This paper analyzes and compares the typical rotating high-frequency voltage injection (RTHF) method and the typical pulsating high-frequency voltage injection (PSHF) method in terms of torque ripple and vibration. Analysis and experiment results indicate that the PSHF performs better when it comes to torque pulsation and vibration. In addition, it is more suitable for rim motors which have strict restrictions on vibration. However, the estimated rotor position in PSHF has multiple convergence points. In addition, the filters used in PSHF can degrade the dynamic response of the PMSM sensorless field oriented control (SLFOC) system. An improved PSHF method compensated by Hall signals is proposed to accelerate the estimation process and improve the system stability in the presence of sudden load disturbances. The improved method is verified on an 11 kW rim motor experimental platform.

本文从转矩脉动和振动方面分析和比较了典型的旋转高频电压注入（RTHF）方法和典型的脉冲高频电压注入（PSHF）方法。分析和实验结果表明，PSHF在扭矩脉动和振动方面表现更好。此外，它更适用于对振动有严格限制的轮辋电机。但是，估计的PSHF转子位置具有多个收敛点。此外，在PSHF中使用的滤波器会降低PMSM无传感器定向磁场控制（SLFOC）系统的动态响应。提出了一种由霍尔信号补偿的改进的PSHF方法，以在负载突然受到干扰的情况下加快估计过程并提高系统稳定性。