JPS59155910A - Reactor - Google Patents

Abstract

PURPOSE:To contrive miniaturization of a reactor by leading out terminals from plural windings respectively and selecting each of those plural terminals or enabling to connect them mutually, thereby obtaining various kinds of inductance by one reactor and facilitating change of the capacitance to be required. CONSTITUTION:An inside winding 1 and an outside winding 2 are arranged concentrically in a magnetic shield 6 of an air-core reactor provided with a magnetic shield and terminals 3-5 are drawn out from upper and lower ends of said inside and outside windings 1 and 2 respectively. These terminals 3-5 are selected respectively or connected directly one another. Furthermore, plural conductors composing the inside and the outside windings 1 and 2 have different sectional areas respectively and the current densities of them to the maximum current flowing in the windings 1 and 2 are nearly equal. This method is applied to an iron-core reactor provided with a gap and various kinds of inductance are obtained by one reactor thereby meeting the change of the capacitance to be required easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an air-core type or iron-core type glue axle, and particularly to its winding configuration.

[Prior art]

In air-core reactors, geared iron-core reactors, and the like, one winding is normally used as the winding. Also known are multilayer windings consisting of an inner winding and an outer winding arranged concentrically and connected to each other in series.

By the way, in such a reactor, if the required capacity is determined at a constant circuit voltage, the inductance will also be determined, so a reactor with this inductance will be manufactured and installed.

Therefore, if the required capacity increases after installation, a new glue axle is manufactured and placed in parallel, and used by connecting in parallel or series with the existing glue axle. In addition, if the required capacity decreases, we can also create a new glue handle.
It is necessary to install it.

However, considering the recent shortage of land for substations and changes in plans for installing power plants, it is necessary to secure land in advance for the additional installation of other reactors as described above, and to manufacture and install reactors. There is a problem in that doing so increases the burden of initial investment. On the other hand, each time the required capacity changes, we create a new capacity that matches the required capacity.
It is extremely uneconomical to install one.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to overcome the drawbacks of the prior art described above, to provide a reactor that can accommodate necessary changes in capacity, requires less installation space, and can be manufactured at low cost.

[Summary of the invention]

To achieve this object, the present invention comprises a plurality of windings arranged concentrically or in an acdle, terminals are drawn out from each of the plurality of windings, and these windings are selected separately or connected in series. 1.
Each 7'1H according to the capacity M- required for the platform accelerator
It is characterized by the fact that the inductance is more than that obtained.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

FIGS. 1 and 2 are a plan view and a cross-sectional view of a single phase portion showing an embodiment in which the present invention is applied to a magnetic/ruby air-core reactor.

The inner winding 1 and the outer winding 2 are arranged concentrically and connected in series. Ma. In addition, terminals 3 and 4 are pulled out from the upper and lower ends of the inner winding 1, and a terminal 5 is pulled out from the lower end of the outer winding 2, that is, the end opposite to the connection end (upper end) with the inner winding 1. A magnetic shield 6 is provided around the inner winding 1 and the outer winding 2.

The inductance L of the reactor is expressed as follows: N: number of turns of the winding S: effective cross-sectional area of magnetic flux t: 8W for the gap. Therefore, in order to obtain multiple types of inductance, N in equation (1), 8. It is sufficient to allow a plurality of combinations of t.

That is, in the glue handle having the above-mentioned configuration, the terminal 3
, 4, the first inductance L
1, where N1: 10 turns of the winding Sl 2 The cross-sectional area of the average diameter D+ of the winding 1 is obtained.

Furthermore, in order to obtain a second inductance L2 larger than this inductance L1, terminal 3.5 may be selected. In this way, 12 L2''('N+ 10N2) 2x□ ・・・・・・
...(3) However, N2: 20 turns of the winding S12: The cross-sectional area of the average diameter DI2 of the combined winding 1 and winding 2, and an inductance L2 larger than the inductance LI is obtained.

Furthermore, by selecting terminals 4 and 5, a third inductance L3, which is different from the inductances Ll and Li, expressed by the following equation (4) can be obtained.

2 L3”Ni×−・・・・・・・・・・・・(4) However, N2
: Cross-sectional area of average diameter D2 of winding 2 In this way, each terminal 3,
4.5, it is possible to easily obtain three types of inductances Ll, L2, and Ls with one ladle. Therefore, the installation area can be reduced and manufacturing can be done at low cost.

In the above embodiment, two windings are arranged concentrically, but the number is not limited to two, and even three or more windings can be similarly arranged by drawing out terminals from each winding and selecting them appropriately. Many types of inductance can be obtained.

Further, in the above embodiment, explanation was given only for a single phase, but in the case of a multiphase, if each phase is configured as described above,
Similar effects can be obtained.

FIGS. 3 and 4 are a plan view and a cross-sectional view of a single phase portion showing an embodiment in which the present invention is applied to a geared iron core reactor. In these figures, the same symbols as in Figures 1 and 2 are the same.
7 is a yoke, 8 is a block core, and 9 is a gap.

In the case of this geared iron-core reactor, the effective cross-sectional area S in equation (1) above is determined mostly by the cross-sectional area of the block core 8 and is approximately constant, so it is only a change in the number of turns N of the winding. Multiple types of inductance will be obtained.

This holds true even when three or more windings are arranged concentrically. However, the gap distance in equation (1) is equal to the length ΔtI of each gap 9 multiplied by the number of gaps.

Further, FIG. 5 is a sectional view for a single phase showing another embodiment in which the present invention is applied to a magnetically shielded air-core reactor similar to the embodiments shown in FIGS. 1 and 2.

In this embodiment, the winding directions of the inner winding 1 and the outer winding 20 are reversed, and the terminal 5, which was at the bottom in FIG. 2, is positioned at the top. In this case as well, as is clear from the figure, the hypopsychiatry is exactly the same as in the case of Figure 2.

In each of the above embodiments, if the applied voltage is kept constant, if terminals 3 and 4 are selected where the inductance is the smallest, the current 1 flows only through the winding 1 and becomes the maximum. Further, when terminals 3 and 5 are selected, which have the largest inductance, the current 2 flows through the series connection of the windings 1 and 2, and becomes the minimum. Therefore, even if the winding 2 is made of the same conductor as the winding 1 whose cross-sectional area S of the conductor is made large enough to correspond to the maximum current 11, the minimum current I2L is applied to the winding 2. Since there is no flow, it becomes uneconomical and uncoordinated than necessary. Therefore, it is economically desirable to set the cross-sectional area Sb of the conductor of the winding 2 to a value as close as possible to the value obtained by .

〔Effect of the invention〕

As explained above, according to the present invention, various inductances depending on the required capacity can be obtained with a single inductor, so it is possible to easily respond to changes in the required capacity, and the installation area is small. It is economical because it can be manufactured at low cost.

[Brief explanation of drawings]

1 and 2 are a plan view and a sectional view of a reactor according to an embodiment of the present invention, and FIGS. 3 and 4 are a plan view and a sectional view of a reactor according to an embodiment of a pond of the present invention. FIG. 5 is a sectional view of a reactor according to still another embodiment of the present invention. Plan 1 Figure 2 Figure 3 Figure 1 Figure 1

Claims (1)

[Claims] 1. In an accelerator equipped with a plurality of windings arranged concentrically, terminals are drawn out from each of the plurality of windings, and the plurality of windings are individually selected or The acdle is characterized by being configured so that it can be connected in series to. 2. Claim 1 provides that the cross-sectional area of each conductor constituting the plurality of windings is made to be different from each other, so that the current density with respect to the maximum current flowing through each winding is approximately equal. Features: Riakdol.