JPS6155339B2 - - Google Patents
Info
- Publication number
- JPS6155339B2 JPS6155339B2 JP7185079A JP7185079A JPS6155339B2 JP S6155339 B2 JPS6155339 B2 JP S6155339B2 JP 7185079 A JP7185079 A JP 7185079A JP 7185079 A JP7185079 A JP 7185079A JP S6155339 B2 JPS6155339 B2 JP S6155339B2
- Authority
- JP
- Japan
- Prior art keywords
- scr
- commutation
- transformer
- capacitor
- power supply
- 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
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 5
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 description 9
- 101150105073 SCR1 gene Proteins 0.000 description 9
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 description 9
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 description 4
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
- H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
- H02M5/22—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/25—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/257—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
【発明の詳細な説明】
本発明はチヨツパ回路に関し、特にDCコンバ
ータに使用するに適したサイリスタ式チヨツパ回
路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chopper circuit, and more particularly to a thyristor type chopper circuit suitable for use in a DC converter.
第１図に従来のサイリスタ式チヨツパ回路の１
例を示す。まずSCR１をオンにすると直流電源
Ｅから抵抗Ｒ→負荷トランスＬ→SCR１→転流
トランス１次巻線ｔp→電源Ｅの回路で負荷電流
が流れる。これにより転流トランス２次側ｔsに
電圧が誘起され、ｔs→ダイオードＤ１→転流コ
ンデンサＣ→SCR１→ｔpの回路に電流が流れ、
転流コンデンサＣが図示極性に充電される。この
場合、負荷電流が減少し、ｔsの誘起電圧が減少
しても、ダイオードＤ１があるためにコンデンサ
Ｃの充電電圧は減少せず、後述するように、
SCR１をターンオフするに十分なエネルギを維
持する。 Figure 1 shows a conventional thyristor chopper circuit.
Give an example. First, when SCR1 is turned on, a load current flows from the DC power supply E through the circuit of resistor R → load transformer L → SCR1 → commutation transformer primary winding t p → power supply E. As a result, a voltage is induced on the secondary side of the commutating transformer t s , and a current flows through the circuit of t s → diode D1 → commutating capacitor C → SCR1 → t p ,
Commutation capacitor C is charged to the polarity shown. In this case, even if the load current decreases and the induced voltage at t s decreases, the charging voltage of the capacitor C does not decrease because of the presence of the diode D1, and as will be described later,
Maintain enough energy to turn off SCR1.
つぎにSCR２がトリガされると、SCR１はコ
ンデンサＣの端子電圧によつて強制的にターンオ
フさせられる。同時に、コンデンサＣはSCR２
→ｔp→Ｅ→Ｒ→Ｌ→Ｃの回路で放電する。この
放電回路には負荷トランスＬのインダクタンスお
よび容量Ｃがあるため、前記放電電流は振動的に
変化し、逆方向の放電路はＣ→Ｌ→Ｒ→Ｅ→ｔs
→Ｄ１→Ｃとなる。 Next, when SCR2 is triggered, SCR1 is forced to turn off by the terminal voltage of capacitor C. At the same time, capacitor C is SCR2
→t p → Discharge in the circuit of E → R → L → C. Since this discharge circuit has the inductance and capacitance C of the load transformer L, the discharge current changes oscillatingly, and the discharge path in the opposite direction is C→L→R→E→t s
→D1→C.
以上のように、従来のチヨツパ回路では転流コ
ンデンサＣの放電電流が振動するために、続いて
SCR１がトリガされる際に、図示とは反対極性
にコンデンサＣに蓄積されている電荷が少なくな
り、転流動作を確実に遂行させるに十分なエネル
ギを維持できないことがある。すなわち、従来の
チヨツパ回路では転流が不安定、不確実になる欠
点がある。 As mentioned above, in the conventional chopper circuit, the discharge current of the commutating capacitor C oscillates, so that
When SCR1 is triggered, the charge stored in capacitor C, with the opposite polarity as shown, may be so low that it may not be able to maintain enough energy to reliably perform the commutation operation. That is, the conventional chopper circuit has the disadvantage that commutation is unstable and uncertain.
本発明は前述の欠点を改善するために、転流コ
ンデンサＣの逆方向放電を阻止する手段を設ける
ことにより、コンデンサＣの逆極性充電を確実に
し、サイリスタの転流を確実にしたものである。 In order to improve the above-mentioned drawbacks, the present invention provides means for preventing reverse discharge of the commutation capacitor C, thereby ensuring reverse polarity charging of the capacitor C and ensuring commutation of the thyristor. .
第２図に本発明の１実施例を示す。第１図と比
較すれば明らかなように、第１図の電源Ｅと転流
トランスＴとの間にダイオードＤ２を接続したも
のである。 FIG. 2 shows one embodiment of the present invention. As is clear from a comparison with FIG. 1, a diode D2 is connected between the power source E and the commutating transformer T in FIG.
SCR２をトリガしてコンデンサＣの充電電荷
を放電させ、SCR１をターンオフさせる際、第
１図におけると同様に、その放電電流はSCR２
→ｔp→Ｄ２→Ｅ→Ｒ→Ｌ→Ｃの回路に流れる。
明らかなように、この場合はダイオードＤ２の挿
入により逆方向電流が遮断されるので、転流コン
デンサＣはLC共振電圧の波高値まで、図示とは
逆極性に充電されることになる。 When SCR2 is triggered to discharge the charge on capacitor C and turn off SCR1, the discharge current is
→t p →Flows to the circuit of D2 → E → R → L → C.
As is clear, in this case, the reverse current is cut off by inserting the diode D2, so the commutating capacitor C is charged to the peak value of the LC resonance voltage in a polarity opposite to that shown.
したがつて、続いてSCR１がトリガされる際
に、十分に大きいエネルギがコンデンサＣから供
給されることになり、転流動作が大幅に安定化さ
れる。 Therefore, when SCR1 is subsequently triggered, a sufficiently large amount of energy will be supplied from capacitor C, and the commutation operation will be significantly stabilized.
第１図は従来のサイリスタ式チヨツパの回路
図、第２図は本発明の１実施例の回路図である。
SCR１，SCR２……サイリスタ、Ｔ……転流
トランス、Ｌ……負荷トランス。
FIG. 1 is a circuit diagram of a conventional thyristor type chopper, and FIG. 2 is a circuit diagram of an embodiment of the present invention. SCR1, SCR2...Thyristor, T...Commuting transformer, L...Load transformer.
Claims (1)
1SCRおよび転流トランス１次巻線と、第1SCR
と転流トランス１次巻線の接続点に第1SCRと並
列接続状態で接続された第2SCRと、第１、第
2SCRの反対側電極間に接続された転流コンデン
サと、１極を前記１次巻線に共通接続された転流
トランス２次巻線の他極および転流コンデンサと
第2SCRとの接続点間に第2SCRと同極性に接続
されたダイオードとよりなるチヨツパ回路におい
て、転流トランスの共通接続極および第1SCRと
コンデンサの接続点間の電源を含む直列回路に、
電源電流に対して順方向に挿入されたダイオード
を具備したことを特徴とするチヨツパ回路。1 A load transformer connected in series to a DC power supply,
1SCR and commutation transformer primary winding, 1SCR
and the second SCR connected in parallel with the first SCR at the connection point of the primary winding of the commutation transformer, and the first and second SCR.
The commutation capacitor connected between the opposite electrodes of the 2SCR, the other pole of the commutation transformer secondary winding whose one pole is commonly connected to the primary winding, and the connection point between the commutation capacitor and the 2nd SCR. In a chopper circuit consisting of a diode connected with the same polarity as the second SCR, in a series circuit including the common connection pole of the commutating transformer and the power supply between the first SCR and the connection point of the capacitor,
A chopper circuit characterized by comprising a diode inserted in the forward direction with respect to the power supply current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7185079A JPS55166479A (en) | 1979-06-09 | 1979-06-09 | Chopper circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7185079A JPS55166479A (en) | 1979-06-09 | 1979-06-09 | Chopper circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55166479A JPS55166479A (en) | 1980-12-25 |
| JPS6155339B2 true JPS6155339B2 (en) | 1986-11-27 |
Family
ID=13472418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7185079A Granted JPS55166479A (en) | 1979-06-09 | 1979-06-09 | Chopper circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55166479A (en) |
-
1979
- 1979-06-09 JP JP7185079A patent/JPS55166479A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55166479A (en) | 1980-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3968420A (en) | Chopper circuit arrangement | |
| JPS6155339B2 (en) | ||
| JPH0379948B2 (en) | ||
| JPH0681498B2 (en) | Snubber circuit | |
| US3374412A (en) | Control system for regulating current pulses to battery powered electric motors | |
| JPS6021659Y2 (en) | multiple spark igniter | |
| JPS6021658Y2 (en) | multiple spark igniter | |
| JP2893466B2 (en) | Push-pull inverter | |
| JPS6319591Y2 (en) | ||
| JP2636330B2 (en) | Snubber circuit | |
| JPS6034927Y2 (en) | spark discharge circuit | |
| SU485434A1 (en) | Thyristor voltage regulator | |
| JPS6319733Y2 (en) | ||
| JPS5914822Y2 (en) | switching circuit | |
| SU585604A1 (en) | Key with inductive load | |
| JPH0713431Y2 (en) | Power supply circuit | |
| JPH03804Y2 (en) | ||
| JPH0429241Y2 (en) | ||
| JPS633118Y2 (en) | ||
| SU464928A1 (en) | Battery Charger | |
| JPS5916169B2 (en) | igniter | |
| JP2799029B2 (en) | Double voltage charging circuit | |
| JP2706531B2 (en) | Discharge lamp lighting device | |
| JPS596585B2 (en) | transistor drive circuit | |
| JPH078138B2 (en) | Switching element circuit |