Vector control method of induction motor

Details Vector control method of induction motor Vector control method of induction motor

1991-08-12

1994-09-13

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Secondary circuit control

318798, H02P 126

Patent

active

053472063

ABSTRACT:
This invention provides a vector control method for controlling an induction motor that is used to drive an elevator based on secondary time constants, wherein the secondary time constants, which have been corrected for temperature, are determined in a short amount of time and the precision of the determination is improved, by passing a constant current of the same phase as during a similar operation to the excitation side of the induction motor while the elevator is mechanically stopped and then determining the secondary time constants.

REFERENCES:
patent: 4967135 (1990-10-01), Ashikaga et al.

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