Sensorless speed control of nonsalient permanent magnet synchronous motor using rotor position tracking PI controller
Sensorless speed control of nonsalient permanent magnet synchronous motor using rotor position tracking PI controller
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DOI：
10.1109/pesc.2004.1355187
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发表时间：
2004-06
期刊：
影响因子：
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通讯作者：
Jong-Kun Lee;J. Seok;Dong-Choon Lee
中科院分区：
文献类型：
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作者：
Jong-Kun Lee;J. Seok;Dong-Choon Lee
提出了一种隐凸永磁同步电动机（PMSM）驱动系统的新的速度估计策略，该策略不需要高频信号注入或特殊的PWM模式。该方法基于具有转子位置误差信息的驱动系统的d轴电流调节器输出电压。转子速度可以通过转子位置跟踪PI控制器来估计，该控制器将位置误差控制为零。对于零速和低速运行，转子位置跟踪控制器的PI增益根据估计的转子速度具有变结构。然后，在零速度下，转子位置和速度具有缓慢的动态特性，因为在该区域中变化的增益非常低。为了提高PI控制器在零速时的带宽，将回路恢复技术应用于控制系统。实验结果表明，所提出的无传感器算法在负载条件下的令人满意的操作。
This paper presents a new velocity estimation strategy of a nonsalient permanent magnet synchronous motor (PMSM) drive without high frequency signal injection or special PWM pattern. This approach is based on the d-axis current regulator output voltage of the drive system that has the information of rotor position error. The rotor velocity can be estimated through a rotor position tracking PI controller that controls the position error to zero. For zero and low speed operation, PI gain of rotor position tracking controller has a variable structure according to the estimated rotor velocity. Then, in zero speed, the rotor position and velocity has a sluggish dynamics because the varying gains are very low in this region. In order to boost the bandwidth of PI controller in zero speed, a loop recovery technique is applied to the control system. The experimental results show the satisfactory operation of the proposed sensorless algorithm under load conditions.