基于新型双滑模的永磁同步电机无传感器矢量控制

为了降低传统滑模观测器(sliding mode observer,SMO)存在严重的高频抖振、提高转子位置和电机转速估算精度以及降低速度环传统比例积分控制(proportional integral,PI)超调量过大等问题,提出一种基于高阶滑模观测器与新型滑模速度控制器相结合的永磁同步电机无传感器矢量控制方法,用高阶...

Permanent Magnet Synchronous Motor based on New Type Double Sliding sensorless vector mode

In order to reduce the serious high-frequency chattering of traditional sliding mode observer (SMO), improve the estimation accuracy of rotor position and motor speed, and reduce the overshoot of traditional proportional integral control (PI) in speed loop, a sensorless vector control method for permanent magnet synchronous motor (PMSM) based on the combination of high-order sliding mode observer and new sliding mode speed controller is proposed, The high-order sliding mode observer is used to replace the traditional sliding mode observer, and the new sliding mode speed controller is used to replace the traditional PI speed controller. Finally, through the model building and simulation analysis with Matlab / Simulink, compared with other commonly used control methods, the results show that the new double sliding mode control method has smaller overshoot and chattering, more accurate rotor position estimation and basically no chattering, which improves the overall observation accuracy and suppresses the high-frequency chattering of the system, The dynamic and steady-state response of PMSM is improved.