JPWO2017126078A1 - Reactor - Google Patents

Abstract

The reactor has a first multiple cylindrical winding (110) in which n-layer (n ≧ 2) first cylindrical windings are concentrically arranged, and an n-layer (n ≧ 2) second cylindrical winding is concentric. And a second multi-cylindrical winding (120) positioned coaxially adjacent to the first multi-cylindrical winding (110). Each of the n-layer first cylindrical windings and each of the n-layer second cylindrical windings are connected to each other by wiring so as to correspond one-to-one. The first cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside in the n-th first cylindrical winding and the a-th layer (1 ≦ a ≦ n) from the inside in the n-th second cylindrical winding. The second cylindrical winding located in n) is connected to each other by wiring. A plurality of cylindrical winding connecting bodies each composed of a first cylindrical winding and a second cylindrical winding connected to each other are connected in parallel.

Description

  The present invention relates to a reactor.

  In the reactor constituted by a plurality of cylindrical windings connected in parallel, the length of the strands constituting each of the plurality of cylindrical windings, and the area inside each of the plurality of cylindrical windings, Due to being different from each other, a difference occurs in the impedance of each of the plurality of cylindrical windings. As a result, current does not flow uniformly through each of the plurality of cylindrical windings, and the distribution of magnetic flux density varies. When the distribution of the magnetic flux density varies, a large loss occurs locally, and the cylindrical winding becomes locally hot at the location where the loss occurs.

  Japanese Unexamined Patent Publication No. 3-67414 (Patent Document 1) is a prior art document that discloses a winding structure of a static induction appliance. In the winding structure of a static induction electric appliance described in Patent Document 1, a dislocation is performed by switching the inner diameter side and the outer diameter side of a conducting wire constituting a cylindrical winding, and both ends of the conducting wire are connected in parallel. ing.

Japanese Utility Model Publication No. 3-67414

  Patent Document 1 discloses a structure in which a conducting wire is displaced in one cylindrical winding, or a structure in which a conducting wire is displaced in an inner winding and an outer winding that are adjacent to each other in the radial direction. There is no description or suggestion of a reactor consisting of a cylindrical winding.

  The present invention has been made in view of the above-mentioned problems, and in a reactor constituted by a plurality of cylindrical windings, it is possible to reduce losses and generate local high temperature portions in the cylindrical windings. It aims at providing the reactor which can be suppressed.

  In the reactor according to the present invention, a first multiple cylindrical winding in which n-layer (n ≧ 2) first cylindrical windings are arranged concentrically and a second cylindrical winding in n-layer (n ≧ 2) are concentric. And a second multi-cylindrical winding that is coaxially located adjacent to the first multi-cylindrical winding. Each of the n-layer first cylindrical windings and each of the n-layer second cylindrical windings are connected to each other by wiring so as to correspond one-to-one. The first cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside in the n-th first cylindrical winding and the a-th layer (1 ≦ a ≦ n) from the inside in the n-th second cylindrical winding. The second cylindrical winding located at n) is connected to each other by wiring. A plurality of cylindrical winding connecting bodies each composed of a first cylindrical winding and a second cylindrical winding connected to each other are connected in parallel.

  ADVANTAGE OF THE INVENTION According to this invention, in the reactor comprised from the some cylindrical winding, loss can be reduced and it can suppress that a cylindrical winding becomes high temperature locally.

It is a perspective view which shows the structure of the reactor which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the connection structure of the II section of FIG. It is sectional drawing which looked at the reactor of FIG. 1 from the III-III line arrow direction. It is a perspective view which shows the structure of the reactor which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the connection structure of the V section of FIG.

  Hereinafter, a reactor according to each embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the part which is the same or it corresponds in a figure, and the description is not repeated. In the following description of the embodiment, an air core reactor will be described, but a reactor having a gap-filled iron core may be used.

(Embodiment 1)
FIG. 1 is a perspective view showing a configuration of a reactor according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing the connection structure of II part of FIG. FIG. 3 is a cross-sectional view of the reactor of FIG. 1 as viewed from the direction of arrows III-III. In FIG. 1, connection conductors to be described later are not shown.

  As shown in FIGS. 1 to 3, the reactor 100 according to the first embodiment of the present invention includes a first multi-cylinder winding 110 and a second multi-cylinder that is adjacent to the first multi-cylinder winding 110 and coaxially positioned. Winding 120 is provided.

  In the first multiple cylindrical winding 110, n-layer (n ≧ 2) first cylindrical windings are arranged concentrically. In the present embodiment, the first multiple cylindrical winding 110 includes three layers of first cylindrical windings 111 to 113, but the number of layers of the first cylindrical winding included in the first multiple cylindrical winding 110 is as follows. The number of layers is not limited to three but may be two or more.

  In the second multiple cylindrical winding 120, n-layer (n ≧ 2) second cylindrical windings are arranged concentrically. In the present embodiment, the second multiple cylindrical winding 120 includes three layers of second cylindrical windings 121 to 123, but the number of layers of the second cylindrical winding included in the second multiple cylindrical winding 120 is as follows. The number of layers is not limited to three but may be two or more.

  In the axial direction 1 of the first multiple cylindrical winding 110, the length of the first multiple cylindrical winding 110 is equal to the length of the second multiple cylindrical winding 120.

  Each of the first cylindrical windings 111 to 113 and the second cylindrical windings 121 to 123 is configured by winding a wire. The element wire has a structure in which the periphery of the copper wire is covered with insulating paper such as kraft paper.

  One end of each of the first cylindrical windings 111 to 113 is connected to the connection conductor 141. The other end of each of the second cylindrical windings 121 to 123 is connected to the connection conductor 142.

  Each of the first cylindrical windings 111 to 113 and each of the second cylindrical windings 121 to 123 are connected to each other by wiring so as to correspond one-to-one. In the first cylindrical windings 111 to 113, the first cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside, and in the second cylindrical windings 121 to 123, the a-th layer (1 ≦ a ≦ n) from the inside. The second cylindrical winding located at n) is connected to each other by wiring.

  Specifically, the other end of the first cylindrical winding 113 located on the first layer from the outside and the one end of the second cylindrical winding 121 located on the first layer from the inside are connected to each other by the wiring 133. Yes. The other end of the first cylindrical winding 112 located on the second layer from the outside and one end of the second cylindrical winding 122 located on the second layer from the inside are connected to each other by a wiring 132. The other end of the first cylindrical winding 111 located on the third layer from the outside and the one end of the second cylindrical winding 123 located on the third layer from the inside are connected to each other by a wiring 131.

  Each of the wirings 131 and 133 extends linearly in the radial direction 2 of the first multiple cylindrical winding 110 when viewed from the axial direction 1 of the first multiple cylindrical winding 110, as shown in FIG. It is located between the inner periphery and the outer periphery of one multiple cylindrical winding 110. The wiring 132 extends linearly in the axial direction 1 of the first multiple cylindrical winding 110.

  The wiring 133 connects the other end of the first cylindrical winding 113 and one end of the second cylindrical winding 121 at the shortest distance. The wiring 132 connects the other end of the first cylindrical winding 112 and one end of the second cylindrical winding 122 at the shortest distance. The wiring 131 connects the other end of the first cylindrical winding 111 and one end of the second cylindrical winding 123 at the shortest distance.

  As shown in FIG. 2, a cylindrical winding connection body composed of a first cylindrical winding 113 and a second cylindrical winding 121 connected to each other, and a first cylindrical winding 112 and a second cylindrical winding connected to each other. The cylindrical winding connection body composed of 122 and the cylindrical winding connection body composed of the first cylindrical winding 111 and the second cylindrical winding 123 connected to each other are connected in parallel.

  The lengths of the strands included in each of the three cylindrical winding connectors are substantially the same. Specifically, the total length of the strands included in the first cylindrical winding 113 and the length of the strands included in the second cylindrical winding 121 and the length of the strands included in the first cylindrical winding 112. And the total length of the strands included in the second cylindrical winding 122, and the total length of the strands included in the first cylindrical winding 111 and the length of the strands included in the second cylindrical winding 123. Are substantially equivalent to each other.

  The inner area of each of the three cylindrical winding connectors is substantially the same. Specifically, the total of the area inside the first cylindrical winding 113 and the area inside the second cylindrical winding 121, the area inside the first cylindrical winding 112, and the inside of the second cylindrical winding 122 And the sum of the inner area of the first cylindrical winding 111 and the inner area of the second cylindrical winding 123 are substantially equal to each other.

  Therefore, in the reactor 100 according to the present embodiment, the impedances of the three cylindrical winding connected bodies are substantially equal. Thereby, it is possible to suppress the occurrence of variation in the distribution of the magnetic flux density of the magnetic flux 10 generated in the reactor 100 by causing the current to flow through each of the three cylindrical winding connected bodies substantially uniformly. As a result, in reactor 100, loss can be reduced and local high temperature portions can be prevented from occurring in each of first cylindrical windings 111-113 and second cylindrical windings 121-123. By suppressing the occurrence of a local high temperature portion, it is possible to reduce deterioration due to overheating of the first cylindrical windings 111 to 113 and the second cylindrical windings 121 to 123.

  In the present embodiment, since each of the wirings 131 to 133 is formed with the shortest length, the amount of heat generated in each of the wirings 131 to 133 can be reduced. Moreover, since each of the wirings 131 to 133 is located between the inner periphery and the outer periphery of the first multiple cylindrical winding 110, the wirings 131 to 133 affect the magnetic field in the center of the reactor 100. Can be prevented.

(Embodiment 2)
Hereinafter, the reactor which concerns on Embodiment 2 of this invention is demonstrated with reference to drawings. FIG. 4 is a perspective view showing the configuration of the reactor according to Embodiment 2 of the present invention. FIG. 5 is a cross-sectional view showing a connection structure at a V portion in FIG. In FIG. 4, the connection conductor is not shown.

  As shown in FIGS. 4 and 5, the reactor 200 according to the second embodiment of the present invention includes a first multi-cylinder winding 210 and a second multi-cylinder positioned adjacent to the first multi-cylinder winding 210 on the same axis. The winding 220 includes a third multiple cylindrical winding 230 that is coaxially positioned adjacent to the second multiple cylindrical winding 220 on the side opposite to the first multiple cylindrical winding 210 side.

  In the first multiple cylindrical winding 210, n-layer (n ≧ 2) first cylindrical windings are arranged concentrically. In the present embodiment, the first multiple cylindrical winding 210 includes three layers of first cylindrical windings 211 to 213, but the number of layers of the first cylindrical winding included in the first multiple cylindrical winding 210 is as follows. The number of layers is not limited to three but may be two or more.

  In the second multiple cylindrical winding 220, n-layer (n ≧ 2) second cylindrical windings are arranged concentrically. In the present embodiment, the second multiple cylindrical winding 220 includes three layers of second cylindrical windings 221 to 223, but the number of layers of the second cylindrical winding included in the second multiple cylindrical winding 220 is as follows. The number of layers is not limited to three but may be two or more.

  In the third multiple cylindrical winding 230, n-layer (n ≧ 2) third cylindrical windings are arranged concentrically. In the present embodiment, the third multiple cylindrical winding 230 includes three layers of third cylindrical windings 231 to 233, but the number of layers of the third cylindrical winding included in the third multiple cylindrical winding 230 is as follows. The number of layers is not limited to three but may be two or more.

  In the axial direction 1 of the first multiple cylindrical winding 210, the length of the first multiple cylindrical winding 210 is equal to the length of the third multiple cylindrical winding 230, and the length of the first multiple cylindrical winding 210 is the same as the length of the first multiple cylindrical winding 210. The sum of the lengths of the three multiple cylindrical windings 230 is equal to the length of the second multiple cylindrical windings 220.

  Each of the first cylindrical windings 211 to 213, the second cylindrical windings 221 to 223, and the third cylindrical windings 231 to 233 is configured by winding a wire. The element wire has a structure in which the periphery of the copper wire is covered with insulating paper such as kraft paper.

  One end of each of the first cylindrical windings 211 to 213 is connected to the connection conductor 141. The other end of each of the third cylindrical windings 231 to 233 is connected to the connection conductor 142.

  Each of the first cylindrical windings 211 to 213 and each of the second cylindrical windings 221 to 223 are connected to each other by wiring so as to correspond one-to-one. In the first cylindrical windings 211 to 213, the first cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside, and in the second cylindrical windings 221 to 223, the a-th layer (1 ≦ a ≦ n) from the inside. The second cylindrical winding located at n) is connected to each other by wiring.

  Specifically, the other end of the first cylindrical winding 213 located in the first layer from the outside and one end of the second cylindrical winding 221 located in the first layer from the inside are connected to each other by the wiring 243. Yes. The other end of the first cylindrical winding 212 located on the second layer from the outside and the one end of the second cylindrical winding 222 located on the second layer from the inside are connected to each other by a wiring 242. The other end of the first cylindrical winding 211 located on the third layer from the outside and the one end of the second cylindrical winding 223 located on the third layer from the inside are connected to each other by a wiring 241.

  Each of the wirings 241 and 243 extends linearly in the radial direction of the first multiple cylindrical winding 210 when viewed from the axial direction 1 of the first multiple cylindrical winding 210. It is located between the perimeter and the perimeter. The wiring 242 extends linearly in the axial direction 1 of the first multiple cylindrical winding 210.

  The wiring 243 connects the other end of the first cylindrical winding 213 and one end of the second cylindrical winding 221 at the shortest distance. The wiring 242 connects the other end of the first cylindrical winding 212 and one end of the second cylindrical winding 222 at the shortest distance. The wiring 241 connects the other end of the first cylindrical winding 211 and one end of the second cylindrical winding 223 at the shortest distance.

  Each of the second cylindrical windings 221 to 223 and each of the third cylindrical windings 231 to 233 are connected to each other by wiring so as to correspond one-to-one. In the second cylindrical windings 221 to 223, the second cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside, and in the third cylindrical windings 231 to 233, the a-th layer (1 ≦ a ≦ n) from the inside. The third cylindrical winding located at n) is connected to each other by wiring.

  Specifically, the other end of the second cylindrical winding 223 located in the first layer from the outside and one end of the third cylindrical winding 231 located in the first layer from the inside are connected to each other by the wiring 253. Yes. The other end of the second cylindrical winding 222 located on the second layer from the outside and one end of the third cylindrical winding 232 located on the second layer from the inside are connected to each other by a wiring 252. The other end of the second cylindrical winding 221 located on the third layer from the outside and one end of the third cylindrical winding 233 located on the third layer from the inside are connected to each other by a wiring 251.

  Each of the wirings 251 and 253 extends linearly in the radial direction of the first multiple cylindrical winding 210 when viewed from the axial direction 1 of the first multiple cylindrical winding 210, and It is located between the perimeter and the perimeter. The wiring 252 extends linearly in the axial direction 1 of the first multiple cylindrical winding 210.

  The wiring 253 connects the other end of the second cylindrical winding 223 and one end of the third cylindrical winding 231 at the shortest distance. The wiring 252 connects the other end of the second cylindrical winding 222 and one end of the third cylindrical winding 232 at the shortest distance. The wiring 251 connects the other end of the second cylindrical winding 221 and one end of the third cylindrical winding 233 at the shortest distance.

  As shown in FIG. 5, a cylindrical winding connection body composed of a first cylindrical winding 213, a second cylindrical winding 221 and a third cylindrical winding 233 connected to each other, and a first cylindrical winding connected to each other. 212, the second cylindrical winding 222, and the third cylindrical winding 232, and the first cylindrical winding 211, the second cylindrical winding 223, and the third cylindrical winding 231 connected to each other. Are connected in parallel.

  The lengths of the strands included in each of the three cylindrical winding connectors are substantially the same. Specifically, the total of the length of the strand included in the first cylindrical winding 213, the length of the strand included in the second cylindrical winding 221 and the length of the strand included in the third cylindrical winding 233, The total of the length of the strands included in the first cylindrical winding 212, the length of the strands included in the second cylindrical winding 222, and the length of the strands included in the third cylindrical winding 232, and the first cylinder The total length of the strand included in the winding 211, the length of the strand included in the second cylindrical winding 223, and the length of the strand included in the third cylindrical winding 231 is substantially equal to each other. Yes.

  The inner area of each of the three cylindrical winding connectors is substantially the same. Specifically, the total of the area inside the first cylindrical winding 213, the area inside the second cylindrical winding 221, and the area inside the third cylindrical winding 233, and the inside of the first cylindrical winding 212 , The inner area of the second cylindrical winding 222 and the inner area of the third cylindrical winding 232, the inner area of the first cylindrical winding 211, and the inner area of the second cylindrical winding 223. And the total area inside the third cylindrical winding 231 are substantially equal to each other.

  Therefore, in the reactor 200 according to the present embodiment, the impedances of the three cylindrical winding connectors are substantially equal. As a result, it is possible to suppress the occurrence of variation in the distribution of the magnetic flux density of the magnetic flux 10 generated in the reactor 200 by causing the current to flow substantially uniformly through each of the three cylindrical winding connectors. As a result, in reactor 200, a loss is reduced, and a local high temperature portion is generated in each of first cylindrical windings 211 to 213, second cylindrical windings 221 to 223, and third cylindrical windings 231 to 233. This can be suppressed. By suppressing the occurrence of a local high temperature portion, it is possible to reduce deterioration due to overheating of each of the first cylindrical windings 211 to 213, the second cylindrical windings 221 to 223, and the third cylindrical windings 231 to 233.

  In the present embodiment, since each of the wirings 241 to 243 and the wirings 251 to 253 is formed with the shortest length, the amount of heat generated in each of the wirings 241 to 243 and the wirings 251 to 253 can be reduced. In addition, since each of the wirings 241 to 243 and the wirings 251 to 253 is located between the inner periphery and the outer periphery of the first multiple cylindrical winding 210, the wirings 241 to 241 are applied to the magnetic field at the center of the reactor 200. 243 and wirings 251 to 253 can be prevented from being affected.

  As described in the first and second embodiments, the lengths of the strands included in each of the plurality of cylindrical winding connectors are substantially equal, and the area inside each of the plurality of cylindrical winding connectors is The reactor may include four or more multiple cylindrical windings so as to be substantially equivalent.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It does not become a basis of limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. In addition, meanings equivalent to the claims and all modifications within the scope are included.

  1 axial direction, 2 radial direction, 10 magnetic flux, 100, 200 reactor, 110, 210 1st multiple cylindrical winding, 111, 112, 113, 211, 212, 213 1st cylindrical winding, 120, 220 2nd multiple cylinder Winding, 121, 122, 123, 221, 222, 223 Second cylindrical winding, 131, 132, 133, 241, 242, 243, 251, 252, 253 Wiring, 141, 142 Connection conductor, 230 Third multiple cylinder Winding, 231, 232, 233 Third cylindrical winding.

Claims (5)

a first multiple cylindrical winding in which n-layer (n ≧ 2) first cylindrical windings are arranged concentrically;
a second cylindrical winding of n layers (n ≧ 2) is arranged concentrically, and includes a second multiple cylindrical winding coaxially positioned adjacent to the first multiple cylindrical winding;
Each of the n-layer first cylindrical windings and each of the n-layer second cylindrical windings are connected to each other by wiring so as to correspond one-to-one.
A first cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside in the n-layer first cylindrical winding, and an a-th layer (1 ≦ 1) from the inside in the n-layer second cylindrical winding. the second cylindrical winding located in a ≦ n) is connected to each other by the wiring,
A reactor in which a plurality of cylindrical winding connecting bodies each composed of a first cylindrical winding and a second cylindrical winding connected to each other are connected in parallel.   The reactor according to claim 1, wherein a length of the first multiple cylindrical winding is equal to a length of the second multiple cylindrical winding in an axial direction of the first multiple cylindrical winding. A third cylindrical winding of n layers (n ≧ 2) is arranged concentrically, and a third cylindrical winding is located coaxially adjacent to the second multiple cylindrical winding on the side opposite to the first multiple cylindrical winding side. A multi-cylinder winding;
Each of the n-layer second cylindrical windings and each of the n-layer third cylindrical windings are connected to each other by wiring so as to correspond one-to-one.
The second cylindrical winding located in the a-th layer (1 ≦ a ≦ n) from the outside in the second cylindrical winding of n layers, and the a-th layer (1 ≦ 1) from the inside in the third cylindrical winding of n layers. a third cylindrical winding located in a ≦ n) is connected to each other by the wiring,
2. The reactor according to claim 1, wherein the plurality of cylindrical winding connecting bodies including a first cylindrical winding, a second cylindrical winding, and a third cylindrical winding connected to each other are connected in parallel.   In the axial direction of the first multiple cylindrical winding, the length of the first multiple cylindrical winding is equal to the length of the third multiple cylindrical winding, and the length of the first multiple cylindrical winding is the same as the length of the first multiple cylindrical winding. The reactor according to claim 3, wherein a total of three multi-cylindrical windings is equal to a length of the second multi-cylindrical winding.   The wiring extends linearly in the radial direction of the first multiple cylindrical winding as viewed from the axial direction of the first multiple cylindrical winding, and is formed between an inner circumference and an outer circumference of the first multiple cylindrical winding. The reactor according to any one of claims 1 to 4, which is located between the reactors.

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