多相逆变器空间矢量调制的一种算法

D. Casadei, M. Mengoni, G. Serra, A. Tani, L. Zarri
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引用次数: 11

摘要

自20世纪90年代末以来,多相驱动已成为一些特定应用中三相驱动的重要替代方案,例如电力船舶推进,机车牵引,电动车辆和大功率工业应用。目前的研究活动集中在开发能够利用多相电机中存在的自由度的控制策略上。众所周知,多相电机不能用单一d-q平面的空间矢量表示来分析,但有必要引入多个d-q平面。本文引入倒易矢量的概念,采用迭代的方法求解奇数相多相逆变器的空间矢量调制问题,即通过查找表的形式获取逆变器的配置信息。该方法经实验验证,可以充分利用直流输入电压,同时调制不同d-q平面上的电压空间矢量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Algorithmic Approach To Space Vector Modulation For Multiphase Inverters
Since late 1990s multiphase drives have become a serious alternative to three-phase drives in some particular applications such as electric ship propulsion, locomotive traction, electric vehicles and high power industrial applications. Nowadays the research activity is focused on the development of control strategies that can exploit the degrees of freedom that exist in multiphase machines. As known, a multiphase motor cannot be analyzed using the space vector representation in a single d-q plane, but it is necessary to introduce multiple d-q planes. In this paper the problem of the space vector modulation of multiphase inverters with an odd number of phases is solved introducing the concepts of reciprocal vector and adopting an algorithmic approach, i.e. the information on the inverter configurations, saved in a look-up table, is accessed on the basis of an iterative procedure. The proposed approach, confirmed by experimental tests, allows the full exploitation of the dc input voltage and the simultaneous modulation of voltage space vectors in different d-q planes.
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