Title :
Modeling of Cross-Coupling Magnetic Saturation in Signal-Injection-Based Sensorless Control of Permanent-Magnet Brushless AC Motors
Author :
Li, Y. ; Zhu, Z.Q. ; Howe, D. ; Bingham, C.M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield
fDate :
6/1/2007 12:00:00 AM
Abstract :
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
Keywords :
AC motors; brushless machines; finite element analysis; inductance; machine control; permanent magnet motors; rotors; cross-coupling magnetic saturation; finite element analysis; permanent magnet brushless AC motor; rotor position estimation; sensorless control; signal injection; AC motors; Couplings; Error correction; Finite element methods; Magnetic analysis; Position measurement; Rotors; Saturation magnetization; Sensorless control; Voltage; Brushless AC motor; cross-coupling effect; sensorless; signal injection;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.892319
