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Sensorless full-digital PMSM drive with EKF estimation of speed and rotor position

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3 Author(s)
Bolognani, S. ; Dept. of Electr. Eng., Padova Univ., Italy ; Oboe, R. ; Zigliotto, M.

This paper concerns the realization of a sensorless permanent magnet (PM) synchronous motor drive. Position and angular speed of the rotor are obtained through an extended Kalman filter. The estimation algorithm does not require either the knowledge of the mechanical parameters or the initial rotor position, overcoming two of the main drawbacks of other estimation techniques. The drive also incorporates a digital d-q current control, which can be easily tuned with locked rotor. The experimental setup includes a PM synchronous motor, a pulsewidth modulation voltage-source inverter, and floating-point digital-signal-processor-based control system

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Industrial Electronics, IEEE Transactions on  (Volume:46 ,  Issue: 1 )