Method and device for estimating the magnetic reduction flux of an asynchronous motor, especially with a view of the motor control by flux regulation

摘要

This method comprises the following operations: … …  - measuring this motor's voltage and current, …  - calculating a flux, termed the measured flux, in accordance with the operating equations for the motor, and on the basis of the said measurements and of predetermined values of parameters characteristic of the motor, one at least of which, fixed arbitrarily, may differ substantially from its true value, …  - calculating, from this measured flux, a flux, termed the estimated flux, which can be identified with the true flux, in accordance with an expression deduced from the operating equations for the motor and dependent on the measured flux, on parameters characteristic of the motor, other than the said parameter having a value which may differ substantially from its true value, and possibly on the said voltage or current measurements. … …IMAGE…