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JPS57196869A - Frequency converter - Google Patents

Frequency converter

Info

Publication number
JPS57196869A
JPS57196869A JP7930981A JP7930981A JPS57196869A JP S57196869 A JPS57196869 A JP S57196869A JP 7930981 A JP7930981 A JP 7930981A JP 7930981 A JP7930981 A JP 7930981A JP S57196869 A JPS57196869 A JP S57196869A
Authority
JP
Japan
Prior art keywords
voltage
frequency
rectifier
output voltage
relative
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
JP7930981A
Other languages
Japanese (ja)
Inventor
Yasuaki Miyoda
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 JP7930981A priority Critical patent/JPS57196869A/en
Publication of JPS57196869A publication Critical patent/JPS57196869A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

PURPOSE:To vary the frequency of an AC voltage relative to the voltage by altering the frequency of the AC output voltage of an AC voltage generator relative to the magnitude of the rectified output voltage of a rectifier. CONSTITUTION:An AC voltage 1 is applied to a rectifier 4 by closing a power source switch 2, and a DC voltage is obtained from DC terminals 43, 44. DC voltages of Ea/2, 2Ea, 3Ea are produced by switching the movable contacts 45A-48A of changeover switches 45-48 to stationary contacts 45L-48L, 45M- 48M and 45H-48H, where the AC input voltage is represented by Ea. The frequency of the AC voltage is controlled between f and 6f in response to the DC output voltage Ea/2-3Ea by varying the switching period of a gate control circuit 57 of an AC voltage generator 5, and a current flowing through a load 6 is maintained constantly.
JP7930981A 1981-05-27 1981-05-27 Frequency converter Pending JPS57196869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7930981A JPS57196869A (en) 1981-05-27 1981-05-27 Frequency converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7930981A JPS57196869A (en) 1981-05-27 1981-05-27 Frequency converter

Publications (1)

Publication Number Publication Date
JPS57196869A true JPS57196869A (en) 1982-12-02

Family

ID=13686247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7930981A Pending JPS57196869A (en) 1981-05-27 1981-05-27 Frequency converter

Country Status (1)

Country Link
JP (1) JPS57196869A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336189U (en) * 1986-08-21 1988-03-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6336189U (en) * 1986-08-21 1988-03-08

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