JPS648881A - Restarter for induction motor - Google Patents
Restarter for induction motorInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0487190A (en) * | 1990-07-26 | 1992-03-19 | Mitsubishi Denki Shomei Kk | Illumination device |
-
1987
- 1987-06-30 JP JP62162673A patent/JPS648881A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0487190A (en) * | 1990-07-26 | 1992-03-19 | Mitsubishi Denki Shomei Kk | Illumination device |
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