JPH0716596U - Partial smoothing circuit - Google Patents
Partial smoothing circuitInfo
- Publication number
- JPH0716596U JPH0716596U JP5115093U JP5115093U JPH0716596U JP H0716596 U JPH0716596 U JP H0716596U JP 5115093 U JP5115093 U JP 5115093U JP 5115093 U JP5115093 U JP 5115093U JP H0716596 U JPH0716596 U JP H0716596U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- circuit
- inrush current
- current
- diode
- 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.)
- Pending
Links
Landscapes
- Rectifiers (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
(57)【要約】
【目的】 部分平滑回路を改善し、突入電流防止用素子
または突入電流防止回路の小形化を図ると共に部分平滑
回路の効率並びに力率の向上を図る。
【構成】 コンデンサ（Ｃ１，Ｃ２）とダイオード（Ｄ
１，Ｄ２，Ｄ３）からなる部分平滑回路において、ダイ
オードＤ１と直列にコンデンサへの突入電流防止用素子
又は突入電流防止回路を接続したことを特徴としてい
る。
(57) [Abstract] [Purpose] To improve the partial smoothing circuit, to reduce the size of the inrush current preventing element or the inrush current preventing circuit, and to improve the efficiency and power factor of the partial smoothing circuit. [Configuration] Capacitor (C1, C2) and diode (D
1, D2, D3) is characterized in that an inrush current preventing element to the capacitor or an inrush current preventing circuit is connected in series with the diode D1.
Description
【０００１】[0001]
本考案は、交流の入力電圧を整流した後、平滑する部分平滑回路に関するもの で、突入電流防止用素子又は突入電流防止回路に負荷電流を流すことなしに、コ ンデンサへの電流のみを流すことにより、該素子又は該回路の消費電力が下げら れ、該素子の小型化並びに単価低減が出来、かつ回路の効率並びに力率を改善し ようとするものである。 The present invention relates to a partial smoothing circuit that smoothes after rectifying an AC input voltage, and allows only current to flow to a capacitor without flowing load current to an inrush current prevention element or inrush current prevention circuit. By doing so, the power consumption of the element or the circuit can be reduced, the element can be downsized and the unit price can be reduced, and the efficiency and power factor of the circuit can be improved.
【０００２】[0002]
ここで、部分平滑回路の電流のながれを理解するために、次のモード１からモ ード３の三つのモードに時分割して説明する。 モード１； 入力電圧がコンデンサＣ１（又はコンデンサＣ２）の電圧よりも低い領域で、 商用ダイオードＤＯを通してＡＣ入力より流れ込む電流は零で、負荷Ｚに流れる 電流ｉｚは全てコンデンサＣ１とコンデンサＣ２からの放電電流である。 モード１の等価回路は、図４で示される。 モード２； 入力電圧がコンデンサＣ１（又はコンデンサＣ２）の電圧を越え、コンデンサ Ｃ１とコンデンサＣ２の直列合成電圧よりも低い領域では、商用ダイオードＤＯ を通してＡＣ入力より流れ込む電流は全て負荷Ｚに流れ、コンデンサＣ１及びコ ンデンサＣ２への電流は零である。モード２の等価回路は図５で示される。 モード３； 入力電圧がコンデンサＣ１とコンデンサＣ２の直列合成電圧より高い領域では 、ＡＣ入力より商用ダイオードＤＯを通して流れる電流は、コンデンサＣ１とコ ンデンサＣ２に流れ込む充電電流と負荷Ｚに流れる電流の総和の電流が流れる。 モード３の等価回路は図６で示される。 Here, in order to understand the current flow of the partial smoothing circuit, the following modes 1 to 3 will be explained in time division. Mode 1; In the region where the input voltage is lower than the voltage of the capacitor C1 (or the capacitor C2), the current flowing from the AC input through the commercial diode DO is zero, and the current iz flowing to the load Z is all discharge from the capacitors C1 and C2. It is an electric current. The equivalent circuit for mode 1 is shown in FIG. Mode 2; In the region where the input voltage exceeds the voltage of the capacitor C1 (or the capacitor C2) and is lower than the series combined voltage of the capacitors C1 and C2, all the current flowing from the AC input through the commercial diode DO flows to the load Z, The current to C1 and capacitor C2 is zero. The equivalent circuit for mode 2 is shown in FIG. Mode 3; In the region where the input voltage is higher than the series combined voltage of the capacitors C1 and C2, the current flowing from the AC input through the commercial diode DO is the sum of the charging current flowing into the capacitors C1 and C2 and the current flowing into the load Z. An electric current flows. The equivalent circuit for mode 3 is shown in FIG.
【０００３】[0003]
【考案が解決しようとする課題】 以上のモード１からモード３の解析に基づき、従来回路の課題について説明す る。 従来の部分平滑回路の突入電流防止用素子（又は突入電流防止回路）ＲＣは、 図２又は図３に示される位置に接続されているため、等価回路図５（モード２） 及び図６（モード３）の図解より、突入電流防止用素子（又は突入電流防止回路 ）ＲＣに流れる電流は、コンデンサＣ１及びコンデンサＣ２への充電電流の他に 、負荷Ｚへの電流ｉｚも流れることが判る。 もともと上記素子（又は上記回路）ＲＣは、スイッチ投入時のコンデンサＣ１ 及びコンデンサＣ２への過大な充電電流を制限するものである。 しかしながら、従来回路の図２及び図３では、上記素子（又は上記回路）ＲＣ にコンデンサＣ１及びコンデンサＣ２への充電電流の他に負荷電流ｉｚが流れる から、不必要な電力をここで消費することになる。このため、従来回路の図２及 び図３では、上記素子（又は上記回路）の定格電力値が大きくなりコストも高く なり、かつ回路の効率及び力率も悪い。Problems to be Solved by the Invention Problems of the conventional circuit will be described based on the analysis of Modes 1 to 3 described above. Since the inrush current prevention element (or inrush current prevention circuit) RC of the conventional partial smoothing circuit is connected to the position shown in FIG. 2 or 3, equivalent circuit diagrams 5 (mode 2) and 6 (mode) are shown. From the illustration of 3), it is understood that the current flowing through the inrush current prevention element (or inrush current prevention circuit) RC is not only the charging current for the capacitors C1 and C2 but also the current iz for the load Z. Originally, the element (or the circuit) RC limits an excessive charging current to the capacitors C1 and C2 when the switch is turned on. However, in FIGS. 2 and 3 of the conventional circuit, since the load current iz flows in the element (or the circuit) RC in addition to the charging current to the capacitors C1 and C2, unnecessary power is consumed here. become. For this reason, in FIGS. 2 and 3 of the conventional circuit, the rated power value of the element (or the circuit) is increased, the cost is increased, and the efficiency and power factor of the circuit are poor.
【０００４】[0004]
本考案は、上述の課題を解消したものであり、図１のようにダイオードＤ１と 直列に突入電流防止用素子、又は突入電流防止回路ＲＣを接続することにより、 該素子（又は該回路）ＲＣに、負荷電流ｉｚを流すことなく、本来の目的である コンデンサＣ１及びコンデンサＣ２への充電電流のみを流すようにするものであ る。 すなわち、第１のコンデンサＣ１の負極（−）と第２のコンデンサＣ２の正極 （＋）との間に第１のダイオードＤ１が充電電流のながれる方向に接続され、か つ第１のコンデンサＣ１の負極（−）と第２のコンデンサＣ２の負極（−）との 間に、第２のダイオードＤ２がコンデンサＣ１の放電電流の流れる方向に接続さ れ、さらに第１のコンデンサＣ１の正極（＋）と第２のコンデンサＣ２の正極（ ＋）との間に第３のダイオードＤ３がコンデンサＣ２の放電電流の流れる方向に 接続されてなる部分平滑回路において、上記第１のコンデンサＣ１の負極と第２ のコンデンサＣ２の正極との間に接続された第１のダイオードＤ１と直列に、コ ンデンサへの突入電流防止用素子、又は突入電流防止回路を挿入してなる部分平 滑回路である。 The present invention solves the above-mentioned problems, and by connecting an inrush current preventing element or an inrush current preventing circuit RC in series with a diode D1 as shown in FIG. 1, the element (or the circuit) RC is connected. In addition, only the charging current to the capacitors C1 and C2, which is the original purpose, is allowed to flow without flowing the load current iz. That is, the first diode D1 is connected between the negative electrode (−) of the first capacitor C1 and the positive electrode (+) of the second capacitor C2 in the charging current flow direction, and The second diode D2 is connected between the negative electrode (−) and the negative electrode (−) of the second capacitor C2 in the direction in which the discharge current of the capacitor C1 flows, and further, the positive electrode (+) of the first capacitor C1. In a partial smoothing circuit in which the third diode D3 is connected between the positive electrode (+) of the second capacitor C2 and the discharge current of the capacitor C2, the negative electrode of the first capacitor C1 and the second capacitor Is a partial smoothing circuit in which a device for preventing inrush current to the capacitor or a circuit for preventing inrush current is inserted in series with the first diode D1 connected to the positive electrode of the capacitor C2.
【０００５】[0005]
本考案は、上述のように構成されているので、突入電流防止用素子又は、突入 電流防止用回路には、コンデンサへの充電電流のみが流れ負荷電流は流れない。 これに対して、従来回路の突入電流防止用素子又は突入電流防止用回路には、 コンデンサへの充電電流と負荷電流の両者が流れるから、本考案回路は、下記に 示す計算式の値の消費電力が軽減される。 突入電流防止用素子又は突入電流防止用回路のインピーダンスをＺ、コンデン サへの充電電流をｉｃ、負荷電流をｉＲとすると、軽減される消費電力△Ｐｃは 次式で表すことが出来る。 △Ｐｃ＝（ｉｃ＋ｉＲ）2 Ｚ−ｉｃ2 Ｚ ＝（ｉＲ2 ＋２ｉＲ・ｉｃ）Ｚ 突入電流防止用素子（又は突入電流防止回路）ＲＣの小型化及びコスト低減が でき、回路の効率及び力率を高めることができる。Since the present invention is configured as described above, only the charging current to the capacitor flows and the load current does not flow in the inrush current prevention element or the inrush current prevention circuit. On the other hand, both the charging current to the capacitor and the load current flow through the inrush current prevention element or the inrush current prevention circuit of the conventional circuit. Power is reduced. When the impedance of the inrush current prevention element or the inrush current prevention circuit is Z, the charging current to the capacitor is ic, and the load current is iR, the reduced power consumption ΔPc can be expressed by the following equation. ΔPc = (ic + iR) 2 Z−ic 2 Z = (iR 2 + 2iR · ic) Z The inrush current prevention element (or inrush current prevention circuit) RC can be downsized and the cost can be reduced, and the circuit efficiency and power factor can be reduced. Can be increased.
【０００６】[0006]
本考案の実施例の基本回路を図１に示す。図中のＲｃ記号は突入電流防止用素 子又は突入電流防止用回路で、その実施例のいくつかを図８に示す。一般的に、 低電力仕様の場合にはＲｃは抵抗器が、高電力仕様の場合にはＲＣは抵抗器Ｒと サイリスタＳ等による回路ユニットが、又、低電力で突入電流の厳しい仕様の場 合にはパワーサーミスタが適している。 尚、抵抗器Ｒとパワーサーミスタとの組合せなども同様の考え方に基づくもの である。 The basic circuit of the embodiment of the present invention is shown in FIG. The Rc symbol in the figure is an element for preventing inrush current or a circuit for preventing inrush current, and some examples thereof are shown in FIG. Generally, in the case of low power specifications, Rc is a resistor, in the case of high power specifications RC is a circuit unit consisting of a resistor R and thyristor S, and in the case of low power and severe inrush current specifications. A power thermistor is suitable for this case. The combination of the resistor R and the power thermistor is based on the same idea.
【０００７】[0007]
本考案回路の突入電流防止用素子又は突入電流防止用回路の消費電力は、従来 回路のそれに比べ少ないので、素子（部品）の形状を小型化し、コストを下げる ことができると共に回路の消費電力を下げる効果がある。 The power consumption of the inrush current prevention element of the circuit of the present invention or the inrush current prevention circuit is smaller than that of the conventional circuit, so that the shape of the element (component) can be downsized and the cost can be reduced and the power consumption of the circuit can be reduced. Has the effect of lowering.
【図１】本考案の一実施例の部分平滑回路図である。FIG. 1 is a partial smoothing circuit diagram of an embodiment of the present invention.
【図２】従来の部分平滑回路図である。FIG. 2 is a conventional partial smoothing circuit diagram.
【図３】従来の他の部分平滑回路図である。FIG. 3 is another conventional partial smoothing circuit diagram.
【図４】部分平滑回路の時分割モード１の等価回路図で
ある。FIG. 4 is an equivalent circuit diagram of time division mode 1 of the partial smoothing circuit.
【図５】部分平滑回路の時分割モード２の等価回路図で
ある。FIG. 5 is an equivalent circuit diagram of time division mode 2 of the partial smoothing circuit.
【図６】部分平滑回路の時分割モード３の等価回路図で
ある。FIG. 6 is an equivalent circuit diagram of time division mode 3 of the partial smoothing circuit.
【図７】部分平滑回路の各部の電圧波形および整流電流
波形の説明図である。FIG. 7 is an explanatory diagram of a voltage waveform and a rectified current waveform of each part of the partial smoothing circuit.
【図８】本考案に係る突入電流防止用素子または突入電
流防止回路の説明図である。FIG. 8 is an explanatory diagram of an inrush current prevention element or an inrush current prevention circuit according to the present invention.
Ｃ１ 第１のコンデンサ Ｃ２ 第２のコンデンサ Ｄ１ 第１のダイオード Ｄ２ 第２のダイオード Ｄ３ 第３のダイオード Ｄ０ 商用ダイオード Ｚ 負荷 Ｓ１ 等価回路の仮想上のスイッチ Ｓ２ 等価回路の仮想上のスイッチ ＲＣ 突入電流防止用素子又は回路 Ｒ 抵抗器 Ｓ サイリスタ C1 1st capacitor C2 2nd capacitor D1 1st diode D2 2nd diode D3 3rd diode D0 Commercial diode Z load S1 Virtual switch of equivalent circuit S2 Virtual switch of equivalent circuit RC Inrush current prevention Element or circuit R resistor S thyristor
Claims (1)
のコンデンサＣ２の正極（＋）との間に第１のダイオー
ドＤ１が充電電流の流れる方向に接続され、かつ第１の
コンデンサＣ１の負極（−）と第２のコンデンサＣ２の
負極（−）との間に、第２のダイオードＤ２がコンデン
サＣ１の放電電流の流れる方向に接続され、さらに第１
のコンデンサＣ１の正極（＋）と第２のコンデンサＣ２
の正極（＋）との間に第３のダイオードＤ３がコンデン
サＣ２の放電電流の流れる方向に接続されてなる部分平
滑回路において、上記第１のコンデンサＣ１の負極と第
２のコンデンサＣ２の正極との間に接続された第１のダ
イオードＤ１と直列にコンデンサへの突入電流防止用素
子又は突入電流防止回路を挿入してなる部分平滑回路。1. A negative electrode (-) and a second capacitor of a first capacitor C1.
The first diode D1 is connected between the positive electrode (+) of the second capacitor C2 and the positive electrode (+) of the second capacitor C2, and the negative electrode (−) of the first capacitor C1 and the negative electrode (−) of the second capacitor C2 are connected. The second diode D2 is connected between the two in the direction of the discharge current of the capacitor C1.
Positive electrode (+) of the second capacitor C1 and the second capacitor C2
In the partial smoothing circuit in which the third diode D3 is connected between the positive electrode (+) and the positive electrode (+) in the direction of the discharge current of the capacitor C2, the negative electrode of the first capacitor C1 and the positive electrode of the second capacitor C2 are connected. A partial smoothing circuit in which a device for preventing inrush current to the capacitor or a circuit for preventing inrush current is inserted in series with the first diode D1 connected between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5115093U JPH0716596U (en) | 1993-08-25 | 1993-08-25 | Partial smoothing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5115093U JPH0716596U (en) | 1993-08-25 | 1993-08-25 | Partial smoothing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0716596U true JPH0716596U (en) | 1995-03-17 |
Family
ID=12878794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5115093U Pending JPH0716596U (en) | 1993-08-25 | 1993-08-25 | Partial smoothing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013069552A (en) * | 2011-09-22 | 2013-04-18 | Panasonic Corp | Light-emitting element lighting device and illuminating fixture using the same |
-
1993
- 1993-08-25 JP JP5115093U patent/JPH0716596U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013069552A (en) * | 2011-09-22 | 2013-04-18 | Panasonic Corp | Light-emitting element lighting device and illuminating fixture using the same |
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