【摘要】 本文提出了一种改进的SPWM波形的等面积算法,即以采样周期的几何中心为SPWM波矩形脉冲中心的方法,且利用TMS320F240DSP的高速运算能力,提出了实时在线地消除逆变电路输出电压中谐波含量的一种新硬件实现方法,在实验室中进行了仿真实验,得出了理想的仿真输出电压波形。更多还原

【Abstract】 The thesis proved an improved equal area algorithm by analyzed the intrinsic methods based on the SPWM. In the im- proved equal area algorithm, the geometry center of sampling period is regarded as the rectangular pulse center of SPWM wave. Uti- lizing its highly speed operational capability in TMS320F240 DSP chip, we put forward the new hardware mode to eliminate the har- monic wave of inverter in real time. Testing the new hardware method DSP- based in laboratory, the emulation conclusion shows that the control using the new hardware mode can improve the accuracy of the invert output and ideal voltage wave can be output.更多还原