Estimation method of rotor position of PMSM with filterless high-frequency square-wave injection.
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| Title: | Estimation method of rotor position of PMSM with filterless high-frequency square-wave injection. |
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| Alternate Title: | 无滤波器高频方波注入永磁同步电机转子位置的估计方法. |
| Authors: | Xiangju, JIANG1 jxju16@mail.lzjtu.cn, Jilin, ZHAI1 |
| Source: | Journal of Measurement Science & Instrumentation. Jun2025, Vol. 16 Issue 2, p280-290. 11p. |
| Subjects: | Permanent magnet motors, Square waves, Signal processing, Demodulation, Rotors |
| Abstract (English): | For the traditional methods of rotor position estimation for permanent magnet synchronous motor (PMSM), the phase shift caused by the introduction of filter will affect the accuracy of rotor position estimation to some extent. This paper presents an improved rotor position estimation method for high frequency square wave signal injection without filter. Firstly, the traditional method injects high-frequency pulse vibration signals into the estimated shafting, and the proposed method injects high-frequency square wave signals into the estimated shafting to avoid the introduction of filters in the process of extracting rotor position information. Then, the rotor position signal is decoupled in the stationary shafting, and the rotor position error after demodulation is processed by PLL. The system realized the signal processing of rotor position without filter, which improved the convergence speed and estimation precision of rotor position and the dynamic response performance of the system. The simulation results showed that the proposed method had fast convergence speed and small phase delay, and better improved the precision of rotor position detection. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): | 传统的脉振高频信号注入永磁同步电机 (PMSM) 转子位置估计方法中, 引入滤波器产生的相移会对转子位置估计精度产 生一定的影响。本文提出了一种改进的无滤波器高频方波信号注入的转子位置估计方法。首先, 传统方法在估计的轴系注入脉振 高频信号, 本文所提方法在估计的轴系中注入高频方波信号, 在转子位置信息提取环节中避免了滤波器的引入。然后, 在静止的 轴系对转子位置信号进行解耦, 对解调后的转子位置误差采用 PLL 锁相环处理。系统实现了无滤波器转子位置信号处理, 提升了 转子位置的收敛速度和估计精度以及系统的动态响应性能。仿真实验结果表明, 所提的方法收敛速度快, 相位延迟小, 较好的提 升了转子位置检测精度。 [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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