JPS55144777A - Thyristor power control system - Google Patents

Thyristor power control system

Info

Publication number
JPS55144777A
JPS55144777A JP5037179A JP5037179A JPS55144777A JP S55144777 A JPS55144777 A JP S55144777A JP 5037179 A JP5037179 A JP 5037179A JP 5037179 A JP5037179 A JP 5037179A JP S55144777 A JPS55144777 A JP S55144777A
Authority
JP
Japan
Prior art keywords
bridge
current
circuit
correction
ripple
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
Application number
JP5037179A
Other languages
Japanese (ja)
Other versions
JPS6212748B2 (en
Inventor
Katsuji Murai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5037179A priority Critical patent/JPS55144777A/en
Publication of JPS55144777A publication Critical patent/JPS55144777A/en
Publication of JPS6212748B2 publication Critical patent/JPS6212748B2/ja
Granted 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal 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
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal 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

Abstract

PURPOSE:To prevent the unbalance of each bridge by equally distributing the add value of the current of polyphase rectifier bridges connected in parallel to each bridge to permit control at the same control voltage wherein a correction circuit is provided to correct variations in the characteristics. CONSTITUTION:Addition is done after detecting the current Ii (i=1, 2,...n) of each bridge and amplifying the current by an amplifier circuit. The added current is equivalent to the load current and will become the waveform with extremely low ripple if the time constant of the load is large compared with the ripple width of the power voltage. Therefore, this signal is changed to 1/n by a division circuit 30 to work as a feed back signal and control is done in common with a control voltage Ec. And the ripple is reduced by properly selecting the reactor L1 inserted into each bridge. On the other hand, rectifier transformers in each bridge and automatic pulse phase circuits show variations. Therefore, an Ec correction circuit 31 which corrects the variations in the characteristics is provided and a correction control voltage DELTAEci (i=1, 2,...n) is applied to each circuit to perform the correction in the range of zero of the sum total of DELTAEci.
JP5037179A 1979-04-25 1979-04-25 Thyristor power control system Granted JPS55144777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5037179A JPS55144777A (en) 1979-04-25 1979-04-25 Thyristor power control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5037179A JPS55144777A (en) 1979-04-25 1979-04-25 Thyristor power control system

Publications (2)

Publication Number Publication Date
JPS55144777A true JPS55144777A (en) 1980-11-11
JPS6212748B2 JPS6212748B2 (en) 1987-03-20

Family

ID=12857022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5037179A Granted JPS55144777A (en) 1979-04-25 1979-04-25 Thyristor power control system

Country Status (1)

Country Link
JP (1) JPS55144777A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576569A (en) * 1980-06-13 1982-01-13 Mitsubishi Electric Corp Connection of multiphase rectifiers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH033941A (en) * 1989-05-31 1991-01-10 Mazda Motor Corp Fuel injection device of engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841932U (en) * 1971-09-23 1973-05-29
JPS4978860A (en) * 1972-12-11 1974-07-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841932U (en) * 1971-09-23 1973-05-29
JPS4978860A (en) * 1972-12-11 1974-07-30

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576569A (en) * 1980-06-13 1982-01-13 Mitsubishi Electric Corp Connection of multiphase rectifiers
JPS6311870B2 (en) * 1980-06-13 1988-03-16 Mitsubishi Electric Corp

Also Published As

Publication number Publication date
JPS6212748B2 (en) 1987-03-20

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