Motor controller

Details Motor controller Motor controller

1998-03-24

1999-08-10

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318254, 318716, 318802, 318809, H02P 528

Patent

active

059363789

ABSTRACT:
A motor controller comprising drive unit for supplying power to the stator windings of a motor based on a current command, a stator current detection unit for detecting the stator current flowing in the stator windings, a saturation degree production unit for producing the saturation degree data indicating the extent to which the stator current deviates from the current command based on the current command and the stator current, a reference value production unit for producing a reference value of the saturation degree, a gain production unit for producing a gain indicating the rate at which the current command is changed, and a current command production unit for producing the current command data based on the saturation degree, the reference value and the gain, wherein the gain production unit produces the gain data based on at least one of the rotational speed of the motor and the current command.

REFERENCES:
patent: 4649331 (1987-03-01), Jahns
patent: 5652495 (1997-07-01), Narazaki et al.

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