JP2520057B2 - Transformer equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer device,
In particular, the present invention relates to a new type transformer device that can be downsized.

[0002]

BACKGROUND ART A transformer is generally used when transforming an AC voltage from high voltage to low voltage or from low voltage to high voltage.
Or, it has been widely used in various fields from the past as an electric device used for the purpose of insulating a primary and a secondary from a direct current. Such a transformer has been improved in various ways with the progress and development of magnetic materials and insulating materials. And
The improvement of this type of transformer in the prior art is mainly aimed at so-called characteristic improvement that reduces loss.

On the other hand, in recent years, along with the miniaturization of electronic devices such as computers, demands for miniaturization of transformers have been made severely from various fields.
In particular, due to advances in integrated circuit technology, the electronic circuit portion that handles electrical signals has been extremely miniaturized, but the power supply unit that supplies power to the electronic circuit is a transformer, a choke coil, or the like. The miniaturization is behind. For example, in a digital computer that handles a large-scale signal, about half of its total volume is a power supply unit.

As one method for reducing the size of the power supply unit,
Conventionally, a higher operating frequency has been mentioned. Along with this increase in operating frequency, recently, for example, a flat plate transformer using a laminated micro magnetic core has been proposed, and its practical use is being promoted. At the same time, on the other hand, research and development of transformers using amorphous magnetic materials with excellent high-frequency characteristics are also underway in various fields.

[0005]

However, in the above-mentioned conventional example, the idea of increasing the operating frequency theoretically leads to miniaturization of the transformer, but in realizing it, the main magnetic path of the magnetic flux is Due to the high frequency characteristics of the magnetic material formed, the upper limit of the operating frequency is limited, resulting in an increase in loss. In order to improve such inconvenience, for example, even if ferrite, which is a magnetic material having relatively good high-frequency characteristics, is used, in the operation in the MH _Z band or higher
The magnetic permeability is reduced, the conversion efficiency is significantly reduced, and the eddy current and the hysteresis loss of the material are increased, and the advantage of using the magnetic material is impaired.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a new type transformer device, which is capable of improving the disadvantages of the conventional example, particularly having a relatively good voltage conversion efficiency and being capable of being downsized. .

[0007]

According to the present invention, a transformer main body is formed by twisting a wire for a primary coil and a wire for a secondary coil in a rope shape while maintaining an insulated state from each other. In this structure, input terminals are provided at both ends of the primary coil wire, and output terminals are provided at both ends of the secondary coil wire. This aims to achieve the above-mentioned object.

[0008]

When an AC power source having a predetermined frequency is applied to the input terminals P ₁ and P ₂ ′, a current i ₁ flows through the primary coil wire 1 in the transformer body 3 as shown in FIGS. 2 and 3.
An alternating magnetic field H of the magnetic flux Φ is formed around it. On the other hand, the secondary induction voltage e ₂ corresponding to the magnitude of the magnetic flux Φ is generated in the secondary coil wire 2 arranged along the primary coil wire 1 according to Faraday's law. In this case, since the wire rod 1 for the primary coil and the wire rod 2 for the secondary coil are twisted in a rope shape, engagement by the magnetic flux between the wire rod 1 for the primary coil and the wire rod 2 for the secondary coil is enhanced, Therefore, the value of the secondary induced voltage e ₂ is relatively high. Output terminals S ₁ ′, S _{2 of the} secondary coil wire rod ₂
When a suitable load is connected to the secondary coil wire 2, a current i ₂ corresponding to the size of the load and its property flows in the secondary coil wire 2. In the experiment, in the ideal transformer without loss, the turns ratio is "1.
Assuming that the transformation ratio constant K _O for “1” is 100 [%],
K _O = 80 [%] in the high-frequency region could be obtained results seen with sufficient possibilities of practical application of the front and rear.

[0009]

[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1 and 2, reference numeral 1 indicates a primary coil wire, and reference numeral 2 indicates a secondary coil wire. The primary coil wire 1 and the secondary coil wire 2 have the same length and are twisted (twisted) in a rope shape as shown in FIG. That is, in the present embodiment, the primary coil wire rod 1 and the secondary coil wire rod 2 having the same length are twisted in a rope shape while maintaining an insulating state with each other, thereby forming a transformer. A body 3 is formed. Input terminals P ₁ and P ₂ are provided at both ends of the primary coil wire 1 in the transformer body 3. Further, output terminals S ₁ and S ₂ are provided at both ends of the secondary coil wire 2.

Input terminals P ₁ and P ₂ and output terminals S ₁ and S ₂
Is provided with an input terminal P ₁ and an output terminal S ₁ as outward terminals at one end (the left end in FIG. 1) of the transformer body 3,
An input terminal P ₁ and an output terminal S ₁ are provided at the other end of the transformer body 3 (the right end in FIG. 1) as a return terminal. The return path P ₂ on the primary side is connected to the relay cable 4
Through one end of the transformer body 3 (the left end of FIG. 1)
As P ₂ ′. In addition, the outgoing path terminal S ₁ on the secondary side is disposed as S ₁ ′ at the other end (the right end in FIG. 1) of the transformer body 3 via the relay cable 5. As a result, the input terminals P ₁ and P ₂ ′ are provided at _one end (the left end in FIG. 1) of the transformer body 3, and the output terminal S ₁ is provided at the other end (the right end in FIG. 1) of the transformer body 3. ′, S
₂ is set respectively.

Next, the operation of the above embodiment will be described. When an AC power source having a predetermined frequency is applied to the input terminals P ₁ and P ₂ ′ of FIG. ₁ , a current i ₁ flows through the primary coil wire rod 1 in the transformer body 3 as shown in FIGS. 2 and 3. An alternating magnetic field H of the magnetic flux Φ is formed around it. On the other hand, the secondary induction voltage e ₂ corresponding to the magnitude of the magnetic flux Φ is generated in the secondary coil wire 2 arranged along the primary coil wire 1 according to Faraday's law. Therefore, the output terminals S ₁ ′ and S _{2 of the} secondary coil wire 2 are
By connecting an appropriate load to the secondary coil wire _2, a current i ₂ corresponding to the size of the load and its property is generated.
Will flow to

FIG. 4 shows an example of an experimental result for practical use of the transformer main body 3 portion in FIG. In this experiment, a pure resistance load of 10 [KΩ] was connected to the secondary side (output terminals S ₁ and S ₂ ) in the transformer body 3 shown in FIG. 5, and the primary voltage was applied to the input terminals P ₁ and P _2. v ₁ was applied, the frequency f was changed from 1 [K] to 1 [M], and the transformation ratio “(V ₂ / V ₁ ) × 100 [%]” was measured. In this case, the measurement was carried out at the same time when the secondary was opened and no load was applied, and the almost same result as in FIG. 4 could be obtained. As a result, among the twist coils shown in FIG. 5, a remarkable difference in frequency characteristic was obtained among the types A, B, and C. Further, it was obtained that the frequency characteristics were almost the same among the types A, B and C. At the same time, the transformation ratio constant K ₀ (where K ₀ is the transformation ratio constant determined by the diameter of the coil wire and the power supply frequency: the same below) may approach zero in the low frequency region, but in the high frequency region, K ₀ = 70-
It was possible to obtain a result of 80%, which is considered to be sufficient for practical use.

In the experimental results shown in FIG. 4, when the types A, B, and C of FIG. 5 in which a remarkable difference in frequency characteristic is obtained are analyzed, the frequency f increases as the coil diameter increases.
It has been revealed that the transformation ratio K ₀ with respect to the rising speed rises quickly.

As described above, in the first embodiment shown in FIGS. 1 to 3, when the coil diameter is small, the coupling between the primary and the secondary is obviously increased, and at the same time, the operating frequency is set high. It became clear that it could be put to practical use. If the coil diameter is set large,
It turned out to be operable from relatively low frequencies. Further, in this first embodiment, since the whole is formed in a rope shape, it can be handled in the same way as a normal power cable at the time of use, and the transformer in the main body of the electronic device can be omitted. Therefore, there is an advantage that the electronic device main body can be remarkably miniaturized by using this.

[0015]

[Second Embodiment] FIGS. 6 to 7 show a second embodiment. The second embodiment shown in FIGS. 6 to 7 shows a case where three primary coil wire rods 1 having the same length are used. Reference numerals 4 ₁ , 4 ₂ ,
4 ₃ shows a relay cable. Other configurations are the same as those of the first embodiment. Even in this case, in addition to the same effects as the first embodiment described above, the secondary voltage can be set to "K ₀ ⅓" times the primary voltage. On the other hand, if the number of the primary coil wire rods 1 is n, the secondary voltage can be set to "K ₀ .1 / n" times the primary voltage.

[0016]

[Third Embodiment] FIGS. 8 to 9 show a third embodiment. The third embodiment shown in FIGS. 8 to 9 shows a case where three secondary coil wire rods 2 having the same length are used, contrary to the above-described second embodiment. Reference numerals 5 ₁ , 5 ₂ and 5 ₃ represent relay cables. Other configurations are the same as those of the first embodiment. Even in this case, the same operational effect as that of the first embodiment described above is obtained, and the secondary voltage is changed to the primary voltage "3K ₀ ".
Can be set to double. On the other hand, if the number of secondary coil wires 2 is n, the secondary voltage is equal to the primary voltage “nK”.
It can be set to ₀ times.

[0017]

[Fourth Embodiment] FIG. 10 shows a fourth embodiment. This FIG.
In the fourth embodiment shown in Figure 3, three secondary coil wire rods 2 having different lengths are used. Reference numerals 6 ₁ , 6 ₂ and 6 ₃ represent relay cables. Other configurations are the same as those of the first embodiment. Even in this case, the same operational effect as that of the first embodiment described above is obtained, and the secondary voltage is multiplied by "(total length of wire rod for secondary coil / total length of wire rod for primary coil) · K ₀ " times the primary voltage. Can be set. Therefore, the secondary voltage can be set to an arbitrary value by arbitrarily setting the total length of the secondary coil wire rod.

[0018]

[Fifth Embodiment] FIG. 11 shows a fifth embodiment. This FIG.
In the fifth embodiment shown in FIG. 5, a plurality of output terminals S ₀₁ , S are provided at arbitrary locations on the secondary coil wire 2 in the transformer body 3.
_02, S ₀₃ , S ₀₄ , S ₀₅ are provided. Other configurations are the same as those of the first embodiment. Even in this case, in addition to the same effects as those of the first embodiment described above, there is an advantage that a secondary voltage of a predetermined level can be drawn from an arbitrary position on the transformer body 3 according to the purpose of use.

[0019]

[Sixth Embodiment] FIG. 12 shows a sixth embodiment. This FIG.
In the sixth embodiment shown in FIG. 6, a plurality of output terminals S ₀₁ , S _02, S ₀₃ , S ₀₄ having different output voltages are provided at one end of the secondary coil wire 2 in the transformer body 3. . Each of the output terminals S ₀₁ , S _02, S ₀₃ , and S ₀₄ has one terminal as a common reference terminal and the other terminal from an arbitrary position on the secondary coil wire rod 2. It has a feature in that it is pulled out. Reference numerals 6 ₁ , 6 ₂ , 6 ₃ , 6 ₄
Indicates a relay cable. Other configurations are the same as those of the first embodiment. Even in this case, in addition to the same effects as the first embodiment described above, there is an advantage that the secondary voltage having a different predetermined level can be drawn from one end of the transformer body 3 according to the purpose of use. is there.

[0020]

[Seventh Embodiment] FIG. 13 shows a seventh embodiment. This FIG.
In the seventh embodiment shown in Fig. 10, the secondary coil wire rod 2 in the transformer body 3 is composed of a plurality of wire rods having different lengths, and the output terminals S ₀₁ ,
It is characterized by having S _{02 and} S ₀₃ . These output terminals S ₀₁ , S _{02 and} S ₀₃ are all arranged at the other end of the transformer body 3 (right end in FIG. 13). Reference numerals 6 ₁ , 6 ₂ and 6 ₃ represent relay cables. The other structure is the same as that of the sixth embodiment described above. Even in this case, the same operational effect as that of the sixth embodiment described above can be obtained.

[0021]

[Eighth Embodiment] FIG. 14 shows an eighth embodiment. This FIG.
In the eighth embodiment shown in FIG. 5, the relay cable 5 of the secondary coil wire 2 in the first embodiment described above is formed of the same wire as the secondary coil wire 2 and is wound around the transformer body 3. It is characterized in that it is mounted toward the output terminals S ₁ ′ and S ₂ at the left end of FIG. Other configurations are the same as those of the first embodiment. Other configurations are the same as those of the first embodiment. Even in this case, in addition to the same effect as the first embodiment described above, there is an advantage that the output voltages of the output terminals S ₁ ′ and S ₂ can be effectively set high.

[0022]

[Ninth Embodiment] FIG. 15 shows a ninth embodiment. This FIG.
In the ninth embodiment shown in FIG. 1, the relay cable 5 of the secondary coil wire 2 in the first embodiment described above is formed of the same wire as the secondary coil wire 2 and is wound around the transformer body 3. The output terminals S ₁ ′ and S ₂ at the right end of FIG. Further, the relay cable 4 of the wire rod 1 for the primary coil in the first embodiment is formed of the same wire rod as the wire rod 1 for the primary coil, and while this is wound around the transformer body 3, the input terminal P at the left end portion in FIG. ₁ , P ₂ ′. Other configurations are the same as those of the first embodiment. Even in this case, in addition to the same effects as the first embodiment described above, the lengths of the primary coil wire rod 1 and the secondary coil wire rod 2 in the transformer body 3 are adjusted to adjust the output terminals S ₁ ′, There is an advantage that the output voltage of S ₂ can be set to an arbitrary value.

[0023]

[Tenth Embodiment] FIG. 16 shows a tenth embodiment. In the ninth embodiment shown in FIG. 16, the transformer body 3 in the first embodiment described above is formed in a relatively long rope shape, and
This transformer main body 3 is characterized in that the heavy transformer main body 33 is formed by further winding it in the form of a solenoid (coil spring). In the figure, Y indicates an alternating magnetic flux which is generated instantaneously. Other configurations are the same as those of the first embodiment. FIG. 17 shows the experimental result (curve A) in this case. For comparison, in the case of the first embodiment (curve a), and when sand iron is put in the inner space of the plurality of heavy transformer main bodies 33 formed under the same condition (curve b), or The results of the experiment are disclosed in the same table for the case where the iron core is inserted into the inner space (curve c) and the case where the silicon steel plate is inserted into the inner space (curve d). As a result, in any case, a relatively high transformation ratio constant can be obtained in the high frequency region, and in the low frequency region, a member having a large magnetic permeability can be provided in the magnetic path portion to be formed. A high transformation ratio constant of around 90% could be obtained.

Here, in each of the above-mentioned embodiments, a fine magnetic member may be filled in the periphery of the transformer main body 3 and the twisting gap. Alternatively, the transformer body 3 or the heavy transformer body 33 may be properly sealed and a magnetic fluid may be sealed inside. By doing so, there is an advantage that the voltage conversion efficiency can be further improved, and that the used frequency can be effectively lowered.

[0025]

As described above, according to the present invention, the transformer main body is formed by twisting the wire rod for the primary coil and the wire rod for the secondary coil in a rope shape (twist shape) while maintaining the insulating state. However, since the input terminals are provided at both ends of the wire for the primary coil and the output terminals are provided at both ends of the wire for the secondary coil in this transformer body, the main part of the voltage conversion is adopted. Is composed of a transformer body composed of a wire rod for primary coil and a wire rod for secondary coil, which makes it possible to significantly reduce the size of the transformer body, and also to wire the wire rod for primary coil and the wire rod for secondary coil. Since the structure is twisted in a rope shape (twist shape) while maintaining mutual insulation, it is possible to maintain good voltage conversion efficiency. By using the skin effect on the cross section of the coil, the internal inductance is reduced to enhance the coupling between the primary coil and the secondary coil, and as described above, it is formed in a rope shape as a whole. Therefore, it is possible to provide a transformer device excellent in the prior art in which the entire electronic device can be remarkably miniaturized by using it.

[Brief description of drawings]

FIG. 1 is a wiring diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory view showing a part of a transformer main body in FIG.

FIG. 3 is an explanatory diagram showing a part of the operation of the transformer body in FIG.

4 is a diagram showing an example of an experimental result of the transformer body in FIG.

FIG. 5 is a chart showing the types of transformer bodies used in the experiment of FIG.

FIG. 6 is a wiring diagram showing a second embodiment.

FIG. 7 is an explanatory view showing a part of the transformer main body in FIG.

FIG. 8 is a wiring diagram showing a third embodiment.

9 is an explanatory view showing a part of the transformer main body in FIG.

FIG. 10 is a wiring diagram showing a fourth embodiment.

FIG. 11 is a wiring diagram showing a fifth embodiment.

FIG. 12 is a wiring diagram showing a sixth embodiment.

FIG. 13 is a wiring diagram showing a seventh embodiment.

FIG. 14 is a wiring diagram showing an eighth embodiment.

FIG. 15 is a wiring diagram showing a ninth embodiment.

FIG. 16 is a wiring diagram showing a tenth embodiment.

17 is a diagram showing an example of an experimental result of the heavy transformer main body (per unit length) in FIG.

[Explanation of symbols]

1 wire rod for primary coil 2 wire rod for secondary coil 3 transformer body 4, 4 ₁ , 4 ₂ , 4 ₃ , 5, 5 ₁ , 5 ₂ , 5 ₃ , 6 ₁ ,
6 ₂ , 6 ₃ , 6 ₄ Relay cable 33 Double transformer body P ₁ , P ₂ , P ₂ ′ Input terminal S ₁ , S ₁ ′, S ₂ , S ₁₁ , S _12, S ₁₃ , S ₁₄ Output terminal P ₁ , S ₁ outgoing terminal P ₂ , S ₂ outgoing terminal

Claims (13)

(57) [Claims] 1. A transformer main body is formed by twisting a wire rod for a primary coil and a wire rod for a secondary coil in a rope shape while maintaining an insulating state to each other, and the wire rod for a primary coil in the transformer body is formed. A transformer device characterized in that input terminals are provided at both ends and output terminals are provided at both ends of the secondary coil wire. 2. The transformer device according to claim 1, wherein the primary coil wire and the secondary coil wire in the transformer main body are set to have the same length. 3. The primary coil wire rod in the transformer body is composed of a plurality of wire rods, and each of the primary coil wire rods is a relay cable such that the forward and backward current directions are the same. The transformer device according to claim 1, wherein the transformer device is connected via 4. The secondary coil wire rod in the transformer body is composed of a plurality of wire rods, and each of the secondary coil wire rods is configured so that the forward and backward current directions are the same. The transformer device according to claim 1, wherein the transformer device is connected via a relay cable. 5. The transformer device according to claim 4, wherein a plurality of secondary coil wire rods having the same length are used in the transformer main body portion. 6. The transformer device according to claim 4, wherein a plurality of secondary coil wire rods having different lengths are used in the transformer main body portion. 7. The secondary coil wire rod in the transformer main body is provided with an output terminal at an arbitrary position thereof, as defined in claim 1, 2, 3, 4, 5 or 6. Transformer equipment. 8. The secondary coil wire rod is provided with output terminals at a plurality of positions with reference to one terminal of the output terminals composed of the two terminals. , 3, 4, 5 or 6 transformer device. 9. The secondary coil wire rod in the transformer body is composed of a plurality of wire rods having different lengths, and independent output terminals are provided at both ends of each secondary coil wire rod. Claim 1, characterized in that
The transformer device according to 2, 3, 4, 5 or 6. 10. A transformer main body is formed by twisting a wire for a primary coil and a wire for a secondary coil in a rope shape while maintaining an insulating state therebetween, and a primary side is formed at one end of the transformer main body. A secondary side forward path terminal is provided, and a primary side and secondary side return path terminal is provided at the other end of the transformer body, and the primary side return path terminal is connected to one end of the transformer body via a relay cable. It is arranged on the part side,
A transformer device, wherein the outgoing terminal on the secondary side is arranged on the other end side of the transformer body via a relay cable. 11. A transformer main body is formed by twisting a wire rod for a primary coil and a wire rod for a secondary coil in a rope shape while maintaining an insulating state to each other, and a transformer main body is formed at one end of the transformer main body. Each forward path terminal on the secondary side is provided, and each return path terminal on the primary side and the secondary side is provided on the other end portion of the transformer body, and the outgoing path terminal on the secondary side is provided via the secondary side outgoing line material. A transformer device which is disposed on the other end side of the transformer main body, and a part or all of the secondary side outward route material is wound around the transformer main body. 12. A transformer main body is formed by twisting a wire for a primary coil and a wire for a secondary coil in a rope shape while maintaining an insulated state from each other, and a transformer is formed at one end of the transformer main body. Each forward path terminal on the secondary side is provided, and each return path terminal on the primary side and the secondary side is provided on the other end of the transformer body, and the return path terminal on the primary side is passed through the primary side return line material to the transformer body. While being disposed on one end side of the one side, a part or all of the primary side return route material is wound around the transformer body, and the secondary side forward route terminal is
A transformer characterized in that it is arranged on the other end side of the transformer main body through a secondary side outward route material, and part or all of the secondary side outward route material is wound around the transformer body. apparatus. 13. A relatively long rope-shaped transformer main body is formed by twisting the primary coil wire material and the secondary coil wire material in a rope shape while maintaining an insulated state from each other, and the transformer body is a solenoid. Forming a heavy transformer main body by winding it in the shape of a coil or a coil spring, and providing input terminals at both ends of the primary coil wire rod and output terminals at both ends of the secondary coil wire rod in the heavy transformer main body, respectively. A transformer device characterized in that