JPS54108213A - Control system for ac motor - Google Patents
Control system for ac motorInfo
- Publication number
- JPS54108213A JPS54108213A JP1414678A JP1414678A JPS54108213A JP S54108213 A JPS54108213 A JP S54108213A JP 1414678 A JP1414678 A JP 1414678A JP 1414678 A JP1414678 A JP 1414678A JP S54108213 A JPS54108213 A JP S54108213A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- time
- inverter
- current
- inverter circuit
- 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
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
PURPOSE: To make the promotion of reducing the inverter capacity by limiting an output current to below the prescribed value, with an output voltage control operated by the inverter circuit when switching the power source of the AC motor to the constant voltage type inverter device.
CONSTITUTION: An AC motor 10 is operated by a commercial power source 11 until a time t1, with a contactor 13 opened at the time of t1. This causes the motor to begin attenuating its terminal voltage with the level becoming zero at a time t2. Thereafter, with a contactor 14 made closing at a time t3, a rush current intends to flow into the motor from a condenser 17, when an inverter circuit 18 controls the zero voltage period to control the rush current. Consequently, an input current to the motor is limited to the prescribed level and reduced to below the prescribed level by the time t4. After the time t4, the output voltage control of the inverter device 12 is switched from the inverter 18 to a rectifier. In this way, the suppression of output current of the constant voltage type inverter device 12 to below the prescribed value can provide a low cost device without an increase of capacity of the inverter circuit 18.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53014146A JPS5828836B2 (en) | 1978-02-13 | 1978-02-13 | AC motor control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53014146A JPS5828836B2 (en) | 1978-02-13 | 1978-02-13 | AC motor control method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54108213A true JPS54108213A (en) | 1979-08-24 |
JPS5828836B2 JPS5828836B2 (en) | 1983-06-18 |
Family
ID=11853004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53014146A Expired JPS5828836B2 (en) | 1978-02-13 | 1978-02-13 | AC motor control method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5828836B2 (en) |
-
1978
- 1978-02-13 JP JP53014146A patent/JPS5828836B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5828836B2 (en) | 1983-06-18 |
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