基于电压空间矢量统一方程的调制策略研究  

Research on Modulation Strategy Based on Voltage Space Vector Unified Equation

作　　者：王子鸣 郭潇 李振宇[1] 陈国柱[1] WANG Zi-ming;GUO Xiao;LI Zhen-yu;CHEN Guo-zhu(Zhejiang University,Hangzhou 310013,China)

机构地区：[1]浙江大学,电气工程学院,浙江杭州310013

出　　处：《电力电子技术》2022年第11期133-137,共5页Power Electronics

摘　　要：在三相三线制(3P3W)和三相四线制(3P4W)系统中,建立了电压空间矢量调制求解的统一方程,以下简称电压空间矢量统一方程。将电压空间矢量统一方程应用于3P3W和3P4W系统,从代数的角度证明了在3P3W系统中空间矢量脉宽调制(SVPWM)为正弦脉宽调制(SPWM)的简化算法并基于此说明SVPWM拥有最大电压利用率的原因以及在3P4W系统中SVPWM和SPWM的归一化。简化了SVPWM算法,利用电压空间矢量统一方程计算出了三相系统中SVPWM的调制波,计算过程仅需简单的四则运算。给出了基于电压空间矢量统一方程求解的SPWM和电压SVPWM的逆变器实验结果,证明了电压空间矢量统一方程的正确性和有效性。In three-phase three wire(3P3W) system and three-phase four wire(3P4W) system,the unified equation of voltage space vector modulation is established,which is hereinafter referred to as the unified equation of voltage space vector.The unified equation of voltage space vector is applied to 3P3W system and 3P4W system.The simplified algorithm of space vector pulse width modulation(SVPWM) as sinusoidal pulse width modulation(SPWM) in 3P3W system is proved from the perspective of algebra.Based on this,the reason why SVPWM has the maximum voltage utilization and the normalization of SVPWM and SPWM in 3P4W system are explained.The SVPWM algorithm is simplified,and the modulation wave of SVPWM under three-phase system is calculated by using the unified equation of voltage space vector.The calculation process only needs four simple operations.The experimental results of SPWM and voltage SVPWM inverter based on the unified equation of voltage space vector are given,which proves the correctness and effectiveness of the unified equation of voltage space vector.

关 键 词：三相系统 电压空间矢量统一方程 电压空间矢量脉宽调制 

分 类 号：TM133[电气工程—电工理论与新技术]