【摘要】 在分析现有SPWM面积等效方法的基础上 ,提出了一种SPWM面积中心等效法。文中给出了按照面积中心等效法合成SPWM波形的机理以及面积中心等效算法 ,并对双极性面积中心等效法生成的SPWM波形进行了谐波分析。仿真结果表明 ,按面积中心等效法合成的SPWM波形与传统的面积等效法合成的SPWM波形相比 ,其基波分量增大 ,低次谐波分量明显改善。更多还原

【Abstract】 Based on existing SPWM area equivalent,a SPWM area center equivalent is presented.The paper puts forward the mechanism of combined waveform and computation of a SPWM area center equivalent.Harmonic of double pole SPWM waveform is analyzed in this paper.Simulation results reveal that fundamental component of the method is larger than that of the original method,and low order harmonic components is better更多还原