Application of Active Disturbance Rejection in a Bearingless Machine with Split-Winding

In this paper it is proposed the displacement control of a bearingless induction machine (BIM) with split winding and optimized drive structure using Active Disturbance Rejection Control (ADRC). Considering that BIM multivariable, nonlinear, time-varying system coupled variables, advanced techniques can be useful in order to make operate efficiently good dynamic performance. The ADRC considers total disturbance, composed unmodeled dynamics, nonlinearities, uncertainties, load variations, as an extended state estimates real-time through observer. This increases overall robustness disturbances different natures. application technique on radial position used work showed Linear version not able compensate for but drawback solved by use nonlinear observer structure. Besides that, both versions were stable naturally unstable machine’s rotor.