【作者】 侯轩； 李永东； 曾毅；

【Author】 Hou Xian Li Yongdong Zeng Yi

【机构】 清华大学；

【摘要】 针对电压空间矢量PWM驱动异步电机系统当中产生的转矩脉动问题,文章进行了理论和实验两方面的研究。在提出了对空间矢量PWM进行优化的新思路的基础上,针对由电压低次谐波引起的6次转矩脉动,根据理论推导和计算,提出了一种消除6次谐波转矩脉动的空间矢量PWM方法,给出了相应的仿真结果,针对中频运行段轻载情况下易出现的电机低频振荡,讨论了可能的原因;通过对空间矢量合成方式的改进,得到了一种减小此种振荡的方案,实验结果证明这种方法效果明显,达到了实际运行的要求。更多还原

【Abstract】 Due to the torque ripple of induction motor driven by voltage space vector PWM inverter, this paper make study both on theory and experience. A new idea of optimization of space vector PWM is proposed, and based on it a novel method of space vector PWM for sixth harmonic torque ripple elimination is developed by theory and calculation, and the results of simulation is presented. The low frequency surge of motor in middle operation frequency is discussed for some perhaps reason, and through a proper change of space vector PWM this surge could be decrease, which is proved by experience results.更多还原