摘要
针对传统SVPWM算法计算复杂的缺点,提出一种基于60°坐标下三电平逆变器SVPWM调制算法的控制策略。该控制策略可大幅简化传统SVPWM算法参考矢量扇区判定及开关矢量作用时间的运算,通过在g-h非正交坐标系内对大小扇区规则判断、基本矢量作用时间计算和作用顺序方法进行了研究,减小了控制器的计算工作量。采用Matlab/Simulink仿真软件对该控制策略进行了仿真,仿真结果验证了该控制策略的正确性及有效性。
Aiming at the shortcoming that the traditional space vector pulse width modulation（SVPWM）algorithm has com-plex computation,a control strategy of three-level inverter SVPWM algorithm based on 60o coordinate is proposed in this paper. The control strategy can greatly simplify the reference vector sector determination and the switching vector action time calcula-tion of traditional SVPWM algorithm. The calculation workload of the controller was reduced by the research on the sectors size rule judgment,action time calculation and action sequence of basic vector in the g-h non-orthogonal coordinate system. The re-sults of Matlab/Simulink simulation verify the correctness and validity of the control strategy.
出处
《现代电子技术》
2014年第16期156-159,共4页
Modern Electronics Technique
关键词
空间矢量脉宽调制
SVPWM算法
三电平逆变器
非正交坐标系
space vector pulse width modulation
SVPWM algorithm
three-level inverter
non-orthogonal coordinate sys-tem
