JP2006294997A - Winding structure of compound reactor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding structure of a compound reactor capable of reducing the number of components, a manufacturing cost, and the whole space of components with leakage inductance decreased by integrally manufacturing a plurality of reactors that are individually manufactured in one compound reactor. <P>SOLUTION: The compound reactor comprises a first reactor 13 composed of a magnetic core 9 and a main winding 12 wound around the core 9, and a second reactor 14 composed of a core 9 and an auxiliary winding 11 wound around the core 9. The first reactor 13 differs from the second reactor 14 in application or in a characteristic, the auxiliary winding 11 is formed by lapping the main winding 12, and further having a winding width W1 approximately equal to the winding width W2 of the main winding 12. Therefore, a coupling coefficient can be made large to decrease the leakage inductance. Further, the number of components, the manufacturing cost, and the whole space of the components can be reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technology capable of commercializing a plurality of reactors having different uses or characteristics used in electronic equipment as one composite reactor.

  Conventionally, reactors are used in a wide variety of applications. Typical reactors are series reactors that are connected in series with the motor circuit to limit the current during a short circuit, parallel reactors that stabilize the current sharing between the parallel circuits, and current that is connected to the short circuit is limited to protect the machine connected to this. Current-limiting reactor that is connected in series to the motor circuit to limit the starting current, shunt reactor that is connected in parallel to the transmission line and compensates for leading-phase reactive power and suppresses abnormal voltage, between neutral point and ground A neutral point reactor that is used to limit the ground fault current that flows in the event of a power system ground fault when connected to a power source, and an arc-extinguishing reactor that automatically extinguishes the arc that occurs when a one-phase ground fault occurs in a three-phase power system There is.

  As described above, the usage purpose of the reactor is wide, and a plurality of reactors are arranged for different purposes even in the same product. And as for the reactor, the product which has the specification according to each use, ie, a shape, a dimension, a structure, etc. is commercialized. For example, a reactor used for the purpose of suppressing an overcurrent such as a starting current of an inverter circuit includes one in which a rectangular wire is wound around a magnetic core having a gap by edgewise winding. (For example, refer to Patent Document 1).

  In addition to the reactor described above, some inverter circuits are provided with a reactor for the purpose of reducing the burden on the switching element.

JP 2003-1224039 A

  In the conventional reactor described above, since a plurality of reactors having different uses or characteristics are separately manufactured, there is a problem that the number of mounted parts and the manufacturing cost increase. Moreover, since it was commercialized separately, there also existed a problem that the space of the several reactor arrange | positioned in an inverter circuit increased. In addition, there is a problem that leakage inductance generated from a plurality of reactors is large, which adversely affects other components in the inverter circuit and other circuits.

  The present invention has been made in view of the problems as described above, and its purpose is to commercialize the first reactor and the second reactor that have been separately produced as one composite reactor, It is an object of the present invention to provide a composite reactor winding structure capable of reducing the number of parts, manufacturing cost, and overall part space.

  Another object of the present invention is to provide a winding structure of a composite reactor that can reduce leakage inductance by the above-described winding structure.

  In order to achieve the above object, in the composite reactor winding structure of the present invention, a first reactor including a magnetic core and a first winding wound around the core, the core and A composite reactor winding structure comprising: a second reactor comprising a second winding wound around the core; wherein the first reactor is used with the second reactor, or The characteristics are different, and the second winding is formed to overlap the first winding wound around the core.

  Thereby, the 1st reactor and 2nd reactor which were commercialized separately can be commercialized as one composite reactor. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the case where the product is manufactured separately. Furthermore, the overall component space can be reduced.

  In the composite reactor winding structure of the present invention, the second winding has a winding width wider than the winding width of the first winding. Here, the “winding width” is a dimension in the winding orthogonal direction of the winding among the dimensions from the winding start point to the end point of the winding wound around the core. In the present invention, the winding width of the second winding, that is, the dimension in the winding orthogonal direction is made wider than the dimension of the first winding in the winding orthogonal direction. As a result, the winding width of the second winding is wider than the winding width of the first winding, thereby reducing the number of components, manufacturing cost, and overall component space while reducing leakage inductance. be able to.

  In the composite reactor winding structure of the present invention, the second winding has a winding width substantially equal to the winding width of the first winding. Thereby, it is possible to reduce the number of parts, the manufacturing cost, and the overall part space while reducing the leakage inductance.

  In the composite reactor winding structure of the present invention, the first winding is a rectangular wire wound by edgewise winding, and the second winding is viewed from a cross section of the rectangular wire. The rectangular wire is wound by a winding method having an edge in the longitudinal direction. As a result, even if the turns ratio of the first winding and the second winding is different, by winding the rectangular wire with an edge in the longitudinal direction when viewed from the cross section, the second winding The winding width can be adjusted.

  In the composite reactor winding structure of the present invention, the second winding is the rectangular wire wound by edgewise winding, and the first winding is from a section of the rectangular wire. The rectangular wire is wound by a winding method having the edge in the longitudinal direction as viewed. Thereby, even if the turns ratio of the first winding and the second winding is different, the rectangular wire is wound with an edge in the longitudinal direction when viewed from the cross section, so that the first winding The winding width can be adjusted.

  In the composite reactor winding structure of the present invention, a first reactor including a magnetic core and a first winding wound around the core, the core and the periphery of the core A second reactor constituted by a second winding wound around the core, and a third reactor constituted by the core and a third winding wound around the core. In the winding structure of the type reactor, the first reactor and the third reactor are different in use or characteristics from the second reactor, and the second winding is wound around the core. The third winding is formed so as to overlap with the second winding, the winding width of the first winding, and the second winding. The winding width of the wire and the winding width of the third winding are substantially the same. That.

  Thereby, the 1st reactor, the 2nd reactor, and the 3rd reactor which were separately commercialized can be commercialized as one composite type reactor. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the case where the product is manufactured separately. Furthermore, the overall component space can be reduced. Also, leakage inductance can be reduced.

  As a composite reactor winding structure according to the present invention, a composite reactor used in an inverter circuit will be taken up and a first embodiment will be described with reference to FIGS. The embodiments described below do not limit the invention according to the scope of claims, and all combinations of features described in the present embodiment are essential to the solution means of the invention. Is not limited.

  FIG. 1 is a simplified circuit diagram of a composite reactor 10 according to the first embodiment. In FIG. 1, the 1st reactor 13 and the 2nd reactor 14 which are used for an inverter circuit are shown. The 1st reactor 13 is arrange | positioned in order to suppress overcurrents, such as a starting current of an inverter circuit. On the other hand, the 2nd reactor 14 is arrange | positioned in order to reduce the burden of a switching element. In the first embodiment, the first reactor 13 and the second reactor 14 are commercialized as a single composite reactor 10. Specifically, with the core 9 in common, a rectangular wire 17 (see FIG. 5) used for the winding 12 of the first reactor 13 is wound around the core 9. Further, a rectangular wire 16 (see FIG. 4) used for the winding 11 of the second reactor 14 is wound around the core 9. In general, since the inductance of the first reactor 13 is larger than the inductance of the second reactor 14, the first reactor 13 is a main reactor, and the second reactor 14 is an auxiliary reactor. Therefore, the following description will be made assuming that the winding 12 of the first reactor 13 is the main winding 12 and the winding 11 of the second reactor 14 is the auxiliary winding 11.

  FIG. 2 is a perspective view of the composite reactor 10 of the first embodiment. The composite reactor 10 of the first embodiment houses the reactor component 15 of the first embodiment in the thermally conductive case 1. After storage, the filler 8 is poured and fixed. As will be described later, the reactor component 15 according to the first embodiment mainly includes a main winding 12, an auxiliary winding 11, and a core 9 (see FIG. 1), and has a predetermined electrical specification such as an inductance value. To the inverter circuit. Further, during energization, the main winding 12, the auxiliary winding 11, and the core 9 (see FIG. 1) generate heat. Therefore, the heat conductive case 1 is cooled by forced cooling means to efficiently dissipate heat generated from the reactor component 15.

  FIG. 3 is an exploded perspective view of the composite reactor 10 of FIG. As shown in FIG. 3, the composite reactor 10 includes the reactor component 15, the heat conductive case 1, and the insulating / heat dissipating sheet 7 of the first embodiment. In the reactor component 15 of the first embodiment, the rectangular wire 17 (see FIG. 5) is wound around the bobbin 4 to form the main winding 12, and then the rectangular wire 16 (see FIG. 4) is further wound to assist. A winding 11 is formed. If it demonstrates concretely, the bobbin 4 will be comprised from the partition part 4a and the winding frame part 4b, and has a structure which can isolate | separate the partition part 4a and the winding frame part 4b from a viewpoint of work efficiency improvement. In the first embodiment, two partitions 4a and two reels 4b are prepared. After the flat wire 17 (see FIG. 5) is wound around the winding frame portion 4b to form the main winding 12, the flat wire 16 (see FIG. 4) is wound around the main winding 12 to cover the auxiliary winding. 11 is formed. Thereby, as will be described later, the leakage inductance is reduced. Note that the lead portions 11c (see FIG. 4) and 12c (see FIG. 5), which are ends of the main winding 12 and the auxiliary winding 11, are stripped of the coating and the conductors are exposed, such as crimp terminals not shown. And is connected to the inverter circuit.

  Next, after the main winding 12 and the auxiliary winding 11 are formed on the winding frame portion 4b, the partition portions 4a are fitted from both ends of the winding frame portion 4b. Next, the core 9 is inserted into the winding frame portion 4b. Here, the core 9 is composed of a plurality of magnetic blocks 3a and 3b and a sheet material 6 inserted as a magnetic gap between the blocks 3b. The core 9 of the first embodiment is composed of two blocks 3a, six blocks 3b, and eight sheet materials 6. The shape of the core 9 is substantially ring-shaped, and the magnetic block 3b and the sheet material 6, which are straight portions, are inserted into the winding frame portion 4b of the reactor component 15 shown in FIG. The core 9 has two linear portions, and a main winding 12 and an auxiliary winding 11 are formed on each linear portion via a winding frame portion 4b, and predetermined electrical characteristics are obtained. The magnetic block 3a is coupled to each linear portion, and the core 9 is formed in a substantially ring shape. Further, since the magnetic block 3a is not inserted into the winding frame portion 4b of the reactor part 15, it appears to be easily detached. However, after the magnetic block 3b and the sheet material 6 are inserted into the winding frame portion 4b of the bobbin 4, the block 3a and the sheet material 6 are bonded. From this, the magnetic block 3a is structured not to be detached.

  The reactor component 15 of the first embodiment is formed by the above procedure. Thereafter, the insulating / heat-dissipating sheet 7 is laid on the bottom surface (not shown) of the heat conductive case 1, and then the reactor component 15 is accommodated in the heat conductive case 1. Next, the filler 8 (see FIG. 2) is poured into the heat conductive case 1, and the heat conductive case 1 and the reactor component 15 are fixed. The insulating and heat radiating sheet 7 is disposed between the auxiliary winding 11 and the heat conductive case 1 to insulate them. Furthermore, since the insulating and heat radiating sheet 7 of the first embodiment uses a sheet having a thermal conductivity better than that of the surrounding filler 8, the heat generated from the auxiliary winding 11 is efficiently thermally conductive. 1 can be conducted. Thereby, the heat generated from the reactor component 15 is efficiently radiated from the thermally conductive case 1 cooled by the forced cooling means.

  Next, the winding structure of the composite reactor 10 which is a characteristic part of the present invention will be described. 4 is a perspective view of the auxiliary winding 11 used in the composite reactor 10 of FIG. The flat wire 16 used for the auxiliary winding 11 shown in FIG. 4 is wound with an edge in the longitudinal direction when viewed from the cross section of the flat wire 16. The auxiliary winding 11 includes two winding portions 11a and 11b having a winding width W1, a lead portion 11c, and a connecting portion 11d that connects the two winding portions 11a and 11b. Thus, the two winding portions 11a and 11b, the lead portion 11c, and the connecting portion 11d are electrically connected. The two winding parts 11a and 11b are wound around the two winding frame parts 4b, respectively. Here, as shown in FIG. 4, the winding width W <b> 1 is the dimension in the direction orthogonal to the winding of the auxiliary winding 11 among the dimensions from the winding start point to the end point of the winding portions 11 a and 11 b of the auxiliary winding 11. is there. In the first embodiment, the auxiliary winding 11 is formed using a flat wire 16 having a dimension d1 in the longitudinal direction and a thickness t1. Specifically, the flat wire 16 is wound with an edge in the longitudinal direction when viewed from the cross section. At that time, the winding interval P1 shown in FIG. Thus, the winding width W1 is substantially equal to the sum of the number of turns d1 in the longitudinal direction of the rectangular wire 16 forming the auxiliary winding 11 and the number (turns-1) times the winding interval P1. The number of turns of the auxiliary winding 11 is determined by the electrical characteristics required for the auxiliary winding 11, such as inductance, unless the characteristics of the core 9 (see FIG. 2) to be used are changed. The winding interval P1 depends on the voltage between the auxiliary windings 11. That is, the winding width W1 is equal to the rectangular wire 16 unless the voltage between the core 9 to be used (see FIG. 2) and the auxiliary winding 11 and the electrical characteristics required for the auxiliary winding 11, such as inductance, are changed. Is proportional to the dimension d1 in the longitudinal direction. Therefore, the winding width W1 can be increased by increasing the dimension d1 of the flat wire 16 in the longitudinal direction. Further, the lead portion 11c, which is the end portion of the auxiliary winding 11, is peeled off and the conductor is exposed. Crimp terminals or the like (not shown) are provided on the lead portion 11c and connected to the inverter circuit.

  FIG. 5 is a perspective view of the main winding 12 used in the composite reactor 10 of FIG. As shown in FIG. 5, the rectangular wire 17 used for the main winding 12 is wound by edgewise winding. Similarly to the auxiliary winding 11, the main winding 12 has two winding portions 12a and 12b having a winding width W2, a lead portion 12c, and a connecting portion that connects the two winding portions 12a and 12b. 12d. Thus, the two winding parts 12a and 12b, the lead part 12c, and the connecting part 12d are electrically connected. Similar to the auxiliary winding 11, the two winding portions 12a and 12b are respectively wound around the two winding frame portions 4b. Here, as shown in FIG. 5, the winding width W2 is the dimension in the direction perpendicular to the winding of the main winding 12 among the dimensions from the winding start point to the end point of the winding portions 12a and 12b of the main winding 12. is there. In the first embodiment, the main winding 12 is formed using a rectangular wire 17 having a dimension d2 in the longitudinal direction and a thickness t2. Specifically, the rectangular wire 17 is wound edgewise, and the winding is wound by the number of turns while maintaining the winding interval P2 shown in FIG. Thus, the winding width W2 is substantially equal to the sum of the number of turns t2 of the rectangular wire 17 forming the main winding 12 and the number of turns of the winding interval P2 (number of turns-1). The number of turns of the main winding 12 is the same as that of the auxiliary winding 11 as long as the characteristics of the core 9 (see FIG. 2) to be used are not changed. It depends on. The winding interval P2 depends on the voltage between the main windings 12. That is, the winding width W2 is equal to the rectangular wire 17 as long as the voltage between the core 9 to be used (see FIG. 2), the voltage between the main windings 12, and the electrical characteristics required for the main winding 12, such as inductance, are not changed. Is proportional to the thickness t2. Therefore, the winding width W2 can be increased by changing the thickness t2 of the flat wire 17. However, when the thickness t2 is increased, the winding width W2 is increased, and there is a problem that the reactor component 15 (see FIG. 2) cannot be reduced in size. Further, the lead portion 12c which is an end portion of the main winding 12 is stripped of the coating, and the conductor is exposed. Crimp terminals or the like (not shown) are provided on the lead portion 12c and connected to the inverter circuit.

  Compared to the auxiliary winding 11 shown in FIG. 4, the main winding 12 has a required electrical characteristic, for example, an inductance value that is large, so that the number of turns is increased. As will be described later, in the winding structure of the composite reactor 10 according to the first embodiment, the winding width W2 of the main winding 12 and the auxiliary winding are reduced in order to reduce the size of the composite reactor 10 while reducing leakage inductance. It is desired to make the winding width W1 (see FIG. 4) of the winding 11 (see FIG. 4) as equal as possible. However, generally, since the cross-sectional area of the flat wire is determined by the magnitude of the current flowing through the flat wire, according to the winding width when the flat wire 16 (see FIG. 4) is wound by edgewise winding, When the thickness t2 of the rectangular wire 17 used for the main winding 12 is reduced and the winding width W2 of the main winding 12 is reduced, the dimension d2 in the longitudinal direction of the rectangular wire 17 is increased. For this reason, there is a problem that it is difficult to wind by edgewise winding. As described above, since the winding interval P2 depends on the voltage between the main windings 12, there is a limit in reducing the winding width W2. Therefore, in the first embodiment, the flat wire 17 is wound by edgewise winding to form the main winding 12, and the flat wire 16 (see FIG. 4) has an edge in the longitudinal direction when viewed from the cross section. The auxiliary winding 11 (see FIG. 4) is formed. Accordingly, the rectangular wire used for the auxiliary winding 11 (see FIG. 4) without changing the cross-sectional area of the rectangular wire 16 (see FIG. 4) determined by the magnitude of the current flowing through the rectangular wire 16 (see FIG. 4). The thickness t1 (see FIG. 4) of 16 (see FIG. 4) is reduced and the dimension d1 (see FIG. 4) in the longitudinal direction is increased, whereby the winding width W1 (see FIG. 4) of the auxiliary winding 11 (see FIG. 4). 4)). That is, the winding width W1 (see FIG. 4) of the auxiliary winding 11 (see FIG. 4) and the winding width W2 of the main winding 12 can be made equal.

  FIG. 6 is a perspective view showing a state in which the auxiliary winding 11 and the main winding 12 of the composite reactor 10 of FIG. 2 are formed. FIG. 7 is a perspective view showing a cross section of the winding of FIG. 6 cut by a region A designated by a one-dot chain line.

  In FIG. 6, the winding width W1 of the auxiliary winding 11 (see FIG. 4) and the winding width W2 of the main winding 12 (see FIG. 5) are equal. Here, if the winding width W1 (see FIG. 4) of the auxiliary winding 11 is wider than the winding width W2 (see FIG. 5) of the main winding 12, and the auxiliary winding 11 covers the main winding 12, the coupling is established. The coefficient can be increased. Therefore, leakage inductance can be reduced. However, if the winding width W1 of the auxiliary winding 11 (see FIG. 4) is larger than the winding width W2 of the main winding 12 (see FIG. 5), the reactor component 15 (see FIG. 2) becomes that much larger and cannot be reduced in size. . Therefore, the winding width W1 of the auxiliary winding 11 (see FIG. 4) and the winding width W2 of the main winding 12 (see FIG. 5) are made equal. Further, as shown in FIG. 7, in the first embodiment, the auxiliary winding 11 and the main winding 12 are formed so as to overlap as much as possible. This is because the coupling coefficient can be increased as the overlapping portion of the auxiliary winding 11 and the main winding 12 is wider. The first reactor 13 (see FIG. 1) and the second reactor 14 (see FIG. 1) are combined into one composite reactor 10 (see FIG. 1) by the winding structure which is a characteristic part of the first embodiment shown in FIG. 1)). Therefore, it is possible to reduce the number of parts, the manufacturing cost, and the overall part space. Further, the main winding 12 has a longitudinal dimension d2 (see FIG. 5) of the rectangular wire 17 to be used (see FIG. 5) depending on required electrical characteristics, for example, an inductance value, a voltage value, a current value, and the like. Although it is difficult to change the thickness t2 (see FIG. 5), the number of turns and the winding interval P2 (see FIG. 5), the longitudinal dimension d1 of the flat wire 16 (see FIG. 4) used for the auxiliary winding 11 (FIG. 4). The winding width W1 (see FIG. 4) can be adjusted by changing the thickness t1 (see FIG. 4). Thereby, the winding width W1 (see FIG. 4) of the auxiliary winding 11 and the winding width W2 (see FIG. 5) of the main winding 12 can be made substantially equal.

  FIG. 8 is a perspective view showing a state where the bobbin 4 (see FIG. 3) is assembled in FIG. In FIG. 8, the main winding 12 and the auxiliary winding 11 shown in FIG. 6 are formed on two winding frame portions 4b (see FIG. 3) of the bobbin 4 (see FIG. 3), and the above-described winding frame portion 4b (see FIG. 3). Two partition portions 4a are fitted from both ends of FIG. Furthermore, the reactor part 15 (refer FIG. 2) is formed by inserting the core 9 (refer FIG. 1) in the winding frame part 4b (refer FIG. 3).

  9 is a perspective view of the reactor part 15 in which the core 9 is assembled in FIG. 8, FIG. 10 is a perspective view showing a cross section of the reactor part of FIG. 9 cut out by the region B designated by the one-dot chain line, and FIG. FIG. 10 is a perspective view showing a cross section of the reactor part of FIG. 9 cut out by a region C designated by a one-dot chain line.

  Further, the magnetic block 3b (see FIG. 3) and the sheet material 6 (see FIG. 3) of the core 9 are inserted into the two winding frame parts 4b (see FIG. 3), and the magnetic material is removed from both sides of the partition 4a. The reactor part 15 is formed by being sandwiched between the blocks 3a (see FIG. 3). Only the reactor part 15 can satisfy the predetermined electrical specifications. However, when used in an electric circuit of a device having forced cooling means, the upper limit value of the temperature rise determined by the heat resistance grade of the insulating material and the specification requirement from the main winding 12, the auxiliary winding 11 and the core 9 of the reactor component 15. The heat generated exceeds the above, and this heat generation causes dielectric breakdown of the insulating material. In general, the winding generates heat when an excessive current flows with respect to the wire diameter of the winding, and the core generates heat due to the voltage, so when trying to make the temperature rise of the reactor component below the above upper limit value, Reactor part size increases. Therefore, in the composite reactor 10 according to the first embodiment, as shown in FIG. 2, the reactor component 15 is housed in the heat conductive case 1 and fixed with the filler 8, and the heat conductive case 1. By forcibly cooling (for example, air cooling or water cooling), the temperature inside the reactor component 15 is made equal to or lower than the upper limit of the temperature rise value so as not to exceed the upper limit of the temperature rise value.

  10 and 11, the main winding 12 and the auxiliary winding 11 are formed in the winding frame portion 4b of the bobbin 4, the partition portions 4a are fitted from both ends of the winding frame portion 4b, and the winding frame portion 4b is further fitted. The cross section of the reactor component 15 formed by inserting the magnetic block 3b and the sheet material 6 of the core 9 (see FIG. 1) and then sandwiching the magnetic block 3a is shown. As shown in FIGS. 10 and 11, after the main winding 12 is formed on the winding frame portion 4 b, the auxiliary winding 11 is formed so as to reliably cover the main winding 12. Thereby, the 1st reactor 13 (refer FIG. 1) and the 2nd reactor 14 (refer FIG. 1) can be commercialized as one composite reactor 10 (refer FIG. 1). Therefore, it is possible to reduce the number of parts, manufacturing cost, and overall part space. Further, since the overlapping portion of the auxiliary winding 11 and the main winding 12 is wide, the coupling coefficient can be increased, and thus the leakage inductance can be reduced. Furthermore, since the winding width W2 (see FIG. 5) of the main winding 12 and the winding width W1 (see FIG. 4) of the auxiliary winding 11 are substantially equal, the reactor part 15 can be downsized.

  Next, the composite reactor 20 of the second embodiment will be described with reference to FIGS. The embodiments described below do not limit the invention according to the scope of claims, and all combinations of features described in the present embodiment are essential to the solution means of the invention. Is not limited. Further, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 12 is a perspective view of the composite reactor 20 of the second embodiment. The composite reactor 20 of the second embodiment is different from the composite reactor 10 (see FIG. 1) of the first embodiment only in the reactor component 25. That is, the composite reactor 20 is formed by housing the reactor component 25 in the thermally conductive case 1 and then pouring the filler 8 into it. The heat conductive case 1 and the filler 8 are the same as the composite reactor 10 (refer FIG. 1) of 1st Embodiment.

  FIG. 13 is an exploded perspective view of the composite reactor 20 of FIG. As shown in FIG. 13, the composite reactor 20 includes the reactor component 25, the heat conductive case 1, and the insulating / heat dissipating sheet 7 of the second embodiment. The reactor component 25 of the second embodiment differs from the reactor component 15 (see FIG. 2) of the first embodiment only in the winding structure. The main winding 22 uses the same rectangular wire 17 (see FIG. 5) as the main winding 12 (see FIG. 5) of the first embodiment. That is, the dimension d2 (see FIG. 5) and the thickness t2 (see FIG. 5) in the longitudinal direction of the flat wire 17 (see FIG. 5) are the same. Since the electrical characteristics are the same, the number of turns of the main winding 22 is the same as the number of turns of the main winding 12 (see FIG. 5). Further, the winding interval of the main winding 22 is the same as the winding interval P2 of the main winding 12 (see FIG. 5). Therefore, the winding width of the main winding 22 is equal to the winding width W2 of the main winding 12 (see FIG. 5). The auxiliary winding 21 also uses the same rectangular wire 16 (see FIG. 4) as the auxiliary winding 11 (see FIG. 4) of the first embodiment. That is, the dimension d1 (see FIG. 4) and the thickness t1 (see FIG. 4) in the longitudinal direction of the flat wire 16 (see FIG. 4) are the same. Since the electrical characteristics are the same, the number of turns of the auxiliary winding 21 is the same as the number of turns of the auxiliary winding 11 (see FIG. 4). Further, the winding interval of the auxiliary winding 21 is the same as the winding interval P1 of the auxiliary winding 11 (see FIG. 4). Therefore, the winding width of the auxiliary winding 21 is equal to the winding width W1 of the auxiliary winding 11 (see FIG. 4).

  On the other hand, unlike the reactor component 15 (refer FIG. 2) of 1st Embodiment, the reactor component 25 winds the flat wire 16 (refer FIG. 4) around the winding frame part 4b, and forms the auxiliary | assistant winding 21. FIG. The flat wire 16 is wound in the same manner as in the first embodiment with an edge in the longitudinal direction when viewed from the cross section. Thereafter, the rectangular wire 17 (see FIG. 5) is wound so as to cover the auxiliary winding 21 to form the main winding 22. The flat wire 17 is edgewise wound and wound in the same manner as in the first embodiment. Thereby, as will be described later, the leakage inductance is reduced. As in the first embodiment, the lead portions (not shown), which are the ends of the main winding 22 and the auxiliary winding 21, are stripped of the covering and the conductor is exposed, and are provided with a crimp terminal (not shown). Connected to the inverter circuit.

  Then, the partition part 4a is fitted from both sides of the winding frame part 4b. The core 9 is inserted into the winding frame part 4b, and the reactor part 25 of the second embodiment is formed. The core 9 is the same as that of the first embodiment, and includes a plurality of magnetic blocks 3a and 3b and a sheet material 6 inserted as a magnetic gap between the blocks 3b. Thereafter, as in the first embodiment, the insulating / heat-dissipating sheet 7 is laid on the bottom surface (not shown) of the thermal conductive case 1, and then the reactor component 25 is accommodated in the thermal conductive case 1. Thereafter, the filler 8 (see FIG. 12) is poured into the heat conductive case 1, and the heat conductive case 1 and the reactor component 25 are fixed to form the composite reactor 20 of the second embodiment.

  Next, the winding structure of the composite reactor 20 of the second embodiment will be described. 14 is a perspective view showing a state in which the auxiliary winding 22 and the main winding 21 of the composite reactor 20 of FIG. 12 are formed, and FIG. 15 is a view of FIG. 14 cut by a region D designated by a one-dot chain line. It is a perspective view which shows the cross section of a line. As described above, the main winding 22 uses the same rectangular wire 17 (see FIG. 5) as the main winding 12 (see FIG. 5) of the first embodiment. The flat wire 17 (see FIG. 5) is wound in the same manner as in the first embodiment. Furthermore, the winding width of the main winding 22 is made equal to the winding width W2 of the main winding 12 (see FIG. 5). The auxiliary winding 21 also uses the same rectangular wire 16 (see FIG. 4) as the auxiliary winding 11 (see FIG. 4) of the first embodiment. The flat wire 16 (see FIG. 4) is wound in the same manner as in the first embodiment. Furthermore, the winding width of the auxiliary winding 21 is made equal to the winding width W1 of the auxiliary winding 11 (see FIG. 4).

  The feature of the second embodiment is that the auxiliary winding 21 is formed inside the main winding 22 as shown in FIGS. 14 and 15, the winding width W1 of the auxiliary winding 21 and the winding width W2 of the main winding 22 are the same as in the first embodiment. Furthermore, in the second embodiment, a first reactor composed of the core 9 (see FIG. 1) and the auxiliary winding 21, and a second reactor composed of the core 9 (see FIG. 1) and the main winding 22. A reactor can be commercialized as one composite reactor 20 (see FIG. 12). Therefore, it is possible to reduce the number of parts, manufacturing cost, and overall part space. Further, since the main winding 12 is formed so as to cover the auxiliary winding 21, the coupling coefficient can be increased, and thus the leakage inductance can be reduced. In the second embodiment, since the main winding 22 is formed so as to cover the auxiliary winding 21, the connecting portion 21d of the auxiliary winding 21 is on the left side of the winding width W2 of the main winding 22 as shown in FIG. Placed in. Since the winding width W1 of the auxiliary winding 21 and the winding width W2 of the main winding 22 are the same, as shown in FIG. 14, the auxiliary winding 21 and the main winding 22 overlap as compared with the first embodiment. The part is narrow. Thereby, although mentioned later, the coupling coefficient is small compared with 1st Embodiment. Further, the main winding 22 has a large electrical characteristic required by the auxiliary winding 21, such as an inductance value, and a large amount of heat is generated from the auxiliary winding 21. Therefore, by winding the auxiliary winding 22 inside the main winding 21, the heat generated in the main winding 21 is transferred to the heat conductive case 1 (see FIG. 12) via the filler 8 (see FIG. 12). It can also be conducted efficiently.

  Next, the composite reactor 30 of the third embodiment will be described with reference to FIGS. 16 to 19. The embodiments described below do not limit the invention according to the scope of claims, and all combinations of features described in the present embodiment are essential to the solution means of the invention. Is not limited. Furthermore, the same reference numerals are given to the same parts as those in the first embodiment and the second embodiment, and detailed description thereof will be omitted.

  FIG. 16 is a perspective view of the composite reactor 30 of the third embodiment. The composite reactor 30 of the third embodiment is different from the composite reactor 10 (see FIG. 2) of the first embodiment only in the reactor component 35. That is, the composite reactor 30 is formed by housing the reactor part 35 in the thermally conductive case 1 and then pouring the filler 8 into it. The heat conductive case 1 and the filler 8 are the same as the composite reactor 10 (refer FIG. 2) of 1st Embodiment.

  FIG. 17 is an exploded perspective view of the composite reactor 30 of FIG. As shown in FIG. 17, the composite reactor 30 includes the reactor component 35, the heat conductive case 1, and the insulating / heat dissipating sheet 7 of the third embodiment. The reactor part 35 of the third embodiment differs from the reactor part 15 (see FIG. 2) of the first embodiment only in the winding structure.

  The main winding 32 uses the same rectangular wire 17 (see FIG. 5) as the main winding 12 (see FIG. 5) of the first embodiment. That is, the dimension d2 (see FIG. 5) and the thickness t2 (see FIG. 5) in the longitudinal direction of the flat wire 17 (see FIG. 5) are the same. Since the electrical characteristics are the same, the number of turns of the main winding 32 is the same as the number of turns of the main winding 12 (see FIG. 5). Further, the winding interval of the main winding 32 is the same as the winding interval P2 of the main winding 12 (see FIG. 5). Therefore, the winding width of the main winding 32 is equal to the winding width W2 of the main winding 12 (see FIG. 5). The first auxiliary winding 31 and the second auxiliary winding 33 also use the same rectangular wire 16 (see FIG. 4) as the auxiliary winding 11 (see FIG. 4) of the first embodiment. That is, the dimension d1 (see FIG. 4) and the thickness t1 (see FIG. 4) in the longitudinal direction of the flat wire 16 (see FIG. 4) are the same. Since the electrical characteristics are the same, the number of turns of the first auxiliary winding 31 and the second auxiliary winding 33 is the same as the number of turns of the auxiliary winding 11 (see FIG. 4). Furthermore, the winding interval between the first auxiliary winding 31 and the second auxiliary winding 33 is also the same as the winding interval P1 of the auxiliary winding 11 (see FIG. 4). Therefore, the winding width of the first auxiliary winding 31 and the second auxiliary winding 33 is equal to the winding width W1 of the auxiliary winding 11 (see FIG. 4).

  On the other hand, unlike the reactor part 15 (refer FIG. 2) of 1st Embodiment, the reactor component 35 winds the flat wire 16 (refer FIG. 4) around the winding frame part 4b, and makes the 1st auxiliary | assistant winding 31 be used. Forming. The flat wire 16 is wound in the same manner as in the first embodiment with an edge in the longitudinal direction when viewed from the cross section. Thereafter, the rectangular wire 17 (see FIG. 5) is wound to form the main winding 32 so as to cover the first auxiliary winding 31. The flat wire 17 is edgewise wound and wound in the same manner as in the first embodiment. Further, the rectangular wire 16 (see FIG. 4) is wound so as to securely cover the main winding 32 to form the second auxiliary winding 33. The flat wire 16 is wound in the same manner as in the first embodiment with an edge in the longitudinal direction when viewed from the cross section. Thereby, as will be described later, the leakage inductance is reduced. As in the first embodiment, the lead portions (not shown) which are the end portions of the main winding 32, the first auxiliary winding 31, and the second auxiliary winding 33 are stripped of the coating, and the conductor is exposed. A crimp terminal (not shown) or the like is provided and connected to the inverter circuit.

  Then, the partition part 4a is fitted from both sides of the winding frame part 4b. The core 9 is inserted into the winding frame part 4b, and the reactor part 35 of the third embodiment is formed. The core 9 is the same as that of the first embodiment, and includes a plurality of magnetic blocks 3a and 3b and a sheet material 6 inserted as a magnetic gap between the blocks 3b. Thereafter, as in the first embodiment, after the insulating and heat-dissipating sheet 7 is laid on the bottom surface (not shown) of the heat conductive case 1, the reactor part 35 is accommodated in the heat conductive case 1. Then, the filler 8 (refer FIG. 16) is poured in the heat conductive case 1, the heat conductive case 1 and the reactor component 35 are fixed, and the composite reactor 30 of 3rd Embodiment is formed.

  Next, the winding structure of the composite reactor 30 of the third embodiment will be described. 18 is a perspective view showing a state where the first auxiliary winding 31, the second auxiliary winding 33, and the main winding 32 of the composite reactor 30 of FIG. 16 are formed, and FIG. 19 is designated by a one-dot chain line. FIG. 19 is a perspective view showing a cross section of the winding of FIG.

  As described above, the main winding 32 uses the same rectangular wire 17 (see FIG. 5) as the main winding 12 (see FIG. 5) of the first embodiment. The flat wire 17 (see FIG. 5) is wound in the same manner as in the first embodiment. Furthermore, the winding width of the main winding 32 is made equal to the winding width W2 of the main winding 12 (see FIG. 5). The first auxiliary winding 31 and the second auxiliary winding 33 also use the same rectangular wire 16 (see FIG. 4) as the auxiliary winding 11 (see FIG. 4) of the first embodiment. The flat wire 16 (see FIG. 4) is wound in the same manner as in the first embodiment. Furthermore, the winding width of the first auxiliary winding 31 and the second auxiliary winding 33 is made equal to the winding width W1 of the auxiliary winding 11 (see FIG. 4).

  As shown in FIGS. 18 and 19, the third embodiment is characterized in that the first auxiliary winding 31 is formed inside the main winding 32 and the second auxiliary winding 33 is outside the main winding 32. It is formed in. 18 and 19, the winding width W1 of the first auxiliary winding 31, the winding width W1 of the second auxiliary winding 33, and the winding width W2 of the main winding 32 are equal as in the first embodiment. It has become. Furthermore, in 3rd Embodiment, it comprises from the core 9 (refer FIG. 1) and the 1st reactor comprised from the 1st auxiliary | assistant winding 31, the core 9 (refer FIG. 1), and the main coil | winding 32. The second reactor and the third reactor constituted by the core 9 (see FIG. 1) and the second auxiliary winding 33 can be commercialized as one composite reactor 30 (see FIG. 16). . Therefore, it is possible to reduce the number of parts, manufacturing cost, and overall part space. In the third embodiment, since the main winding 32 is formed so as to cover the first auxiliary winding 31, the coupling coefficient can be increased as in the second embodiment. Therefore, leakage inductance can be reduced. In the third embodiment, since the main winding 32 is formed so as to cover the first auxiliary winding 31, the connecting portion 31d of the first auxiliary winding 31 is the main winding 32 as shown in FIG. Is arranged on the left side of the winding width W2. Since the winding width W1 of the first auxiliary winding 31 and the winding width W2 of the main winding 32 are the same, the first auxiliary winding 31 and the winding width W2 of the main winding 32 are compared with those of the first embodiment, as shown in FIG. The overlapping portion of the main winding 32 is narrow. Thereby, although mentioned later, the coupling coefficient is small compared with 1st Embodiment. However, as shown in FIG. 19, the first auxiliary winding 31 and the second auxiliary winding 33 are formed with the main winding 32 interposed therebetween. Compared with the embodiment and the second embodiment, the coupling coefficient can be further increased. Therefore, the leakage inductance can be further reduced as compared with the first embodiment and the second embodiment.

  Next, the coupling coefficients of the conventional reactor part, the reactor part 15 of the first embodiment, the reactor part 25 of the second embodiment, and the reactor part 35 of the third embodiment will be compared. Note that the leakage inductance decreases as the coupling coefficient of the reactor component increases. As in the first embodiment, the conventional reactor part winds the auxiliary winding 11 around the winding frame portion 4b of the bobbin 4 by edgewise winding. After the winding, separately from the auxiliary winding 11, the main winding 12 is wound around the winding frame portion 4b by edgewise winding. Then, the partition part 4a is fitted from both sides of the winding frame part 4b. The core 9 is inserted into the winding frame 4b to form a conventional reactor part. Table 1 shows the measurement results of measuring the coupling coefficient of each winding for the above four types of reactor parts.

Table 1. Comparison table of coupling coefficient of each reactor part

  As shown in Table 1, compared to the conventional reactor parts, the reactor part 15 of the first embodiment, the reactor part 25 of the second embodiment, and the reactor part 35 of the third embodiment are all coupled coefficients. Is getting bigger. From this, leakage inductance can be reduced. In the reactor component 35 of the third embodiment, the inductance value of the auxiliary winding shown in Table 1 is a value obtained by combining the first auxiliary winding 31 and the second auxiliary winding 33. According to Table 1, the coupling coefficient can be increased by making the winding width of the main winding equal to that of the auxiliary winding and forming the main winding and the auxiliary winding in an overlapping manner. Therefore, leakage inductance can be reduced. Moreover, the reactor component 15 of 1st Embodiment has a coupling coefficient larger than the reactor component 25 of 2nd Embodiment. As described above, in the second embodiment, since the main winding 22 is formed so as to cover the auxiliary winding 21, the connecting portion 21 d of the auxiliary winding 21 is on the left side of the winding width W <b> 2 of the main winding 22. Since the winding width W1 of the auxiliary winding 21 and the winding width W2 of the main winding 22 are the same, as shown in FIG. 14, compared with the first embodiment, The overlapping portion of the main winding 22 is narrow. Thereby, the reactor component 15 of 1st Embodiment becomes large in a coupling coefficient compared with the reactor component 25 of 2nd Embodiment. Therefore, the reactor component 15 of 1st Embodiment can reduce a leakage inductance rather than the reactor component 25 of 2nd Embodiment. However, as described above, the reactor component 25 of the second embodiment can efficiently dissipate the heat generated by the main winding 22 from the reactor component 15 of the first embodiment. Furthermore, the reactor component 35 of the third embodiment has a larger coupling coefficient than the reactor component 15 of the first embodiment and the reactor component 25 of the second embodiment. That is, by forming the main winding 32 by sandwiching it between the first auxiliary winding 31 and the second auxiliary winding 33, the coupling coefficient can be increased and the leakage inductance can be further reduced.

  As described above, according to the winding structure of the composite reactor 10 according to the first embodiment, the magnetic core 9 and the main winding 12 that is the first winding wound around the core 9. And a second reactor 14 composed of a core 9 and an auxiliary winding 11 that is a second winding wound around the core 9. Further, the first reactor 13 is different in use or characteristics from the second reactor 14, and the auxiliary winding 11 is formed so as to overlap the main winding 12 wound around the core 9.

  Thereby, the 1st reactor 13 and the 2nd reactor 14 which were separately commercialized can be commercialized as one composite reactor 10. FIG. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the case where the product is manufactured separately. Furthermore, the overall component space can be reduced.

  Further, according to the winding structure of the composite reactor of the present invention, the auxiliary winding 11 may have a winding width W1 wider than the winding width W2 of the main winding 12. In this way, since the winding width W1 of the auxiliary winding 11 is wider than the winding width W2 of the main winding 12, this reduces the number of components, manufacturing costs, and overall component space while reducing leakage inductance. Can be reduced.

  Further, according to the winding structure of the composite reactor 10 according to the first embodiment, the auxiliary winding 11 has a winding width W1 that is substantially equal to the winding width W2 of the main winding 12. Thereby, it is possible to reduce the number of parts, the manufacturing cost, and the overall part space while reducing the leakage inductance.

  Further, according to the winding structure of the composite reactor 10 according to the first embodiment, the main winding 12 is a flat wire 17 wound by edgewise winding, and the auxiliary winding 11 is a flat wire 16. Since the rectangular wire 16 is wound by a winding method having an edge in the longitudinal direction when viewed from the cross section of FIG. 1, even if the turns ratio of the main winding 12 and the auxiliary winding 11 is different, the flat wire 16 is removed from the cross section. The winding width W1 of the auxiliary winding 11 can be adjusted by winding with an edge in the longitudinal direction as viewed.

  Further, according to the winding structure of the composite reactor 20 according to the second embodiment, the main winding 22 is a flat wire 17 wound by edgewise winding, and the auxiliary winding 21 is a flat wire 16. Therefore, even if the turns ratio of the auxiliary winding 21 and the main winding 22 is different, the rectangular wire 16 is removed from the cross section. The winding width W1 of the auxiliary winding 21 can be adjusted by winding with an edge in the longitudinal direction as viewed.

  Further, according to the winding structure of the composite reactor 30 according to the third embodiment, the magnetic core 9 and the first auxiliary winding 31 that is the first winding wound around the core 9 are provided. A first reactor composed of a core 9 and a second reactor composed of a main winding 32 that is a second winding wound around the core 9, and a periphery of the core 9 and the core 9 And a third reactor composed of a second auxiliary winding 33, which is a third winding wound around. Further, the first reactor and the third reactor are different in use or characteristics from the second reactor, and the main winding 32 is further formed on the first auxiliary winding 31 wound around the core 9. The second auxiliary winding 33 is formed so as to overlap the main winding 32, the winding width W1 of the first auxiliary winding 31, the winding width W2 of the main winding 32, and the second auxiliary winding. The winding width W1 of the wire 33 is substantially the same.

  Thereby, the 1st reactor, the 2nd reactor, and the 3rd reactor which were separately commercialized can be commercialized as one composite reactor 30. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the case where the product is manufactured separately. Furthermore, the overall component space can be reduced. Also, leakage inductance can be reduced.

  The embodiment described above is an example of the implementation of the present invention, and the scope of the present invention is not limited thereto, and other various embodiments are within the scope described in the claims. It is applicable to. For example, the main winding 12 of the first embodiment is divided into the winding portions 12a and 12b, but is not particularly limited thereto, and may not be divided. Similarly, the main winding 22 of the second embodiment and the winding 32 of the third embodiment are also divided. However, the present invention is not particularly limited thereto, and may not be divided. Further, although the flat wire 17 is wound by edgewise winding, it is not particularly limited to this, and other winding methods can be applied.

  Moreover, although the auxiliary | assistant winding 11 of 1st Embodiment is divided | segmented into the winding parts 11a and 11b, it is not limited to this in particular, It is not necessary to divide | segment. Similarly, the auxiliary winding 21 of the second embodiment, the first auxiliary winding 31 and the second auxiliary winding 33 of the third embodiment are also divided, but are not particularly limited thereto. It does not have to be divided. Further, the flat wire 16 is wound with an edge in the longitudinal direction when viewed from the cross section, but the present invention is not particularly limited to this, and the winding width W1 of the auxiliary windings 11, 21, 31 and 33 and If the winding width W2 of the main windings 12, 22 and 32 can be made substantially equal, other winding methods can be applied.

  Further, in the first embodiment, the number of turns of the winding portions 11a and 11b is not described, but any number of turns may be used as long as the required electrical characteristics can be satisfied. Similarly, the number of turns of the winding portions 12a and 12b may be any number as long as the required electrical characteristics can be satisfied.

  Further, in the reactor component 25 of the second embodiment, since the connecting portion 21d is provided on the left side of the winding width W2 of the main winding 22, the overlapping portion of the auxiliary winding 21 and the main winding 22 is the first portion. Although it is narrow compared with the reactor component 15 of this embodiment, it is not limited to this, The other shape may be sufficient as long as the auxiliary | assistant winding 21 is wound. That is, if the connecting portion 21d of the auxiliary winding 21 has the shape of the connecting portion 12d of the main winding 12 using the reactor part 15 of the first embodiment, the auxiliary winding 21 and the main winding 22 are formed. Can be widened, and the coupling coefficient can be increased. Further, since the winding width W1 of the auxiliary winding 21 and the winding width W2 of the main winding 22 are made equal, the overlapping portion of the auxiliary winding 21 and the main winding 22 is added to the reactor component 15 of the first embodiment. Although it is narrower than that, it is not particularly limited to this, and the winding width W1 of the auxiliary winding 21 may be made wider than the winding width W2 of the main winding 22. By widening the winding width W1 of the auxiliary winding 21, the overlapping portion of the auxiliary winding 21 and the main winding 22 can be formed with the reactor component 15 of the first embodiment without changing the shape of the auxiliary winding 11. Can be equivalent.

  Further, in the reactor part 35 of the third embodiment, since the connecting portion 31d is provided on the left side of the winding width W2 of the main winding 32, the overlapping portion of the first auxiliary winding 31 and the main winding 32 is Although it is narrow compared with the reactor component 15 of 1st Embodiment, it is not specifically limited to this, The 1st auxiliary | assistant winding 31 may be another shape, if it is wound. That is, if the connecting portion 31d of the first auxiliary winding 31 has the shape of the connecting portion 12d of the main winding 12 using the reactor part 15 of the first embodiment, the first auxiliary winding The overlapping portion of 31 and the main winding 32 can be widened, and the coupling coefficient can be increased. Further, since the winding width W1 of the first auxiliary winding 31 and the winding width W2 of the main winding 32 are equal, the overlapping portion of the first auxiliary winding 31 and the main winding 32 is the first implementation. However, the present invention is not limited to this, and the winding width W1 of the first auxiliary winding 31 may be wider than the winding width W2 of the main winding 32. . By widening the winding width W1 of the auxiliary winding 21, the overlapping portion of the auxiliary winding 21 and the main winding 22 can be formed with the reactor component 15 of the first embodiment without changing the shape of the auxiliary winding 11. Can be equivalent.

  Any electronic device having a circuit that requires a plurality of reactors such as an inverter circuit is applicable.

It is a simple circuit diagram of the composite type reactor of 1st Embodiment. It is a perspective view of the composite type reactor of 1st Embodiment. It is a disassembled perspective view of the composite type reactor of FIG. It is a perspective view of the auxiliary | assistant coil | winding used for the composite type reactor of FIG. It is a perspective view of the main coil | winding used for the composite type reactor of FIG. It is a perspective view which shows the state which formed the auxiliary | assistant coil | winding and main coil | winding of the composite type reactor of FIG. It is a perspective view which shows the cross section of the coil | winding of FIG. 6 cut off by the area | region A designated with the dashed-dotted line. It is a perspective view which shows the state which assembled the bobbin in FIG. It is a perspective view of the reactor component which assembled the core in FIG. It is a perspective view which shows the cross section of the reactor component of FIG. 9 cut off by the area | region B designated with the dashed-dotted line. It is a perspective view which shows the cross section of the reactor component of FIG. 9 cut off by the area | region C designated with the dashed-dotted line. It is a perspective view of the composite type reactor of 2nd Embodiment. It is a disassembled perspective view of the composite type reactor of FIG. It is a perspective view which shows the state which formed the auxiliary | assistant winding and main winding of the composite type reactor of FIG. It is a perspective view which shows the cross section of the coil | winding of FIG. 14 cut off by the area | region D designated with the dashed-dotted line. It is a perspective view of the composite type reactor of 3rd Embodiment. It is a disassembled perspective view of the composite type reactor of FIG. FIG. 17 is a perspective view showing a state in which the first auxiliary winding, the second auxiliary winding, and the main winding of the composite reactor of FIG. 16 are formed. It is a perspective view which shows the cross section of the coil | winding of FIG. 18 cut off by the area | region E designated with the dashed-dotted line.

Explanation of symbols

1 Thermally conductive case, 3a, 3b Magnetic block, 4 bobbin,
4a partition part, 4b winding frame part, 6 sheet material, 7 insulation and heat radiation sheet, 8 filler,
9 core, 10 composite reactor, 11 auxiliary winding, 11a, 11b winding part,
11c lead part, 11d connecting part, 12 main winding, 12a, 12b winding part, 12c lead part, 12d connecting part, 13 1st reactor, 14 2nd reactor,
15 reactor parts, 16, 17 rectangular wire, 20 combined reactor,
21 auxiliary winding, 21d connecting part, 22 main winding, 25 reactor parts,
30 composite reactor, 31 first auxiliary winding, 31d connecting portion, 32 main winding,
33 second auxiliary winding, 35 reactor parts,
d1, d2 dimensions, P1. P2 Winding interval, t1, t2 thickness, W1, W2 winding width

Claims (6)

A first reactor composed of a magnetic core and a first winding wound around the core, and a second winding wound around the core and the core In the winding structure of the composite reactor comprising the second reactor,
The first reactor is different from the second reactor in use or characteristics,
The composite reactor winding structure, wherein the second winding is formed so as to overlap the first winding wound around the core. 2. The composite reactor winding structure according to claim 1, wherein the second winding has a winding width wider than a winding width of the first winding. 2. The composite reactor winding structure according to claim 1, wherein the second winding has a winding width substantially equal to a winding width of the first winding. The first winding is a rectangular wire wound by edgewise winding,
4. The composite type according to claim 1, wherein the second winding is the rectangular wire wound in a winding method having an edge in a longitudinal direction when viewed from a cross section of the rectangular wire. Reactor winding structure. The second winding is the rectangular wire wound by edgewise winding,
4. The composite according to claim 1, wherein the first winding is the rectangular wire wound by a winding method having the edge in a longitudinal direction when viewed from a cross section of the rectangular wire. Winding structure of type reactor. A first reactor composed of a magnetic core and a first winding wound around the core, and a second winding wound around the core and the core In a winding structure of a composite reactor comprising: a second reactor; and a third reactor composed of the core and a third winding wound around the core.
The first reactor and the third reactor are different from the second reactor in use or characteristics,
The second winding is formed so as to overlap the first winding wound around the core,
The third winding is formed so as to overlap the second winding,
The winding structure of the composite reactor, wherein the winding width of the first winding, the winding width of the second winding, and the winding width of the third winding are substantially the same.

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