Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

Figure 17

Simulation waveform of speed sensorless for vector control system of EESM. (a) Comparison between actual speed and estimated speed of motor, (b) comparison between actual angle and estimated angle of the rotor, and (c) enlarged view of comparison between actual angle and estimated angle of the rotor.

(a)

(b)

(c)