JPH03117319A - Life indicating circuit for inverter - Google Patents
Life indicating circuit for inverterInfo
- Publication number
- JPH03117319A JPH03117319A JP1250303A JP25030389A JPH03117319A JP H03117319 A JPH03117319 A JP H03117319A JP 1250303 A JP1250303 A JP 1250303A JP 25030389 A JP25030389 A JP 25030389A JP H03117319 A JPH03117319 A JP H03117319A
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- capacitor
- circuit
- electrolytic capacitor
- light emitting
- 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 47
- 230000006866 deterioration Effects 0.000 claims abstract description 14
- 238000009499 grossing Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、その主要構成要素劣化検出によるインバー
タの寿命予知・表示回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a circuit for predicting and displaying the life of an inverter by detecting deterioration of its main components.
従来、インバータの寿命を積極的且つ正確に予知・検出
する手段は無く、該インバータの負荷状態或いはその周
囲温度等の運転条件とその主要構成要素の予想故障率等
から定めた時間インターバルにて前記インバータの保守
・点検を行っていた。Conventionally, there is no means to proactively and accurately predict or detect the lifespan of an inverter. Performed maintenance and inspection of inverters.
なお第３図は、前記インバータの寿命に大きく影響する
電解コンデンサを多用しＤ Ｃ／Ｄ Ｃコンバータから
成る従来のインバータ用直流制御電源回路の回路図の例
示である。FIG. 3 is an example of a circuit diagram of a conventional DC control power supply circuit for an inverter, which is composed of a DC/DC converter and uses many electrolytic capacitors, which greatly affects the life of the inverter.
第３図において、１のＤＣ／ＤＣＣ／式−タは自励発振
形チョッパ回路を基本として構成されたものであり、Ｃ
１〜Ｃ３は電解コンデンサ、Ｄ。In Fig. 3, the DC/DCC/equation controller 1 is constructed based on a self-oscillation type chopper circuit, and the C
1 to C3 are electrolytic capacitors, D.
〜Ｄ、はダイオード、ＴＲ，とＴＲ，とはトランジスタ
である。またＴ、は変圧器であり、前記コンバータの直
流入力電圧を断続して得たチョッパ電流を通電する１吹
上巻線と、前記トランジスタＴＲＩのスイッチング用に
そのベースに対する前記チョッパ電流の正帰還信号を発
生させ抵抗Ｒ２とコンデンサＣ０とから成る時定数回路
を介して給電する正帰還用巻線と、前記主巻線に対しそ
れぞれ適当な巻線比を有する複数の２次巻線とを有する
ものである。~D is a diode, and TR and TR are transistors. Further, T is a transformer, which includes one upwinding winding through which a chopper current obtained by intermittent DC input voltage of the converter is passed, and a positive feedback signal of the chopper current to its base for switching the transistor TRI. It has a positive feedback winding that generates power and supplies power through a time constant circuit consisting of a resistor R2 and a capacitor C0, and a plurality of secondary windings each having an appropriate winding ratio with respect to the main winding. be.
前記時定数回路による指定通流率と前記変圧器巻線比に
より決定された前記各２次巻線出力電圧は前記各ダイオ
ードＤ２〜Ｄ、により整流され、更には前記トランジス
タＴＲ２の制御にて再調整され、所要の各制御用直流電
圧となり端子ＰｔＭｘ、・・・、Ｐｈ Ｍｂ 、Ｐ７
Ｍ２よりそれぞれ出力される。The output voltages of the secondary windings determined by the specified conduction rate by the time constant circuit and the transformer winding ratio are rectified by the diodes D2 to D, and further rectified by the control of the transistor TR2. The DC voltage for each control is adjusted and the terminals PtMx, ..., Ph Mb, P7
Each is output from M2.
しかしながら上記の如き従来の保守・点検によってはイ
ンバータの寿命予知とそれによるインバータの故障事前
防止には限界があった。However, there is a limit to the ability to predict the lifespan of an inverter and prevent inverter failures using the conventional maintenance and inspection methods described above.
上記に鑑み本発明は、インバータの主要構成要素の劣化
検出により該インバータの寿命の概略推定を可能としそ
の保守・点検時期の適確化を図り、不意のインバータ故
障の防止をより確実になすことを可能とするインバータ
の寿命表示回路の提供を目的とするものである。In view of the above, the present invention makes it possible to roughly estimate the lifespan of an inverter by detecting deterioration of the main components of the inverter, to optimize the timing of maintenance and inspection, and to more reliably prevent unexpected inverter failures. The purpose of this invention is to provide an inverter life display circuit that makes it possible to display the life of an inverter.
上記目的を達成するために、本発明のインバータの寿命
表示回路は、インバータにおける単一または複数の直流
制御電源回路における直流出力電圧平滑用の電解コンデ
ンサの全部または適当に選定された幾つかに対し、コン
デンサと発光ダイオードとの直列接続回路をそれぞれ並
列に接続して成り、前記インバータの寿命関連主要素で
ある前記電解コンデンサの劣化状態を前記発光ダイオー
ドの点灯度合により表示するものである。To achieve the above object, the inverter life display circuit of the present invention applies to all or some appropriately selected electrolytic capacitors for DC output voltage smoothing in a single or multiple DC control power supply circuit in an inverter. , a series connection circuit of a capacitor and a light emitting diode is connected in parallel, and the deterioration state of the electrolytic capacitor, which is a main factor related to the life of the inverter, is displayed by the lighting degree of the light emitting diode.
一般にインバータの寿命は、該インバータにおける直流
平滑回路に使用される電解コンデンサの劣化をその最大
要件として決定される。In general, the lifespan of an inverter is determined with the maximum requirement being deterioration of an electrolytic capacitor used in a DC smoothing circuit in the inverter.
また前記電解コンデンサの劣化は一般にその静電容量の
低下をもたらし、従って前記の如き直流平滑回路に使用
される電解コンデンサの劣化は該平滑回路におけるリッ
プル電圧の増大を招くことになる。すなわち前記インバ
ータの寿命は、電解コンデンサを使用したその直流平滑
回路におけるリップル電圧の増大度合より概略推定が可
能となる。Further, deterioration of the electrolytic capacitor generally results in a decrease in its capacitance, and therefore deterioration of the electrolytic capacitor used in the above DC smoothing circuit results in an increase in the ripple voltage in the smoothing circuit. That is, the life of the inverter can be roughly estimated from the degree of increase in ripple voltage in its DC smoothing circuit using electrolytic capacitors.
本発明は、上記に従い、対象とする電解コンデンサの両
端に交流分遣過用のコンデンサと発光ダイオードとの直
列回路を並列に接続し、該発光ダイオードに前記す７プ
ル電圧に対応した電流を通電させその点灯度合により前
記インバータ寿命の推定表示を行うものである。In accordance with the above, the present invention connects a series circuit of an AC distribution capacitor and a light emitting diode in parallel to both ends of a target electrolytic capacitor, and energizes the light emitting diode with a current corresponding to the seven pull voltages. The estimated lifespan of the inverter is displayed based on the degree of lighting.
なお複数個の並列接続された電解コンデンサ群はそれら
の合成静電容量を有する１個の等価電解コンデンサとみ
なされ、前記コンデンサ群に対する前記の如きリップル
電圧の検出は前記の如き発光ダイオード回路の１組を設
置すれば良く、また前記リフプル電圧の増大は前記並列
コンデンサ群中の何れかのコンデンサにおける劣化を示
すものとなる。Note that a plurality of electrolytic capacitor groups connected in parallel are regarded as one equivalent electrolytic capacitor having a combined capacitance, and the detection of the ripple voltage as described above for the capacitor group is performed using one of the light emitting diode circuits as described above. In addition, an increase in the ripple voltage indicates deterioration in any one of the capacitors in the parallel capacitor group.
更になお、前記インバータの寿命表示に当っては、原則
として、電解コンデンサの単体または複数個並列群それ
ぞれに対し前記の如き発光ダイオード回路の設置を要す
るが、もし何れか１個または１群の電解コンデンサが使
用条件或いは故障率の実績等により他の電解コンデンサ
またはコンデンサ群に比し最も短寿命であることが確実
に推定し得る場合には該最短寿命コンデンサまたはコン
デンサ群のみに対する前記発光ダイオード回路の設置に
より前記インバータ寿命の概略推定が可能となる。Furthermore, in order to indicate the lifespan of the inverter, in principle, it is necessary to install a light emitting diode circuit as described above for each electrolytic capacitor or for each parallel group of electrolytic capacitors. If it can be reliably estimated that the capacitor has the shortest lifespan compared to other electrolytic capacitors or capacitor groups due to usage conditions or actual failure rate, etc., the light emitting diode circuit for only the shortest life capacitor or capacitor group. The installation makes it possible to roughly estimate the inverter lifespan.
以下この発明の実施例を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図と第２図とはこの発明の第１と第２の実施例を示
す回路図である。なお第１図と第２図とにおいては前記
第３図に示す直流制御電源回路の回路図の場合と同一機
能の構成要素に対しては同一の表示符号を附している。FIGS. 1 and 2 are circuit diagrams showing first and second embodiments of the present invention. Note that in FIGS. 1 and 2, the same reference numerals are given to components having the same functions as in the circuit diagram of the DC control power supply circuit shown in FIG. 3.
第１図は第３図の回路図において、図示ＤＣ／ＤＣＣ／
式−タを用いるインバータの寿命推定が電解コンデンサ
Ｃ８〜Ｃ１中のＣｚ１個を対象として確実に可能である
と予測できる場合に、該コンデンサＣ２の端子電圧を入
力とする寿命表示回路２を設けたものである。該表示回
路２においてＣ，は直流電圧を阻止しリップル交流電圧
のみを通過させる交流用コンデンサ、ＬＥＤは発光ダイ
オード、Ｒ，は該発光ダイオードに対する印加電圧整合
用の抵抗である。Fig. 1 shows the circuit diagram of Fig. 3 with DC/DCC/
When it can be predicted that it is possible to reliably estimate the lifespan of an inverter using Equation 2 for one Cz among electrolytic capacitors C8 to C1, a lifespan display circuit 2 is provided which receives the terminal voltage of the capacitor C2 as an input. It is something. In the display circuit 2, C is an AC capacitor that blocks DC voltage and passes only ripple AC voltage, LED is a light emitting diode, and R is a resistor for matching voltage applied to the light emitting diode.
従って前記発光ダイオードＬＥＤは、寿命表示回路２の
入力電圧すなわち前記コンデンサＣ２の劣化の進行と共
にその値の増大する前記リップル電圧の値に応じてその
点灯度合を変化させ、前記コンデンサの劣化度合従って
前記インバータの寿命表示を行うことになる。なお前記
コンデンサ０１〜Ｃ８が全て同様の劣化特性を有すると
推測される場合、前記発光ダイオード関連回路は前記コ
ンデンサ０１〜Ｃ，全てに設置される必要がある。Therefore, the light emitting diode LED changes its lighting degree in accordance with the input voltage of the life display circuit 2, that is, the value of the ripple voltage, which increases as the deterioration of the capacitor C2 progresses, and the degree of deterioration of the capacitor C2 changes accordingly. The lifespan of the inverter will be displayed. Note that if it is assumed that all of the capacitors 01 to C8 have similar deterioration characteristics, the light emitting diode related circuit needs to be installed in all of the capacitors 01 to C.
次に第２図は、第１図の寿命表示回路２において前記発
光ダイオードＬＥＤに対する逆電圧印加防止用のダイオ
ードＤ、を設は寿命表示回路２゜となしたものである。Next, in FIG. 2, a diode D for preventing the application of a reverse voltage to the light emitting diode LED is installed in the life display circuit 2 of FIG. 1 to form the life display circuit 2°.
この発明によれば、インバータの寿命決定の主要素であ
る直流平滑回路用電解コンデンサに対し、該コンデンサ
の端子電圧中のリップル電圧にて作動点灯する発光ダイ
オードを設けることにより、前記電解コンデンサの劣化
度の検知従って前記インバータの寿命予測が視覚的に簡
単に可能となり、前記インバータに対する適確且つ効率
的な予防保全ができ従ってインバータ運転の信頬性向上
を図ることができる。According to the present invention, by providing a light emitting diode that is activated and lit by the ripple voltage in the terminal voltage of the capacitor for an electrolytic capacitor for a DC smoothing circuit, which is a main element in determining the lifespan of an inverter, deterioration of the electrolytic capacitor is prevented. As a result, it is possible to visually and easily predict the life of the inverter, and it is possible to perform appropriate and efficient preventive maintenance on the inverter, thereby improving the reliability of inverter operation.
第１図と第２図とはこの発明の第１と第２の実施例を示
す回路図、第３図は従来のインバータ用直流制御電源回
路の回路図である。
１・・・Ｄ Ｃ／Ｄ Ｃコンバータ、２，２□・・・寿
命表示回路、Ｃａ、Ｃｔ ・・・コンデンサ、Ｃ，−Ｃ
８・・・電解コンデンサ、Ｄ、−Ｄ、・・・ダイオード
、ＬＥＤ・・・発光ダイオード、Ｒｒ、Ｒｔ・・・抵抗
、ＴＲＩ。
ＴＲ，・・・トランジスタ、Ｔ５・・・変圧器。
ＤＣ／ＤＣコンハ′−夕
ど
第
図
第
図
第
図1 and 2 are circuit diagrams showing first and second embodiments of the present invention, and FIG. 3 is a circuit diagram of a conventional DC control power supply circuit for an inverter. 1...D C/DC converter, 2, 2□...Life display circuit, Ca, Ct...Capacitor, C, -C
8... Electrolytic capacitor, D, -D,... Diode, LED... Light emitting diode, Rr, Rt... Resistor, TRI. TR,...transistor, T5...transformer. DC/DC Konha'-Evening Chart Chart Chart
Claims (1)
回路における直流出力電圧平滑用の電解コンデンサの全
部または適当に選定された幾つかに対し、コンデンサと
発光ダイオードとの直列接続回路をそれぞれ並列に接続
して成り、前記インバータの寿命関連主要素である前記
電解コンデンサの劣化状態を前記発光ダイオードの点灯
度合により表示することを特徴とするインバータの寿命
表示回路。1) A series connection circuit of a capacitor and a light emitting diode is connected in parallel to all or some appropriately selected electrolytic capacitors for DC output voltage smoothing in a single or multiple DC control power supply circuit in an inverter. An inverter life display circuit characterized in that the deterioration state of the electrolytic capacitor, which is a main element related to the life of the inverter, is displayed by the lighting degree of the light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250303A JP3000596B2 (en) | 1989-09-26 | 1989-09-26 | Inverter life display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250303A JP3000596B2 (en) | 1989-09-26 | 1989-09-26 | Inverter life display circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03117319A true JPH03117319A (en) | 1991-05-20 |
| JP3000596B2 JP3000596B2 (en) | 2000-01-17 |
Family
ID=17205905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1250303A Expired - Fee Related JP3000596B2 (en) | 1989-09-26 | 1989-09-26 | Inverter life display circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3000596B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10104298A (en) * | 1996-09-25 | 1998-04-24 | Sansha Electric Mfg Co Ltd | Evaluating device of ripple current carried to capacitor |
| JP2010193627A (en) * | 2009-02-18 | 2010-09-02 | Dx Antenna Co Ltd | Lifetime detection device and lifetime detection method |
| WO2011044827A1 (en) * | 2009-10-16 | 2011-04-21 | 华为终端有限公司 | Self-diagnosis method and system for wireless data service device |
| CN106093665A (en) * | 2016-08-05 | 2016-11-09 | 广州金升阳科技有限公司 | A kind of Switching Power Supply indicating circuit and using method thereof |
| JP2018004523A (en) * | 2016-07-06 | 2018-01-11 | 東洋電機製造株式会社 | Capacitor state determination device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789328U (en) * | 1980-11-20 | 1982-06-02 |
-
1989
- 1989-09-26 JP JP1250303A patent/JP3000596B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789328U (en) * | 1980-11-20 | 1982-06-02 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10104298A (en) * | 1996-09-25 | 1998-04-24 | Sansha Electric Mfg Co Ltd | Evaluating device of ripple current carried to capacitor |
| JP2010193627A (en) * | 2009-02-18 | 2010-09-02 | Dx Antenna Co Ltd | Lifetime detection device and lifetime detection method |
| WO2011044827A1 (en) * | 2009-10-16 | 2011-04-21 | 华为终端有限公司 | Self-diagnosis method and system for wireless data service device |
| JP2018004523A (en) * | 2016-07-06 | 2018-01-11 | 東洋電機製造株式会社 | Capacitor state determination device |
| CN106093665A (en) * | 2016-08-05 | 2016-11-09 | 广州金升阳科技有限公司 | A kind of Switching Power Supply indicating circuit and using method thereof |
| WO2018024035A1 (en) * | 2016-08-05 | 2018-02-08 | 广州金升阳科技有限公司 | Indicating circuit for switching power supply, and using method therefor |
| CN106093665B (en) * | 2016-08-05 | 2019-05-21 | 广州金升阳科技有限公司 | A kind of Switching Power Supply indicating circuit and its application method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3000596B2 (en) | 2000-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |