中国工程机械学报

为了提升永磁同步电机电流传感器的控制性能，提出了一种基于滑模观测器的电流重构方法。采用准比例谐振(PR)调节器对滑模观测器中的电流传感器进行调节，通过引入准PR调节器以提升谐振频率点的增益。构建实时模型，实现电流传感器的精准控制。研究结果表明：在满载状态下，准PR电流的一次谐波(150 Hz)幅值显著减小，i_d和i_q的总谐波分别降低了11.6%和9.4%，实现了充分的三次谐波抑制效果，获得了更优的稳态控制性能，有效降低了重构电流空间矢量的谐波含量。在不同工况下，准PR方法的i_d、i_q谐波比例相较于PI传统方法均显著降低，在所有速度区间内均实现了更低的平均误差，展现出更为优越的转矩控制调节精度。

In order to improve the control performance of permanent magnet synchronous motor current sensor, a current reconstruction method based on sliding mode observer is proposed. A quasi-proportional resonator(PR) is used to adjust the current sensor of the sliding mode observer, and a quasi-PR regulator is added to improve the gain of the resonant frequency points. The real-time model is established to control the current sensor. The research results show that: at full load, the first harmonic of quasi-PR current(150 Hz) forms a smaller value, and the total harmonics of i_d and i_q are reduced by 11. 6% and 9. 4% respectively, which can achieve the full third harmonic effect, obtain a better steady-state control effect, and effectively reduce the space vector harmonics of the reconstructed current. Under different working conditions, the i_d and i_q harmonic ratios of the quasi-PR method are significantly reduced compared with the PI traditional method, and lower average errors are achieved in all speed ranges, showing better torque control adjustment accuracy.