Schneider Toshiba Inverter Europe Sas

Rodolphe Sepulchre

Thomas Devos

Francois Malrait

Pierre Rouchon

Hocine Boulharts

François Malrait

Fabrice Jadot

Heu Vang

The present invention relates to a method and a system for correcting references (x), in the case of flux reduction, used in a speed variator for controlling an electric motor M having a three-phase supply, for example of the synchronous or asynchronous type. This method consists, in particular, of using a dynamic system (MM) representing a model of the motor to be controlled, provided with at least one integrator (Int) and having as input the difference between a limited value of a control voltage (u) to be applied to the motor (M) and the value of a calculated reference voltage (u).

Method and system for controlling an electric motor in the event of flux reduction

The invention concerns a method for adjusting motor parameters in a variable speed drive intended to control an electric induction motor M. The method includes a step for determining differences &#x394;Iand &#x394;Ibetween motor flux current and motor torque current references and measurements, a step for calculating a correction value &#x394;Rof the rotor resistance and a correction value &#x394;Lof the rotor inductance from the integral terms of the differences &#x394;Iand &#x394;I, a step for adjusting values of parameters of the motor model based on &#x394;Land &#x394;R, a step for generating control voltages Uand Uto be applied to the motor M using said adjusted motor parameter values.

Method for adjusting parameters of an electric motor and variable speed drive using such a method

Growing community of inventors

Neupré, Belgium

Rodolphe Sepulchre