Sensorless Direct Torque Control of the Six-Phase Induction Motor by Fast Reduced Order Extended Kalman Filter

Figure 4

Experimental results of EKF modeling of the six-phase induction motor in (a) load torque, (b) estimated load torque, (c) estimated motor speed, (d) estimated stator resistance, (e) zoomed shape of stator flux, and (f) zoomed shape of stator current.

(a)

(b)

(c)

(d)

(e)

(f)