Checking method of initial position for surface-mounted permanent magnet linear synchronous motor

被引：0

作者：

Lu, Hua-Cai ^{[1
]}

Xu, Yue-Tong ^{[1
]}

Yang, Wei-Min ^{[1
]}

Chen, Zi-Chen ^{[1
]}

机构：

[1] Institute of Manufacturing Engineering, Zhejiang University

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2008年 / 42卷 / 05期

关键词：

Initial position; Saturation effect; Surface-mounted permanent magnet linear synchronous motor;

D O I：

10.3785/j.issn.1008-973X.2008.05.022

中图分类号：

学科分类号：

摘要：

The detection of initial position for a sensorless surface-mounted permanent magnet linear synchronous motor (SPMLSM) is difficult because it has no salience. Based on the saturation effect of winding inductance, an estimation method of initial position for SPMLSM without a position sensor was presented. The winding inductance changes with the mover position due to the saturation effect, which causes the variation of current response when the position is varying. The initial mover position can be identified through observing the maximum d-axis current when a series of voltages which have the same amplitude and different phases are applied to the motor. The method can be performed without motor parameters and additional hardware. Experimental results show that the initial mover position can be estimated at standstill through injecting the controllable voltage based on saturation effect, and that the estimation precision can fulfill the requirement of SPMLSM starting smoothly.

引用

页码：835 / 838

页数：3

共 9 条

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