JPS5644382A - Controlling method of reactive power compensating type cyclo converter - Google Patents

Controlling method of reactive power compensating type cyclo converter

Info

Publication number
JPS5644382A
JPS5644382A JP11912279A JP11912279A JPS5644382A JP S5644382 A JPS5644382 A JP S5644382A JP 11912279 A JP11912279 A JP 11912279A JP 11912279 A JP11912279 A JP 11912279A JP S5644382 A JPS5644382 A JP S5644382A
Authority
JP
Japan
Prior art keywords
reactive power
current
converter
capacitor
power
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
JP11912279A
Other languages
Japanese (ja)
Other versions
JPS5914988B2 (en
Inventor
Shigeru Tanaka
Susumu Tadakuma
Yoshiaki Tamura
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 JP54119122A priority Critical patent/JPS5914988B2/en
Publication of JPS5644382A publication Critical patent/JPS5644382A/en
Publication of JPS5914988B2 publication Critical patent/JPS5914988B2/en
Expired 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
    • 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
    • H02M5/27—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 for conversion of frequency

Abstract

PURPOSE:To eliminate the variations in the reactive power without any special reactive power compensating device by controlling a circulating current so that a lagged reactive power of a cyclo converter and an advanced reactive power of a phase advancing capacitor are cancelled between each other. CONSTITUTION:When AC current of a variable frequency is fed to a single phase load LOAD, the phase advancing capacitor C is connected to a power source of the cyclo converter CC. A constant advanced current Icap is provided to the capacitor C and an input current ICC to the converter CC. On the other hand, according to a deviation epsilon2 between a circulating current command value I0* based on a reactive power Q detected from a bus BUS by means of a reactive power arithmetic unit VAR and a circulating current I0 detected from the direction of a load current IL by a Schmitt circuit SH, the circulating current of the converter CC is controlled so that a lagged reactive power and an advance reactive power of the phase advance capacitor C are balanced to reduce the reactive power to zero. This can invariably control the basic wave power factor to be 1 viewed from the side of the power source eliminating variation in the reactive power without any compensating device such as thyristor bridge circuit.
JP54119122A 1979-09-17 1979-09-17 Control method for reactive power compensation type cycloconverter Expired JPS5914988B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54119122A JPS5914988B2 (en) 1979-09-17 1979-09-17 Control method for reactive power compensation type cycloconverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54119122A JPS5914988B2 (en) 1979-09-17 1979-09-17 Control method for reactive power compensation type cycloconverter

Publications (2)

Publication Number Publication Date
JPS5644382A true JPS5644382A (en) 1981-04-23
JPS5914988B2 JPS5914988B2 (en) 1984-04-06

Family

ID=14753474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54119122A Expired JPS5914988B2 (en) 1979-09-17 1979-09-17 Control method for reactive power compensation type cycloconverter

Country Status (1)

Country Link
JP (1) JPS5914988B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570214A (en) * 1984-03-29 1986-02-11 Tokyo Shibaura Denki Kabushiki Kaisha Reactive power control cycloconverter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570214A (en) * 1984-03-29 1986-02-11 Tokyo Shibaura Denki Kabushiki Kaisha Reactive power control cycloconverter

Also Published As

Publication number Publication date
JPS5914988B2 (en) 1984-04-06

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