JPS60152012A - Transformer - Google Patents

Abstract

PURPOSE:To contrive to reduce weight, and to remove eddy current loss and heat evolution of a transformer by a method wherein an organic matter ferromagnetic material is used as the core of the transformer. CONSTITUTION:A core 3 wound with coils, 1, 2 generates an AC voltage corresponding to the turn ratio of the primary winding and the secondary winding to the secondary side coil 2 in conformity to the Maxwell equations according to AC input from the primary side. When electric conductivity of the core 3 is indicated by (delta), an eddy current can be expressed by deltaE, and when the organic matter ferromagnetic material constructing the core 3 thereof is an insulator, (delta) becomes as deltaapprox.=0, eddy current is not flowed, and loss and heat evolution are small. Moreover, when the closed core 3 is used, AC magnetic flux to the outside is also hardly generated. Moreover, when the orgnaic matter ferromagnetic material is used, formation of the core in one body is also facilitated.

Description

[Detailed description of the invention] Technical field The present invention relates to a transformer.

<Prior art> Conventional transformers use a ferromagnetic material such as iron as the core for the magnetic circuit, and as a result, the weight of the transformer is small.
It was necessary to consider loss and heat generation due to eddy current.

<Object of the Invention> The present invention was made in view of the above points, and aims to reduce the weight by using an organic ferromagnetic material as the core of the transformer.
Moreover, since it is an insulator, almost no eddy current flows, and there is no need to consider loss or heat generation.

<Example> An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is a primary coil to which an AC voltage of AClooV is applied, for example, and 2 is a secondary coil to which a predetermined output 'tri:pressure of +1y is output according to the winding ratio with the primary coil/l/1. It is a coil. A core 3 forms a magnetic circuit between the primary coil 1 and the secondary coil/Ly2, and is made of an organic ferromagnetic material. Examples of this organic ferromagnetic material include iron derivatives of pyridine ring condensation polymers.

Core 3 on which coil/v1, 2 is wound, - next side coil l
In response to the alternating current input from 1, an alternating current change in magnetic flux as shown in FIG. 2 occurs. At this time, since the core 3 forms a closed magnetic circuit, almost no magnetic flux leaks out. Then, the magnetic flux also changes in an alternating current manner in the part where the secondary coil /l/2 is wound.If 3 degrees, then according to MAXWELL's equation, the secondary coil /l/2 has primary and secondary coils. UE'=L pressure is generated depending on the winding ratio.

Considering the inside of core 3, 1. 1lD r o t 11 ” i + − (Ampere's law)
From t (II: magnetic field, i: current, D: electric flux density),
If the electrical conductivity of core 3 is σ, then! Multiply by −σE.

If this σE is an eddy current and the ferromagnetic material forming the core 3 is an insulator, then σ-0,
No thin current flows, so there is less loss and heat generation.

Further, if the closed core 3 is used as described above, there is almost no alternating current magnetic flux to the outside as an a-air circuit.

<Effects of the Invention> As described above, according to the present invention, a useful transformer that is efficient, lightweight, and generates little heat can be provided.

[Brief explanation of the drawing]

FIG. 1 is an IQin'ji diagram showing one embodiment of the present invention;
Fig. 2 shows the distribution of magnetic flux in the core.3, 1-order 1111 coil, 2...-secondary side coil, 3...core.

Claims (1)

[Claims] l A transformer characterized by using an organic ferromagnetic material for a magnetic circuit core.