JPS555018A - Induction motor control system - Google Patents
Induction motor control systemInfo
- Publication number
- JPS555018A JPS555018A JP7570678A JP7570678A JPS555018A JP S555018 A JPS555018 A JP S555018A JP 7570678 A JP7570678 A JP 7570678A JP 7570678 A JP7570678 A JP 7570678A JP S555018 A JPS555018 A JP S555018A
- Authority
- JP
- Japan
- Prior art keywords
- thyristors
- scr4
- scr2
- induction motor
- scr3
- 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
- Control Of Ac Motors In General (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
PURPOSE: To reduce the heat and noise of an induction motor by always energizing two serial thyristors in ON state as connected in parallel with the motor as its load to thereby provide a circulating diode therefor.
CONSTITUTION: When a contactor 13 is opened and a contactor 14 is closed at DC dynamic braking time, a phase controller 5 applies control pulse signals 5a, 5b to thyristors SCR3, SCR4, respectively. Simultaneously, an arc pulse signal generator 6 applies an arc pulse 6a to thyristors SCR1, SCR2. Accordingly, reverse voltage is applied to the thyristors SCR3, SCR4. When the thyristors SCR3, SCR4 are deenergized, the thyristors SCR1, SCR2 are conducted to cause electromagnetic energy of primary winding inductance to flow through the primary winding of an induction motor 3 through the thyristors SCR1, SCR2. Thus, the current becomes continuous waveform with less ripple rate.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7570678A JPS555018A (en) | 1978-06-22 | 1978-06-22 | Induction motor control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7570678A JPS555018A (en) | 1978-06-22 | 1978-06-22 | Induction motor control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS555018A true JPS555018A (en) | 1980-01-14 |
Family
ID=13583923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7570678A Pending JPS555018A (en) | 1978-06-22 | 1978-06-22 | Induction motor control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS555018A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170394A (en) * | 1982-03-29 | 1983-10-06 | Mitsubishi Electric Corp | Speed controller for ac elevator |
JPS6426380A (en) * | 1987-05-12 | 1989-01-27 | Kone Elevator Gmbh | Method and apparatus for controlling cage-type motor |
-
1978
- 1978-06-22 JP JP7570678A patent/JPS555018A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170394A (en) * | 1982-03-29 | 1983-10-06 | Mitsubishi Electric Corp | Speed controller for ac elevator |
JPS6426380A (en) * | 1987-05-12 | 1989-01-27 | Kone Elevator Gmbh | Method and apparatus for controlling cage-type motor |
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