【摘要】 分析了五相逆变系统的SVPWM调制机理,提出了一种能同时抑制输出电压电流中3次谐波的NFV-SVPWM具体实现方法。文中对空间电压矢量作用时间、扇区判断、功率开关切换顺序等核心部分进行了推导演算,并分别在Matlab/Simulink和TMS320F28335中建立了NTV和NFV两种SVPWM调制方式的仿真模型和生成代码,对提出的SVPWM生成方法进行了验证。最后对NTV和NFV两种SVPWM调制方式的输出相电流和相邻线电压进行了FFT分析,得出了各自的主要谐波成分和含量。更多还原

【Abstract】 This paper analyzes the mechanism of five-phase SVPWM modulation,and a NFVSVPWM implementation method which can suppress the harmonic of both voltage and phase current at the same time is proposed.Some core parts like the action time of space voltage vector,sector judgment and the switch sequence of power modules are deduced,based on which the models and the code of NTV-SVPWM and NFV-SVPWM are built both in Matlab/Simulink and in DSP.Finally,the FFT analysis is given to clarify the harmonic components of the adjacent line voltage and phase current.更多还原