JPS6434187A - Operating device for 3-phase induction motor - Google Patents
Operating device for 3-phase induction motorInfo
- Publication number
- JPS6434187A JPS6434187A JP18843987A JP18843987A JPS6434187A JP S6434187 A JPS6434187 A JP S6434187A JP 18843987 A JP18843987 A JP 18843987A JP 18843987 A JP18843987 A JP 18843987A JP S6434187 A JPS6434187 A JP S6434187A
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- output
- phase
- frequency
- induction motor
- 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 restrain the fluctuations of a torque and a current upon starting, by a method wherein an output voltage and an output frequency are kept in predetermined values until the phase of the output voltage of an inverter circuit is changed by 60 deg. in electric angle. CONSTITUTION:Upon starting, the output frequency of an inverter circuit 2 is set at F0 (2-4 times of the stationary slip frequency of an induction motor 1) while the output voltage of the same circuit 2 is set at V0 (a value corresponding to the output frequency F0 with a predetermined V/F ratio). When the phase of the voltage, outputted from the inverter circuit 2, has become 60 deg., the phase of the output voltage is advanced by 60 deg. in electric angle while the output voltage is set at V0/2 and the output frequency is set at F0/2. Thereafter, the output voltage and the output frequency are risen up gradually while keeping a given relation between them. According to this method, the fluctuations or the like of the torque and current upon starting may be restrained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18843987A JPS6434187A (en) | 1987-07-28 | 1987-07-28 | Operating device for 3-phase induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18843987A JPS6434187A (en) | 1987-07-28 | 1987-07-28 | Operating device for 3-phase induction motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6434187A true JPS6434187A (en) | 1989-02-03 |
Family
ID=16223699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18843987A Pending JPS6434187A (en) | 1987-07-28 | 1987-07-28 | Operating device for 3-phase induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6434187A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0537512A2 (en) * | 1991-10-16 | 1993-04-21 | Indel B S.R.L. | Circuit device for controlling a three-phase asynchronous motor powered with direct current |
-
1987
- 1987-07-28 JP JP18843987A patent/JPS6434187A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0537512A2 (en) * | 1991-10-16 | 1993-04-21 | Indel B S.R.L. | Circuit device for controlling a three-phase asynchronous motor powered with direct current |
EP0537512A3 (en) * | 1991-10-16 | 1994-02-02 | Indel B Srl |
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