Improved Rotor-Position Estimation by Signal Injection in Brushless AC Motors, Accounting for Cross-Coupling Magnetic Saturation

被引：125

作者：

Li, Yi ^{[1
]}

Zhu, Z. Q. ^{[1
]}

Howe, David ^{[1
]}

Bingham, Chris M. ^{[1
]}

Stone, Dave A. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2009年 / 45卷 / 05期

关键词：

Brushless ac (BLAC) motor; cross-coupling effect; sensorless; signal injection; SYNCHRONOUS MACHINE; SENSORLESS CONTROL; DRIVE;

D O I：

10.1109/TIA.2009.2027518

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents an improved signal-injection-based sensorless-control method for permanent-magnet brushless ac (BLAC) motors, accounting for the influence of cross-coupling magnetic saturation between the d- and q-axes. The d- and q-axis incremental self-inductances, the incremental mutual inductance between the d-axis and q-axis, and the cross-coupling factor are determined by finite-element analysis. An experimental method is proposed for measuring the cross-coupling factor which can be used directly in the sensorless-control scheme. Both measurements and predictions show that a significant improvement in the accuracy of the rotor-position estimation can be achieved under both dynamic and steady-state operation compared with that which is obtained with the conventional signal-injection method.

引用

页码：1843 / 1850

页数：8

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