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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Unified Graphical Model of High-Frequency Signal Injection Methods for PMSM Sensorless Control
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Unified Graphical Model of High-Frequency Signal Injection Methods for PMSM Sensorless Control

机译:PMSM无传感器控制的高频信号注入方法统一图形模型

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摘要

High-frequency (HF) signal injection methods have proved to be good candidates for permanent magnet synchronous motor sensorless control at zero or low speed. However, conventional methods have some shortcomings, and several improved methods have been put forward by scholars. In order to analyze the essential relationships among these methods, a unified graphical model is proposed in this paper based on the analysis of mechanism of conventional HF signal injection methods. According to the unified graphical model, the signal modulation modes can be categorized into phase-modulated-based HF injection (PMHI) and amplitude-modulated-based HF injection (AMHI), meanwhile the demodulation modes can be classified into open-loop calculation and close-loop convergence. Besides, novel methods are easily deduced from the unified graphical model. Furthermore, the effects of adverse factors, including resistance, digital control delay, inverter nonlinearity, and cross saturation on PMHI and AMHI are analyzed, respectively. Finally, experimental results prove the validity of the theoretical analysis.
机译:已经证明,高频(HF)信号注入方法是永磁同步电动机无传感器控制的良好候选,零或低速。然而,传统方法具有一些缺点,学者提出了几种改进的方法。为了分析这些方法之间的基本关系,本文提出了一种统一的图形模型,基于传统HF信号注入方法的机理分析。根据统一的图形模型,可以将信号调制模式分类为基于相位调制的HF注入(PMHI)和基于幅度调制的HF注入(AMHI),同时可以将解调模式分为开环计算和闭环收敛。此外,从统一的图形模型中容易推断出新的方法。此外,分别分析了不良因素的影响,包括抗性,数字控制延迟,逆变器非线性和PMHI和AMHI的交叉饱和度。最后,实验结果证明了理论分析的有效性。

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