基于线性磁链的IPMSM位置检测技术

针对内嵌式永磁同步电机(IPMSM)很难在静止坐标系下利用磁链预估转子位置的问题,在基于线性磁链的IPMSM数学模型的基础上,用电流观测误差构建滑模平面,提出了一种用滑模观测器来预估转子位置和速度的方法。该方法解决了外加低通滤波器引起的预估磁链的相位滞后,提高了位置和速度估算的鲁棒性。建立场路耦合模式下的IPMSM全数字无位置传感矢量控制仿真系统,精确地反映永磁同步电机与控制系统的相互耦合特性,并搭建和仿真系统一致的实验平台。实验结果与仿真结果表明该设计方法的正确性和可实现性。

Rotor Position Estimation for IPMSM Based on Linear Flux

For the interior permanent magnet synchronous motor(IPMSM) is difficult to estimate rotor position from flux,a novel sliding mode observer(SMO) via the current error is presented to estimate rotor position and speed based on the linear flux.In this way,the phase lag caused by the extra low pass filter is eliminated and the robustness of estimated position and speed is improved.The full digital IPMSM sensorless vector control simulating system is built under the field-circuit coupled circumstance.Simulations...