Control of permanent magnet motor drives using a new position estimation technique
Control of permanent magnet motor drives using a new position estimation technique
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DOI：
10.1109/28.536870
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发表时间：
1996-09
影响因子：
4.4
通讯作者：
C. French;P. Acarnley
中科院分区：
文献类型：
--
作者：
C. French;P. Acarnley
永磁电机驱动器需要绝对位置信息，以便可以与转子同步调制绕组电流。消除此类传感器已成为许多出版物的主题。本文描述了永磁电机磁链和位置估计相结合的新算法的原理和实现。该算法使用机器的磁链与电流与位置的关系特性，因此能够考虑机器的非线性。位置估计器利用了广义非侵入式估计方案中的特性，该方案在整个操作条件范围内都有效。本文展示了估计器作为基于数字信号处理器的驱动系统中的嵌入代码的实现。实验结果证明了当驱动器在无传感器闭环运行时（即由位置估计器提供转子位置）在稳态和瞬态条件下该算法的性能。
Permanent magnet motor drives require absolute position information so that winding currents can be modulated in synchronism with the rotor. The eradication of such sensors has been the subject of many publications. This paper describes the principles and implementation of a new algorithm for combined flux-linkage and position estimation in permanent magnet motors. The algorithm uses the machine's flux-linkage versus current versus position characteristic and is thus able to take account of machine nonlinearities. The position estimator utilizes the characteristic in a generalized nonintrusive estimation scheme, which is effective over the whole range of operating conditions. The paper shows implementation of the estimator as embedded code in a digital signal processor-based drive system. Experimental results demonstrate the performance of the algorithm under steady-state and transient conditions, when the drive is operating closed loop sensorless, i.e., with the rotor position being provided by the position estimator.