WO2018070200A1 - Transformer and power converter comprising same - Google Patents
Transformer and power converter comprising same Download PDFInfo
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- WO2018070200A1 WO2018070200A1 PCT/JP2017/033992 JP2017033992W WO2018070200A1 WO 2018070200 A1 WO2018070200 A1 WO 2018070200A1 JP 2017033992 W JP2017033992 W JP 2017033992W WO 2018070200 A1 WO2018070200 A1 WO 2018070200A1
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- transformer
- bobbin
- primary winding
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- secondary winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/10—Single-phase transformers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/06—Insulation of windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
Definitions
- the present invention relates to a transformer (transformer) and a power converter including the same, and more particularly, to a transformer with low noise during operation suitable for a power supply converter and the like and a power converter including the transformer.
- a flange portion made of a resin material is provided in the middle of the cylindrical body portion of the bobbin that winds these windings. (For example, refer to Patent Document 1).
- FIG. 3A is a schematic cross-sectional view showing a structural example of a transformer 101 having a simplified configuration from the conventional resonant power transformer described in Patent Document 1 except for an auxiliary winding and the like.
- FIG. 3B shows an example of the structure of the transformer 101A in which a sufficient distance is secured between the primary winding 21 and the secondary winding 22 instead of providing a flange portion in the middle of the body portion 111A of the bobbin 110A. It is a schematic sectional drawing shown.
- flanges 112 and 114 are provided at both ends of the body 111 of the bobbin 110 of the transformer 101, and the body 111 is also located in the middle of the body 111 in two regions in the axial direction.
- a flange portion 113 is provided so as to be partitioned into two.
- the primary winding 21 is wound around the region between the flange portion 112 and the flange portion 113, and the secondary winding 22 is interposed between the flange portion 113 and the flange portion 114.
- the flange 113 is located between the primary winding 21 and the secondary winding 22 and separates them, and secures a distance necessary for insulation (determines the positional relationship).
- the leakage inductance is determined by the distance (positional relationship) between the primary winding 21 and the secondary winding 22, and this leakage inductance has a great influence on the circuit operation.
- This inter-winding capacitance Cp is the transformer structure, that is, the electrode plate area S [m 2 ] and the electrode plate interval d [m], and the dielectric constant of the dielectric between the primary winding and the secondary winding. It is determined by ⁇ [F / m].
- the flanges 112 to 114 are all made of the same resin material as that of the bobbin 110, and the dielectric constant ⁇ of the resin material is high. For this reason, the inter-winding capacitance Cp generated between the primary winding 21 and the secondary winding 22 increases and noise increases.
- the interwinding capacitance Cp can be reduced, but the transformer 101A itself.
- the size of the is too large.
- an object of the present invention is to provide a transformer capable of reducing the interwinding capacitance and reducing noise without increasing the size, and such a transformer.
- a power converter comprising:
- a transformer according to the present invention includes a bobbin attached to a core forming a magnetic circuit, the bobbin being axially partitioned into a first region and a second region, and at least a part of the inner side.
- a saddle that is hollow, a hook holding part that holds the hook on the bobbin, a primary winding wound around the first region of the bobbin, and a winding around the second region of the bobbin The secondary winding is provided.
- the cavity inside the flange is preferably as large as possible, and may be formed in an annular shape, for example, but is not limited to such a shape. What is necessary is just to provide the collar holding
- the cavity may be formed as a portion on the inner side of the flange portion, excluding the at least one thin rod-shaped flange holding portion that holds the flange portion on the body portion of the bobbin.
- the interwinding capacitance between the primary winding and the secondary winding can be reduced and noise can be reduced without increasing the size of the transformer itself. it can.
- At least one of the primary winding and the secondary winding may be reinforced and insulated.
- a three-layer insulated wire may be used, but the present invention is not limited to this.
- the distance between the primary winding and the secondary winding can be further reduced, so that the size of the transformer can be reduced.
- a power converter provided with any of the above-described transformers is also within the scope of the present invention, and according to such a power converter, a power supply device with less noise during operation can be obtained.
- the interwinding capacitance between the primary winding and the secondary winding can be reduced and the noise can be reduced without increasing the size of the transformer itself.
- FIG. 2A is a perspective view showing a schematic structure of the entire transformer 1 according to the first embodiment of the present invention.
- FIG. 2B is a schematic cross-sectional view showing a structural example of the transformer 1.
- (A) And (b) is the schematic which illustrates the concrete provision method of the collar holding
- (A) is a schematic sectional drawing which shows the structural example of the trans
- FIG. 1 is a schematic diagram illustrating an example of the structure of the transformer 101A in which a sufficient distance is secured between the primary winding 21 and the secondary winding 22 instead of providing a flange portion in the middle of the body 111A of the bobbin 110A. It is sectional drawing.
- FIG. 1A is a perspective view showing a schematic structure of the entire transformer 1 according to the first embodiment of the present invention.
- FIG. 1B is a schematic sectional view showing a structural example of the transformer 1. Note that the same reference numerals are assigned to the same components as those of the above-described conventional transformer 101 and transformer 101A.
- flanges 12 and 14 are respectively provided at both ends of an elliptic cylindrical body 11 of a bobbin 10 attached to a core forming a magnetic circuit.
- a flange portion 13 (corresponding to “a flange portion” in the present invention) is provided in the middle of the body portion 11 so as to divide the body portion 11 into two regions in the axial direction.
- the primary winding 21 is wound around the region between the flange portion 12 and the flange portion 13, and the secondary winding 22 is arranged in parallel with the primary winding 21. It is wound in the area between the heel part 13 and the heel part 14.
- the flange 13 is located between the primary winding 21 and the secondary winding 22 and separates them, and secures a distance (insulation distance) necessary for insulation.
- At least one (either one or both) of the primary winding 21 and the secondary winding 22 may be reinforced and insulated.
- a three-layer insulated wire may be used for the primary winding 21 and the secondary winding 22, but the present invention is not limited to this.
- reinforced insulation is performed in this way, it is not necessary to provide the above-described insulation distance between the primary winding 21 and the secondary winding 22.
- the collar portions 12 to 14 are all made of the same resin material as the bobbin 10, and the dielectric constant ⁇ of the resin material is high.
- the collar part 13 since the collar part 13 is formed so that at least a part of the inner side becomes a cavity 13a (so as to remove a part of the wall of the original collar part 13), it has an angular ring shape.
- the shape of the collar portion 13 may be other annular shapes such as an annular shape, but is not limited thereto.
- a thin rod-like heel holding portion 13b for holding the heel portion 13 on the body portion 11 of the bobbin 10 is provided at one lower position.
- the number, shape and location of the hook holding portions 13b are not limited to this.
- the dielectric constant ⁇ of air is much lower than the dielectric constant ⁇ of the resin material, the overall dielectric constant ⁇ of the flange 13 and the cavity 13a between the primary winding 21 and the secondary winding 22 is reduced. .
- the interwinding capacitance Cp between the primary winding and the secondary winding is about 9.3 pF. It decreased by 20% to 7.3 pF. This is equivalent to about ⁇ 2 dB in terms of calculation as a filter effect due to capacitor reduction.
- the interwinding capacitance between the primary winding 21 and the secondary winding 22 is reduced and noise is also reduced.
- the size of the transformer 1 itself is increased. Absent.
- FIG. 2A and FIG. 2B are schematic views illustrating a specific method of providing a hook holding portion 13Ab that holds a square annular hook portion 13A on a bobbin 10A having a rectangular tubular body. .
- the collar holding portion 13Ab may be provided in only one place, or as shown in FIG. You may provide wrinkle holding
- the transformer 1 described above may be applied to a power converter such as an insulating converter. According to such a power converter, a power supply device with less noise during operation can be obtained.
Abstract
A transformer (1) comprising: a bobbin (10) that is mounted on a core that forms a magnetic circuit; a collar (13) that is at least partially hollow on the inside and divides the bobbin (10) into a first region and a second region in the axial direction; a collar holding part (13b) that holds the collar (13) on the bobbin (10); a primary winding (21) that is wound around the first region of the bobbin (10); and a secondary winding (22) that is wound around the second region of the bobbin (10).
Description
本発明は、変圧器（トランス）およびそれを備えた電力変換器に関し、特に、電源装置用コンバータなどに適した動作時のノイズが低い変圧器およびそれを備えた電力変換器に関する。
The present invention relates to a transformer (transformer) and a power converter including the same, and more particularly, to a transformer with low noise during operation suitable for a power supply converter and the like and a power converter including the transformer.
従来、トランスの１次巻線と２次巻線との間の距離を固定するため、これらの巻線を捲回するボビンの筒状胴部の中間に樹脂材料で形成された鍔部が設けられていた（例えば特許文献１を参照）。
Conventionally, in order to fix the distance between the primary winding and secondary winding of the transformer, a flange portion made of a resin material is provided in the middle of the cylindrical body portion of the bobbin that winds these windings. (For example, refer to Patent Document 1).
図３（ａ）は、特許文献１に記載された従来技術の共振型電源用トランスから、補助巻線などを除いて簡略化した構成のトランス１０１の構造例を示す概略断面図である。図３（ｂ）は、ボビン１１０Ａの胴部１１１Ａの中間にも鍔部を設ける代わりに１次巻線２１と２次巻線２２との間に十分な距離を確保したトランス１０１Ａの構造例を示す概略断面図である。
FIG. 3A is a schematic cross-sectional view showing a structural example of a transformer 101 having a simplified configuration from the conventional resonant power transformer described in Patent Document 1 except for an auxiliary winding and the like. FIG. 3B shows an example of the structure of the transformer 101A in which a sufficient distance is secured between the primary winding 21 and the secondary winding 22 instead of providing a flange portion in the middle of the body portion 111A of the bobbin 110A. It is a schematic sectional drawing shown.
図３（ａ）に示すように、トランス１０１のボビン１１０の胴部１１１の両端に鍔部１１２、１１４がそれぞれ設けられるとともに、胴部１１１の中間にも胴部１１１を軸方向に２つの領域に区画するように鍔部１１３が設けられている。
As shown in FIG. 3 (a), flanges 112 and 114 are provided at both ends of the body 111 of the bobbin 110 of the transformer 101, and the body 111 is also located in the middle of the body 111 in two regions in the axial direction. A flange portion 113 is provided so as to be partitioned into two.
ボビン１１０の胴部１１１において、１次巻線２１が鍔部１１２と鍔部１１３との間の領域に捲回されるとともに、２次巻線２２が鍔部１１３と鍔部１１４との間の領域に捲回されている。鍔部１１３は、１次巻線２１と２次巻線２２との間に位置してこれらを分離するとともに、絶縁に必要な距離を確保（位置関係を決定）している。そして、１次巻線２１と２次巻線２２との間の距離（位置関係）によって漏れインダクタンスが決まり、この漏れインダクタンスが回路動作に大きな影響を与える。
In the body portion 111 of the bobbin 110, the primary winding 21 is wound around the region between the flange portion 112 and the flange portion 113, and the secondary winding 22 is interposed between the flange portion 113 and the flange portion 114. Has been wound up in the area. The flange 113 is located between the primary winding 21 and the secondary winding 22 and separates them, and secures a distance necessary for insulation (determines the positional relationship). The leakage inductance is determined by the distance (positional relationship) between the primary winding 21 and the secondary winding 22, and this leakage inductance has a great influence on the circuit operation.
ところで、トランスを動作させるためのスイッチ（スイッチング素子）が１次側で動作すると、電圧または電流が変化することでノイズが発生する。発生したノイズは、トランスの１次巻線と２次巻線との間の巻線間容量Ｃｐによって伝導し、電源装置などの製品の（コモンモード）ノイズとして検出される。この巻線間容量Ｃｐは、トランスの構造、すなわち、電極板面積Ｓ［ｍ2］および電極板間隔ｄ［ｍ］と、１次巻線と２次巻線との間の誘電体の誘電率ε［Ｆ／ｍ］で決まる。
By the way, when a switch (switching element) for operating the transformer operates on the primary side, noise is generated due to a change in voltage or current. The generated noise is conducted by the interwinding capacitance Cp between the primary winding and the secondary winding of the transformer, and is detected as (common mode) noise of a product such as a power supply device. This inter-winding capacitance Cp is the transformer structure, that is, the electrode plate area S [m 2 ] and the electrode plate interval d [m], and the dielectric constant of the dielectric between the primary winding and the secondary winding. It is determined by ε [F / m].
トランス１０１では、鍔部１１２～１１４はいずれもボビン１１０と同じ樹脂材料で形成されており、その樹脂材料の誘電率εが高い。そのため、１次巻線２１と２次巻線２２との間で発生する巻線間容量Ｃｐが増加してノイズが増大してしまう。
In the transformer 101, the flanges 112 to 114 are all made of the same resin material as that of the bobbin 110, and the dielectric constant ε of the resin material is high. For this reason, the inter-winding capacitance Cp generated between the primary winding 21 and the secondary winding 22 increases and noise increases.
一方、図３（ｂ）に示すように、１次巻線２１と２次巻線２２との間に十分な距離を確保したトランス１０１Ａでは、巻線間容量Ｃｐは小さくできるものの、トランス１０１Ａ自体のサイズが大きくなり過ぎる。
On the other hand, as shown in FIG. 3B, in the transformer 101A in which a sufficient distance is secured between the primary winding 21 and the secondary winding 22, the interwinding capacitance Cp can be reduced, but the transformer 101A itself. The size of the is too large.
従来技術のこのような課題に鑑み、本発明の目的は、サイズの大型化を伴うことなく、巻線間容量を低減させてノイズも低減させることが可能な変圧器と、そのような変圧器を備えた電力変換器とを提供することである。
In view of such problems of the prior art, an object of the present invention is to provide a transformer capable of reducing the interwinding capacitance and reducing noise without increasing the size, and such a transformer. And a power converter comprising:
上記目的を達成するため、本発明の変圧器は、磁気回路を形成するコアに装着されるボビンと、前記ボビンを軸方向に第１領域および第２領域に区画するとともに、内側の少なくとも一部が空洞である鍔部と、前記鍔部を前記ボビンに保持する鍔保持部と、前記ボビンの前記第１領域に捲回された１次巻線と、前記ボビンの前記第２領域に捲回された２次巻線とを備えることを特徴とする。
In order to achieve the above object, a transformer according to the present invention includes a bobbin attached to a core forming a magnetic circuit, the bobbin being axially partitioned into a first region and a second region, and at least a part of the inner side. A saddle that is hollow, a hook holding part that holds the hook on the bobbin, a primary winding wound around the first region of the bobbin, and a winding around the second region of the bobbin The secondary winding is provided.
ここで、前記鍔部の内側の前記空洞はできるだけ大きいことが好ましく、例えば環状に形成されてもよいが、このような形状に限らない。前記鍔部を前記ボビンに保持する鍔保持部は１箇所または複数箇所に設ければよい。前記空洞は、前記鍔部の前記内側で、前記鍔部を前記ボビンの胴部に保持する少なくとも１つの細棒状の前記鍔保持部を除いた部分として形成されてもよい。
Here, the cavity inside the flange is preferably as large as possible, and may be formed in an annular shape, for example, but is not limited to such a shape. What is necessary is just to provide the collar holding | maintenance part which hold | maintains the said collar part in the said bobbin in one place or multiple places. The cavity may be formed as a portion on the inner side of the flange portion, excluding the at least one thin rod-shaped flange holding portion that holds the flange portion on the body portion of the bobbin.
このような構成の変圧器によれば、変圧器自体のサイズが大型化することなく、１次巻線と２次巻線との間の巻線間容量を低減させてノイズも低減させることができる。
According to the transformer having such a configuration, the interwinding capacitance between the primary winding and the secondary winding can be reduced and noise can be reduced without increasing the size of the transformer itself. it can.
本発明の変圧器において、前記１次巻線および前記２次巻線の少なくとも一方が強化絶縁されていてもよい。それには、例えば３層絶縁線を用いてもよいが、これに限るわけではない。
In the transformer of the present invention, at least one of the primary winding and the secondary winding may be reinforced and insulated. For this purpose, for example, a three-layer insulated wire may be used, but the present invention is not limited to this.
このような構成の変圧器によれば、１次巻線と２次巻線との間隔をより小さくできるので、変圧器のサイズを小型化できる。
According to the transformer having such a configuration, the distance between the primary winding and the secondary winding can be further reduced, so that the size of the transformer can be reduced.
上述したいずれかの変圧器を備えた電力変換器も本発明の範疇であり、そのような電力変換器によれば、動作時のノイズが少ない電源装置が得られる。
A power converter provided with any of the above-described transformers is also within the scope of the present invention, and according to such a power converter, a power supply device with less noise during operation can be obtained.
本発明の変圧器によれば、変圧器自体のサイズが大型化することなく、１次巻線と２次巻線との間の巻線間容量を低減させてノイズも低減させることができる。
According to the transformer of the present invention, the interwinding capacitance between the primary winding and the secondary winding can be reduced and the noise can be reduced without increasing the size of the transformer itself.
また、本発明の変圧器を備えた電力変換器によれば、動作時のノイズが少ない電源装置が得られる。
Further, according to the power converter equipped with the transformer of the present invention, a power supply device with less noise during operation can be obtained.
以下、本発明のいくつかの実施形態を、図面を参照して説明する。
Hereinafter, some embodiments of the present invention will be described with reference to the drawings.
＜第１実施形態＞
図１（ａ）は本発明の第１実施形態に係るトランス１全体の概略構造を示す斜視図である。図１（ｂ）はこのトランス１の構造例を示す概略断面図である。なお、上述した従来技術のトランス１０１やトランス１０１Ａと同一の構成部材には同一の参照符号を付すこととする。 <First Embodiment>
FIG. 1A is a perspective view showing a schematic structure of theentire transformer 1 according to the first embodiment of the present invention. FIG. 1B is a schematic sectional view showing a structural example of the transformer 1. Note that the same reference numerals are assigned to the same components as those of the above-described conventional transformer 101 and transformer 101A.
図１（ａ）は本発明の第１実施形態に係るトランス１全体の概略構造を示す斜視図である。図１（ｂ）はこのトランス１の構造例を示す概略断面図である。なお、上述した従来技術のトランス１０１やトランス１０１Ａと同一の構成部材には同一の参照符号を付すこととする。 <First Embodiment>
FIG. 1A is a perspective view showing a schematic structure of the
図１（ａ）および図１（ｂ）に示すように、磁気回路を形成するコアに装着されるボビン１０の楕円筒状の胴部１１の両端に鍔部１２、１４がそれぞれ設けられるとともに、胴部１１の中間にも胴部１１を軸方向に２つの領域に区画するように鍔部１３（本発明の「鍔部」に該当）が設けられている。
As shown in FIGS. 1 (a) and 1 (b), flanges 12 and 14 are respectively provided at both ends of an elliptic cylindrical body 11 of a bobbin 10 attached to a core forming a magnetic circuit. A flange portion 13 (corresponding to “a flange portion” in the present invention) is provided in the middle of the body portion 11 so as to divide the body portion 11 into two regions in the axial direction.
ボビン１０の胴部１１において、１次巻線２１が鍔部１２と鍔部１３との間の領域に捲回されるとともに、２次巻線２２が１次巻線２１と並列となるように鍔部１３と鍔部１４との間の領域に捲回されている。鍔部１３は、１次巻線２１と２次巻線２２との間に位置してこれらを分離するとともに、絶縁に必要な距離（絶縁距離）を確保している。
In the body portion 11 of the bobbin 10, the primary winding 21 is wound around the region between the flange portion 12 and the flange portion 13, and the secondary winding 22 is arranged in parallel with the primary winding 21. It is wound in the area between the heel part 13 and the heel part 14. The flange 13 is located between the primary winding 21 and the secondary winding 22 and separates them, and secures a distance (insulation distance) necessary for insulation.
１次巻線２１および２次巻線２２の少なくとも一方（いずれか一方または両方）が強化絶縁されていてもよい。具体的には、１次巻線２１や２次巻線２２に、例えば３層絶縁線を用いてもよいが、これに限るわけではない。なお、このように強化絶縁されている場合には、１次巻線２１と２次巻線２２との間に上述した絶縁距離を設ける必要はない。
At least one (either one or both) of the primary winding 21 and the secondary winding 22 may be reinforced and insulated. Specifically, for example, a three-layer insulated wire may be used for the primary winding 21 and the secondary winding 22, but the present invention is not limited to this. When reinforced insulation is performed in this way, it is not necessary to provide the above-described insulation distance between the primary winding 21 and the secondary winding 22.
鍔部１２～１４はいずれもボビン１０と同じ樹脂材料で形成されており、その樹脂材料の誘電率εは高い。ただし、鍔部１３は、内側の少なくとも一部が空洞１３ａとなるように（もともとの鍔部１３の壁の一部を削除するように）形成されているので、角環状となっている。鍔部１３の形状は、他にも円環などの環状があり得るが、これらに限るわけではない。また、鍔部１３をボビン１０の胴部１１上に保持する細棒状の鍔保持部１３ｂが下側の１箇所に設けられている。ただし、鍔保持部１３ｂの個数、形状や設ける場所はこれに限らない。
The collar portions 12 to 14 are all made of the same resin material as the bobbin 10, and the dielectric constant ε of the resin material is high. However, since the collar part 13 is formed so that at least a part of the inner side becomes a cavity 13a (so as to remove a part of the wall of the original collar part 13), it has an angular ring shape. The shape of the collar portion 13 may be other annular shapes such as an annular shape, but is not limited thereto. Further, a thin rod-like heel holding portion 13b for holding the heel portion 13 on the body portion 11 of the bobbin 10 is provided at one lower position. However, the number, shape and location of the hook holding portions 13b are not limited to this.
空気の誘電率εは樹脂材料の誘電率εより遙かに低いので、１次巻線２１と２次巻線２２との間の鍔部１３および空洞１３ａの全体としての誘電率εが低下する。
Since the dielectric constant ε of air is much lower than the dielectric constant ε of the resin material, the overall dielectric constant ε of the flange 13 and the cavity 13a between the primary winding 21 and the secondary winding 22 is reduced. .
このような構成を実際にスイッチング周波数が２００ｋＨｚのＤＣ／ＤＣコンバータに使用されるトランスに適用したところ、１次巻線と２次巻線との間の巻線間容量Ｃｐが９．３ｐＦから約２割も低減して７．３ｐＦとなった。これは、コンデンサ低減によるフィルタ効果としては、計算上で－２ｄＢ程度に相当する。
When such a configuration is actually applied to a transformer used in a DC / DC converter having a switching frequency of 200 kHz, the interwinding capacitance Cp between the primary winding and the secondary winding is about 9.3 pF. It decreased by 20% to 7.3 pF. This is equivalent to about −2 dB in terms of calculation as a filter effect due to capacitor reduction.
以上で説明したトランス１によれば、１次巻線２１と２次巻線２２との間の巻線間容量が低減してノイズも低減するが、トランス１自体のサイズが大型化することはない。
According to the transformer 1 described above, the interwinding capacitance between the primary winding 21 and the secondary winding 22 is reduced and noise is also reduced. However, the size of the transformer 1 itself is increased. Absent.
＜第１実施形態の変形例＞
図２（ａ）および図２（ｂ）は、角筒状の胴部を有するボビン１０Ａに四角環状の鍔部１３Ａを保持する鍔保持部１３Ａｂの具体的な設け方を例示する概略図である。 <Modification of First Embodiment>
FIG. 2A and FIG. 2B are schematic views illustrating a specific method of providing a hook holding portion 13Ab that holds a squareannular hook portion 13A on a bobbin 10A having a rectangular tubular body. .
図２（ａ）および図２（ｂ）は、角筒状の胴部を有するボビン１０Ａに四角環状の鍔部１３Ａを保持する鍔保持部１３Ａｂの具体的な設け方を例示する概略図である。 <Modification of First Embodiment>
FIG. 2A and FIG. 2B are schematic views illustrating a specific method of providing a hook holding portion 13Ab that holds a square
ボビン１０Ａに鍔部１３Ａを保持するには、図２（ａ）に示すように、１箇所のみに鍔保持部１３Ａｂを設けてもよいし、図２（ｂ）に示すように、上下左右の計４箇所に鍔保持部１３Ａｂを設けてもよい。ただし、このような個数や設ける場所に限るわけではない。
In order to hold the collar portion 13A on the bobbin 10A, as shown in FIG. 2 (a), the collar holding portion 13Ab may be provided in only one place, or as shown in FIG. You may provide wrinkle holding | maintenance part 13Ab in a total of four places. However, it is not limited to such a number and location.
＜その他の実施形態＞
上述したトランス１を絶縁型コンバータなどの電力変換器に適用してもよい。このような電力変換器によれば、動作時のノイズが少ない電源装置が得られる。 <Other embodiments>
Thetransformer 1 described above may be applied to a power converter such as an insulating converter. According to such a power converter, a power supply device with less noise during operation can be obtained.
上述したトランス１を絶縁型コンバータなどの電力変換器に適用してもよい。このような電力変換器によれば、動作時のノイズが少ない電源装置が得られる。 <Other embodiments>
The
なお、本発明は、その主旨または主要な特徴から逸脱することなく、他のいろいろな形で実施することができる。そのため、上述の各実施形態や各実施例はあらゆる点で単なる例示にすぎず、限定的に解釈してはならない。本発明の範囲は特許請求の範囲によって示すものであって、明細書本文にはなんら拘束されない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。
It should be noted that the present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiments and examples are merely examples in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
この出願は、日本で２０１６年１０月１２日に出願された特願２０１６－２００６９６号に基づく優先権を請求する。その内容はこれに言及することにより、本出願に組み込まれるものである。また、本明細書に引用された文献は、これに言及することにより、その全部が具体的に組み込まれるものである。
This application claims priority based on Japanese Patent Application No. 2016-200766 filed on October 12, 2016 in Japan. The contents of which are hereby incorporated by reference into this application. In addition, the documents cited in the present specification are specifically incorporated in their entirety by referring to them.
１ トランス
１０ ボビン
１０Ａ ボビン
１１ 胴部
１２ 鍔部
１３ 鍔部（本発明の「鍔部」）
１３ａ 空洞
１３ｂ 鍔保持部
１３Ａ 鍔部（本発明の「鍔部」）
１３Ａｂ 鍔保持部
１４ 鍔部
２１ １次巻線
２２ ２次巻線
１０１ トランス（従来技術）
１０１Ａ トランス（従来技術） DESCRIPTION OFSYMBOLS 1 Transformer 10 Bobbin 10A Bobbin 11 trunk | drum 12 collar part 13 collar part ("gutter part" of this invention)
13a Cavity 13b Hedge holding part 13A Hedge part ("gutter part" of the present invention)
13Ab 鍔 holdingportion 14 鍔 portion 21 primary winding 22 secondary winding 101 transformer (conventional technology)
101A transformer (conventional technology)
１０ ボビン
１０Ａ ボビン
１１ 胴部
１２ 鍔部
１３ 鍔部（本発明の「鍔部」）
１３ａ 空洞
１３ｂ 鍔保持部
１３Ａ 鍔部（本発明の「鍔部」）
１３Ａｂ 鍔保持部
１４ 鍔部
２１ １次巻線
２２ ２次巻線
１０１ トランス（従来技術）
１０１Ａ トランス（従来技術） DESCRIPTION OF
13Ab 鍔 holding
101A transformer (conventional technology)
Claims (4)
- 磁気回路を形成するコアに装着されるボビンと、
前記ボビンを軸方向に第１領域および第２領域に区画するとともに、内側の少なくとも一部が空洞である鍔部と、
前記鍔部を前記ボビンに保持する鍔保持部と、
前記ボビンの前記第１領域に捲回された１次巻線と、
前記ボビンの前記第２領域に捲回された２次巻線と
を備えることを特徴とする変圧器。 A bobbin attached to a core forming a magnetic circuit;
The bobbin is divided into a first region and a second region in the axial direction, and at least a part of the inside is a hollow,
A heel holding portion for holding the heel portion on the bobbin;
A primary winding wound around the first region of the bobbin;
A transformer comprising: a secondary winding wound around the second region of the bobbin. - 請求項１に記載の変圧器において、
前記空洞は、前記鍔部の前記内側で、前記鍔部を前記ボビンの胴部に保持する少なくとも１つの細棒状の前記鍔保持部を除いた部分として形成されていることを特徴とする変圧器。 The transformer according to claim 1,
The transformer is formed as a portion excluding the at least one thin rod-shaped hook holding part that holds the hook part on the body part of the bobbin on the inner side of the hook part. . - 請求項１または２に記載の変圧器において、
前記１次巻線および前記２次巻線の少なくとも一方が強化絶縁されていることを特徴とする変圧器。 The transformer according to claim 1 or 2,
A transformer, wherein at least one of the primary winding and the secondary winding is reinforced and insulated. - 請求項１～３のいずれか１項に記載の変圧器を備えた電力変換器。 A power converter comprising the transformer according to any one of claims 1 to 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-200696 | 2016-10-12 | ||
| JP2016200696A JP2018064011A (en) | 2016-10-12 | 2016-10-12 | Transformer and power converter having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018070200A1 true WO2018070200A1 (en) | 2018-04-19 |
Family
ID=61905316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2017/033992 WO2018070200A1 (en) | 2016-10-12 | 2017-09-20 | Transformer and power converter comprising same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2018064011A (en) |
| WO (1) | WO2018070200A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134718U (en) * | 1984-07-31 | 1986-03-03 | 東芝ライテック株式会社 | Bobbin for transformer |
| JPS6390818U (en) * | 1986-12-02 | 1988-06-13 | ||
| JPH05101941A (en) * | 1991-10-04 | 1993-04-23 | Sony Corp | Bobbin for switching regulator transformer |
| JP2008153293A (en) * | 2006-12-14 | 2008-07-03 | Komatsu Ltd | Transformer |
-
2016
- 2016-10-12 JP JP2016200696A patent/JP2018064011A/en active Pending
-
2017
- 2017-09-20 WO PCT/JP2017/033992 patent/WO2018070200A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134718U (en) * | 1984-07-31 | 1986-03-03 | 東芝ライテック株式会社 | Bobbin for transformer |
| JPS6390818U (en) * | 1986-12-02 | 1988-06-13 | ||
| JPH05101941A (en) * | 1991-10-04 | 1993-04-23 | Sony Corp | Bobbin for switching regulator transformer |
| JP2008153293A (en) * | 2006-12-14 | 2008-07-03 | Komatsu Ltd | Transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018064011A (en) | 2018-04-19 |
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