混沌扩频SPWM最优参数选取方法及其在FPGA上的实时实现

An Optimization Method for Parameter Selection of EMI-suppression Chaotic Spread Spectrum PWM and Its Realization on FPGA

以基于Logistic映射的混沌扩频SPWM技术应用方法为例,对混沌扩频技术的参数选取进行了研究,定量的分析了基准频率和偏置频率对谐波分布的影响效果,在此基础上,给出混沌扩频中基准频率和偏置频率的最优选取方法,并在FPGA上实现该方案,验证了实现效果。

A study on parameter selection of chaotic spread spectrum PWM technique based on the Logistic map was conducted. The influence on harmonic distribution of base frequency and deviation frequency was given by quantitative analysis. Based on which, an optimization parameter selection method of base frequency and deviation frequency for EMI- suppression chaotic spread spectrum PWM was proposed. Finally, the proposed method was realized and verified on FPGA.