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Modeling of Cross-Coupling Magnetic Saturation in Signal-Injection-Based Sensorless Control of Permanent-Magnet Brushless AC Motors

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4 Author(s)
Li, Y. ; Dept. of Electron. & Electr. Eng., Univ. of Sheffield ; Zhu, Z.Q. ; Howe, D. ; Bingham, C.M.

An improved brushless AC motor model is proposed for use in signal-injection-based sensorless control schemes by accounting for cross-coupling magnetic saturation between the d- and q-axes. The incremental self- and mutual-inductance characteristics are obtained by both finite-element analysis and measurements, and have been successfully used to significantly reduce the error in the rotor position estimation of sensorless control

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Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 6 )