基于DSP的SVPWM与载波PWM的统一性研究  

DSP Based Equivalence of SVPWM and Carrier-Based PWM Study

作　　者：杨金辉[1] 戴瑜兴[1] 易龙强 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]威胜集团控股有限公司,湖南长沙410013

出　　处：《电子学报》2010年第7期1646-1653,共8页Acta Electronica Sinica

基　　金：住房和城乡建设部科学技术研究开发项目(No.2008-k6-22)

摘　　要：针对脉宽调制(PWM)逆变器,在研究逆变电源电压矢量的基础上,将空间矢量脉宽调制(SVPWM)技术应用于三相和单相PWM逆变电源,分别给出了三相和单相SVPWM的数字信号处理(DSP)算法,给出了一种开关模式优化的单相SVPWM算法,导出了三相和单相SVPWM基于载波调制的调制波形式以及零序信号形式,指出载波零序信号在本质上对应着逆变器零电压矢量作用时间分配与分布,论证了SVPWM与载波PWM的统一,实验结果验证了SVPWM算法的有效性.For the control of Pulse Width Modulation（PWM） inverter,the Space-Vector PWM（SVPWM） technique was been applied to three-phase inverter and single-phase inverter based on the inverter voltage space vector analysis.Then,the realization method based on Digital Signal Processing（DSP） for three-phase and single-phase SVPWM technique was described in detail.An optimal switching SVPWM technique was given.The three-phase SVPWM carrier-based modulation form and its zero-sequence signal has been deduced.Through the point of carrier zero-sequence signal correspondding to space-vector zero voltage vector,the equivalent of space-vector based modulation and carrier based modulation was been proved.Finally,the experiment proved those ideal in this paper.

关 键 词：PWM逆变器 空间矢量脉宽调制 载波PWM DSP 零序信号 

分 类 号：TM464[电气工程—电器]