SURFACE-MOUNTED PERMANENT MAGNET BRUSHLESS MOTOR SENSORLESS CONTROL BASED ON EMF EXTRACTION AND EXTENDED KALMAN ESTIMATOR | ||||
| ERJ. Engineering Research Journal | ||||
| Article 4, Volume 28, Issue 2, April 2005, Page 151-158 PDF (739.3 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2005.69921 | ||||
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| Authors | ||||
| M. N. Eskander1; O.M. Araf2; O.A. Mahgoub3 | ||||
| 1electronics Research Institute, El-Tahrir street, Dokki, Cairo, Egypt | ||||
| 2Electronics Research Institute, El-Tahrir street, Dokki, Cairo, Egypt | ||||
| 3department of Electrical Power & Machines, Cairo University Giza, Egypt | ||||
| Abstract | ||||
| explained. The method doesn't include any modification to the classical construction of such motors and can be easily integrated within the drive electronics. It is applicable to both motor types, i.e. those with sinusoidal or trapezoidal back EMF. The method is independent of excitation current profile. It is also vimally independent of system parameters. The back EMF waveform is extracted on-line using simple and integration-free algebraic expression through a novel measurement setup. It is then used within the corrective phase of an extended Kalman filter (EKF) to enable accurate estimation of the rotor position and speed. The method functionality is tested by simulation for sinusoidal back EMF motor with sinusoidal and quasi-square excitation as representative cases. Simulation results show a good performance at very low speeds. | ||||
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