Title:
CONTROLLER OF INDUCTION MOTOR
Document Type and Number:
Japanese Patent JPS61180592
Kind Code:
A
Abstract:
PURPOSE:To always correct accurately in all operating ranges including stopping state by providing a power presuming circuit, correcting the constants of an induction motor. CONSTITUTION:A power calculator 21 calculates power energy F0 relative to reactive power generated in an induction motor. A power presuming circuit 22 calculates power energy F0' affecting an influence to the value of the secondary winding resistance R2 when the value varies to temperature change. The energies F0, F0' are input to a correcting circuit 14, which produces an output to obtain a constant T*2 having the value coincident to the constant of the actual induction motor. The value of the constant T*2 of the motor in the circuit 22 and the value of the constant T*2 in a current vector calculator 17 are corrected.
Inventors:
KOYAMA MASATO
Application Number:
JP2042185A
Publication Date:
August 13, 1986
Filing Date:
February 05, 1985
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02P21/00; H02P21/08; H02P27/04; H02P21/14; H02P21/16; H02P21/18; H02P21/22; H02P21/24; H02P21/28; H02P21/34; H02P21/36; H02P23/07; H02P23/08; H02P23/14; H02P23/16; H02P23/18; H02P23/26; H02P27/16; (IPC1-7): H02P5/40E
Attorney, Agent or Firm:
Hiroaki Tazawa