Title:
CONTROLLER FOR SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JPS55133694
Kind Code:
A
Abstract:
PURPOSE:To stably prevent output fall, by connecting a capacitor in parallel with the armature winding of a synchronous motor and controlling the ignition phase of a separately excited converter for driving the motor depending on the magnitude of its armature voltage. CONSTITUTION:To control the ignition of a converter 1, its ignition phase is determined depending on the deviation of a current feedback signal from a current detector 10 and a speed deviation signal from a speed deviation amplifier 9. The ignition of a separately excited converter 3 is controlled depending on a position signal from a position detector 13. a capacitor 6 is connected in parallel with the armature winding of a synchronous motor 4 to prevent its armature output from falling. The output signals of a speed detector 8 and a detector 14 are applied together to an amplifier 15. The controlled lead angle of the converter 3 is regulated by the action of a phase shifter 16 depending on the output signal of the amplifier 15.
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Inventors:
OKUYAMA TOSHIAKI
Application Number:
JP4095579A
Publication Date:
October 17, 1980
Filing Date:
April 06, 1979
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02P27/06; H02P21/22; H02P21/34; H02P23/16; H02P23/18; H02P25/02; H02P27/16; (IPC1-7): H02P5/40
Domestic Patent References:
| JPS419614Y1 | 1966-05-10 |