JPS6227029Y2 - - Google Patents
Info
- Publication number
- JPS6227029Y2 JPS6227029Y2 JP4213682U JP4213682U JPS6227029Y2 JP S6227029 Y2 JPS6227029 Y2 JP S6227029Y2 JP 4213682 U JP4213682 U JP 4213682U JP 4213682 U JP4213682 U JP 4213682U JP S6227029 Y2 JPS6227029 Y2 JP S6227029Y2
- Authority
- JP
- Japan
- Prior art keywords
- common mode
- control circuit
- power supply
- main circuit
- supply device
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 235000013351 cheese Nutrition 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Description
【考案の詳細な説明】
本考案は主回路及び制御回路に夫々主回路用コ
モンモードチヨーク及び制御回路用コモンモード
チヨークを有する電源装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply device having a common mode choke for the main circuit and a common mode choke for the control circuit in the main circuit and the control circuit, respectively.
従来よりスイツチングレギユレータ等の電源装
置においては、トランジスタ、出力整流用ダイオ
ード等のスイツチング動作により多大なノイズが
発生し、該ノイズを入力側や出力側に与えない為
にノーマルモードノイズ対策及びコモンモードノ
イズ対策が行われてきた。 Conventionally, in power supplies such as switching regulators, a large amount of noise is generated due to the switching operation of transistors, output rectifier diodes, etc., and normal mode noise countermeasures and countermeasures have been taken to prevent this noise from being applied to the input and output sides. Countermeasures against common mode noise have been taken.
第１図に前述のようなノーマルモードノイズ対
策及びコモンモードノイズ対策が施された従来の
電源装置を示す。同図において、１は入力直流電
源、２は入力ノイズフイルタ、３は入力平滑用フ
イルタ、４は半導体スイツチング部である。５は
インバータトランスであつて、N1はその１次巻
線、N2は２次巻線、N3は補助巻線である。６は
出力整流部、７は出力平滑用フイルタである。８
は主回路用コモンモードチヨーク９及びコンデン
サ１０、１１から成る主回路用コモンモードフイ
ルタである。１２、１３は出力端子、１４は負荷
である。１５は制御回路用コモンモードチヨーク
１６及びコンデンサ１７〜２０から成る制御回路
用コモンモードフイルタである。２１、２２は抵
抗、２３は演算増幅器、２４は演算増幅器２３の
基準電圧、２５はインバータトランス５の補助巻
線N3の電圧を整流し且つ安定化した演算増幅器
２３用の直流電源、２６はアイソレータである。
２７はパルス幅変調部２８、駆動回路部２９及び
基準発振器３０から成る制御駆動回路である。３
１は制御駆動回路２７用の直流電源である。 FIG. 1 shows a conventional power supply device in which measures against normal mode noise and common mode noise as described above are taken. In the figure, 1 is an input DC power supply, 2 is an input noise filter, 3 is an input smoothing filter, and 4 is a semiconductor switching section. 5 is an inverter transformer, N1 is its primary winding, N2 is its secondary winding, and N3 is its auxiliary winding. 6 is an output rectifier, and 7 is an output smoothing filter. 8
is a common mode filter for the main circuit, which is composed of a common mode filter 9 for the main circuit and capacitors 10 and 11. 12 and 13 are output terminals, and 14 is a load. Reference numeral 15 denotes a common mode filter for the control circuit, which includes a common mode filter 16 for the control circuit and capacitors 17 to 20. 21 and 22 are resistors, 23 is an operational amplifier, 24 is a reference voltage for the operational amplifier 23, 25 is a DC power source for the operational amplifier 23 that rectifies and stabilizes the voltage of the auxiliary winding N3 of the inverter transformer 5, and 26 is a It is an isolator.
Reference numeral 27 denotes a control drive circuit consisting of a pulse width modulation section 28, a drive circuit section 29, and a reference oscillator 30. 3
1 is a DC power supply for the control drive circuit 27.
ところで従来より斯かる電源装置の主回路用コ
モンモードチヨーク及び制御回路用コモンモード
チヨークとしては、夫々の鉄心に同一コイルを同
ターン数、バイフアイラ巻きしたものが使用され
ていたので、結局、２つの鉄心を必要とし、ノイ
ズフイルタが大形化し且つ材料費、工数等の点で
不経済であつた。 By the way, conventionally, as the common mode choke for the main circuit and the common mode choke for the control circuit of such a power supply device, a bifilar winding of the same coil with the same number of turns around each iron core has been used. This requires two iron cores, increases the size of the noise filter, and is uneconomical in terms of material costs, man-hours, etc.
本考案は斯かる従来の電源装置の欠点を除去す
るものであり、主回路用コモンモードチヨーク及
び制御回路用コモンモードチヨークとして共通の
鉄心を使用し、コモンモードフイルタ全体を小型
化し、コモンモードノイズに有効で、経済性の良
い電源装置を提供するものである。 The present invention eliminates the drawbacks of the conventional power supply device, and uses a common iron core as the common mode choke for the main circuit and the common mode choke for the control circuit, downsizes the entire common mode filter, and The present invention provides an economical power supply device that is effective against mode noise.
第２図Ａ及びＢは夫々本考案によるコモンモー
ドチヨークの構造例を示す図であり、第３図は第
２図に示すコモンモードチヨークを使用した本考
案の電源装置の一実施例を示す図である。 2A and 2B are diagrams each showing an example of the structure of a common mode choke according to the present invention, and FIG. 3 shows an example of a power supply device according to the present invention using the common mode choke shown in FIG. FIG.
第２図において、Ａは主回路用コモンモードチ
ヨーク９の高圧側巻線L1、低圧側巻線L2及び制
御回路用コモンモードチヨーク１６の高圧側巻線
L3、低圧側巻線L4の全巻線を同一の鉄心３２に
バイフアイラ巻きして形成したものであり、又Ｂ
は高圧側巻線L1、L3及び抵圧側巻線L2、L4の
夫々を同一の鉄心３２にバイフアイラ巻きして形
成したものであり、高圧側巻線L1、L3と低圧側
巻線L2、L4とが粗結合になつている。第２図に
おいてａを巻き始め、ｂを巻き終りとするとａ
は、第３図に示した実施例のコモンモードチヨー
クの各巻線L1、L2、L3、L4の・印側に一致す
る。 In FIG. 2, A indicates the high-voltage side winding L 1 of the common mode yoke 9 for the main circuit, the low-voltage side winding L 2 and the high-voltage side winding of the common mode yoke 16 for the control circuit.
L 3 , all the windings of the low voltage side winding L 4 are formed by bifilar winding around the same iron core 32, and B
is formed by bifilar winding the high-voltage side windings L 1 , L 3 and the resistance-side windings L 2 , L 4 around the same iron core 32, and the high-voltage side windings L 1 , L 3 and the low-voltage side windings Windings L 2 and L 4 are loosely coupled. In Figure 2, if a starts winding and b ends winding, then a
corresponds to the .marked side of each winding L 1 , L 2 , L 3 , L 4 of the common mode yoke of the embodiment shown in FIG.
従つて、第３図に於いて、従来と同様にしてノ
ーマルモードの負荷電流による鉄心３２に生ずる
磁束は打ち消し合つて直流重畳磁界が生ぜず飽和
を避ける為に大型化することはない。又、コモン
モードノイズを遮断するに必要な各巻線L1、
L2、L3、L4のインダクタンスＬcは鉄心の真空の
透磁率をμp、実効透磁率をμa、巻数をＮ、鉄心
の断面積をＳ、磁路長をｌとすると
Ｌc＝μpμaN2S／ｌ …………(1)
で表わされる。従つて鉄心の実効透磁率μa、巻
数Ｎ及び鉄心の断面積Ｓと磁路長ｌとの比Ｓ／ｌ
が一定であれば、コモンモードチヨークの大きさ
は該コモンモードチヨークを許容温度上昇以下即
ち許容銅損以下とする為に選択される線材の断面
積による。即ち負荷電流Ｉが大きくなればなる
程、I2に比例して損失が増加するので線材の断面
積を大として直流抵坑を低下させなければなら
ず、巻線の占有率が大となり、コモンモードチヨ
ークが大形となる。 Therefore, in FIG. 3, as in the conventional case, the magnetic flux generated in the iron core 32 due to the normal mode load current cancels each other out, so that no DC superimposed magnetic field is generated and the size is not increased to avoid saturation. In addition, each winding L 1 necessary to block common mode noise,
The inductance L c of L 2 , L 3 , and L 4 is L c where μ p is the vacuum magnetic permeability of the core, μ a is the effective magnetic permeability, N is the number of turns, S is the cross-sectional area of the core, and l is the magnetic path length . = μ p μ a N 2 S/l …(1) It is expressed as follows. Therefore, the effective magnetic permeability μ a of the iron core, the number of turns N, and the ratio S/l of the cross-sectional area S of the iron core and the magnetic path length l
If is constant, the size of the common mode cheese depends on the cross-sectional area of the wire material selected to keep the common mode cheese below the allowable temperature rise, that is, below the allowable copper loss. In other words, as the load current I becomes larger, the loss increases in proportion to I 2 , so the cross-sectional area of the wire must be increased to lower the DC resistance, and the occupancy of the winding becomes larger, causing the common Modetiyoke becomes large.
ところで、主回路用コモンモードチヨーク９の
巻線L1、L2を通流する電流は、制御回路用コモ
ンモードチヨーク１６の巻線L3、L4を通流する
電流に比較して通常100倍程度以上大きく、それ
故、同一の鉄心３２に主回路用コモンモードチヨ
ーク９の巻線L1、L2及び制御回路用コモンモー
ドチヨーク１６の巻線L3、L4を巻いた本考案の
コモンモードチヨークにあつては、主回路用コモ
ンモードチヨーク９の巻線L1、L2の占有率に対
する制御回路用コモンモードチヨーク１６の巻線
L3、L4の占有率は、負荷電流が大なる程小さ
い。換言すれば、コモンモードチヨークの大きさ
は主回路用コモンモードチヨーク９の巻線L1、
L2を通流する負荷電流によつて殆ど決定され、
制御回路用コモンモードチヨーク１６の巻線
L3、L4を含んでいるにもかかわらず、従来の主
回路用コモンモードチヨーク９と大きさが殆ど同
じである。又、本考案のコモンモードチヨークは
単一のコモンモードチヨークで従来の主回路用コ
モンモードチヨーク９の作用と制御回路用コモン
モードチヨーク１６の作用とを兼ね備えており、
半導体スイツチング部４、出力整流部６に発生し
たコモンモードノイズが主回路及び制御回路を介
して出力に伝達されるのを有効に防止することが
できる。 By the way, the current flowing through the windings L 1 and L 2 of the common mode yoke 9 for the main circuit is smaller than the current flowing through the windings L 3 and L 4 of the common mode yoke 16 for the control circuit. Usually, it is about 100 times larger, and therefore the windings L 1 and L 2 of the common mode cheese yoke 9 for the main circuit and the windings L 3 and L 4 of the common mode cheese yoke 16 for the control circuit are wound around the same iron core 32. In the common mode cheese yoke of the present invention, the winding of the common mode cheese 16 for the control circuit with respect to the occupancy rate of the windings L 1 and L 2 of the common mode cheese 9 for the main circuit is
The occupancy rates of L 3 and L 4 become smaller as the load current increases. In other words, the size of the common mode yoke is the winding L 1 of the common mode yoke 9 for the main circuit,
determined mostly by the load current flowing through L 2 ,
Winding of common mode yoke 16 for control circuit
Although it includes L 3 and L 4 , it is almost the same in size as the conventional common mode choke 9 for main circuits. In addition, the common mode cheese yoke of the present invention is a single common mode cheese that combines the functions of the conventional common mode cheese 9 for main circuits and the effects of the common mode cheese 16 for control circuits.
Common mode noise generated in the semiconductor switching section 4 and the output rectifying section 6 can be effectively prevented from being transmitted to the output via the main circuit and the control circuit.
以上述べたように本考案は主回路及び制御回路
に夫々主回路用コモンモードチヨーク及び制御回
路用コモンモードチヨークを有する電源装置にお
いて、上記主回路用コモンモードチヨーク及び制
御回路用コモンモードチヨークの両者を同一の鉄
心にバイフアイラ巻きして構成したことを特徴と
する電源装置である。本考案はこのような特徴を
有するので制御回路用コモンモードチヨーク専用
の鉄心を省略でき、材料費、工数等の短縮による
経済性の向上、コモンモードフイルタ全体が小形
化される等の効果がある。従つて、コモンモード
フイルタのコモンモードチヨークとして広く応用
することができる。 As described above, the present invention provides a power supply device having a common mode choke for the main circuit and a common mode choke for the control circuit in the main circuit and the control circuit, respectively. This is a power supply device characterized in that both the yoke and the yoke are bifilar-wound around the same iron core. Since the present invention has such features, it is possible to omit the iron core dedicated to the common mode choke for the control circuit, and it has the effects of improving economic efficiency by reducing material costs and man-hours, and making the entire common mode filter smaller. be. Therefore, it can be widely applied as a common mode choke of a common mode filter.
第１図は従来の電源装置を示す図、第２図は本
考案によるコモンモードチヨークの構造例を示す
図、第３図は本考案の一実施例を示す図である。
１……入力直流電源、２……入力ノイズフイル
タ、３……入力平滑用フイルタ、４……半導体ス
イツチング部、５……インバータトランス、６…
…出力整流部、７……出力平滑用フイルタ、８…
…主回路用コモンモードフイルタ、９……コモン
モードチヨーク、１０，１１，１７〜２０……コ
ンデンサ、１２，１３……出力端子、１４……負
荷、１５……制御回路用コモンモードフイルタ、
１６……制御回路用コモンモードチヨーク、２
１，２２……抵坑、２３……演算増幅器、２４…
…基準電圧、２５……直流電源、２６……アイソ
レータ、２７……制御駆動回路、２８……パルス
幅変調部、２９……駆動回路部、３０……基準発
振器、３１……直流電源、３２……鉄心。
FIG. 1 is a diagram showing a conventional power supply device, FIG. 2 is a diagram showing an example of the structure of a common mode choke according to the present invention, and FIG. 3 is a diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Input DC power supply, 2... Input noise filter, 3... Input smoothing filter, 4... Semiconductor switching section, 5... Inverter transformer, 6...
... Output rectifier, 7... Output smoothing filter, 8...
...Common mode filter for main circuit, 9...Common mode filter, 10, 11, 17-20...Capacitor, 12, 13...Output terminal, 14...Load, 15...Common mode filter for control circuit,
16...Common mode choke for control circuit, 2
1, 22...Resistor, 23...Operation amplifier, 24...
... Reference voltage, 25 ... DC power supply, 26 ... Isolator, 27 ... Control drive circuit, 28 ... Pulse width modulation section, 29 ... Drive circuit section, 30 ... Reference oscillator, 31 ... DC power supply, 32 ... Iron core.
Claims (1)
ードチヨーク及び制御回路用コモンモードチヨ
ークを有する電源装置において、上記主回路用
コモンモードチヨーク及び制御回路用コモンモ
ードチヨークの両者を同一の鉄心にバイフアイ
ラ巻きして構成したことを特徴とする電源装
置。 (2) 上記主回路用コモンモードチヨーク及び制御
回路用コモンモードチヨークの両者の全巻線を
バイフアイラ巻きしたことを特徴とする実用新
案登録請求の範囲(1)に記載した電源装置。 (3) 上記主回路用コモンモードチヨーク及び制御
回路用コモンモードチヨークの両者の低圧側巻
線同士、高圧側巻線同士を夫々バイフアイラ巻
きしたことを特徴とする実用新案登録請求の範
囲(1)に記載した電源装置。[Scope of Claim for Utility Model Registration] (1) In a power supply device having a common mode choke for the main circuit and a common mode choke for the control circuit in the main circuit and the control circuit, respectively, the common mode choke for the main circuit and the control circuit A power supply device characterized in that both a common mode tie yoke and a common mode tie yoke are bifilar-wound around the same iron core. (2) The power supply device according to claim (1) of the utility model registration, characterized in that all the windings of both the common mode choke for the main circuit and the common mode choke for the control circuit are bifilar wound. (3) The scope of the utility model registration claim, which is characterized in that the low-voltage side windings and the high-voltage side windings of both the common mode chokes for the main circuit and the common mode chokes for the control circuit are bifilar-wound, respectively. Power supply device described in 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4213682U JPS58145089U (en) | 1982-03-25 | 1982-03-25 | power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4213682U JPS58145089U (en) | 1982-03-25 | 1982-03-25 | power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58145089U JPS58145089U (en) | 1983-09-29 |
| JPS6227029Y2 true JPS6227029Y2 (en) | 1987-07-10 |
Family
ID=30053280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4213682U Granted JPS58145089U (en) | 1982-03-25 | 1982-03-25 | power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58145089U (en) |
-
1982
- 1982-03-25 JP JP4213682U patent/JPS58145089U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58145089U (en) | 1983-09-29 |
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