摘要
在阐述传统SVPWM调制方式的基础上,推导出了SVPWM的一种新型调制方法。该方法直接利用三相相电压的大小进行简单的大小判断即可得到空间矢量所在扇区,同时利用三相相电压的简单加减运算就可以得到非零矢量的导通时间,避免了传统SVPWM算法中三相到两相的Clark坐标变换、三角函数计算等过程,简化了SVPWM算法步骤,实现方式简单快速,实时性强。最后利用该算法对一台三相异步电动机进行了仿真,仿真结果验证了该算法的正确性。
A novel modulation algorithm of space vector pulse-width modulation （SVPWM） was proposed based on the conventional SVPWM. In the algorithm, the sector of space vector was determined by simple comparison of the value of three-phase voltage and the duty cycle of non-zero vector was calculated simply by addition and subtraction to the phase voltage. The complexity was reduced by avoiding the Clark coordinate transformations and trigonometric function calculation in the conventional SVPWM. The simulation of a three-phase asynchronous motor was built by using the novel SVPWM. The results verify the validity of the algorithm.
出处
《微特电机》
北大核心
2012年第7期72-75,共4页
Small & Special Electrical Machines
