JPS5250519A - Frequency convertor - Google Patents

Frequency convertor

Info

Publication number
JPS5250519A
JPS5250519A JP50125873A JP12587375A JPS5250519A JP S5250519 A JPS5250519 A JP S5250519A JP 50125873 A JP50125873 A JP 50125873A JP 12587375 A JP12587375 A JP 12587375A JP S5250519 A JPS5250519 A JP S5250519A
Authority
JP
Japan
Prior art keywords
discrimination
frequency convertor
suppress
reverse
feed
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
JP50125873A
Other languages
Japanese (ja)
Other versions
JPS5625878B2 (en
Inventor
Akio Hirata
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 JP50125873A priority Critical patent/JPS5250519A/en
Publication of JPS5250519A publication Critical patent/JPS5250519A/en
Publication of JPS5625878B2 publication Critical patent/JPS5625878B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To suppress the output overcurrent, by a method that discrimination be made whether to be under speed up/down or steady running and further whether to be normal rotation or reverse one understood from the load operating condition, and on the basis of this discrimination the current detect signal is feed-back controlled.
COPYRIGHT: (C)1977,JPO&Japio
JP50125873A 1975-10-21 1975-10-21 Frequency convertor Granted JPS5250519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50125873A JPS5250519A (en) 1975-10-21 1975-10-21 Frequency convertor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50125873A JPS5250519A (en) 1975-10-21 1975-10-21 Frequency convertor

Publications (2)

Publication Number Publication Date
JPS5250519A true JPS5250519A (en) 1977-04-22
JPS5625878B2 JPS5625878B2 (en) 1981-06-15

Family

ID=14921028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50125873A Granted JPS5250519A (en) 1975-10-21 1975-10-21 Frequency convertor

Country Status (1)

Country Link
JP (1) JPS5250519A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56129595A (en) * 1980-03-14 1981-10-09 Toshiba Corp Operation controlling device for motor
JPS57135699A (en) * 1981-02-17 1982-08-21 Toshiba Corp Control device for inverter
JPS57153573A (en) * 1981-03-18 1982-09-22 Mitsubishi Electric Corp Controlling circuit for inverter
JPS58108984A (en) * 1981-12-18 1983-06-29 インステイテユト・セラミツク・エス・エイ Method and device for controlling brushless ac motor
JPS60153699U (en) * 1984-03-23 1985-10-14 株式会社明電舎 AC motor control device for material conveyance
JPS61498U (en) * 1985-05-30 1986-01-06 三菱電機株式会社 Induction motor control device
JPS6113599U (en) * 1984-06-26 1986-01-27 株式会社東芝 Air conditioner operating frequency control device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56129595A (en) * 1980-03-14 1981-10-09 Toshiba Corp Operation controlling device for motor
JPS6350960B2 (en) * 1980-03-14 1988-10-12 Tokyo Shibaura Electric Co
JPS57135699A (en) * 1981-02-17 1982-08-21 Toshiba Corp Control device for inverter
JPS57153573A (en) * 1981-03-18 1982-09-22 Mitsubishi Electric Corp Controlling circuit for inverter
JPH026314B2 (en) * 1981-03-18 1990-02-08 Mitsubishi Electric Corp
JPS58108984A (en) * 1981-12-18 1983-06-29 インステイテユト・セラミツク・エス・エイ Method and device for controlling brushless ac motor
JPS60153699U (en) * 1984-03-23 1985-10-14 株式会社明電舎 AC motor control device for material conveyance
JPS6113599U (en) * 1984-06-26 1986-01-27 株式会社東芝 Air conditioner operating frequency control device
JPS61498U (en) * 1985-05-30 1986-01-06 三菱電機株式会社 Induction motor control device

Also Published As

Publication number Publication date
JPS5625878B2 (en) 1981-06-15

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