基于位置鲁棒观测器的IPMSM方波式电压注入启动运行控制

Square-Wave Voltage Injection Startup Operation Control of IPMSM with Robust Position Observer

为了改善内置式永磁同步电机(IPMSM)无位置传感器控制的低速运行性能,提出了一种基于位置鲁棒观测器的方波式电压注入启动运行控制策略。方波式电压注入法避免了滤波器的使用,提高了系统带宽。在方波注入法的基础上,采用转子位置鲁棒观测器提高系统的抗负载扰动能力。根据实际阶跃式和斜坡式负载扰动以及位置观测误差期望指标,使用极点配置的方法设计了观测器的反馈矩阵参数。通过仿真和试验验证了所提无传感器控制策略的可行性与准确性。

To improve the low-speed performance of sensorless control for interior permanent magnet synchronous motor(IPMSM),a square-wave voltage injection startup control strategy was proposed,utilizing a robust position observer.The square-wave voltage injection method avoided the use of filters,thereby increasing the system bandwidth.Based on the square-wave injection method,a robust rotor position observer was employed to enhance the system’s resistance to load disturbances.The feedback matrix parameters of the observer were designed using pole placement,taking into account practical step and ramp load disturbances as well as desired position observation error indices.Simulations and experiments verified the feasibility and accuracy of the proposed sensorless control strategy.