基于SPWM空间矢量控制方法的改进  

Improvement of Space Vector Pulse Width Modulation Method Based on SPWM

作　　者：黄楠楠[1] 王海欣[1] 张庭茂 黄海宏[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《电器与能效管理技术》2017年第2期66-70,共5页Electrical & Energy Management Technology

摘　　要：为了在使用SVPWM调制方式时任意配置的对称或不对称方波方式均能灵活地选择电流控制策略,通过类比利用SPWM直接三相电流控制生成三相对称调制波的方式,提出了一种改变SVPWM给定的改进方法。对SPWM的调制波进行3/2变换生成参考电压矢量来替代传统SVPWM中的参考电压矢量,进而确定相应电压矢量作用时间。通过仿真和试验验证了所提方法的有效性,其能明显改善电流波形,降低电流畸变率,消除电网电压扰动。In order to select current control strategy flexibly when using symmetry and asymmetry SVPWM modulation,by comparing the SPWM direct three-phase current control strategy generating symmetry three-phase modulation wave,this paper proposed a new improved strategy by transforming modulation wave with 3/2 coordinate transformation to generate reference voltage to replace the traditional one,thus the effective time of corresponding voltage vector is determined.The substance of it is to change the given of SVPWM.The simulation and experiment results show that the proposed method can significantly improve the current waveform,reduce the current distortion rate and eliminate the grid voltage disturbance.

关 键 词：整流器 SPWM SVPWM 电压矢量 

分 类 号：TM46[电气工程—电器]