Title:
CURRENT CONTROLLING METHOD FOR POWER CONVERTER
Document Type and Number:
Japanese Patent JPS5810212
Kind Code:
A
Abstract:
PURPOSE:To perform current control up to the range exceeding the response frequency, by correcting the phase error and current error due to delay of response of a current control system with a forecasting control in advance. CONSTITUTION:A delay phase simulation circuit 10 inputs a current phase reference signal Costheta and outputs a signal Cos(theta-phi) in which a phase delay phi of the current control system is forecast. A phase difference detection circuit 11 inputs an output signal Cos(theta-phi) of a delay phase simulation circuit 10 and the current phase reference signal Costheta and detects the phase differene phi. A phase delay correction circuit 12 inputs the output signal phi of the circuit 11 and the current phase reference signal Costheta, and outputs the signal Cos(theta+phi) forecasting and correcting the phase delay phi of the current control system. A three- phase AC motor is used and each phase current is supplied from three control circuits while keeping the phase difference of electric angle 120 degrees.
Inventors:
KUGE KATSUTAROU
KOYAMA TAKEO
KOYAMA TAKEO
Application Number:
JP10820181A
Publication Date:
January 20, 1983
Filing Date:
July 13, 1981
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G05F1/10; H02M5/27; (IPC1-7): G05F1/12
Attorney, Agent or Firm:
Noriyuki Noriyuki