JPS5446320A - Detecting method of slip or slip frequency - Google Patents

Detecting method of slip or slip frequency

Info

Publication number
JPS5446320A
JPS5446320A JP11311277A JP11311277A JPS5446320A JP S5446320 A JPS5446320 A JP S5446320A JP 11311277 A JP11311277 A JP 11311277A JP 11311277 A JP11311277 A JP 11311277A JP S5446320 A JPS5446320 A JP S5446320A
Authority
JP
Japan
Prior art keywords
slip
frequency
inverter
detected signal
current
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
JP11311277A
Other languages
Japanese (ja)
Other versions
JPS5738112B2 (en
Inventor
Takashi Toda
Masayuki Terajima
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP11311277A priority Critical patent/JPS5446320A/en
Publication of JPS5446320A publication Critical patent/JPS5446320A/en
Publication of JPS5738112B2 publication Critical patent/JPS5738112B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain highly accurate detected signal by detecting desired slip frequency or slip from three detected signals of inverter functional frequency, DC current in DC intermediate circuit and inverter AC output voltage.
CONSTITUTION: Inverter functional frequency wO, DC current Id (or AC input current Ii) in DC intermediate circuit and inverter AC output voltage Ea (or induced voltage of load motor) are taken out, and desired slip frequency or slip is detected on the basis of said signals. With such method highly accurate detected signal is obtained without depending on speed detected signal at all
COPYRIGHT: (C)1979,JPO&Japio
JP11311277A 1977-09-20 1977-09-20 Detecting method of slip or slip frequency Granted JPS5446320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11311277A JPS5446320A (en) 1977-09-20 1977-09-20 Detecting method of slip or slip frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11311277A JPS5446320A (en) 1977-09-20 1977-09-20 Detecting method of slip or slip frequency

Publications (2)

Publication Number Publication Date
JPS5446320A true JPS5446320A (en) 1979-04-12
JPS5738112B2 JPS5738112B2 (en) 1982-08-13

Family

ID=14603800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11311277A Granted JPS5446320A (en) 1977-09-20 1977-09-20 Detecting method of slip or slip frequency

Country Status (1)

Country Link
JP (1) JPS5446320A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5266918A (en) * 1975-12-01 1977-06-02 Hitachi Ltd Slip-detecter of induction motor
JPS52113113A (en) * 1976-03-11 1977-09-22 Kinsekisha Lab Ltd Transmitter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5266918A (en) * 1975-12-01 1977-06-02 Hitachi Ltd Slip-detecter of induction motor
JPS52113113A (en) * 1976-03-11 1977-09-22 Kinsekisha Lab Ltd Transmitter

Also Published As

Publication number Publication date
JPS5738112B2 (en) 1982-08-13

Similar Documents

Publication Publication Date Title
JPS5446320A (en) Detecting method of slip or slip frequency
JPS5439843A (en) Ac power source
JPS5599683A (en) Coordinates reader
JPS55100075A (en) Sine wave inverter
JPS5612568A (en) Body detecting device
JPS5520529A (en) Speed control unit
JPS6450793A (en) Inverter
JPS5344098A (en) Detecting apparatus of upper and lower limit
JPS5318942A (en) Frequency multiplication circuit
JPS528869A (en) Amplitude differential detectio circuit
JPS53127257A (en) Frequency-voltage convertor
JPS5552634A (en) Signal discrimination circuit
JPS5421506A (en) Rotation/frequency converter for motor
JPS5365923A (en) Selection for cyclo converter
JPS54113842A (en) Anti-time eddy current relay
JPS5467473A (en) Surface potentiometer
JPS5388914A (en) Induction motor controller by current type inverters
JPS54110421A (en) Chopper controller
JPS5240172A (en) Mean value detection circuit
JPS522475A (en) Speed detection circuit
JPS5534375A (en) Voltage detection circuit
JPS53104283A (en) Input level detection circuit
JPS5248426A (en) Noise detection unit
JPS5375751A (en) Speed detector
JPS5458845A (en) Step-out relay