Drive control apparatus and method of alternating current motor

Electricity: motive power systems – Induction motor systems

Reexamination Certificate

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Details

C318S701000, C318S700000, C318S713000, C318S715000, C318S432000, C318S632000

Reexamination Certificate

active

11175323

ABSTRACT:
A drive control apparatus, which controls an AC motor subjected to rotational drive by applying a rectangular wave voltage thereto, comprising: an actual torque detection section for detecting an actual torque value T outputted from the AC motor; an estimated torque calculation section for calculating an estimated torque value Tm based on a motor model with the AC motor in a simulated state; and a voltage phase calculation section wherein the voltage phase calculation section calculates a first voltage phase φfb based on the actual torque value T and a command torque value T*, and a second voltage phase φff based on the estimated torque value Tm and the command torque value T* respectively, and outputs a value obtained by making the voltage phase subjected to weighting addition, as a voltage phase φv.

REFERENCES:
patent: 2002/0180402 (2002-12-01), Koide et al.
patent: 2003/0062859 (2003-04-01), Amann et al.
patent: 1 263 125 (2002-12-01), None
patent: A 10-014273 (1998-01-01), None
patent: A 2000-050689 (2000-02-01), None
patent: A 2001-028892 (2001-01-01), None

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