JPS5537837A - Terminal voltage controller for self-excited induction motor - Google Patents
Terminal voltage controller for self-excited induction motorInfo
- Publication number
- JPS5537837A JPS5537837A JP10932278A JP10932278A JPS5537837A JP S5537837 A JPS5537837 A JP S5537837A JP 10932278 A JP10932278 A JP 10932278A JP 10932278 A JP10932278 A JP 10932278A JP S5537837 A JPS5537837 A JP S5537837A
- Authority
- JP
- Japan
- Prior art keywords
- induction motor
- terminal voltage
- reactive power
- firing
- magnitude
- 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
Abstract
PURPOSE: To always retain the terminal voltage of a self-excited induction motor constant by controlling the firing phase angle of a thyristor in a power converter in response to the magnitude of an error signal of the terminal voltage and a set voltage value.
CONSTITUTION: A comparator amplifier 11 compares the terminal voltage of an induction motor 6 detected by a transformer 7 with the set voltage value of a voltage setting potentiometer 12 to detect and amplify the difference therebetween to produce an error signal to a phase controller 8. The controller 8 and a logic arithmetic firing circuit 9 control the thyristor firing phase angle of a power converter 4 in response to the magnitude of the error signal to alter the magnitude of reactive power. That is, when the load of the induction motor 6 is reduced to reduce the delayed reactive power, a capacitor 5 generates excessive lead reactive power to increase the exciting current to thereby increase the terminal voltage of the induction motor 6. Accordingly, the phase of the firing signal is controlled to flow large current at the reactor 3 to thereby reduce the lead reactive power by the capacitor. Thus, the terminal voltage of the induction motor can be always retained constant.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10932278A JPS5537837A (en) | 1978-09-05 | 1978-09-05 | Terminal voltage controller for self-excited induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10932278A JPS5537837A (en) | 1978-09-05 | 1978-09-05 | Terminal voltage controller for self-excited induction motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5537837A true JPS5537837A (en) | 1980-03-17 |
Family
ID=14507280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10932278A Pending JPS5537837A (en) | 1978-09-05 | 1978-09-05 | Terminal voltage controller for self-excited induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5537837A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58188989U (en) * | 1982-06-11 | 1983-12-15 | 沖電線株式会社 | Plug structure |
-
1978
- 1978-09-05 JP JP10932278A patent/JPS5537837A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58188989U (en) * | 1982-06-11 | 1983-12-15 | 沖電線株式会社 | Plug structure |
JPS6333506Y2 (en) * | 1982-06-11 | 1988-09-06 |
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