JPS57196874A - Variable frequency power source - Google Patents

Variable frequency power source

Info

Publication number
JPS57196874A
JPS57196874A JP56081943A JP8194381A JPS57196874A JP S57196874 A JPS57196874 A JP S57196874A JP 56081943 A JP56081943 A JP 56081943A JP 8194381 A JP8194381 A JP 8194381A JP S57196874 A JPS57196874 A JP S57196874A
Authority
JP
Japan
Prior art keywords
pulse train
width
output
circuits
power source
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
JP56081943A
Other languages
Japanese (ja)
Inventor
Katsutaro Kuge
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 JP56081943A priority Critical patent/JPS57196874A/en
Publication of JPS57196874A publication Critical patent/JPS57196874A/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To improve the output characteristics of a variable frequency power source by forming a PW-modulated output via the logically operated output of a reference pulse train and a comparison pulse train and contolling the output frequency of an inverter, thereby smoothly varying the PW-modulated output. CONSTITUTION:Reference pulse train circuits 81-87 which form a pulse train having a pulse at every 360 deg. with 60 deg. of elecric angle in width and a pulse train having six sets of the prescribed frequencies in which the phase is respectively displaced by 60 deg. with 60 deg. of width, and comparison pulse train circuits 11-71 which form a pulse train having a pulse at every 360 deg. with 60 deg. of electric angle in width and a pulse train having six sets of variable frequencies in which the phase is respectively displaced by 60 deg. with 60 deg. of width, are provided. PW- modulated output is formed by logical operation circuit 91 of the reference pulse train and comparison pulse train from both the circuits, thereby controlling the fires of respective thyristors of an inverter 3.
JP56081943A 1981-05-29 1981-05-29 Variable frequency power source Pending JPS57196874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081943A JPS57196874A (en) 1981-05-29 1981-05-29 Variable frequency power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081943A JPS57196874A (en) 1981-05-29 1981-05-29 Variable frequency power source

Publications (1)

Publication Number Publication Date
JPS57196874A true JPS57196874A (en) 1982-12-02

Family

ID=13760575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081943A Pending JPS57196874A (en) 1981-05-29 1981-05-29 Variable frequency power source

Country Status (1)

Country Link
JP (1) JPS57196874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4926964B2 (en) * 2005-08-03 2012-05-09 イーグル工業株式会社 Piping joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4926964B2 (en) * 2005-08-03 2012-05-09 イーグル工業株式会社 Piping joint

Similar Documents

Publication Publication Date Title
JPS5421152A (en) Comparison circuit
JPS544560A (en) Semiconductor inverter circuit
JPS57196874A (en) Variable frequency power source
JPS56150977A (en) Voltage type inverter
JPS57166881A (en) Control circuit for inverter device
JPS6469266A (en) Three-phase pwm signal generation circuit for inverter device
JPS5563575A (en) Control for self-excited inverter device
JPS55153275A (en) Power converter
JPS53114028A (en) Inverter controlling lead angle control circuit
JPS53113739A (en) Power source apparatus of single phase direct current arc welding
JPS5342347A (en) Constant voltage power source
JPS52140830A (en) Method of controlling inverter
JPS5395221A (en) Control circuit induction motor
JPS5615187A (en) Forward/backward rotation controller for single-phase induction motor
JPS5318928A (en) Scanning pulse generator circuit
JPS6419987A (en) Load communication type inverter device
JPS5210510A (en) Controlling device of induction motor
JPS531821A (en) Dc-ac converter
JPS5410923A (en) Inverter controller
JPS52125743A (en) Stabilizing electric source circuit
JPS6419996A (en) Motor control circuit
JPS52151820A (en) Semi conductor switch control device of inverter
JPS5674086A (en) Inverter
JPS5375540A (en) Inverter for induction heating
JPS57129174A (en) Inverter circuit