【作者】 曾毅； 李永东；

【Author】 Zeng Yi Li Yongdong

【机构】 清华大学；

【摘要】 为了减少异步电机低速时转矩脉动并达到较高的性能,一种考虑了定子电阻变化对输出电压影响的改进间接转矩控制方法在双DSP平台上实现了。提出了一种基于模型参考自适应方法辨识定子电阻以补偿定子电阻变化在低速时的影响,该算法在较低的采样频率和开关频率(小于1000Hz)的情况下取得了满意的性能。仿真和实验结果证明了该方法的有效性。更多还原

【Abstract】 To reduce torque ripple and achieve higher performance in very low speed range, indirect torque control method is realized in a dual-DSP control platform and improved by considering the influence of the stator resistance variation on the voltage vector output. To compensate the influence, a new MRAS based method is proposed to identify the stator resistance. High performance is achieved at low sampling frequency and switching frequency less than 1000 Hz. Simulation results and experimental results are given to validate this scheme.更多还原