JPS5454225A - Method of variable speed control of ac motor with cyclo-converter - Google Patents

Method of variable speed control of ac motor with cyclo-converter

Info

Publication number
JPS5454225A
JPS5454225A JP12004777A JP12004777A JPS5454225A JP S5454225 A JPS5454225 A JP S5454225A JP 12004777 A JP12004777 A JP 12004777A JP 12004777 A JP12004777 A JP 12004777A JP S5454225 A JPS5454225 A JP S5454225A
Authority
JP
Japan
Prior art keywords
switching
time
cyclo
converter
variable speed
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
JP12004777A
Other languages
Japanese (ja)
Other versions
JPS5943920B2 (en
Inventor
Teruo Nakano
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 JP52120047A priority Critical patent/JPS5943920B2/en
Publication of JPS5454225A publication Critical patent/JPS5454225A/en
Publication of JPS5943920B2 publication Critical patent/JPS5943920B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To permit prompt regeneration of motor or reactor energy on the power source side by causing a cyclo-converter element to be fired for a short period of time only for a short period of time at the time of the switching from direct input drice to cyclo-converter variable speed drive.
CONSTITUTION: A power source side commutation command isgnal generating circuit 21 and a load side commutation command signal generating circuit 22 and a switching signal generator 23 for effecting switching between derect input drive and cyclo-converter variable speed drice are connected to NAND circuits 24 to 29, through which a signal "0" is provided to a thyristor gate pulse amplifier 30 when the output of the circuit 22 and 23 are "1". Thus, when the output of the switching singla generator 23 is changed from "0" to "1", a signal "1" is produced for a constant period of time to forcibly lock the circuit 22 to xx "1" while causing a phase controller 32 to reduce the firing phase angle to the ϒ side. In this way, switching can be effected safely and in a short period of time
COPYRIGHT: (C)1979,JPO&Japio
JP52120047A 1977-10-07 1977-10-07 Variable speed control method for AC motor using cycloconverter Expired JPS5943920B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52120047A JPS5943920B2 (en) 1977-10-07 1977-10-07 Variable speed control method for AC motor using cycloconverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52120047A JPS5943920B2 (en) 1977-10-07 1977-10-07 Variable speed control method for AC motor using cycloconverter

Publications (2)

Publication Number Publication Date
JPS5454225A true JPS5454225A (en) 1979-04-28
JPS5943920B2 JPS5943920B2 (en) 1984-10-25

Family

ID=14776570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52120047A Expired JPS5943920B2 (en) 1977-10-07 1977-10-07 Variable speed control method for AC motor using cycloconverter

Country Status (1)

Country Link
JP (1) JPS5943920B2 (en)

Also Published As

Publication number Publication date
JPS5943920B2 (en) 1984-10-25

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