JPS55111691A - Device for controlling operation of ac motor - Google Patents
Device for controlling operation of ac motorInfo
- Publication number
- JPS55111691A JPS55111691A JP1732479A JP1732479A JPS55111691A JP S55111691 A JPS55111691 A JP S55111691A JP 1732479 A JP1732479 A JP 1732479A JP 1732479 A JP1732479 A JP 1732479A JP S55111691 A JPS55111691 A JP S55111691A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- current
- converter
- output
- signal
- 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
Abstract
PURPOSE: To enable continuation of operation of an AC motor by providing a control circuit for controlling the output current of alive converter to generate a current at normal time when one of the converters provided at respective phases of the motor malfunctions.
CONSTITUTION: A cyclo converter 1 for driving a synchronous motor 2 compares the signal from a speed detector 4 with the output from a speed instructing circuit 5, and the output from a position detector 7 is applied to multipliers 8∼10 for control. There is provided a control circuit 11 having switches 21∼26 and adders 27∼29 between the multipliers 8∼10 and current deviation amplifiers 15∼17. When one of the respective phased of the converter 1 malfunctions, the defective phase is separated, and a current instruction signal of the defective phase is applied thereto together with the original current instructing signal. Accordingly, the armature winding of the defective phase generates the electromotive force equal to the electromotive force induced at normal time in the alive phases to thus continue the operation of the motor with safety.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1732479A JPS55111691A (en) | 1979-02-19 | 1979-02-19 | Device for controlling operation of ac motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1732479A JPS55111691A (en) | 1979-02-19 | 1979-02-19 | Device for controlling operation of ac motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55111691A true JPS55111691A (en) | 1980-08-28 |
JPS6310679B2 JPS6310679B2 (en) | 1988-03-08 |
Family
ID=11940851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1732479A Granted JPS55111691A (en) | 1979-02-19 | 1979-02-19 | Device for controlling operation of ac motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55111691A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150698A (en) * | 1984-12-24 | 1986-07-09 | Toshiba Corp | Method of controlling ac motor |
JP2007507998A (en) * | 2003-10-06 | 2007-03-29 | ウェイブクレスト ラボラトリーズ リミテッド ライアビリティ カンパニー | Fault-tolerant electric motor control system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5226110U (en) * | 1975-08-14 | 1977-02-23 |
-
1979
- 1979-02-19 JP JP1732479A patent/JPS55111691A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5226110U (en) * | 1975-08-14 | 1977-02-23 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150698A (en) * | 1984-12-24 | 1986-07-09 | Toshiba Corp | Method of controlling ac motor |
JP2007507998A (en) * | 2003-10-06 | 2007-03-29 | ウェイブクレスト ラボラトリーズ リミテッド ライアビリティ カンパニー | Fault-tolerant electric motor control system |
Also Published As
Publication number | Publication date |
---|---|
JPS6310679B2 (en) | 1988-03-08 |
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