JPS5619380A - Voltage control of three-phase power supply - Google Patents

Voltage control of three-phase power supply

Info

Publication number
JPS5619380A
JPS5619380A JP9531279A JP9531279A JPS5619380A JP S5619380 A JPS5619380 A JP S5619380A JP 9531279 A JP9531279 A JP 9531279A JP 9531279 A JP9531279 A JP 9531279A JP S5619380 A JPS5619380 A JP S5619380A
Authority
JP
Japan
Prior art keywords
phase angle
power supply
firing
phase
angle theta
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
JP9531279A
Other languages
Japanese (ja)
Other versions
JPS6151509B2 (en
Inventor
Yoshitomo Takizawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9531279A priority Critical patent/JPS5619380A/en
Publication of JPS5619380A publication Critical patent/JPS5619380A/en
Publication of JPS6151509B2 publication Critical patent/JPS6151509B2/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/084—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters using a control circuit common to several phases of a multi-phase system

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Control Of Ac Motors In General (AREA)
  • Power Conversion In General (AREA)

Abstract

PURPOSE:To preferably control a three-phase power supply even for a load having delay power factor by controlling the pulse width of a firing signal for a TRIAC in response to the case that the firing phase angle is less than a predetermined level and the case that the firing phase angle is higher than the level. CONSTITUTION:TRIAC22, 24 are inserted to two phases of three-phase power supply to control the voltage applied to the load. If the firing phase angle theta is less than 60 deg. in this case, the pulse width of the firing signal 124 applied to the T-phase TRIAC24 is set low to remove the step-up phenomenon of the power supply voltage generated in the range of 60 deg. to 90 deg. of the phase angle theta. On the other hand, if the phase angle theta is higher than 60 deg., as the phase angle theta increases, the pulse width of the firing signal 124 is increased to control preferably the delayed power factor.
JP9531279A 1979-07-26 1979-07-26 Voltage control of three-phase power supply Granted JPS5619380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9531279A JPS5619380A (en) 1979-07-26 1979-07-26 Voltage control of three-phase power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9531279A JPS5619380A (en) 1979-07-26 1979-07-26 Voltage control of three-phase power supply

Publications (2)

Publication Number Publication Date
JPS5619380A true JPS5619380A (en) 1981-02-24
JPS6151509B2 JPS6151509B2 (en) 1986-11-08

Family

ID=14134231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9531279A Granted JPS5619380A (en) 1979-07-26 1979-07-26 Voltage control of three-phase power supply

Country Status (1)

Country Link
JP (1) JPS5619380A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63220796A (en) * 1987-03-06 1988-09-14 Daikin Ind Ltd Rotating speed controller for ac motor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6348206U (en) * 1986-09-16 1988-04-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63220796A (en) * 1987-03-06 1988-09-14 Daikin Ind Ltd Rotating speed controller for ac motor

Also Published As

Publication number Publication date
JPS6151509B2 (en) 1986-11-08

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