JPS54149818A - Torque controller of alternating current motor - Google Patents

Torque controller of alternating current motor

Info

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
Application number
JP5717378A
Other languages
Japanese (ja)
Inventor
Toshihiro Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP5717378A priority Critical patent/JPS54149818A/en
Publication of JPS54149818A publication Critical patent/JPS54149818A/en
Pending legal-status Critical Current

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
JP5717378A 1978-05-16 1978-05-16 Torque controller of alternating current motor Pending JPS54149818A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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