JPS59226509A - Filter protecting circuit - Google Patents
Filter protecting circuitInfo
- Publication number
- JPS59226509A JPS59226509A JP58101541A JP10154183A JPS59226509A JP S59226509 A JPS59226509 A JP S59226509A JP 58101541 A JP58101541 A JP 58101541A JP 10154183 A JP10154183 A JP 10154183A JP S59226509 A JPS59226509 A JP S59226509A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- circuit
- capacitor
- breaker
- load
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001052 transient effect Effects 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
- H03H7/425—Balance-balance networks
- H03H7/427—Common-mode filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/09—Filters comprising mutual inductance
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Filters And Equalizers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は給電線路に並列に接続されるフィルタ保護回路
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter protection circuit connected in parallel to a power supply line.
近年、エレクトロニクス化の著るしい進展に伴い、装置
機器の高周波化が進み、負荷側から電源入力への帰環雑
音量が増大し、同一給電線に接続された他装置機器への
雑音障害が、顕在化して来た。この様な雑音に対し給電
線路のフィルタ効果を向上させる為に、給電路に対して
直列にフィルタを挿入し、雑音除去を行う方法が実施さ
れて来た(第1図参照)が、フィルタ点検又は障害時に
給電線路の遮断器を切断しなければならず、その為に装
置機器の運転を停止させたシ、予めバイパス回路を準備
しなければならず、特にフィルタ障害時には突然の装置
、機器停止となシ、フィルタ修復、装置動作まで長時間
を要すること等、摸大な損失となる欠点があった。In recent years, with the remarkable progress in electronics, the frequency of equipment has increased, and the amount of feedback noise from the load side to the power supply input has increased, causing noise interference to other equipment connected to the same power feed line. , has become obvious. In order to improve the filtering effect of the feed line against such noise, a method has been implemented in which a filter is inserted in series with the feed line to remove noise (see Figure 1). Or, in the event of a failure, the circuit breaker on the power supply line must be disconnected, and the operation of the equipment must be stopped for this purpose.A bypass circuit must be prepared in advance, and especially in the event of a filter failure, sudden equipment and equipment stoppage may occur. There were drawbacks such as the long time it took to repair the filter and to start the device, resulting in enormous losses.
本発明は上記欠点を除去する為になされたものであり、
従って本発明の目的は、フィルタの保守点検、障害時に
運転中の装置機器を停止させることなく、運転を継続さ
せたままで保守、点検、障害時の修復作業を実行できる
新規な保護回路を提供することにある。The present invention has been made to eliminate the above-mentioned drawbacks,
Therefore, an object of the present invention is to provide a new protection circuit that can perform maintenance, inspection, and repair work in the event of a failure without stopping the equipment in operation at the time of filter maintenance or failure. There is a particular thing.
上記目的を達成する為に、本発明に係るフィルタ保護回
路は、少なくともlケのダイオードと、抵抗と、コンデ
ンサとを並列に接続し、その並列接続回路の両端に片端
を開放とした各1個の過電流遮断器を接続し、#記ダイ
オード、抵抗コンデンサの並列接続回路を給電線路に直
列に接続して構成される。一
本発明においては、フィルタの内部インピーダンスの低
下等、フィルタの障害時に過電流遮断器にて障害回路を
切シ離し、ダイオード、抵抗、コンデンサによる前記並
列バイパス回路によシ、継続して電源を負荷に供給する
。In order to achieve the above object, the filter protection circuit according to the present invention has at least one diode, a resistor, and a capacitor connected in parallel, and one end of each of the parallel connected circuits is connected to each other with one end open. The overcurrent circuit breaker is connected, and a parallel connection circuit of a diode and a resistance capacitor is connected in series to the power supply line. In the present invention, when a filter failure occurs due to a drop in the internal impedance of the filter, the overcurrent circuit breaker disconnects the faulty circuit, and the parallel bypass circuit consisting of a diode, resistor, and capacitor continues to supply power. supply to the load.
次に本発明をその好ましい各実施例について図面を参照
して具体的に説明する。Next, preferred embodiments of the present invention will be specifically explained with reference to the drawings.
第2図を参照すると、本発明の第一の実施例は、給電線
路〃、コ/に接続される本発明のフィルタ保護回路お、
コアとフィルタ保護回路の構成要素コンデンサコg、s
s、抵抗コ9.jlI、ダイオード30,3/。Referring to FIG. 2, a first embodiment of the present invention includes a filter protection circuit of the present invention connected to a power supply line.
Core and filter protection circuit components capacitor g, s
s, resistance 9. jlI, diode 30,3/.
!2.jJ、過電流遮断器3コ、 、?、7. !0.
g/とこれら保護回路に接続されるフィルタ回路ムと
その構成要素の一例としてのインダクタンス、??、
’10.4’4’、 4’&とコンデンサ41/、4’
Jと、その中点りから接地リード端子3と負荷への給電
線路!?、jttとを含む。次に上記構成によるフィル
タ保護回路の作用動作について説明する。! 2. jJ, 3 overcurrent breakers, ? ,7. ! 0.
g/, filter circuits connected to these protection circuits, and inductance as an example of its components. ? ,
'10.4'4', 4'& and capacitor 41/, 4'
J and the power supply line from its center point to the ground lead terminal 3 and the load! ? , jtt. Next, the operation of the filter protection circuit with the above configuration will be explained.
通常動作においては、給電線路〃、コlからの雑音電圧
侵入に対しては保護回路、2j、:l?の接続部ココ。In normal operation, a protection circuit 2j, :l? protects against noise voltage intrusion from the feed line. Here is the connection.
評を通じて過電流遮断器32.!;0を通シ、フィルタ
回路コロへ導かれ、インダクタンスyo、lIsに阻止
されてインダクタンス、39.’741、コンデンサ4
//、lIjヲ通シ、接続点lIλを介してアース点3
へ導かれて雑音が吸収される。雑音が除去された良質な
電源はフィルタ出力3g、す7を通シ遮断器33,3/
を経由して保護回路出口3ダ、!6を通シ負荷給電線路
!r7,3gへ送シ出されて負荷へ接続される。Overcurrent circuit breaker 32. ! ; 0 is passed through, guided to the filter circuit roller, blocked by inductance yo, lIs, and becomes inductance, 39. '741, capacitor 4
//, through lIj, to earth point 3 via connection point lIλ
noise is absorbed. A high-quality power source with noise removed has a filter output of 3g, and a circuit breaker 33, 3/
Protection circuit exit 3 da, via! 6 through load feed line! It is sent to r7, 3g and connected to the load.
ここで、フィルタ回路コロのコンデンサぐ/が著しく低
インピーダンスとなシ、給電々流が3端子を介して接地
線へ流れると、フィルタ保護回路コの遮断器3コは、過
電流を検知して連動する遮断器33と共にフィルタ回路
を切シ離す様に動作し、給電々流ルートはダイオード、
30.J/のいずれかと、抵抗コ9、切シ替え時の過渡
振動吸収用のコンデンサ2gを介して瞬断することなく
給電線s7から負荷へ電力供給される。Here, when the capacitors in the filter circuit have extremely low impedance and the current flows to the ground wire through the three terminals, the three circuit breakers in the filter protection circuit detect the overcurrent. It operates to disconnect the filter circuit together with the interlocking circuit breaker 33, and the current feeding route is a diode,
30. Electric power is supplied to the load from the power supply line s7 without momentary interruption via either one of J/, the resistor 9, and the capacitor 2g for absorbing transient vibrations at the time of switching.
一般的にフィルタ回路コロに示す様な対象形フィルタ回
路に於いては、コンデンサ’II、’13が同時に劣化
することは少なく、片側が正常圧動作していることから
フィルタ効果は減少しても全て切9離す事なく装置機器
の継続運転が可能となる。又、両回路共に事故発生の場
合でも保護回路Jで説明した如くバイパス回路により継
続して安定な給電が得られる。In general, in a symmetrical filter circuit like the one shown in the filter circuit column, capacitors 'II and '13 rarely deteriorate at the same time, and since one side operates at normal pressure, the filter effect may decrease. It is possible to continue operating the equipment without disconnecting everything. Further, even if an accident occurs in both circuits, stable power supply can be continuously obtained by the bypass circuit as explained in connection with the protection circuit J.
第3図に示す本発明の第一の実施例は本保護回路を直流
給電回路に採用した場合のものである。A first embodiment of the present invention shown in FIG. 3 is a case where the present protection circuit is employed in a DC power supply circuit.
第3図を参照すると、本発明による第一の実施例は入力
給電線路(+)t、、2 、←)A/と、主遮断器6ユ
と、コンデンサ7Sと、抵抗76と、ダイオードフッと
、過電流遮断器りJ、7’lとから成るフィルタ保護回
路63と、電解コンデンサ7gと、負荷給電線路A7,
7コとから成るフィルタフ9とを含む。Referring to FIG. 3, the first embodiment of the present invention includes an input feed line (+) t, 2, ←) A/, a main circuit breaker 6, a capacitor 7S, a resistor 76, and a diode hood. , a filter protection circuit 63 consisting of an overcurrent circuit breaker J, 7'l, an electrolytic capacitor 7g, and a load feed line A7,
and a filter 9 consisting of seven filters.
次に、上記構成に於けるフィルタ保護回路の第一の実施
例の動作について説明する。通常動作においては、(+
)側フィルタ保護回路IJの過電流遮断器73を介して
フィルタフ9のコンデンサ7gの(+)側接続点gOを
通り、過電流遮断器71を通して負荷側給電線67へ、
更に復路りλを通シフィルタク9のコンデンサ7gの(
→側g/を通して入力側←)A/への電流ルートとなる
様に構成した場合に於いて、負荷回路でパルス状の電流
負荷となった場合には、コンデンサリードのインダクタ
ンスが低減される事により。Next, the operation of the first embodiment of the filter protection circuit in the above configuration will be explained. In normal operation, (+
) side through the overcurrent breaker 73 of the filter protection circuit IJ, pass through the (+) side connection point gO of the capacitor 7g of the filter 9, and pass through the overcurrent breaker 71 to the load side power supply line 67,
Furthermore, the return path λ is passed through the capacitor 7g of the filter 9 (
When configured so that the current route passes through the → side g/ to the input side ←) A/, the inductance of the capacitor lead will be reduced if the load circuit becomes a pulse-like current load. By.
負荷側へのフィルタ効果り極めて効果的となるが、電解
コンデンサ7gの劣化も早くなり、電解コンデンサ7g
のスポット現象が拡大し、内部短絡現象によりコンデン
サ内部に連続過大電流が流れる。、この場合には連動す
る過電流遮断器り3又は?9のいずれかが動作してフィ
ルタ79のコンデンサ7gを切り離し、ダイオードグツ
と、抵抗76、コンデンサク3により継続して負荷へ電
流が供給される。The filter effect on the load side is extremely effective, but the electrolytic capacitor 7g also deteriorates faster, and the electrolytic capacitor 7g
The spot phenomenon expands, and a continuous excessive current flows inside the capacitor due to an internal short circuit phenomenon. In this case, the interlocking overcurrent circuit breaker 3 or ? 9 operates to disconnect the capacitor 7g of the filter 79, and the diode, resistor 76, and capacitor 3 continue to supply current to the load.
上記第一の実施例の変形として、コンデンサ(→側にも
(+)側と同様に保護回路を対称的に接続することがで
きる。このような構成とすることにょシ、効果的なフィ
ルタを構成することが出来、フィルタ切離し回路の有効
性が向上する。As a modification of the first embodiment described above, a protection circuit can be connected symmetrically to the capacitor (→ side as well as the (+) side. With such a configuration, an effective filter can be installed. The effectiveness of the filter decoupling circuit is improved.
本発明は、以上説明したように、実施例1及びコの様に
構成することによシフィルタ効果をそこなわず効果的に
フィルタの保護が実施出来る効果がある。As explained above, the present invention has an advantage in that the filter can be effectively protected without impairing the filter effect by having the configurations as shown in the first embodiment and A.
第1図は従来のフィルタ保護回路を示す構成図、第−図
は本発明の第1の実施例を示した回路構成図、第3図は
本発明を直流給電口゛路に実施した第一の実施例を示す
回路構成図である。
、3,41,3コ、 、?、7. !0. !r/、
?、7.74’・・・過電流遮断器、! 、 21.、
.1−9. ??・・・フィルタ回路、30,3/、、
tコ。
jJ、り7・・・ダイオード1.29. &lI、 7
4・・・抵抗特許出願人 日本電気株式会社
代 理 人 弁理士 熊谷雄太部
第1「1
りζ
第2図−27’−″−−−−
第3回FIG. 1 is a block diagram showing a conventional filter protection circuit, FIG. 1 is a circuit diagram showing a first embodiment of the present invention, and FIG. FIG. 2 is a circuit configuration diagram showing an embodiment of the present invention. , 3, 41, 3, ,? ,7. ! 0. ! r/,
? , 7.74'...Overcurrent circuit breaker,! , 21. ,
.. 1-9. ? ? ...filter circuit, 30,3/,,
tco. jJ, ri7...diode 1.29. &lI, 7
4...Resistance patent applicant NEC Co., Ltd. Agent Patent attorney Yutabe Kumagai No. 1 ``1 riζ Figure 2-27'-''----- 3rd session
Claims (1)
を並列に接続し、その並列回路両端に片端を開放とした
各々1個の過電流遮断器を接続したことを特徴とするフ
ィルタ保護回路。A filter protection circuit characterized in that at least seven diodes, a resistor, and a capacitor are connected in parallel, and one overcurrent circuit breaker with one end open is connected to each end of the parallel circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58101541A JPS59226509A (en) | 1983-06-07 | 1983-06-07 | Filter protecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58101541A JPS59226509A (en) | 1983-06-07 | 1983-06-07 | Filter protecting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59226509A true JPS59226509A (en) | 1984-12-19 |
JPH0442847B2 JPH0442847B2 (en) | 1992-07-14 |
Family
ID=14303292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58101541A Granted JPS59226509A (en) | 1983-06-07 | 1983-06-07 | Filter protecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59226509A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02206360A (en) * | 1989-01-31 | 1990-08-16 | Sony Corp | Filter circuit |
CN107576901A (en) * | 2016-07-04 | 2018-01-12 | 恩德莱斯和豪瑟尔分析仪表两合公司 | The method and circuit of the fault detect of circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57151943U (en) * | 1981-03-17 | 1982-09-24 |
-
1983
- 1983-06-07 JP JP58101541A patent/JPS59226509A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57151943U (en) * | 1981-03-17 | 1982-09-24 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02206360A (en) * | 1989-01-31 | 1990-08-16 | Sony Corp | Filter circuit |
JP2784783B2 (en) * | 1989-01-31 | 1998-08-06 | ソニー株式会社 | Filter circuit |
CN107576901A (en) * | 2016-07-04 | 2018-01-12 | 恩德莱斯和豪瑟尔分析仪表两合公司 | The method and circuit of the fault detect of circuit |
CN107576901B (en) * | 2016-07-04 | 2020-08-04 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method for detecting fault of circuit and circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0442847B2 (en) | 1992-07-14 |
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