JPS55109180A - Slow starter for induction motor - Google Patents
Slow starter for induction motorInfo
- Publication number
- JPS55109180A JPS55109180A JP1601179A JP1601179A JPS55109180A JP S55109180 A JPS55109180 A JP S55109180A JP 1601179 A JP1601179 A JP 1601179A JP 1601179 A JP1601179 A JP 1601179A JP S55109180 A JPS55109180 A JP S55109180A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- voltage
- current
- variable resistor
- primary 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.)
- Pending
Links
Landscapes
- Motor And Converter Starters (AREA)
Abstract
PURPOSE: To sufficiently slowly start a three-phase induction motor by further lowering the voltage to the motor when the current of the motor becomes less than set value and controlling the primary voltage in response to the primary current of the motor.
CONSTITUTION: Since the output of a current detector 26 becomes zero due to large primary current of a three-phase induction motor IM when starting the motor IM, thyristors 1∼3 are controlled by the set voltage by a variable resistor 12. As the speed of the motor is raised, the primary current of the motor reduced. When the primary current becomes less than predetermined value, the output of a current detector 26 becomes "1". Accordingly, the voltage set by the variable resistor 12 is stopped at an AND gate 30. Thus, the thyristors 1∼3 are conrolled by the voltage set by the variable resistor 29. Thus, relatively uniform accelerating torque can be provided over the entire range of the accelerating period of the motor to slowly start the motor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1601179A JPS55109180A (en) | 1979-02-16 | 1979-02-16 | Slow starter for induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1601179A JPS55109180A (en) | 1979-02-16 | 1979-02-16 | Slow starter for induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55109180A true JPS55109180A (en) | 1980-08-22 |
Family
ID=11904634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1601179A Pending JPS55109180A (en) | 1979-02-16 | 1979-02-16 | Slow starter for induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55109180A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60500989A (en) * | 1983-04-05 | 1985-06-27 | フエアフオ−ド エレクトロニクス リミテイド | Starting control method and device for polyphase induction motor |
-
1979
- 1979-02-16 JP JP1601179A patent/JPS55109180A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60500989A (en) * | 1983-04-05 | 1985-06-27 | フエアフオ−ド エレクトロニクス リミテイド | Starting control method and device for polyphase induction motor |
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