Induction motor control method

Details Induction motor control method Induction motor control method

1997-04-04

1998-05-19

Sircus, Brian

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, 318713, H02B 534

Patent

active

057540268

ABSTRACT:
The present invention provides a method for controlling an induction motor. The method comprises determining an input impedance of the motor at an operating point; determining an input electrical power to the motor at the operating point; and estimating a slip or shaft speed of the motor at the operating point from the input impedance and input electrical power.

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