JPH0287931A - Snubber circuit - Google Patents
Snubber circuitInfo
- Publication number
- JPH0287931A JPH0287931A JP63239156A JP23915688A JPH0287931A JP H0287931 A JPH0287931 A JP H0287931A JP 63239156 A JP63239156 A JP 63239156A JP 23915688 A JP23915688 A JP 23915688A JP H0287931 A JPH0287931 A JP H0287931A
- Authority
- JP
- Japan
- Prior art keywords
- snubber circuit
- voltage
- circuit
- diode
- snubber
- 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
- 238000004804 winding Methods 0.000 claims abstract 2
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Power Conversion In General (AREA)
- Inverter Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は逆変換回路のスナバ−回路に関するものである
。以下図面により説明する。第１図は従来の逆変換回路
のスナバ−回路である。第２図は第１図においてＳＩ
ＯＦＦ、３２ ＯＮ時の等価回路であり第３図は第１
図において３１ ＯＮ、８２ ＯＦＦ 時の等価回路図
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a snubber circuit for an inverse conversion circuit. This will be explained below with reference to the drawings. FIG. 1 shows a snubber circuit of a conventional inverse conversion circuit. Figure 2 is SI in Figure 1.
The equivalent circuit when OFF and 32 ON is shown in Figure 3.
In the figure, it is an equivalent circuit diagram when 31 is ON and 82 is OFF.
第１図において、Ｂは電源、Ｔは変圧器、３１Ｓ２はス
イッチング素子、Ｄ１〜Ｄ４はダイオード、Ｃ１はコン
デンサ、Ｒ１は抵抗である。ここでスイッチング素子Ｓ
ｌ 、Ｓ２は交互にＯＮ、０［’Ｆを繰返し直流電力を
交流電力に変換する。In FIG. 1, B is a power source, T is a transformer, 31S2 is a switching element, D1 to D4 are diodes, C1 is a capacitor, and R1 is a resistor. Here, switching element S
l and S2 are alternately turned ON and 0['F repeatedly to convert DC power to AC power.
第２図はＳｔ ＯＦＦ、３２ ＯＮの状態を示し、この
時の動作を説明する。電源電圧をＥとすると、変圧器Ｔ
の１次側の両端に２Ｅの電圧が発生し、スイッチング素
子の開閉時のサージ電圧と２Ｅの電圧がダイオードＤ４
、Ｄｌを通しスナバ−回路のコンデンサＣと抵抗Ｒ１に
印加される。FIG. 2 shows the state of St OFF and 32 ON, and the operation at this time will be explained. If the power supply voltage is E, the transformer T
A voltage of 2E is generated across the primary side of the diode D4, and the surge voltage at the time of opening and closing of the switching element and the voltage of 2E are
, Dl to the capacitor C and resistor R1 of the snubber circuit.
次に第３図は５ＩＯＮ１８２ＯＦＦの状態を示し、第２
図の場合と同様の動作を繰り返し、抵抗の熱損失が過大
となる欠点があった。Next, Figure 3 shows the state of 5ION182OFF, and the second
The same operation as in the case shown in the figure was repeated, and the disadvantage was that the heat loss in the resistor was excessive.
本発明はスイッチング素子のＯＮ、ＯＦＦ時のサジ電圧
の吸収を損うことなく上述の欠点を解消するもので、ス
ナバ−回路に印加される電圧を軽減し常時における抵抗
損失分の減少に効果のあるものである。The present invention solves the above-mentioned drawbacks without impairing the absorption of surge voltage when the switching element is turned ON and OFF, and is effective in reducing the voltage applied to the snubber circuit and the constant resistance loss. It is something.
第４図は本発明による逆変換回路のスナバ−回路の１実
施例である。FIG. 4 shows one embodiment of the snubber circuit of the inverse conversion circuit according to the present invention.
第５図は第４図においてＳＩ ＯＦＦ、３２ＯＮ時の等
価回路であり第６図は３１ ＯＮ％８２ ＯＦＦ時の等
価回路である。図中、第１図、第２図、第３図と同一符
号は同等部品を示す。FIG. 5 is an equivalent circuit when SI is OFF and 32 ON in FIG. 4, and FIG. 6 is an equivalent circuit when SI is 31 ON%82 OFF. In the figures, the same symbols as in FIGS. 1, 2, and 3 indicate equivalent parts.
第５図について、その動作を説明すると、変圧器Ｔの１
次側の両端に２Ｅの電圧が発生しスイッチ素子Ｓ１、Ｓ
２の開閉時のサージ電圧とＥの電圧がダイオード６を通
しスナバ−回路に印加される。To explain the operation of FIG. 5, 1 of transformer T
A voltage of 2E is generated across the next side of the switching elements S1 and S.
The surge voltage at the time of opening/closing of 2 and the voltage of E are applied to the snubber circuit through the diode 6.
第６図についても同様である。このようにスナバ回路に
かかる電圧Ｅはその一端が電源（電池）に接続されてい
るため電池電圧分少く印加される為、スナバ−回路の抵
抗の熱損失は軽減出来（従来比１／４）、効率も改善さ
れ有効である。The same applies to FIG. In this way, since one end of the voltage E applied to the snubber circuit is connected to the power source (battery), less battery voltage is applied, so the heat loss of the snubber circuit's resistance can be reduced (1/4 compared to the conventional one). , efficiency is also improved and effective.
第５図、 本発明の逆変換回路のスナバ 回路に 於いて 第６図はその等価回路を示す。Figure 5, Snubber of inverse conversion circuit of the present invention to the circuit At FIG. 6 shows its equivalent circuit.
Ｂ・・電源、Ｔ・・・変圧器、３１．８２・・スイッチ
ング素子、ＤＩ−Ｄ６・・・ダイオード、Ｃ１・・・コ
ンデンサＲ１−・・抵抗B...Power supply, T...Transformer, 31.82...Switching element, DI-D6...Diode, C1...Capacitor R1-...Resistance
Claims (1)
変圧器巻線の接続点にそれぞれダイオードのアノードを
接続し、該ダイオードのカソードを、コンデンサと抵抗
を並列に接続したスナバー回路の１端に接続し、該スナ
バー回路の他端は電源の正極に接続したことを特徴とす
るスナバー回路。The anode of a diode is connected to the connection point between the two switch elements of the center-tapped inversion circuit and the transformer winding, and the cathode of the diode is connected to one end of a snubber circuit in which a capacitor and a resistor are connected in parallel. and the other end of the snubber circuit is connected to a positive terminal of a power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63239156A JPH0287931A (en) | 1988-09-24 | 1988-09-24 | Snubber circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63239156A JPH0287931A (en) | 1988-09-24 | 1988-09-24 | Snubber circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0287931A true JPH0287931A (en) | 1990-03-28 |
Family
ID=17040579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63239156A Pending JPH0287931A (en) | 1988-09-24 | 1988-09-24 | Snubber circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0287931A (en) |
-
1988
- 1988-09-24 JP JP63239156A patent/JPH0287931A/en active Pending
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