JPS54149818A - Torque controller of alternating current motor - Google Patents
Torque controller of alternating current motorInfo
- Publication number
- JPS54149818A JPS54149818A JP5717378A JP5717378A JPS54149818A JP S54149818 A JPS54149818 A JP S54149818A JP 5717378 A JP5717378 A JP 5717378A JP 5717378 A JP5717378 A JP 5717378A JP S54149818 A JPS54149818 A JP S54149818A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic flux
- torque generated
- alternating current
- armature currents
- torque
- 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 control torque generated at high accuracy while reducing the components of the pulsation of torque, by mounting an electromotive force computing element and a magnetic flux computing element to a control circuit of an alternating current motor, to which armature currents are fed through a rectifying valve.
CONSTITUTION: The terminal voltage of the motor of an alternating current motors 20, to which armature currents are supplied through a rectifying valve 16, and armature currents are sent to an electromotive force computing circuit 40, magnetic flux is calculated by means of a magnetic flux computing element 42 from the electromotive force and magnetic flux is phase shited at angle of 90° by means of a vector rotary instrument 44. The magnetic flux is rectified synchronizing with the control signals of the rectifying valve 16, effective magnetic flux is detected, current command value is computed from the effective magnetic flux and torque command value 34 and armature currents are controlled in accordance with the value. Thus, torque generated can be controlled at high accuracy while a pulsation portion contained in the torque generated can be reduced not more than tolerance limits, and the torque generated can be changed into smooth drive characteristic.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5717378A JPS54149818A (en) | 1978-05-16 | 1978-05-16 | Torque controller of alternating current motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5717378A JPS54149818A (en) | 1978-05-16 | 1978-05-16 | Torque controller of alternating current motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54149818A true JPS54149818A (en) | 1979-11-24 |
Family
ID=13048144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5717378A Pending JPS54149818A (en) | 1978-05-16 | 1978-05-16 | Torque controller of alternating current motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54149818A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6738718B2 (en) * | 2002-03-27 | 2004-05-18 | Motorola, Inc. | Method and apparatus for measuring torque and flux current in a synchronous motor |
-
1978
- 1978-05-16 JP JP5717378A patent/JPS54149818A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6738718B2 (en) * | 2002-03-27 | 2004-05-18 | Motorola, Inc. | Method and apparatus for measuring torque and flux current in a synchronous motor |
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