Pulsating Signal Injection-Based Axis Switching Sensorless Control of Surface-Mounted Permanent-Magnet Motors for Minimal Zero-Current Clamping Effects
Pulsating Signal Injection-Based Axis Switching Sensorless Control of Surface-Mounted Permanent-Magnet Motors for Minimal Zero-Current Clamping Effects
复制标题
基于脉动信号注入的表面安装永磁电机轴切换无传感器控制，可实现最小的零电流钳位效应
DOI：
10.1109/tia.2008.2006350
复制
发表时间：
2008
影响因子：
4.4
通讯作者：
J. Seok
中科院分区：
文献类型：
--
作者：
C. Choi;J. Seok
在本文中，我们提出了一种基于注入的轴切换（IAS）无传感器控制方案，使用脉动高频（HF）信号来最小化表面安装永磁电机的零电流钳位（ZCC）效应引起的位置检测误差和速度估计纹波。当脉动载波信号电压被注入估计的同步系中时，在静止参考系中测量的所得高频电流的包络遵循调幅模式。利用这一信息，IAS 技术可以根据负载条件调整电流相位角，从而避免高频电流的多个过零。在空载条件下，脉动电压仅注入到d轴上，而d轴电流被控制到某个非零值。在负载条件下，注入电压切换至q轴，而d轴电流则回落至零。因此，与标准脉动注入方案相比，所提出的无传感器控制在 ZCC 区域中无需预定义离线调试测试即可实现更好的估计性能。实验证明了该方法在抑制ZCC扰动引起的估计误差和扩展系统带宽方面的有效性。
In this paper, we propose an injection-based axis switching (IAS) sensorless control scheme using a pulsating high-frequency (HF) signal to minimize position detection error and velocity estimation ripple resulting from the zero-current-clamping (ZCC) effect for surface-mounted permanent-magnet motors. When a pulsating carrier-signal voltage is injected in an estimated synchronous frame, the envelope of the resulting HF current measured in the stationary reference frame follows an amplitude-modulated pattern. Using this information, the IAS technique allows one to avoid multiple zero crossings of HF currents by adjusting the current phase angle according to the load condition. At no-load condition, the pulsating voltage is injected only on the d-axis, while the d-axis current is controlled to a certain nonzero value. Under a load condition, the injection voltage is switched to the q-axis, while the d -axis current drops back to zero. Thus, the proposed sensorless control enforces a much better estimation performance in a region of ZCC without a predefined offline commissioning test than the standard pulsating injection scheme. Experiments illustrate the effectiveness of the proposed method in suppressing the estimation error caused by the ZCC disturbance and in extending the system bandwidth.