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首页> 外文会议>2013 8th International Conference-Workshop Compatibility and Power Electronics >Evaluation of current ripple amplitude in three-phase PWM voltage source inverters
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Evaluation of current ripple amplitude in three-phase PWM voltage source inverters

机译：三相PWM电压源逆变器的电流纹波幅度评估

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Determination of current ripple in three-phase PWM voltage source inverters (VSI) is important for both design and control purposes, since this is the most popular conversion topology for energy conversion systems. In this paper the complete analysis of the peak-to-peak current ripple distribution over a fundamental period is given for three-phase VSIs. In particular, peak-to-peak current ripple amplitude is analytically determined as a function of the modulation index. Minimum, maximum, and average values are also emphasized. Although the reference is made to continuous symmetric PWM, being the most simple and effective solution to minimize the current ripple, the analysis could be easily extended to either discontinuous or unsymmetrical modulation, both carrier-based and space vector PWM. The analytical developments for all the different subcases are verified by numerical simulations.
机译：三相PWM电压源逆变器（VSI）中电流纹波的确定对于设计和控制目的都很重要，因为这是能量转换系统中最流行的转换拓扑。本文给出了三相VSI在基本周期内峰-峰电流纹波分布的完整分析。特别地，根据调制指数解析地确定峰峰值电流纹波幅度。还强调了最小值，最大值和平均值。尽管参考了连续对称PWM，这是最小化电流纹波的最简单有效的解决方案，但该分析可以轻松地扩展到基于载波和空间矢量PWM的不连续或不对称调制。通过数值模拟验证了所有不同子情况的分析发展。

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