Dynamic operation of carrier-signal-injection-based sensorless direct field-oriented AC drives

被引:66
作者
Briz, F [1 ]
Diez, A
Degner, MW
机构
[1] Univ Oviedo, Dept Elect Comp & Syst Engn, E-33204 Gijon, Spain
[2] Ford Motor Co, Sci Res Lab, Dearborn, MI 48121 USA
关键词
position estimation; self-sensing; sensorless control;
D O I
10.1109/28.871285
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper analyzes the dynamic operation of carrier-signal-based sensorless field-oriented ac drives. The effects of the harmonics introduced by the fundamental current transients at frequencies near the carrier-signal frequency are first analyzed, then compensation based on a fundamental current observer is proposed, The utilization of such a fundamental current observer provides the possibility of modifying the analog-to-digital conversion process to increase the number of bits effectively containing spatial information and thereby substantially increasing the accuracy of the estimated rotor position or flux angle.
引用
收藏
页码:1360 / 1368
页数:9
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