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

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2552

Lastpage

2554

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892319

Filename

4202998