A new sensorless control strategy by high-frequency pulsating signal injection into stationary reference frame

J. Liu, Z. Zhu
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引用次数: 13

Abstract

In this paper, a new sensorless control strategy by injecting a high frequency pulsating signal into the stationary reference frame is proposed. Differing from the two most popular conventional high frequency injection methods, i.e. pulsating voltage into estimated rotor synchronous rotating reference frame and rotating voltage into stator stationary reference frame, the new proposed strategy injects a pulsating high frequency carrier voltage into stator stationary reference frame. Then, the rotor position information can be retrieved from the rotor position dependent response current. The algorithm of the proposed strategy, compensation of cross-saturation effect and magnetic polarity detection are discussed and analyzed in this paper. The new proposed strategy has the advantage of fixed and simpler voltage signal injection, also the simpler and quicker demodulation from the response current comparing with the conventional high frequency injection methods. Furthermore, the experimental results based on an interior permanent magnet synchronous machine (IPMSM) demonstrate that the new proposed strategy has robust magnetic polarity detection, and can achieve accurate rotor position estimation with outstanding steady and dynamic performances.
一种将高频脉动信号注入静止参照系的无传感器控制策略
本文提出了一种新的无传感器控制策略,即在静止参考系中注入高频脉冲信号。不同于目前常用的两种高频注入方法,即在转子同步旋转参照系中注入脉动电压和在定子静止参照系中注入旋转电压,该方法在定子静止参照系中注入脉动高频载波电压。然后,从转子位置相关的响应电流中提取转子位置信息。本文对该策略的算法、交叉饱和效应补偿和磁极检测进行了讨论和分析。与传统的高频注入方法相比,该方法具有固定且简单的电压信号注入和响应电流解调更简单、更快的优点。此外,基于内部永磁同步电机(IPMSM)的实验结果表明,该方法具有鲁棒的磁极性检测能力,可以实现准确的转子位置估计,并具有良好的稳态和动态性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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