JPS648881A - Restarter for induction motor - Google Patents

Restarter for induction motor

Info

Publication number
JPS648881A
JPS648881A JP62162673A JP16267387A JPS648881A JP S648881 A JPS648881 A JP S648881A JP 62162673 A JP62162673 A JP 62162673A JP 16267387 A JP16267387 A JP 16267387A JP S648881 A JPS648881 A JP S648881A
Authority
JP
Japan
Prior art keywords
inverter
controller
restart
induction motor
angular 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.)
Pending
Application number
JP62162673A
Other languages
Japanese (ja)
Inventor
Masaichi Endo
Takaaki Miyabe
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 JP62162673A priority Critical patent/JPS648881A/en
Publication of JPS648881A publication Critical patent/JPS648881A/en
Pending legal-status Critical Current

Links

Landscapes

  • Motor And Converter Starters (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To suppress transient restarting current, by determining restarting frequency of an inverter from a rotary angular speed of an induction motor immediately before stoppage of the inverter, stopping time and inertia energy damping characteristic of a rotary body. CONSTITUTION:Upon interruption of an A.C. power source 1, a controller 5 stops an inverter 3 from an interruption detecting signal fed from an interruption detector 14. Upon recovery of power source, a restart command is fed from a restart command oscillator 15 to the controller 5. The controller 5 predicts restart rotary angular speed a from rotary angular speed corresponding to the inverter frequency immediately before stoppage of inverter, from stopping time and from inertia energy damping characteristic in free stop stroke of a rotary body including an induction motor, and determines restart frequency of the inverter 3.
JP62162673A 1987-06-30 1987-06-30 Restarter for induction motor Pending JPS648881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162673A JPS648881A (en) 1987-06-30 1987-06-30 Restarter for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162673A JPS648881A (en) 1987-06-30 1987-06-30 Restarter for induction motor

Publications (1)

Publication Number Publication Date
JPS648881A true JPS648881A (en) 1989-01-12

Family

ID=15759114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162673A Pending JPS648881A (en) 1987-06-30 1987-06-30 Restarter for induction motor

Country Status (1)

Country Link
JP (1) JPS648881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487190A (en) * 1990-07-26 1992-03-19 Mitsubishi Denki Shomei Kk Illumination device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487190A (en) * 1990-07-26 1992-03-19 Mitsubishi Denki Shomei Kk Illumination device

Similar Documents

Publication Publication Date Title
JPS5775732A (en) Electric discharge machining device
JPS5653588A (en) Main shaft rotation control system
JPS648890A (en) Controller for brushless motor
JPS648881A (en) Restarter for induction motor
JPS555035A (en) Brushless motor starting system
JPS5749069A (en) Method for ignition timing control
JPS57208888A (en) Speed detecting system for induction motor
JPS5686082A (en) Stopping device for motor at fixed position
JPS6481619A (en) Inverter device
JPS54105716A (en) Controller for thyristor motor
JPS5743580A (en) Control device for dc motor
JPS6416207A (en) Positioning-stop device for linear induction motor driving truck
JPS5797394A (en) Drive controlling device for synchronous motor
JPS5662085A (en) Controlling circuit for speed of motor
JPS5746697A (en) Field controller for brushless synchronous machine
JPS56115185A (en) Starting device for motor
JPS5746690A (en) Controller for ac motor
JPS5478420A (en) Controller for thyristor motor
JPS54113586A (en) Control method for running cutter
JPS5563596A (en) Revolution controlling system for ultra-low-speed synchronous motor
JPS5674090A (en) Control device for induction motor
JPS57153596A (en) Normal and reverse operating method for induction motor by voltage type inverter
JPS5615176A (en) Automatically restarting circuit of multipolar synchronous motor
JPS56153960A (en) Rotary electric machine
JPS55153280A (en) Device for controlling synchronous motor