基于FFT频谱仿真的研究与设计

Research and design of the simulation based on FFT spectrum

电力电子技术的关键知识点很多,电力电子技术的研究对象是功率处理和变换,电力电子技术离不开表征电能的电压、电流、频率、波形和相位等若干基本参数的控制与转换,快速傅里叶变换(简称FFT)是电工电子中计算离散傅里叶变换的一种重要的计算公式,提出了一种计算算法,频域分析的编程中以FFT算法为基础,在对时域波形进行采样后,经过FFT处理离散数据,最终得到相关量的振幅谱,并且对算法编程实现,仿真试验达到预期目的。

There many key points in the knowledge of the power electronics technology, and the research objects of the power electronics technology are the power processing and transformation, thus the power electronics technology is inseparable from the characterization of electric voltage, current, frequency, waveform and phase of some basic parameters control and conversion, and the fast Fourier transform （FFT） algorithm is designed to process the sampling in time domain and get the simulation waves in frequency domain. The paper proposes the kind of FFT which processes the sampling date in time, the related volume amplitude spectrum is got, and the simulation experiments have achieved the desired objectives.