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
English (en)
Japanese (ja)
Other versions
JPS5625878B2 (show.php
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/ja
Publication of JPS5250519A publication Critical patent/JPS5250519A/ja
Publication of JPS5625878B2 publication Critical patent/JPS5625878B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
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 (show.php) 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 (show.php)

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 (ja) * 1981-12-18 1983-06-29 インステイテユト・セラミツク・エス・エイ ブラシなし交流電動機の制御方法および装置
JPS60153699U (ja) * 1984-03-23 1985-10-14 株式会社明電舎 材料搬送用の交流電動機の制御装置
JPS61498U (ja) * 1985-05-30 1986-01-06 三菱電機株式会社 誘導電動機の制御装置
JPS6113599U (ja) * 1984-06-26 1986-01-27 株式会社東芝 空気調和機の運転周波数制御装置

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 (ja) * 1981-12-18 1983-06-29 インステイテユト・セラミツク・エス・エイ ブラシなし交流電動機の制御方法および装置
JPS60153699U (ja) * 1984-03-23 1985-10-14 株式会社明電舎 材料搬送用の交流電動機の制御装置
JPS6113599U (ja) * 1984-06-26 1986-01-27 株式会社東芝 空気調和機の運転周波数制御装置
JPS61498U (ja) * 1985-05-30 1986-01-06 三菱電機株式会社 誘導電動機の制御装置

Also Published As

Publication number Publication date
JPS5625878B2 (show.php) 1981-06-15

Similar Documents

Publication Publication Date Title
JPS5330718A (en) Controller for motor
JPS5250519A (en) Frequency convertor
JPS5353918A (en) Detecting method for vertical synchronizing signal and its circuit
JPS534947A (en) Controller for elevator
JPS51131021A (en) Overload prevention device
JPS53105369A (en) Detection method for impurity concentration
JPS5289702A (en) Controlling device for turbine
JPS5250520A (en) Frequency convertor
JPS52136317A (en) Operating system of induction motor
JPS5330728A (en) Speed controller for induction motor
JPS53544A (en) Control system for elevator
JPS52140182A (en) Man conveyor
JPS5384119A (en) Frequency converter
JPS5288720A (en) Frequency converting system
JPS5372120A (en) Control device of alternating current motor
JPS5347654A (en) Digital hall selector for elevator
JPS5340847A (en) Reclosing protector for converter
JPS5365923A (en) Selection for cyclo converter
JPS5292424A (en) Aft circuit
JPS5320371A (en) Speed detector
JPS52106020A (en) Turbo charger
JPS5227136A (en) Method and apparatus to maintain constant speed of generater
JPS5322247A (en) Elevator group controller
JPS52149742A (en) Ac elevator control device
JPS535745A (en) Phase abnormality protecting circui t