变步长DFT算法在三相交错维也纳整流器优化中的应用

B. Bertoldi, E. F. C. Grabovski, A. B. Lange, M. Heldwein
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引用次数: 1

摘要

介绍了一种降低功率转换器电量复杂度的变步长离散傅立叶变换,以减少优化程序的时间消耗,这些程序依赖于电压和电流频谱,这些频谱通常由功率转换器的数值模拟产生的复杂时域波形。还描述了一种可变步长抽取算法,通过检测电平转换和/或导数不连续来减少点的数量。对采用断续脉宽调制的三相维也纳交错整流器的电压和电流波形进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Variable-step DFT Algorithm to Speed Up Optimization Routines Applied to a Three-Phase Interleaved Vienna Rectifier
A variable-step Discrete Fourier Transform with reduced complexity for the electrical quantities of power converters is introduced, as to reduce the time consumption of optimization routines which depend on voltage and current frequency spectrum derived from a complex time domain waveform typically generated by a numeric simulation of a power converter. A variable-step decimation algorithm is also described, reducing the number of points by detecting level transitions and/or derivative discontinuities. The algorithms are validated for a Three-Phase Vienna Interleaved Rectifier voltage and current waveforms employing Discontinuous Pulse Width Modulation.
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