高速高精度永磁同步电机补偿策略研究

永磁同步电机的定子电阻和磁链会随温度变化而变化,定子电感会随电机饱和程度的变化而变化,电机相电流的采集和转子角位置的采集由于硬件原因均存在延迟,考虑上述工况,本文提出了一种高速高精度矢量控制补偿算法.其中重点推导了基于电机模型的相电流采集延迟补偿策略,给出了补偿电压的计算方法;还推导了转子角位置采集延迟的补偿策略,根据...

Compensation Strategy of High Speed and High Precision Permanent Magnet Synchronous Motor

The stator resistance and flux linkage of a permanent magnet synchronous motor change with temperature, and the stator inductance change with the saturation of the motor. The acquisition of motor phase current and the acquisition of rotor angular position has time delay due to hardware reasons. Consider ing the above conditions, this paper proposes a high-speed and high-precision vector control compensation algorithm. Among them, the phase current acquisition delay compensation strategy based on the motor model is mainly derived, and the calculation method of the compensation voltage is given; the compensation strategy of the rotor angular position acquisition delay is also derived, and the digital filter that calculates the speed from the rotor angular position is designed according to the demand. Lay the foundation for the precise control and anti-disturbance ability of current loop predictive control. Simulations and experiments respectively verify the correctness and effectiveness of the motor vector control compensation strategy proposed.