Title:
CONTROLLER FOR MOTOR
Document Type and Number:
Japanese Patent JPS5986494
Kind Code:
A
Abstract:
PURPOSE:To control the high performance of a motor by presuming the DC side current of a PWM inverter, thereby abruptly accelerating or decelerating the load of the motor. CONSTITUTION:A torque component current command value It0 is inputted to a calculator 30, and calculated by a multiplier 31 and a divider 32 so as to presume the DC side current IL of a PWM inverter 7. The presumed value of the IL is added as the command value Id0 of the Id through an adder 13 to a subtracter 14, and controlled so that the DC currents Id of power reactor and inverter 3, 4 become equal to the Id0. In this manner, since the current of a capacitor 6 preferably follows up accurately the IL by the Id even if the load abruptly varies, it becomes small value, and the variation in the terminal voltage Ed of the capacitor 6 proportional to the time integration of the current Ic can be accordingly maintained at small value.
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Inventors:
YOSHIOKA TAKAYUKI
TOBIYO MASAHIRO
TOBIYO MASAHIRO
Application Number:
JP19451782A
Publication Date:
May 18, 1984
Filing Date:
November 08, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02P27/08; H02M7/48; H02P23/06; (IPC1-7): H02M7/48; H02P5/34
Attorney, Agent or Firm:
Masami Akimoto
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