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首页> 外文会议>2016 International Conference on Electrical Power and Energy Systems >Reduction of torque ripples in 3-level inverter fed PMSM drive based on instantaneous voltage control technique
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Reduction of torque ripples in 3-level inverter fed PMSM drive based on instantaneous voltage control technique

机译：基于瞬时电压控制技术降低三电平逆变器永磁同步电机驱动器中的转矩脉动

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摘要

In this paper, an efficient speed control technique is proposed for Direct Torque Control(DTC) of Permanent Magnet Synchronous Machine(PMSM) drive in order to reduce the ripple content in torque and flux. Though conventional DTC gives fast dynamic response, it has noticeably high ripple content due to the variable operating frequency of the inverter especially at lower rpm. To enervate this issue, SVPWM method is employed in this paper thereby making the inverter operating frequency independent of rotational speed. In order to further reduce the ripple content, a 3-level cascaded inverter is used. SVM is implemented using instantaneous voltage control technique for mathematical simplicity. The proposed method is implemented in Matlab/Simulink and the results obtained are compared to those of conventional DTC. It is observed from the results that there is a significant reduction in ripple content in the proposed technique when compared to the conventional method.
机译：本文提出了一种有效的速度控制技术，用于永磁同步电机（PMSM）驱动器的直接转矩控制（DTC），以减少转矩和磁通中的纹波含量。尽管传统的DTC可以提供快速的动态响应，但是由于逆变器的工作频率可变，尤其是在较低的rpm时，它具有明显的高纹波含量。为了解决这个问题，本文采用了SVPWM方法，从而使变频器的工作频率与转速无关。为了进一步降低纹波含量，使用了三级级联逆变器。为了简化数学运算，使用瞬时电压控制技术来实现SVM。所提出的方法在Matlab / Simulink中实现，并将获得的结果与常规DTC的结果进行比较。从结果可以看出，与常规方法相比，所提出的技术中的波纹含量显着降低。

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