| 摘要 |
PCT No. PCT/JP82/00086 Sec. 371 Date Nov. 26, 1982 Sec. 102(e) Date Nov. 26, 1982 PCT Filed Mar. 30, 1982 PCT Pub. No. WO82/03508 PCT Pub. Date Oct. 14, 1982.An AC motor control method and apparatus therefor, for controlling an AC motor 11 by holding the excitation current I0 of the AC motor 11 constant and varying primary current I1 in accordance with a speed deviation DELTA n. Stored previously in a memory device 18 are a torque T-slip frequency omega s characteristic, a slip frequency omega s-primary current vector I1 characteristic, and a slip frequency omega s and phase phi 1 characteristic which take secondary leakage reactance into account. Slip frequency omega s, primary current vector I1 and phase phi 1 are read out of the memory device in accordance with the torque command T obtained from the speed deviation DELTA n, whereby three-phase current commands iu, iv, iw are produced. Accordingly, torque irregularity is suppressed and an excellent response obtained.
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