JPH05101943A - Three-phase wound core - Google Patents
Three-phase wound coreInfo
- Publication number
- JPH05101943A JPH05101943A JP3102489A JP10248991A JPH05101943A JP H05101943 A JPH05101943 A JP H05101943A JP 3102489 A JP3102489 A JP 3102489A JP 10248991 A JP10248991 A JP 10248991A JP H05101943 A JPH05101943 A JP H05101943A
- Authority
- JP
- Japan
- Prior art keywords
- silicon steel
- core
- wound
- winding
- steel sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Soft Magnetic Materials (AREA)
Abstract
Description
［発明の目的］ [Object of the Invention]
【０００１】[0001]
【産業上の利用分野】本発明は、低損失で低騒音特性を
有するインバータ電源用変圧器、整流器用変圧器などに
用いられる三相巻鉄心に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-phase winding iron core used for a transformer for an inverter power source, a transformer for a rectifier, etc., which has low loss and low noise characteristics.
【０００２】[0002]
【従来の技術】最近のエレクトロニクス技術の進歩によ
り、インバータ電源を用いた機器たとえばＵＰＳ電源な
どの使用が大幅に増加している。2. Description of the Related Art Recent advances in electronics technology have significantly increased the use of devices using an inverter power supply, such as UPS power supplies.
【０００３】この種インバータ電源用変圧器は一般に基
本波成分が５０〜６０Ｈｚであるが、スイッチング素子
によって数ｋＨｚ〜１０数ｋＨｚの高調波を含有するた
め、機器の騒音が問題となっている。In this type of inverter power supply transformer, the fundamental wave component is generally 50 to 60 Hz, but since the switching element contains harmonics of several kHz to several tens of kHz, the noise of the equipment becomes a problem.
【０００４】従来、インバータ電源用変圧器は、図６に
示したように方向性けい素鋼板を巻回した２個の内側巻
鉄心１と１個の外側巻鉄心２を組合せた三相巻鉄心を用
いて各脚にコイル４を巻回して構成していた。しかしな
がら方向性けい素鋼板を用いた巻鉄心変圧器は方向性け
い素鋼板の磁気歪みが使用磁束密度領域で約２×１０-6
と大きく、インバータのスイッチング周波数による高調
波によって騒音が大きくなる問題があった。特に、最近
ではＵＰＳ電源などは室内に設置する傾向にあるため、
ますます騒音低減が要望されるようになってきた。Conventionally, a transformer for an inverter power supply is a three-phase winding core in which two inner winding cores 1 and one outer winding core 2 wound with a grain-oriented silicon steel plate are combined as shown in FIG. Was used to wind the coil 4 around each leg. However, in a wound core transformer using a grain-oriented silicon steel sheet, the magnetostriction of the grain-oriented silicon steel sheet is about 2 × 10 -6 in the used magnetic flux density region.
However, there is a problem that noise is increased due to harmonics due to the switching frequency of the inverter. In particular, recently, UPS power supplies tend to be installed indoors,
There is an increasing demand for noise reduction.
【０００５】一方、変圧器などの誘導機器の用いられる
鉄心に従来からの３％方向性けい素鋼板にかわり、磁気
歪みが小さく優れた磁気特性を有する６．５％けい素鋼
板を用いることが検討されている。この６．５％けい素
鋼板は磁気歪みがほぼ零で鉄損も少なくなることが古く
から知られていたが、けい素の含有量が増すにつれて脆
くなるために、圧延による製造が困難とされていた。し
かし最近になって脆性材料の圧延技術の向上やＣＶＤ法
（化学気相蒸着法）の進歩により、この種６．５％けい
素鋼板が開発され実用化されるようになってきた。６．
５％けい素鋼板は磁気歪みが０．３×１０-6程度である
ため、変圧器の騒音低減に有利な材料である。On the other hand, instead of a conventional 3% grain-oriented silicon steel sheet, a 6.5% silicon steel sheet having a small magnetic strain and excellent magnetic properties can be used for an iron core used in an induction device such as a transformer. Is being considered. It has long been known that this 6.5% silicon steel sheet has almost zero magnetic strain and less iron loss, but it is considered to be difficult to manufacture by rolling because it becomes brittle as the content of silicon increases. Was there. However, recently, with the improvement of the rolling technique for brittle materials and the progress of the CVD method (chemical vapor deposition method), a 6.5% silicon steel sheet of this kind has been developed and put into practical use. 6.
The 5% silicon steel sheet has a magnetostriction of about 0.3 × 10 −6 , and is therefore an advantageous material for noise reduction of a transformer.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、高磁束
密度領域のＢ−Ｈ特性が悪いために商用周波数で用いる
機器では励磁電流が増大する欠点がある。また、焼鈍温
度を低くして６．５％けい素鋼板を製造することによ
り、高磁束密度領域でのＢ−Ｈ特性を改善したものもあ
るが、この場合には鉄損が増大する問題がある。このた
め、商用周波数の変圧器では６．５％けい素鋼板を用い
ても、従来のけい素を３％含有する方向性けい素鋼板よ
り磁束密度を下げて設計する必要があり、機器の小形・
軽量化のネックとなっていた。However, since the BH characteristic in the high magnetic flux density region is poor, there is a drawback that the exciting current increases in a device used at a commercial frequency. In addition, there is also one in which the BH characteristic in the high magnetic flux density region is improved by manufacturing a 6.5% silicon steel sheet with a lower annealing temperature, but in this case, there is a problem that iron loss increases. is there. Therefore, even if a 6.5% silicon steel plate is used in a commercial frequency transformer, it is necessary to design the magnetic flux density lower than that of the conventional grain-oriented silicon steel plate containing 3% silicon.・
It was a bottleneck for weight reduction.
【０００７】本発明は上述の問題点を解決するためにな
されたもので、磁気特性を低下させることなく低騒音に
構成できるインバータ電源用などに適した三相巻鉄心を
提供することを目的とする。 ［発明の構成］The present invention has been made to solve the above problems, and an object of the present invention is to provide a three-phase winding iron core suitable for an inverter power supply or the like which can be constructed with low noise without deteriorating the magnetic characteristics. To do. [Constitution of Invention]
【０００８】[0008]
【課題を解決するための手段】請求項１に記載の本発明
の三相巻鉄心は、外側巻鉄心と、この外側巻鉄心の内側
に並べて配置された２個の内側巻鉄心とからなる三相巻
鉄心において、各巻鉄心を、方向性けい素鋼板を巻回し
て内周部分に配置した第１の巻回体と、該方向性けい素
鋼板より低磁歪の磁性材料を巻回して外周部分に配置し
た第２の巻回体とを組合わせて構成したことを特徴とす
る。A three-phase winding core according to the present invention as defined in claim 1 comprises an outer winding core and two inner winding cores arranged side by side inside the outer winding core. In the phase-wound core, a first winding body in which each winding core is wound around a grain-oriented silicon steel plate and arranged in an inner peripheral portion, and a magnetic material having a magnetostriction lower than that of the grain-oriented silicon steel sheet is wound around an outer peripheral portion. It is characterized in that it is configured by combining with the second wound body arranged in.
【０００９】請求項２に記載の本発明の三相巻鉄心は、
外側巻鉄心と、この外側巻鉄心の内側に並べて配置され
た２個の内側巻鉄心とからなる三相巻鉄心において、外
側巻鉄心を、方向性けい素鋼板を巻回して内周部分に配
置した第１の巻回体と、該方向性けい素鋼板より低磁歪
の磁性材料を巻回して外周部分に配置した第２の巻回体
とを組合わせて構成し、内側巻鉄心を方向性けい素鋼板
のみを巻回して構成したことを特徴とする。The three-phase wound core of the present invention according to claim 2 is
In a three-phase winding core consisting of an outer winding core and two inner winding cores arranged side by side inside the outer winding core, the outer winding core is wound on a grain-oriented silicon steel plate and arranged on the inner peripheral portion. The first wound body and the second wound body in which a magnetic material having a lower magnetostriction than the grain-oriented silicon steel sheet is wound and arranged on the outer peripheral portion are combined, and the inner wound core is oriented. It is characterized in that it is constructed by winding only a silicon steel sheet.
【００１０】[0010]
【作用】このような鉄心構成では６．５％けい素鋼板の
ように脆くてある曲げ曲率以下の小さな曲率では巻回で
きない材料でも、内周部分に巻回した方向性けい素鋼板
による第１の巻回体によってコーナ部の巻回曲率が大き
くなるために、その外周に低磁歪の磁性材料を容易に巻
回できることになる。With such an iron core structure, even a material which cannot be wound with a small curvature less than the bending curvature which is brittle like a 6.5% silicon steel sheet is made of the grain-oriented silicon steel sheet wound around the inner circumference. Since the winding curvature of the corner portion is increased by the winding body, the magnetic material having a low magnetostriction can be easily wound around the outer circumference thereof.
【００１１】一方、このような巻鉄心を例えばインバー
タ電源用変圧器などに適用した場合、基本波成分である
５０Ｈｚや６０Ｈｚの磁束成分は、この周波数域で透磁
率の高い方向性けい素鋼板に多く流れ、スイッチングに
よる２〜１０ｋＨｚの高調波成分については、この周波
数域で透磁率の高い６．５％けい素鋼板のような低磁歪
の磁性材料に多く流れることになる。図３及び図４に低
磁歪の磁性材料として６．５％けい素鋼板を用いた鉄心
と方向性けい素鋼板を用いた鉄心の鉄損及び励磁容量の
特性比較を示す。On the other hand, when such a wound iron core is applied to, for example, a transformer for an inverter power supply, the magnetic flux components of 50 Hz and 60 Hz, which are fundamental wave components, are applied to the grain-oriented silicon steel sheet having high magnetic permeability in this frequency range. A large amount of the harmonic components of 2 to 10 kHz caused by switching flow to a low magnetostrictive magnetic material such as a 6.5% silicon steel plate having a high magnetic permeability in this frequency range. FIGS. 3 and 4 show a comparison of characteristics of core loss and exciting capacity of an iron core using a 6.5% silicon steel sheet as a low magnetostrictive magnetic material and an iron core using a grain-oriented silicon steel sheet.
【００１２】この図より明らかなように周波数が５０Ｈ
ｚでは鉄損・励磁容量とも６．５％けい素鋼板鉄心の方
が悪く、特に励磁容量は磁束密度が１．０Ｔを越える領
域より急激に悪化している。しかし周波数の増大に伴な
ってその特性差は小さくなり、４００Ｈｚでほぼ両鉄心
が同じ特性となり、さらに高周波になると６．５％けい
素鋼板鉄心の方が鉄損・励磁容量とも良い特性を示して
いる。これは６．５％けい素鋼板の固有抵抗が方向性け
い素鋼板より大きいことから、高周波になるとうず電流
損が減少し、透磁率も大きくなるためである。なお、両
鉄心の組合せ特性では、ほぼ各鉄心特性の平均的な特性
を示している。As is clear from this figure, the frequency is 50H.
In the case of z, both the iron loss and the exciting capacity are worse for the 6.5% silicon steel sheet iron core, and especially the exciting capacity is sharply deteriorated from the region where the magnetic flux density exceeds 1.0T. However, as the frequency increases, the difference in characteristics becomes smaller, and at 400 Hz both iron cores have almost the same characteristics, and at higher frequencies, the 6.5% silicon steel sheet iron core shows better characteristics in terms of core loss and excitation capacity. ing. This is because the 6.5% silicon steel sheet has a larger specific resistance than the grain-oriented silicon steel sheet, so that the eddy current loss decreases and the magnetic permeability also increases at high frequencies. The combined characteristics of both cores show almost the average characteristics of each core.
【００１３】一方、騒音特性は図５に示すように６．５
％けい素鋼板鉄心の方が方向性けい素鋼板鉄心より全周
波数領域で低減しており、かつ周波数の増大に伴なって
両鉄心の騒音値はより大きな差となっている。On the other hand, the noise characteristic is 6.5 as shown in FIG.
% The silicon steel sheet iron core has a reduction in the whole frequency range compared to the grain-oriented silicon steel sheet iron core, and the noise values of both iron cores have a larger difference as the frequency increases.
【００１４】すなわち、例えばインバータ電源用変圧器
では、５０Ｈｚや６０Ｈｚの基本波に数ｋＨｚの高周波
を含有した磁束波形であるから、基本波成分を方向性け
い素鋼板で大部分を受けもたせ、高調波成分を６．５％
けい素鋼板のような低磁歪の磁性材料で受けもたせる鉄
心構成にすることによって、磁気特性の悪化を抑えて騒
音を大幅に低減することが可能であることを見い出した
のである。That is, for example, in a transformer for an inverter power supply, since the magnetic flux waveform has a fundamental wave of 50 Hz or 60 Hz and a high frequency of several kHz, most of the fundamental wave component is received by a grain-oriented silicon steel plate, and a harmonic wave is generated. Wave component 6.5%
It has been found that it is possible to suppress the deterioration of the magnetic characteristics and to significantly reduce the noise by adopting an iron core structure that can be supported by a low magnetostrictive magnetic material such as a silicon steel plate.
【００１５】尚、本発明の鉄心構成のように低磁歪の磁
性材料の巻回体を巻鉄心の外周部分に配置することによ
って、騒音発生の放射面の大きい部分に低磁歪の磁性材
料が配置された構成となり、より低騒音の効果が大きく
なる特徴もある。By disposing a winding body of a low-magnetostriction magnetic material on the outer peripheral portion of the winding iron core as in the iron core structure of the present invention, the low-magnetostriction magnetic material is arranged in a large noise emission surface. There is also a characteristic that the effect of lowering noise is further enhanced.
【００１６】[0016]
【実施例】本発明の一実施例を図１を用いて説明する。EXAMPLE An example of the present invention will be described with reference to FIG.
【００１７】図において、フープ状の方向性けい素鋼板
を一定積厚まで巻回して第１の巻回体１１を形成する。
次にこの第１の巻回体１１の外周に低磁歪の磁性材料で
あるフープ状の６．５％けい素鋼板を規定寸法まで巻回
して第２の巻回体１２を形成し、これら内周部分に配置
した第１の巻回体１１と外周部分に配置した第２の巻回
体１２により内側巻鉄心１３，１３を形成する。In the figure, a hoop-shaped grain-oriented silicon steel plate is wound to a certain stack thickness to form a first wound body 11.
Next, a hoop-shaped 6.5% silicon steel sheet, which is a magnetic material having a low magnetostriction, is wound around the outer periphery of the first wound body 11 to a specified size to form a second wound body 12, and The inner winding cores 13 and 13 are formed by the first winding body 11 arranged in the peripheral portion and the second winding body 12 arranged in the outer peripheral portion.
【００１８】そしてこの内側巻鉄心１３，１３を２個並
べた外周に内側巻鉄心と同様に内周部分に方向性けい素
鋼板を巻回して第１の巻回体１４を配置し、その外周に
６．５％けい素鋼板を巻回して第２の巻回体１５を配置
して外側巻鉄心１６を形成する。この場合、各巻鉄心１
３，１６において外周部分に配置した６．５％けい素鋼
板からなる第２の巻回体１２，１５の断面積はそれぞれ
の巻鉄心全断面積の１０〜５０％に設定してある。尚、
各巻鉄心１３，１６は方向性けい素鋼板からなる第１の
巻回体１１，１４と６．５％けい素鋼板からなる第２の
巻回体１２，１５を別々に巻回形成して、後から組合せ
て構成してもよい。また図１では各巻鉄心１３，１６と
して鋼板１枚毎に１箇所の切断部１７を有しその切断部
１７を一層毎に位置をずらせたラップジョイントコアと
しているが、巻鉄心の脚中央部で一直線上に切断するＣ
カットコアとすることも可能である。４はコイルであ
る。このような構成の三相巻鉄心では、各巻鉄心１３，
１６の全断面積に対して、方向性けい素鋼板１１を半分
以上の割合（５０〜９０％）で使用しているため、６．
５％けい素鋼板１４の欠点である商用周波数における高
磁束密度領域でのＢ−Ｈ特性の悪化を改善することがで
き、しかも鉄損も６．５％けい素鋼板単独で形成した鉄
心より良くなる。これは方向性けい素鋼板と６．５％け
い素鋼板との組合せ鉄心とすることによって、商用周波
数域で透磁率の高い方向性けい素鋼板に磁束の多くが流
れるためである。Then, a grain-oriented silicon steel plate is wound around the inner circumference of the outer circumference of the two inner wound cores 13 and 13 arranged in the same manner as the inner wound iron core to arrange the first wound body 14, and the outer circumference thereof. A 6.5% silicon steel sheet is wound around the second winding body 15 and the outer wound iron core 16 is formed. In this case, each winding core 1
The cross-sectional areas of the second wound bodies 12 and 15 made of a 6.5% silicon steel plate arranged in the outer peripheral portions of the wound cores 3 and 16 are set to 10 to 50% of the total cross-sectional areas of the respective wound cores. still,
Each of the winding cores 13 and 16 is formed by separately winding first winding bodies 11 and 14 made of grain-oriented silicon steel sheet and second winding bodies 12 and 15 made of 6.5% silicon steel sheet. It may be configured by combining later. Further, in FIG. 1, the wound cores 13 and 16 each have one cut portion 17 for each steel plate, and the cut portion 17 is a lap joint core that is displaced for each layer. C cut along a straight line
It is also possible to use a cut core. 4 is a coil. In the three-phase winding core having such a configuration, each winding core 13,
Since the grain-oriented silicon steel sheet 11 is used at a ratio of 50% to 90% in total with respect to the total cross-sectional area of 16, 6.
It is possible to improve the deterioration of the BH characteristics in the high magnetic flux density region at the commercial frequency, which is a drawback of the 5% silicon steel sheet 14, and the iron loss is better than the iron core formed by the 6.5% silicon steel sheet alone. Become. This is because a large amount of magnetic flux flows through the grain-oriented silicon steel sheet having a high magnetic permeability in the commercial frequency range by using the combined core of the grain-oriented silicon steel sheet and the 6.5% silicon steel sheet.
【００１９】一方、インバータのスイッチング周波数に
よる高調波成分（約２〜１０ｋＨｚ）については、高周
波域で透磁率の高い６．５％けい素鋼板に磁束成分の多
くが流れることになり、インバータ電源用変圧器として
優れた磁気特性を示す。On the other hand, as for the harmonic component (about 2 to 10 kHz) due to the switching frequency of the inverter, most of the magnetic flux component flows in the 6.5% silicon steel plate having a high magnetic permeability in the high frequency region, which is used for the inverter power supply. It has excellent magnetic properties as a transformer.
【００２０】騒音については特に高調波による騒音増大
が問題となるが、６．５％けい素鋼板の磁気歪みは０．
３×１０-6程度であり、方向性けい素鋼板の約２×１０
-6に対して、１／１０程度と非常に小さいため、大幅に
騒音を低減できる。 表１にはインバータ電源用変圧器
の騒音特性の一例を示す。With respect to noise, the increase in noise due to harmonics is a particular problem, but the magnetostriction of a 6.5% silicon steel sheet is 0.
3 × 10 −6, which is about 2 × 10 of grain-oriented silicon steel sheet
Compared with -6 , it is about 1/10, which is very small, so noise can be significantly reduced. Table 1 shows an example of noise characteristics of the inverter power supply transformer.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１より、インバータ電源用変圧器の騒音
は従来の方向性けい素鋼板のみの鉄心に対して、本実施
例による組合せ巻鉄心では磁束密度１．５Ｔにおいて５
〜８ｄＢ（Ａ）低減していることがわかる。これに対し
て、全鉄心断面積に対する６．５％けい素鋼板の比率が
５％のものは騒音低減の効果は少ない。尚、全鉄心断面
積に対する６．５％けい素鋼板の比率が５０％のものは
６．５％けい素鋼板のみの鉄心と比べて騒音がほぼ同一
であるので、これ以上６．５％けい素鋼板の割合を増加
させても騒音低減の効果は少なく、逆に鉄損や励磁電流
などの磁気特性が悪化するため好ましくない。From Table 1, it can be seen that the noise of the transformer for the inverter power supply is 5 when the magnetic flux density is 1.5 T in the combined wound core according to the present embodiment, as compared with the conventional iron core made of only grain-oriented silicon steel.
It can be seen that it is reduced by ~ 8 dB (A). On the other hand, when the ratio of the 6.5% silicon steel plate to the total iron core cross-sectional area is 5%, the noise reduction effect is small. It should be noted that, when the ratio of the 6.5% silicon steel plate to the total iron core cross-sectional area is 50%, the noise is almost the same as that of the iron core made of only the 6.5% silicon steel plate. Even if the ratio of the raw steel sheets is increased, the effect of noise reduction is small, and conversely, magnetic properties such as iron loss and exciting current are deteriorated, which is not preferable.
【００２３】上記実施例では、６．５％けい素鋼板の巻
鉄心を方向性けい素鋼板の巻鉄心の外周に巻回した構成
であるため、鉄心コーナ部の曲げ曲率は大きくて良く、
比較的脆くて小さな曲げ曲率では巻回できない６．５％
けい素鋼板でも容易に巻回して巻鉄心を形成できる。In the above embodiment, since the winding core of the 6.5% silicon steel plate is wound around the outer periphery of the winding core of the grain-oriented silicon steel plate, the bending curvature of the core corner portion may be large,
6.5%, which is relatively brittle and cannot be wound with a small bending curvature
Even a silicon steel sheet can be easily wound to form a wound iron core.
【００２４】また、６．５％けい素鋼板からなる第１の
巻回体１１，１４は組合せ巻鉄心１３，１６の外周部分
に配置された構成となっているため、騒音発生の放射面
の大きい外周部分に磁気歪みの小さい６．５％けい素鋼
板が配置されていることになり、騒音低減効果が大きく
得られる。さらに、変圧器の振動も大幅に低減できる効
果がある。Further, since the first wound bodies 11 and 14 made of 6.5% silicon steel plate are arranged on the outer peripheral portion of the combined wound iron cores 13 and 16, the radiation surface of the noise generation is Since the 6.5% silicon steel sheet having a small magnetic strain is arranged on the large outer peripheral portion, a large noise reduction effect can be obtained. Furthermore, the vibration of the transformer can be significantly reduced.
【００２５】このように方向性けい素鋼板と６．５％け
い素鋼板の組合せ鉄心とすることによって、磁気特性の
悪化を軽減し、騒音および振動の非常に小さいインバー
タ電源用三相変圧器巻鉄心を得ることができる。By using the combination core of the grain-oriented silicon steel sheet and the 6.5% silicon steel sheet in this manner, deterioration of magnetic characteristics is reduced, and a three-phase transformer winding for an inverter power source with very small noise and vibration is wound. You can get an iron core.
【００２６】なお、本鉄心はインバータ電源用変圧器に
限らず、整流器用変圧器など基本波（５０Ｈｚや６０Ｈ
ｚ）に高調波が重畳する機器の鉄心に有効であることは
勿論である。The iron core is not limited to a transformer for an inverter power supply, but a transformer for a rectifier such as a fundamental wave (50 Hz or 60 H).
Of course, it is effective for the iron core of equipment in which harmonics are superimposed on z).
【００２７】また他の実施例として図２に示すように、
内側巻鉄心２３，２３は方向性けい素鋼板を巻回して形
成し、外側巻鉄心１６のみ、内周部分に方向性けい素鋼
板を巻回した第１の巻回体１４と、外周部分に６．５％
けい素鋼板を巻回した第２の巻回体１５を配置した組合
せ巻鉄心とすることもできる。この場合、外側巻鉄心１
６の全断面積（方向性けい素鋼板と６．５％けい素鋼板
の合計断面積）は、内側巻鉄心２３の全体断面積より１
０％大きく設定する。これは６．５％けい素鋼板の飽和
磁束密度が方向性けい素鋼板より１０％低いためであ
り、このように構成することにより上記実施例とほぼ同
様の騒音低減効果が得られる。As another embodiment, as shown in FIG.
The inner winding cores 23, 23 are formed by winding a grain-oriented silicon steel sheet, and only the outer winding core 16 has a first winding body 14 in which a grain-oriented silicon steel sheet is wound around the inner peripheral portion and an outer periphery portion. 6.5%
It is also possible to use a combined wound core in which the second wound body 15 wound with a silicon steel plate is arranged. In this case, the outer winding core 1
The total cross-sectional area of 6 (total cross-sectional area of grain-oriented silicon steel sheet and 6.5% silicon steel sheet) is 1 from the total cross-sectional area of the inner winding core 23.
Set 0% larger. This is because the saturation magnetic flux density of the 6.5% silicon steel sheet is 10% lower than that of the grain-oriented silicon steel sheet. With this structure, the noise reduction effect similar to that of the above-mentioned embodiment can be obtained.
【００２８】[0028]
【発明の効果】以上説明したように、本発明による三相
巻鉄心によれば、方向性けい素鋼板と６．５％けい素鋼
板の組合せ鉄心としたことにより、磁気特性を悪化させ
ることなく、騒音を大幅に低減できる効果が得られる。As described above, according to the three-phase wound core according to the present invention, since the combination core of the grain-oriented silicon steel sheet and the 6.5% silicon steel sheet is used, the magnetic characteristics are not deteriorated. The effect of significantly reducing noise can be obtained.
【図１】（ａ）は本発明による三相巻鉄心の一実施例を
示す正面図、（ｂ）は側面図FIG. 1A is a front view showing an embodiment of a three-phase winding core according to the present invention, and FIG. 1B is a side view.
【図２】（ａ）は本発明の他の実施例による三相巻鉄心
の正面図、（ｂ）は側面図FIG. 2A is a front view of a three-phase wound core according to another embodiment of the present invention, and FIG.
【図３】６．５％けい素鋼板および方向性けい素鋼板を
用いた鉄心の鉄損特性比較を示す説明図FIG. 3 is an explanatory diagram showing a comparison of iron loss characteristics of iron cores using 6.5% silicon steel sheet and grain-oriented silicon steel sheet.
【図４】６．５％けい素鋼板および方向性けい素鋼板を
用いた鉄心の励磁容量比較を示す説明図FIG. 4 is an explanatory diagram showing a comparison of exciting capacities of iron cores using 6.5% silicon steel sheets and grain-oriented silicon steel sheets.
【図５】６．５％けい素鋼板および方向性けい素鋼板を
用いた鉄心の騒音比較を示す説明図FIG. 5 is an explanatory diagram showing a noise comparison of iron cores using a 6.5% silicon steel sheet and a grain-oriented silicon steel sheet.
【図６】従来のインバータ電源用変圧器を示す正面図FIG. 6 is a front view showing a conventional inverter power supply transformer.
１１，１４は方向性けい素鋼板からなる第１の巻回体、
１２，１５は６．５％けい素鋼板からなる第２の巻回
体、１３，２３は内側巻鉄心、１６は外側巻鉄心であ
る。Reference numerals 11 and 14 are first wound bodies made of grain-oriented silicon steel sheet,
12 and 15 are second wound bodies made of 6.5% silicon steel sheet, 13 and 23 are inner wound cores, and 16 is an outer wound core.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年９月２５日[Submission date] September 25, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明による三相巻鉄心の一実施例を示す正面
図FIG. 1 is a front view showing an embodiment of a three-phase winding core according to the present invention.
【図２】本発明の他の実施例による三相巻鉄心の正面図FIG. 2 is a front view of a three-phase winding core according to another embodiment of the present invention.
【図３】６．５％けい素鋼板を用いた鉄心の鉄損特性比
較を示す説明図FIG. 3 is an explanatory diagram showing a comparison of iron loss characteristics of iron cores using 6.5% silicon steel sheets.
【図４】６．５％けい素鋼板および方向性けい素鋼板を
用いた鉄心の励磁容量比較を示す説明図FIG. 4 is an explanatory diagram showing a comparison of exciting capacities of iron cores using 6.5% silicon steel sheets and grain-oriented silicon steel sheets.
【図５】６．５％けい素鋼板および方向性けい素鋼板を
用いた鉄心の騒音比較を示す説明図FIG. 5 is an explanatory diagram showing a noise comparison of iron cores using a 6.5% silicon steel sheet and a grain-oriented silicon steel sheet.
【図６】従来のインバータ電源用変圧器を示す正面図FIG. 6 is a front view showing a conventional inverter power supply transformer.
【符号の説明】 １１，１４は方向性けい素鋼板からなる第１の巻回体、
１２，１５は６．５％けい素鋼板からなる第２の巻回
体、１３，２３は内側巻鉄心、１６は外側巻鉄心であ
る。[Explanation of reference numerals] 11, 14 are first wound bodies made of grain-oriented silicon steel sheet,
12 and 15 are second wound bodies made of 6.5% silicon steel sheet, 13 and 23 are inner wound cores, and 16 is an outer wound core.
Claims (2)
並べて配置された２個の内側巻鉄心とからなる三相巻鉄
心において、前記各巻鉄心を、方向性けい素鋼板を巻回
して内周部分に配置した第１の巻回体と、該方向性けい
素鋼板より低磁歪の磁性材料を巻回して外周部分に配置
した第２の巻回体とを組合わせて構成したことを特徴と
する三相巻鉄心。1. A three-phase winding core comprising an outer winding core and two inner winding cores arranged side by side inside the outer winding core, wherein each winding core is wound with a grain-oriented silicon steel plate. It is configured by combining a first wound body arranged on the inner peripheral portion and a second wound body arranged on the outer peripheral portion by winding a magnetic material having a lower magnetostriction than the grain-oriented silicon steel sheet. A characteristic three-phase winding iron core.
並べて配置された２個の内側巻鉄心とからなる三相巻鉄
心において、前記外側巻鉄心を、方向性けい素鋼板を巻
回して内周部分に配置した第１の巻回体と、該方向性け
い素鋼板より低磁歪の磁性材料を巻回して外周部分に配
置した第２の巻回体とを組合わせて構成し、前記内側巻
鉄心を方向性けい素鋼板のみを巻回して構成したことを
特徴とする三相巻鉄心。2. A three-phase winding core comprising an outer winding core and two inner winding cores arranged side by side inside the outer winding core, wherein the outer winding core is wound with a grain-oriented silicon steel plate. And a second winding body arranged on the outer peripheral portion by winding a magnetic material having a lower magnetostriction than the grain-oriented silicon steel plate, and a first winding body arranged on the inner peripheral portion. A three-phase wound core, wherein the inner wound core is formed by winding only a grain-oriented silicon steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3102489A JPH05101943A (en) | 1991-05-08 | 1991-05-08 | Three-phase wound core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3102489A JPH05101943A (en) | 1991-05-08 | 1991-05-08 | Three-phase wound core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05101943A true JPH05101943A (en) | 1993-04-23 |
Family
ID=14328849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3102489A Pending JPH05101943A (en) | 1991-05-08 | 1991-05-08 | Three-phase wound core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05101943A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007180135A (en) * | 2005-12-27 | 2007-07-12 | Hitachi Industrial Equipment Systems Co Ltd | Transformer |
| US7675398B2 (en) | 2005-07-08 | 2010-03-09 | Hitachi Industrial Equipment Systems Co., Ltd. | Iron core for stationary apparatus and stationary apparatus |
| JP2010087536A (en) * | 2005-07-08 | 2010-04-15 | Hitachi Industrial Equipment Systems Co Ltd | Three-phase tripod iron core |
| KR20170087943A (en) * | 2014-11-25 | 2017-07-31 | 아뻬랑 | Basic module for magnetic core of an electrical transformer, magnetic core comprising said basic module, method for manufacturing said magnetic core, and transformer comprising said magnetic core |
| CN109155597A (en) * | 2016-04-13 | 2019-01-04 | 罗姆股份有限公司 | Ac power supply apparatus |
-
1991
- 1991-05-08 JP JP3102489A patent/JPH05101943A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7675398B2 (en) | 2005-07-08 | 2010-03-09 | Hitachi Industrial Equipment Systems Co., Ltd. | Iron core for stationary apparatus and stationary apparatus |
| JP2010087536A (en) * | 2005-07-08 | 2010-04-15 | Hitachi Industrial Equipment Systems Co Ltd | Three-phase tripod iron core |
| US8258912B2 (en) | 2005-07-08 | 2012-09-04 | Hitachi Industrial Equipment Systems Co., Ltd. | Iron core for stationary apparatus and stationary apparatus |
| JP2012169666A (en) * | 2005-07-08 | 2012-09-06 | Hitachi Industrial Equipment Systems Co Ltd | Wound iron core for static apparatus, and static apparatus with the same |
| JP2007180135A (en) * | 2005-12-27 | 2007-07-12 | Hitachi Industrial Equipment Systems Co Ltd | Transformer |
| KR20170087943A (en) * | 2014-11-25 | 2017-07-31 | 아뻬랑 | Basic module for magnetic core of an electrical transformer, magnetic core comprising said basic module, method for manufacturing said magnetic core, and transformer comprising said magnetic core |
| JP2018502446A (en) * | 2014-11-25 | 2018-01-25 | アペラン | Basic module for magnetic core of transformer, magnetic core including the basic module, method for manufacturing the magnetic core, and transformer including the magnetic core |
| CN107735843A (en) * | 2014-11-25 | 2018-02-23 | 艾普伦 | For the magnetic core of the infrastructure component of power transformer magnetic core, including the infrastructure component, the method for the magnetic core and the transformer including the magnetic core are manufactured |
| US10515756B2 (en) | 2014-11-25 | 2019-12-24 | Aperam | Basic module for magnetic core of an electrical transformer, magnetic core comprising said basic module, method for manufacturing said magnetic core, and transformer comprising said magnetic core |
| CN107735843B (en) * | 2014-11-25 | 2021-01-05 | 艾普伦 | Base assembly for a magnetic core of a power transformer, magnetic core comprising such a base assembly, method for manufacturing such a magnetic core and transformer comprising such a magnetic core |
| CN109155597A (en) * | 2016-04-13 | 2019-01-04 | 罗姆股份有限公司 | Ac power supply apparatus |
| US10886859B2 (en) | 2016-04-13 | 2021-01-05 | Rohm Co., Ltd. | Alternating-current power supply device with windings wound in different directions |
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