基于霍尔位置传感器的低噪声推进电机驱动系统

Low-Noise Propulsion Motor Drive System Based on Hall-Effect Position Sensors

摘要:

潜航器电推进系统广泛采用高效率和高功率密度的永磁同步电机,需要结合转子位置传感器实现其高性能控制,采用霍尔磁极位置传感器可以节省体积,但低分辨率的位置信号不能满足电机的高性能控制需要。本文基于霍尔位置信号和平均速度采用线性插值方法估算转子实时位置,用于永磁同步电机矢量控制,针对霍尔信号偏差导致估算位置在修正处发生突变的问题,通过改进平均速度计算和位置修正方法平滑位置估算值,抑制了因估算位置突变导致的电流畸变,实现了潜航器推进用永磁同步电机的低噪运行,实验结果验证了方案的可行性和有效性。

Abstract:

The high-efficiency and high-power density permanent magnet synchronous motor is widely used in the electric propulsion system of underwater vehicles, and the rotor position sensor is required to achieve high performance control. The Hall-effect position sensor can save the volume, but the low-resolution position signal cannot meet the high-performance control needs of the motor. In this paper, the real-time rotor position is estimated by linear interpolation method based on calculated speed, and used in the vector control system. Due to the Hall signal error the estimated position jump can cause the motor current distortion, the paper proposes a revised method, which is validated by the experimental results.