JPS5293912A - Operation controller of ac motors - Google Patents

Operation controller of ac motors

Info

Publication number
JPS5293912A
JPS5293912A JP935576A JP935576A JPS5293912A JP S5293912 A JPS5293912 A JP S5293912A JP 935576 A JP935576 A JP 935576A JP 935576 A JP935576 A JP 935576A JP S5293912 A JPS5293912 A JP S5293912A
Authority
JP
Japan
Prior art keywords
motors
operation controller
speed operation
frequency
controller
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
JP935576A
Other languages
Japanese (ja)
Inventor
Kunio Miyashita
Hiroshi Okuda
Takeo Maeda
Takuji Matsumura
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 JP935576A priority Critical patent/JPS5293912A/en
Publication of JPS5293912A publication Critical patent/JPS5293912A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To perform an operation efficiently by chaning over to a lower speed operation from a higher speed operation by providing a cyclo-convertor to output a frequency of 1/n of a power source frequency at a controller of a room air conditioner's compressor motor, etc.
COPYRIGHT: (C)1977,JPO&Japio
JP935576A 1976-02-02 1976-02-02 Operation controller of ac motors Pending JPS5293912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP935576A JPS5293912A (en) 1976-02-02 1976-02-02 Operation controller of ac motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP935576A JPS5293912A (en) 1976-02-02 1976-02-02 Operation controller of ac motors

Publications (1)

Publication Number Publication Date
JPS5293912A true JPS5293912A (en) 1977-08-08

Family

ID=11718144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP935576A Pending JPS5293912A (en) 1976-02-02 1976-02-02 Operation controller of ac motors

Country Status (1)

Country Link
JP (1) JPS5293912A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213779A (en) * 1984-04-09 1985-10-26 株式会社日立製作所 Refrigerator
JPS6284394U (en) * 1985-11-12 1987-05-29

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912315A (en) * 1972-05-16 1974-02-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912315A (en) * 1972-05-16 1974-02-02

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213779A (en) * 1984-04-09 1985-10-26 株式会社日立製作所 Refrigerator
JPS6284394U (en) * 1985-11-12 1987-05-29

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