Acquisition of position error and magnet polarity for sensorless control of PM synchronous machines

被引：189

作者：

Holtz, Joachim ^{[1
]}

机构：

[1] Univ Wuppertal, Elect Machines & Drives Lab, D-42097 Wuppertal, Germany

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2008年 / 44卷 / 04期

关键词：

initial rotor position; permanent magnet (PM); synchronous motor; sensorless control; zero-speed operation;

D O I：

10.1109/TIA.2008.921418

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Sensorless control of a permanent-magnet synchronous machine at low and zero speed is based on the injection of an oscillating high-frequency carrier signal. A particular demodulation technique serves to eliminate the estimation error introduced by pulsewidth modulation delay and the nonlinear. characteristics of the inverter. Before the drive is started, the initial rotor position and the magnet polarity are detected. The initialization is performed by injecting an ac carrier and two short current pulses in a sequence.

引用

页码：1172 / 1180

页数：9

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