In high-performance field-oriented control of permanent magnet synchronous machines (PMSMs), an accurate rotor position is indispensable for the key roles in coordinate transformations. However, due to the rotor position offset error and the time delay in digital control systems, it is still challenging to obtain exact rotor position information. In this study, the influence of rotor position error on the control performance of a PMSM drive system is analysed first. Then, two novel compensation technologies, regulation and methods, are proposed to accurately compensate for the rotor position for both current and voltage coordinate transformations. The advantage of the proposed scheme is that even without any prior knowledge of the system delay, the rotor position offset and compensation time coefficients can also be precisely calculated. Parameter sensitivity analysis is carried out, and compensation criteria are also provided to improve the compensation accuracy. Experimental results on a 300 kW PMSM drive system demonstrate that compared to the results achieved with conventional methods, the compensation accuracies of the phase angles used for the current and voltage coordinate transformations are increased by and at 5000 r/min, respectively. Consequently, the control performance and stability margin of the system are efficiently improved.

中文翻译：

---

磁场定向永磁同步电机驱动器转子位置偏移误差和时间延迟的分析与补偿

在永磁同步电机（PMSM）的高性能磁场定向控制中，精确的转子位置对于坐标转换中的关键作用是必不可少的。但是，由于转子位置偏移误差和数字控制系统中的时间延迟，要获得精确的转子位置信息仍然很困难。在这项研究中，首先分析转子位置误差对PMSM驱动系统控制性能的影响。然后，两种新颖的补偿技术 调节和 提出了一些方法来精确补偿转子位置的电流和电压坐标转换。所提出的方案的优点在于，即使没有系统延迟的任何先验知识，也可以精确地计算转子位置偏移和补偿时间系数。进行参数灵敏度分析，并提供补偿标准以提高补偿精度。在300 kW PMSM驱动系统上的实验结果表明，与传统方法相比，与之相比，用于电流和电压坐标变换的相角补偿精度提高了 和 分别以5000 r / min的速度运转。因此，有效地改善了系统的控制性能和稳定性裕度。