phenomenon of the iron core. It is affected by remanence. As a result, the excitation current waveform is distorted, iron loss occurs due to iron loss current, and improvement in input / output conversion efficiency is impeded.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the problem that the currently proposed magneto coil apparatus is affected by residual magnetism as described above.
It is an object of the present invention to provide a stationary type generator coil device capable of greatly improving input / output conversion efficiency.

[0006]

SUMMARY OF THE INVENTION A magneto coil device according to the present invention comprises a transformer iron core having an annular magnetic path substantially in the shape of a letter on a plane, and a pair of transformer iron cores facing each other along the inner legs of the transformer iron core. A first primary coil and a second primary coil wound corresponding to the first outer leg portion and the second outer leg portion, respectively, and a secondary coil wound around the inner leg portion, A first external magnet having a pair of N and S poles arranged outside the transformer iron core and abutting on both ends in the longitudinal direction of the first outer leg or in the vicinity thereof; A pair of N pole and S arranged outside the transformer core and contacting both ends in the lengthwise direction of the second outer leg or the vicinity thereof.
A second external magnet having a pole, the polarity of which is set to be opposite to the polarity of the first N pole and the S pole.

[0007]

When the generator coil device of the present invention is used, the input current is alternately supplied to the first primary coil and the second primary coil, and the first primary coil is the N pole of the first external magnet. From the second magnetic pole to the S pole through the shortest magnetic path, the input current is supplied in a direction in which a magnetic flux in the direction opposite to the direction of the magnetic flux is generated in the outer leg portion, and the second primary coil is connected to the N of the second external magnet. It is assumed that the input current is supplied in a direction in which a magnetic flux in a direction opposite to the direction of the magnetic flux traveling from the pole to the S pole via the shortest magnetic path is generated in the outer leg portion. When the input current is applied only to the first primary coil, the first magnetic flux generated by the first primary coil passes so as to circulate from the inside of the first outer leg portion to the inside of the inner leg portion. In this case, the first outer leg is substantially in a magnetic saturation state, and the magnetic resistance in the first outer leg becomes high as viewed from the first outer magnet, so that the N of the first outer magnet is increased.
Almost all of the magnetic flux from the pole to the S pole bypasses the inside of the inner leg. At this time, since the second primary coil does not generate a magnetic flux, the magnetic resistance in the second outer leg is low when viewed from the second external magnet, so that the magnetic flux from the N pole to the S pole of the second external magnet decreases. Almost all go from the north pole to the south pole through the shortest magnetic path through the second outer leg. On the contrary,
When the input current is applied only to the second primary coil, the second
The second magnetic flux generated by the primary coil passes from the inside of the second outer leg to the inside of the leg. In this case, the second outer leg is almost in a magnetic saturation state, and the magnetic resistance in the second outer leg becomes high as viewed from the second outer magnet, so that the N pole of the first outer magnet changes to the S pole. Almost all of the oncoming magnetic flux detours within the inner leg. At this time, since the first primary coil does not generate a magnetic flux, the magnetic resistance in the first outer leg is low when viewed from the first external magnet, so that the magnetic flux from the N pole to the S pole of the first external magnet decreases. Almost all go from the north pole to the south pole through the shortest magnetic path through the first outer leg.

Therefore, the direction of the first magnetic flux intersecting the secondary coil as the input current flows through the first primary coil and the secondary coil as the input current flows through the second primary coil. The direction of the second crossing magnetic flux is opposite to that of the second magnetic flux, and the magnetic flux crossing the secondary coil is substantially increased by the magnetic flux of the first external magnet or the magnetic flux of the second external magnet. The electromotive force according to the change in the magnetic flux is induced in the secondary coil, and an AC output is obtained. This allows
The amount of change in the magnetic flux that intersects the secondary coil is about twice as large as the amount of change in the magnetic flux that intersects the secondary coil when an input current intermittently flows through one primary coil.
It is possible to boost the voltage without increasing N2 / N1.

Further, as the first primary coil and the second primary coil are driven alternately as described above, the first magnetic flux and the second magnetic flux passing through the inside leg portion are in opposite directions. become. In addition, when the first primary coil is driven, the first
When passing the first magnetic flux and the second primary coil passing through the outer leg portion of the first outer magnet, the first magnetic flux passes through the first outer leg portion from the N pole to the S pole via the shortest magnetic path. It is opposite to the magnetic flux. Similarly, the second magnetic flux passing through the second outer leg portion when the second primary coil is driven and the shortest magnetic path from the N pole to the S pole of the second external magnet when the first primary coil is driven. Then, the magnetic flux passing in the second outer leg portion is in the opposite direction. As a result, the effect of residual magnetism due to the hysteresis phenomenon of the transformer iron core is almost eliminated, distortion of the excitation current waveform is reduced, iron loss due to iron loss current is suppressed, and input / output conversion efficiency is improved. Will be possible. That is, it is possible to greatly improve the input / output conversion efficiency by using the operation principle of the static electricity generating coil device according to the invention of the present inventor that is currently proposed.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a configuration of a magneto coil device according to an embodiment of the present invention, and a transformer portion is taken out and shown in FIG. This generator coil device is composed of a transformer 10, a first external magnet 1 and a second external magnet 2.

The transformer 10 includes a transformer iron core 11 having an annular magnetic path having a substantially V-shaped plane, and a pair of first outer sides facing each other along an inner leg portion 110 of the transformer iron core 11. Legs 111
And a second primary coil 22 wound corresponding to the second outer leg 112, and a secondary coil 23 wound around the inner leg 110.

The transformer iron core 11 has an inner leg portion 110, a first
It is desirable to form and combine the outer leg portion 111 and the second outer leg portion 112 of the same. Further, assuming that the first outer leg portion 111 and the second outer leg portion 112 are made of the same material as the other portions, the cross-sectional areas of the first outer leg portion 111 and the second outer leg portion 112 are The first outer leg part
It is desirable that the cross-sectional areas of the leg portion extending from 111 to the inner leg portion 110, the leg portion connecting from the second outer leg portion 112 to the inner leg portion 110, and the inner leg portion 110 are formed smaller.

The first external magnet 1 is the transformer iron core.
It has a pair of N and S poles which are disposed outside 11 and abut on both ends (or in the vicinity thereof) of the first outer leg portion 111 in the longitudinal direction. The second external magnet 2 is also disposed outside the transformer iron core 11 and is a pair of N poles that come into contact with both ends (or the vicinity thereof) of the second outer leg portion 112 in the longitudinal direction. And S pole, and the direction of the polarity is set to be opposite to the direction of the N pole and S pole of the first external magnet 1 described above.

In this example, the external magnets 1 and 2 are, for example, substantially horseshoe-shaped permanent magnets from the viewpoint of easy handling. In this case, the first permanent magnet 1
The facing distance between the N pole and the S pole and the facing distance between the N pole and the S pole of the second permanent magnet 2 are the same as those of the first outer leg portion 111 and the second outer leg portion 112 of the transformer iron core 11, respectively. It is equal to the length L. The transformer iron core 11 has a structure in which, for example, thin silicon steel plates are stacked, and a stratified structure in which a plurality of silicon steel plates having an appropriate shape are combined and stacked in consideration of ease of assembly, structural strength, and the like. Is adopted.

In this example, as shown in FIGS. 3 (a) and 3 (b), a pair of planar U-shaped silicon steel plates 31 and 32 sandwich a single planar I-shaped silicon steel plate 33 on the same plane. With a layer
Plane H with a pair of U-shaped silicon steel plates 34 and 35
As shown in FIG. 3C, a layered structure is employed in which layers of one silicon steel plate 36 of the shape sandwiched on the same plane are alternately stacked.

FIGS. 4A and 4B show another example of the assembling structure of the transformer iron core 11 in FIG. This transformer iron core is composed of a pair of U-shaped silicon steel plates 41 and 42, each of which has a plane U-shaped silicon steel plate 43 sandwiching the opening side and the back side on the same plane. FIG. 4C shows a layer in which a plane U-shaped silicon steel plate 46 is sandwiched between a pair of U-shaped silicon steel plates 44 and 45 on the same plane in the opposite direction to the above.
As shown in Fig. 3, a layered structure that is stacked alternately is used.

Next, regarding the operating principle of the power generating coil device of the above embodiment, the power generating coil device is operated by, for example, DC /
The case of use as an AC inverter will be described as an example with reference to FIGS. 5 and 6.

In the generator coil device of the above embodiment, the direction of the first magnetic flux φ1 generated in the first outer leg portion 111 can be freely set depending on the winding method of the first primary coil 21 and the direction of flowing the exciting current. And similarly, the second primary coil 22
The direction of the second magnetic flux φ2 generated in the second outer leg portion 112 can be freely set depending on the winding method and the direction of flowing the exciting current. In using the second magnetic flux φ2, for example, a pulse voltage or a half-wave rectified voltage is used. The first primary coil 21 and the second primary coil 22 are alternately supplied. In this example, as shown in FIG.
The primary switching coil 21 and the second primary coil 22 are alternately connected to each other by the changeover switch circuit 5, for example, 1 /
First primary coil by switching every 120 seconds
A pulse voltage is alternately applied to 21 and the second primary coil 22.

In this case, in the first cycle in which the input voltage is supplied to the first primary coil 21, the first magnetic flux φ1 generated in the first outer leg portion 111 by the first primary coil 21.
Of the first primary coil 21 so as to be in a direction opposite to the direction of the magnetic flux Φ1 going from the N pole of the first external magnet 1 to the S pole via the shortest magnetic path (linearly in this example). Set the direction of the input current. In the second cycle in which the input voltage is supplied to the second primary coil 22, the second magnetic flux φ2 generated in the second outer leg portion 112 by the second primary coil 22 is
The input current of the second primary coil 22 is set so as to be opposite to the direction of the magnetic flux Φ2 traveling (linearly in this example) from the N pole of the second external magnet 2 to the S pole via the shortest magnetic path. Set the orientation of.

That is, as shown in FIG. 5, for example, the first
When a pulse voltage is applied only to the primary coil 21 and an input current flows, the first primary coil 21 generates the first
Almost all of the magnetic flux φ1 of (1) passes so as to circulate from the first outer leg portion 111 to the inner leg portion 110 (the leakage flux is ignored). In this case, the first outer leg 11
1 is almost in a magnetic saturation state, and the magnetic resistance in the first outer leg portion 111 when viewed from the first outer magnet 1 is high, so that the magnetic flux Φ1 from the N pole to the S pole of the first outer magnet 1 is Almost all detour inside the inner leg 110.

The leg through which a large amount of the combined magnetic flux φ1 and Φ1 passes is defined by the magnetic flux (φ1 + Φ).
It is desirable to form the cross-sectional area larger than the cross-sectional area of the first outer leg portion 111 so as not to saturate in a range smaller than 1).

Further, at this time, since the second primary coil 22 does not generate magnetic flux, the magnetic resistance in the second outer leg portion 112 when viewed from the second outer magnet 2 becomes low, so that the second outer magnet is reduced. The magnetic flux Φ2 traveling from the N pole to the S pole of 2 almost linearly passes through the inside of the second outer leg portion 112.

On the other hand, as shown in FIG. 6, when a pulse voltage is applied only to the second primary coil 22 to cause an input current to flow, the second magnetic flux φ2 generated by the second primary coil 22 is generated. Almost all pass through in the inner leg 110 from the second outer leg 112 (the leakage flux is ignored). In this case, the second outer leg 112
Is almost in a magnetic saturation state, and the magnetic resistance in the second outer leg portion 112 when viewed from the second external magnet 2 becomes high.
The magnetic flux Φ2 traveling from the N pole to the S pole of the external magnet 2 is detoured inside the inner leg 110.

Here, the leg through which a large amount of the combined magnetic flux φ2 and Φ2 passes is the magnetic flux (φ2 + Φ).
It is desirable that the cross-sectional area of the second outer leg 112 is formed larger than that of the second outer leg 112 so as not to be saturated in a range smaller than 2).

Further, at this time, since the first primary coil 21 does not generate magnetic flux, the magnetic resistance in the first outer leg portion 111 when viewed from the first outer magnet 1 becomes low, so that the first outer magnet 1 1 Almost all of the magnetic flux Φ1 traveling from the N pole to the S pole of 1 goes straight through the inside of the first outer leg portion 111.

Therefore, as the input current flows through the first primary coil 21, the direction of the first magnetic flux φ1 that intersects the secondary coil 23 and the input current flows through the second primary coil 22. Second magnetic flux φ2 that intersects the secondary coil 23
Of the magnetic flux Φ1 of the first external magnet 1 or the second magnetic flux of the second external coil 1
The magnetic flux Φ2 of the external magnet 2 is substantially increased, and electromotive force corresponding to these magnetic flux changes is induced in the secondary coil 23,
AC output is obtained. In this case, the amount of change in the magnetic flux intersecting with the secondary coil 23 is twice the amount of change in the magnetic flux φ1 or φ2 intersecting with the secondary coil 23 when the input current flows intermittently in one primary coil 21 or 22. Grows to a degree.

Also, as described above, the first primary coil 21
The first magnetic flux φ1 passing through the inside leg 110 and the second magnetic flux
Is opposite to the magnetic flux φ2 of. Also, the first primary coil
When driving 21 the first magnetic flux φ1 passing through the first outer leg 111 and the second primary coil 22 are driven linearly from the N pole of the first external magnet 1 to the S pole. Inside the outer leg of
It is opposite to the magnetic flux Φ1 passing through 111. Similarly, when the second primary coil 22 is driven, the second magnetic flux φ2 that passes through the inside of the second outer leg portion 112 and when the first primary coil 21 is driven, the N pole to the S pole of the second external magnet 2 are driven. The magnetic flux Φ2 passing through the inside of the second outer leg portion 112 goes straight in the opposite direction.

As a result, while utilizing the operating principle of the static generator coil device according to the invention of the present inventor that has been proposed at present, the influence of residual magnetism due to the hysteresis phenomenon of the transformer iron core 11 is almost eliminated. It becomes possible to reduce the distortion of the excitation current waveform, suppress the iron loss due to the iron loss current, and improve the input / output conversion efficiency.

In the above operation, the inner leg 110,
The first outer leg portion 111 and the second outer leg portion 112 are formed of separate members, and the edges of the iron core on the primary coil side and the iron core on the secondary coil side are materially cut off. As a result, the amount of the magnetic flux Φ1 of the first outer magnet 1 toward the second outer leg portion 112 decreases, and the amount of the magnetic flux Φ2 of the second outer magnet 2 toward the first outer leg portion 111 decreases. As a result, the magnetic flux Φ
1 and Φ2 can be effectively utilized, which can contribute to improvement of conversion efficiency.

Next, the degree of improvement in the input / output conversion efficiency of the magneto coil apparatus of the above embodiment will be specifically described. FIG.
An example of a measurement system when measuring the input / output conversion efficiency is shown. In this measurement system, a commercial AC power source, for example, 60 Hz, 100 V is obtained by half-wave rectification using an AC adapter 72 and two rectifiers 73, 74 with the load resistance 71 connected to the secondary coil 23. The applied voltage was alternately applied to the first primary coil 21 and the second primary coil 22. In this measurement, when the value of the load resistance 71 is changed by several points, the input current and the input voltage of the first primary coil 21 are measured by the ammeter 75 and the voltmeter 76, respectively, and as a result, the secondary coil 23 As a result of measuring the output current and the output voltage with the ammeter 77 and the voltmeter 78, the calculation results of the input power, the output power, and the input / output conversion efficiency are shown in a list in FIG.

For comparison, measurement results and calculation results are also shown in the case where the external magnets (first external magnet 1 and second external magnet 2) are removed. FIG. 9 is a characteristic diagram showing measurement results of load resistance vs. input current in FIG.
FIG. 10 is a characteristic diagram showing measurement results of load resistance vs. output voltage in FIG. FIG. 11 is a characteristic diagram showing measurement results of load resistance vs. output current in FIG. FIG. 12 is a characteristic diagram showing the calculation result of the input power versus the output power in FIG. 13 (a) and 13 (b) show the input waveform,
An example of the result observed with an oscilloscope to confirm the output waveform is shown.

From the above results, it is understood that, according to the magneto coil apparatus of the present embodiment, the input / output conversion efficiency is substantially improved by more than 250% as compared with the case where the external magnet is not used. Further, according to the structure of the magneto coil device of the above-described embodiment, three parallel leg portions (iron cores) 111, 110, 11 are provided.
The coils 21, 22 and 23 are separately wound around 2, and the horseshoe-shaped permanent magnets 1 and 2 are in contact with the outer two legs so as to face each other, so that the overall size is compact. .

The external magnets 1 and 2 in the above embodiment are
In addition to permanent magnets, various magnets such as superconducting electromagnets can be used. Further, the shape of the transformer iron core 11 in the above-mentioned embodiment does not need to be strictly a date-shaped plane, and a case where a part of the date-shape is curved or a part of the date-shape is projected. The shape of the transformer iron core in the present invention is not limited as long as each of the two annular magnetic paths is continuous.

Further, in the above embodiment, the first outer leg portion 11
An example in which the first primary coil 21 and the second primary coil 22 are respectively wound around substantially the entire regions of the first and second outer leg portions 112 has been shown, but the present invention is not limited to this, and as shown in FIG. , The first outer magnet 111 and the second outer magnet 2 corresponding to when the input currents are alternately supplied to the partial areas of the first outer leg 111 and the second outer leg 112, respectively. You may change so that it may wind only the amount required to interrupt | block a magnetic flux.

In each of the above embodiments, a pair of opposing sides along the inner leg is used as the first outer leg and the second outer leg of the transformer iron core. Without being limited to this, even when a part of each outer leg portion on both sides of the inner leg portion of the transformer iron core is used as the first outer leg portion and the second outer leg portion, And a pair of N poles and S of the first external magnet near both ends of the primary coil.
The poles are brought into contact with each other, and the pair of N poles and S of the second external magnet are provided in the vicinity of both ends of the second primary coil in the second outer leg portion.
If the poles are brought into contact with each other, the same operation principle as that of the above-described embodiment can provide substantially the same effect as that of the above-mentioned embodiment.
However, in this case, when an input current is supplied to the first primary coil, a magnetic flux in a direction opposite to the direction of the magnetic flux traveling from the N pole of the first external magnet to the S pole via the shortest path is applied to the first outside. When the second primary coil is supplied with an input current and is generated in the leg portion, the second magnetic flux having a direction opposite to the direction of the magnetic flux traveling from the N pole of the second external magnet to the S pole via the shortest magnetic path is generated. Of the magnetic flux generated in the outer leg portion of the first primary coil passing through the inner leg portion and the magnetic flux generated by the second primary coil passing through the inner leg portion are opposite to each other. It is necessary to arrange the first primary coil and the second primary coil.

[0036]

As described above, according to the magneto coil device of the present invention, the input / output conversion efficiency can be greatly improved.
It can be used in all fields such as household and industrial.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing a magneto coil device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a transformer part in FIG.

3A and 3B are a plan view and a side view showing an example of an assembled structure of the transformer iron core in FIG.

4A and 4B are a plan view and a side view showing another example of the assembly structure of the transformer iron core in FIG.

5 is a first diagram showing a first state of the magneto coil device of FIG. 1 in an operating state;
The figure shown in order to demonstrate the flow of the magnetic flux in the cycle.

FIG. 6 is a second view of the magneto coil device of FIG. 1 in an operating state.
The figure shown in order to demonstrate the flow of the magnetic flux in the cycle.

FIG. 7 is a circuit diagram showing an example of a measurement system when measuring input / output conversion efficiency of the magneto coil apparatus of FIG.

8 is a diagram showing a list of examples of measurement results and calculation results obtained by the measurement system of FIG.

9 is a characteristic diagram showing measurement results of load resistance vs. input current in FIG.

10 is a characteristic diagram showing measurement results of load resistance vs. input voltage in FIG.

FIG. 11 is a characteristic diagram showing measurement results of load resistance vs. output current in FIG.

FIG. 12 is a characteristic diagram showing calculation results of input power vs. output power in FIG.

13 is a waveform chart showing an example of input waveforms and output waveforms observed during measurement by the measurement system of FIG. 7.

FIG. 14 is a plan view showing a modified example of the magneto coil apparatus of FIG.

[Explanation of symbols]

1 1st outer magnet 2 2nd outer magnet 10 Transformer 11 Transformer iron core 110 Inner leg part 111 First outer leg part 112 Second outer leg part 21 First primary coil 22 Second primary coil 23 Secondary coil

Claims (3)

[Claims] 1. A transformer iron core having an annular magnetic path substantially in the shape of a letter in plan view, and a pair of first iron cores facing each other along inner legs of the transformer iron core.
A first primary coil and a second primary coil wound corresponding to the outer leg portion and the second outer leg portion, respectively, a secondary coil wound around the inner leg portion, and the transformer A first external magnet having a pair of N and S poles arranged outside the iron core and in contact with both ends in the longitudinal direction of the first outer leg or in the vicinity thereof, and the transformer iron The first external magnet is provided outside the core and has a pair of N and S poles that are in contact with both ends in the lengthwise direction of the second outer leg or in the vicinity thereof, and the direction of the polarity is the first external magnet. And a second external magnet set to have a direction opposite to the polar directions of the N pole and the S pole. 2. The first primary coil and the second primary coil are alternately supplied with an input current, and the first primary coil has a shortest path from an N pole to an S pole of the first external magnet. An input current is supplied in a direction to generate a magnetic flux in the first outer leg portion in a direction opposite to the direction of the magnetic flux traveling via
A direction in which the second primary coil generates a magnetic flux in the second outer leg portion in a direction opposite to the direction of the magnetic flux traveling from the N pole of the second external magnet to the S pole via the shortest magnetic path. The generator coil device according to claim 1, wherein an input current is supplied to the generator coil device. 3. The transformer iron core, wherein the first outer leg portion and the second outer leg portion have a cross-sectional area continuous from the first outer leg portion to the inner leg portion, and the first outer leg portion and the inner leg portion. The power generating coil device according to claim 1 or 2, wherein a cross-sectional area of the leg portion connected to the inner leg portion from the second outer leg portion and the cross-sectional area of the inner leg portion is smaller than that of the second leg portion.