Title:
MAGNETICCFLUX OPERATOR FOR SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JPS55136889
Kind Code:
A
Abstract:
PURPOSE:To enable the operation possible even under the stationary conditions of a motor by operating the magnetic flux by a current model, and correcting the result by the result of the operation by a voltage model having a small operation error. CONSTITUTION:The terminal voltages of individual phases of an armature are converted into the components of coordinates with alpha and beta axes by a corrdinate converter 525, input into induced-voltage detectors 526 and 527, and the induced voltages ealpha' and ebeta' are output. While, the outputs from a coordinate converter 523 of a magnetic-flux operator in a current model are differentiated by differentiators 530 and 531, and added to the outputs from the coordinate converter 523, with the control action being performed by adjusters 528 and 529 so that the difference between the differentiated outputs and the induced voltages ealpha' and ebeta' becomes zero. Therefore, the result of the magnetic-flux operation by the current model is corrected by the voltage model, the operation under the stationary state of the motor can be performed, and the accuracy of the operation under the rotating condition can be enhanced.
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Inventors:
MOTOYOSHI OSAMU
ENDOU KAZUYA
ENDOU KAZUYA
Application Number:
JP4246879A
Publication Date:
October 25, 1980
Filing Date:
April 10, 1979
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
H02P27/06; H02P21/00; H02P21/06; H02P21/13; H02P21/14; H02P21/22; H02P23/16; H02P23/18; H02P27/16; (IPC1-7): H02P5/40