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首页> 外文会议>Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE >Zero and low speed sensorless control for CSC-fed IPM drive system
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Zero and low speed sensorless control for CSC-fed IPM drive system

机译：CSC馈送的IPM驱动系统的零速和低速无传感器控制

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摘要

In this paper, a sensorless control method for low and zero speed operation is proposed for a high-power medium-voltage pulse-width-modulated Current-Source-Converter (CSC)-fed Interior Permanent Magnet Motor (IPM) drive system. The proposed method is based on 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 of the high-frequency 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 (MS-SVM) method is proposed to prevent the distortion in the high-frequency signal due to a low switching frequency to injected signal ratio. It is found that by using the proposed FOC scheme and multisampling modulation scheme, and proper design of the high-frequency signal, an accurate rotor flux angle can be estimated for sensorless zero/low speed operation. Experimental results are provided to verify the proposed control method.
机译：本文提出了一种用于大功率中压脉宽调制电流源变频器（CSC）的内部永磁电动机（IPM）驱动系统的低速和零速运行的无传感器控制方法。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，直流链路电感器和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产生高频注入信号方面面临一些挑战。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（MS-SVM）方法，以防止由于开关频率与注入信号之比低而导致的高频信号失真。结果发现，通过使用提出的FOC方案和多采样调制方案，以及对高频信号的适当设计，可以为无传感器零速/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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