JPS5612860A - Chopper circuit - Google Patents

Chopper circuit

Info

Publication number
JPS5612860A
JPS5612860A JP8589379A JP8589379A JPS5612860A JP S5612860 A JPS5612860 A JP S5612860A JP 8589379 A JP8589379 A JP 8589379A JP 8589379 A JP8589379 A JP 8589379A JP S5612860 A JPS5612860 A JP S5612860A
Authority
JP
Japan
Prior art keywords
power supply
commutation
reactor
energy
capacitor
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
Application number
JP8589379A
Other languages
Japanese (ja)
Inventor
Kinzo Aonuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8589379A priority Critical patent/JPS5612860A/en
Publication of JPS5612860A publication Critical patent/JPS5612860A/en
Pending legal-status Critical Current

Links

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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac 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)

Abstract

PURPOSE:To return efficiently commutation energy of the chopper circuit to a power supply without wastefully consuming the commutation energy by providing a commutation capacitor in parallel with a load to return the commutation reactor energy to the the power supply. CONSTITUTION:When a gate signal is applied to a main SCR 5, an electric current flows from a power supply 1 through an inverted L type filter FIL, a main SCR 5, a commutation reactor 6 and a commutation reverse current preventive diode 9 to a load 11. At this time the capacitor 8 is charged to a power supply voltage. When a gate signal is applied to an auxiliary SCR7 at this time, charge stored in the capacitor 8 becomes resonant current through the reactor 6 and the SCR 7. Then, the induced voltage of the reactor 6 allows the main SCR5 to become off state, and the load 11 is thus isolated from the power supply 1. The energy stored in the reactor 6 thereafter is returned through the diode 4 to the power supply. In this manner the commutation energy can be efficiently returned to the power supply.
JP8589379A 1979-07-09 1979-07-09 Chopper circuit Pending JPS5612860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8589379A JPS5612860A (en) 1979-07-09 1979-07-09 Chopper circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8589379A JPS5612860A (en) 1979-07-09 1979-07-09 Chopper circuit

Publications (1)

Publication Number Publication Date
JPS5612860A true JPS5612860A (en) 1981-02-07

Family

ID=13871558

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8589379A Pending JPS5612860A (en) 1979-07-09 1979-07-09 Chopper circuit

Country Status (1)

Country Link
JP (1) JPS5612860A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6173156A (en) * 1984-09-19 1986-04-15 Toray Ind Inc Water-free lithographic plate
JPH01214839A (en) * 1988-02-23 1989-08-29 Fuji Photo Film Co Ltd Photosensitive lithographic plate free from damping water
JPH07110574A (en) * 1993-12-13 1995-04-25 Toray Ind Inc Production of waterless lithographic printing plate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6173156A (en) * 1984-09-19 1986-04-15 Toray Ind Inc Water-free lithographic plate
JPH051934B2 (en) * 1984-09-19 1993-01-11 Toray Industries
JPH01214839A (en) * 1988-02-23 1989-08-29 Fuji Photo Film Co Ltd Photosensitive lithographic plate free from damping water
JPH07110574A (en) * 1993-12-13 1995-04-25 Toray Ind Inc Production of waterless lithographic printing plate

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