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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >Sensorless Control of CSC-Fed IPM Machine for Zero- and Low-Speed Operations Using Pulsating HFI Method
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Sensorless Control of CSC-Fed IPM Machine for Zero- and Low-Speed Operations Using Pulsating HFI Method

机译：使用脉动HFI方法对CSC馈送的IPM机器进行零速和低速操作的无传感器控制

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摘要

In this paper, a sensorless method for low- and zero-speed operations is proposed for a high-power medium-voltage pulsewidth-modulated current-source-converter-fed interior-permanent-magnet motor drive system. The proposed method is based on the injection of a high frequency (HF) pulsating sinusoidal signal in the estimated synchronous reference frame of the drive's field-oriented control (FOC) scheme. The conventional FOC control scheme, low switching frequency, dc-link inductor, and the inverter output three-phase filter capacitor of the medium-voltage high-power current-source drive present some challenges in the generation and design of the HF-injection signal. To overcome these challenges, the FOC scheme is modified by introducing a modulation index control with suitable dc-link current compensation to enhance the dynamic response of the injected signal and prevent any clamp in the injected signal. In addition, a multisampling-space-vector-modulation method is proposed to prevent the distortion in the HF signal due to a low switching frequency to injected signal ratio. A detailed study and analysis regarding the influence of low switching frequency, output filter capacitor, and magnetic saturation in the injection method is carried out to determine the visible HF range of the injected signal. It is found that, by using the proposed FOC scheme and multisampling modulation scheme and by the proper design of the HF signal, an accurate rotor flux angle can be estimated for sensorless zero-/low-speed operations. Experimental results are provided to verify the proposed control method.
机译：在本文中，提出了一种用于大功率中压脉宽调制电流源变换器馈电式永磁电动机驱动系统的低速和零速运行的无传感器方法。所提出的方法基于在驱动器的磁场定向控制（FOC）方案的估计同步参考帧中注入高频（HF）脉动正弦信号。传统的FOC控制方案，低开关频率，直流母线电感器以及中压大功率电流源驱动器的逆变器输出三相滤波电容器在HF注入信号的生成和设计方面提出了一些挑战。为了克服这些挑战，通过引入具有适当直流链路电流补偿的调制指数控制来修改FOC方案，以增强注入信号的动态响应并防止注入信号中的任何钳位。此外，提出了一种多采样空间矢量调制方法，以防止由于开关频率与注入信号之比低而导致HF信号失真。对注入方法中的低开关频率，输出滤波电容器和磁饱和的影响进行了详细的研究和分析，以确定注入信号的可见HF范围。发现，通过使用提出的FOC方案和多采样调制方案以及HF信号的正确设计，可以为无传感器的零速/低速运行估计准确的转子磁通角。提供实验结果以验证所提出的控制方法。

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